System Description

WARNING: This page is about a different variant/trim than selected.

PUSH-BUTTON START DESCRIPTION
1. The push-button start uses a push-type power switch, which the driver can operate by merely carrying the electrical key. This system consists primarily of the power management control ECU, power switch, transmission control ECU assembly, electrical key, ACC relay, P/POINT relay, IG1 NO. 1 relay, IG1 NO. 2 relay, IG1 NO. 3 relay, IG2 relay, ID code box (immobiliser code ECU)* and certification ECU (smart key ECU assembly). The power management control ECU controls the system. This function operates in cooperation with the push button start.
  HINT:
  
  In this chapter, the expression "power source" has been used in some locations to allow precise explanations. The power source mode is also expressed using conventional expressions such as "power switch off", "power switch on (ACC)" and "power switch on (IG)".
  - *: for Canada

FUNCTION OF MAIN COMPONENTS

Component	Function
Power Switch Transponder Key Amplifier	Transmits power switch signal to power management control ECU. Informs driver of power source mode or system abnormality with illumination stage of indicator light. Receives ID code and transmits it to certification ECU (smart key ECU assembly) when key battery is low.
Electrical Key	Receives signals from antennas and returns ID code to entry door control receiver.
Electrical Key Antenna Console and Rear Seat	Receives request signals from certification ECU (smart key ECU assembly) and forms detection area in vehicle.
Indoor Electrical Key Antenna (for Front, Center and Rear Floor)	Receives a request signal from the certification ECU (smart key ECU assembly) and forms the interior detection area.
Door Control Receiver Assembly	Receives the ID code from the key and transmits it to the certification ECU (smart key ECU assembly).
Wireless Door Lock Buzzer Assembly	Sounds to inform the driver of malfunctions in the smart key system.
Power Management Control ECU	Changes power source mode in 4 stages (off, on (ACC), on (IG), on (READY) in accordance with shift position and state of stop light switch. Controls push-button start function in accordance with signals received from switches and each ECU. Power management control ECU and certification ECU (smart key ECU assembly) permit starting of hybrid control system after receiving unlock signal from transmission control ECU.
Certification ECU (Smart Key ECU Assembly)	Certifies ID code received from entry door control receiver and transmits the certification results to the ID code box (immobiliser code ECU)* and transmission control ECU assembly.
Stop Light Switch	Outputs state of brake pedal to power management control ECU.
ID Code Box (Immobiliser Code ECU)*	Receives gearshift control unlock or engine immobiliser unset signals from the certification ECU (smart key ECU assembly), certifies them, and transmits each unset signal to transmission control ECU assembly or power management control ECU.
Transmission Control ECU Assembly	Transmission control ECU locks/unlocks gearshift control based on lock/unlock request signals from certification ECU (smart key ECU assembly). Detects gearshift control lock/unlock status and transmits to other ECUs. Transmission control ECU activates the shift control actuator based on signals from the power management control ECU when gearshift control is unlocked. Transmission control ECU controls the application timing of current to the parking lock motor based on signals from the rotation angle sensor.

*: for Canada

SYSTEM FUNCTION

The electric controls of the push-button start function are described below:

Control	Outline
Power switch control	When the person carrying the key enters the vehicle and the brake pedal is depressed, the power management control ECU sends the key certification request signal to the certification ECU (smart key ECU assembly). On receiving the key certification request signal, the certification ECU (smart key ECU assembly) generates a request signal and sends it to the indoor electrical key antenna. The indoor electrical key antenna transmits the request signal in order to detect that the key is in the cabin. When the key receives the request signal, it sends back the response code and ID code. When the door control receiver assembly receives the signal from the key, it sends the ID code to the certification ECU (smart key ECU assembly). The ID code box verifies check results received from the certification ECU via LIN and sends them to the power management control ECU*. The power management control ECU authorizes the operation of the power switch. If the ID codes match, the certification ECU (smart key ECU assembly) sends the certification OK signal to the power management control ECU. Upon receiving the certification OK signal, the power management control ECU illuminates the power switch indicator light, changes the power source mode and starts the hybrid control system depending on how the power switch is operated.
Warning	When any of the situations below occur, the smart key system causes the certification ECU (smart key ECU assembly) to sound the buzzer in the combination meter assembly and wireless door lock buzzer assembly, and indicate a warning on the multi-information display in order to alert the driver: The hybrid vehicle control system is left running and the shift lever is in R, N, D or B when the driver gets out of the vehicle. The key reminder sounds. The hybrid vehicle control system is left running and park (P) is selected when the driver gets out of the vehicle. The hybrid vehicle control system is left running when a passenger gets out of the vehicle while holding the key. The key is not in the detection areas. The key battery is weak. The power management control ECU is malfunctioning. The hybrid vehicle control system cannot be started (driver error). The hybrid vehicle control system cannot be started (system error). An attempt is made to turn off the vehicle with the shift lever in a R, D or B. Auto power off operation occurs. Immobiliser system certification completion occurs. The vehicle is driven without a key.
Key Cancel. Refer to CUSTOMIZE PARAMETERS	The following key functions can be cancelled by following certain procedures: Entry Unlock/Lock Entry Hybrid Vehicle Control System Start Entry System Back Door Open Function* Key Lock-in Prevention Warning
Diagnosis	When the power management control ECU detects a malfunction, the power management control ECU diagnoses and memorizes information related to the fault.

*: for Canada

WARNING FUNCTION

Warning

When any of the situations below occur, the smart key system causes the certification ECU (smart key ECU assembly) to sound a buzzer in the combination meter assembly and the wireless door lock buzzer assembly, a message to appear on the multi-information display, and the power switch illumination to operate in order to alert the driver.

Situation	Condition
A	The hybrid vehicle control system is left running and the shift lever is in R, N, D or B when the driver gets out of the vehicle.
B	The key reminder sounds.
C	The hybrid vehicle control system is left running and park (P) is selected when the driver gets out of the vehicle.
D	The hybrid vehicle control system is left running when a passenger gets out of the vehicle while holding the key.
E	The key is not in the detection areas.
F	The key battery is weak.
G	The power management ECU is malfunctioning.
H	The hybrid vehicle control system cannot be started (driver error).
I	The hybrid vehicle control system cannot be started (system error).
J	An attempt is made to turn off the vehicle with the shift lever in a R, D or B.
K	Auto power off operation occurs.
L	Immobiliser system certification completion occurs.
M	The vehicle is driven without a key.

Situation A

There are 2 patterns for situation A.

Pattern 1:

When the hybrid vehicle control system is left running and the shift lever is in R, N, D or B, the driver opens the door and attempts to get out of the vehicle.

In this situation, the following control is performed:

Possible Effects without Warning	Sudden vehicle start, vehicle theft, vehicle roll-away
Warning Active Condition	The warning is activated when all of the following conditions are met: The power switch is in a mode other than off. The shift lever is in R, N, D or B. The vehicle speed is less than 5 km/h (3.1 mph). The driver door is opened.
Warning Method	Combination Meter Assembly	Buzzer	Sounds continuously
		Multi-information Display	The following warning message is displayed: Shift to P Position
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when one of the following conditions is met: The power switch is turned off. The P position switch is pushed. The vehicle speed is above 5 km/h (3.1 mph). The driver door is closed.

Pattern 2:

Under the situation of pattern 1, the driver closes the door and attempts to leave the vehicle while holding the key.

In this situation, the following control is performed:

Possible Effects without Warning	Sudden vehicle start, vehicle theft, vehicle roll-away
Warning Active Condition	The warning is activated when all of the following conditions are met: The shift lever is in R, N, D or B. The vehicle speed is 0 km/h (0 mph). The key is not in the vehicle. The driver door is opened → closed.
Warning Method	Combination Meter Assembly	Buzzer	Sounds continuously
		Multi-information Display	The following warning messages are alternately displayed: Shift to P Position Key not Detected
	Wireless Door Lock Buzzer Assembly		Sounds continuously
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when one of the following conditions is met:
	Combination Meter Assembly	Buzzer		The power switch is turned off. The P position switch is pushed. The vehicle speed is above 0 km/h (0 mph). Key is returned to the vehicle.
		Multi-information Display	The following warning message is displayed: Key not Detected	The power switch is turned off. Key is returned to the vehicle.
			The following warning message is displayed: Shift to P Position	The P position switch is pushed. The vehicle speed is above 0 km/h (0 mph). The power switch is turned off.
	Wireless Door Lock Buzzer Assembly			The power switch is turned off. The P position switch is pushed. The vehicle speed is above 0 km/h (0 mph). Key is returned to the vehicle.

Situation B

There are two patterns for situation B.

Pattern 1:
When the driver door is open, the driver turns the power switch on (ACC) and attempts to leave the vehicle.

Pattern 2:

When the driver door is open, the driver turns the power switch from on (IG) to off and attempts to leave the vehicle.

In these situations, the following control is performed:

Possible Effects without Warning	Vehicle theft
Warning Active Condition	The warning is activated when either of the following patterns is met: Pattern 1: The power switch is on (ACC). The driver door is opened. The remote air conditioning system is off. Pattern 2: The power switch is off. The shift control is unlocked. The driver door is opened.
Waning Method	Combination Meter Assembly	Buzzer	Sounds continuously at short and even intervals
		Multi-information Display	-
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when one of the following conditions is met: The power switch is turned on (IG). The driver door is closed. The power switch is turned off and the shift control is locked. The remote air conditioning system is turned on.

Situation C

There are 2 patterns for situation C.

Pattern 1:

When the hybrid vehicle control system is left running and park (P) is selected, the driver closes the driver door and attempts to leave the vehicle while holding the key.

In this situation, the following control is performed:

Possible Effects without Warning	Vehicle theft, hybrid vehicle control system cannot be restarted, discharged battery
Warning Active Condition	The warning is activated when all of the following conditions are met: Park (P) is selected. The power switch is in a mode other than off. The key is not in the vehicle. The driver door is opened → closed. The vehicle speed is 0 km/h (0 mph).
Warning Method	Combination Meter Assembly	Buzzer	Sounds once
		Multi-information Display	The following warning message is displayed: Key not Detected
	Wireless Door Lock Buzzer Assembly		Sounds 3 times
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when either of the following conditions is met: The power switch is turned off. The key is returned to the vehicle.

Pattern 2:

Under the situation of pattern 1, the driver touches the lock sensor on the door outside handle assembly.

In this situation, the following control is performed:

Possible Effects without Warning	Vehicle theft, discharged battery
Warning Active Condition	The warning is activated when all of the following conditions are met: The power switch is in a mode other than off. Park (P) is selected. All doors are closed. The key is not in the vehicle (within one of the detection areas). The lock sensor is on. The vehicle speed is 0 mph (0 km/h).
Warning Method	Combination Meter Assembly	Buzzer	Sounds once
		Multi-information Display	The following warning message is displayed for 60 seconds (and then automatically turned off). Turn Power Off Key not Detected
	Wireless Door Lock Buzzer Assembly		Sounds continuously
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when one of the following conditions is met:
	Combination Meter Assembly	Multi-information Display	The power switch is turned off. The shift lever is in R, N, D or B. The vehicle speed is above 0 km/h (0 mph).
	Wireless Door Lock Buzzer Assembly		5 seconds have elapsed after the wireless door lock buzzer assembly is activated. Any door is opened. The power switch is turned off. The shift lever is in R, N, D or B. The vehicle speed is above 0 km/h (0 mph). Key is returned the vehicle.

Situation D

When the hybrid vehicle control system is left running, a passenger leaves the vehicle while holding the key.

In this situation, the following control is performed:

Possible Effect without Warning	Hybrid vehicle control system cannot be restarted
Warning Active Condition	The warning is activated when all of the following conditions are met: The power switch is in a mode other than off. A door other than the driver door is opened → closed. The vehicle speed is 0 mph (0 km/h). The key is not in the vehicle.
Warning Method	Combination Meter Assembly	Buzzer	Sounds once
		Multi-information Display	The following warning message is displayed: Key not Detected
	Wireless Door Lock Buzzer Assembly		Sounds 3 times
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when either of the following conditions is met: The power switch is turned off. The key is returned to the vehicle.

Situation E

When the key is not in the vehicle or the key battery is dead, the driver attempts to start the hybrid vehicle control system or turn the power switch on (IG).

In this situation, the following control is performed:

Possible Effects without Warning	Confuses the user
Warning Active Condition	The warning is activated when all of the following conditions are met: The power switch is pushed. The key is not in the vehicle. The immobiliser system is set.
Warning Method	Combination Meter Assembly	Buzzer	Sounds once
		Multi-information Display	The following warning message is displayed for 15 seconds (and then automatically turned off). Key not Detected
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	Check if the key is in the detection area. If the key is in the detection area, press the wireless door lock switch and confirm that the indicator comes on. If the indicator does not come on, replace the key battery with a new one.

Situation F

The vehicle is driven using a key that has a low battery.

In this situation, the following control is performed:

Possible Effect without Warning	Smart key system does not function
Warning Active Condition	The warning is activated when both of the following conditions are met: The power switch is turned off after being left on (IG) for more than 20 minutes. The key battery voltage is low.
Warning Method	Combination Meter Assembly	Buzzer	-
		Multi-information Display	The following warning message is displayed for 15 seconds (and then automatically turned off). Key Battery Low
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	The key battery is replaced with a new one.

Situation G

A malfunction of the power management control ECU is detected.

In this situation, the following control is performed:

Possible Effect without Warning	Malfunction detection
Warning Active Condition	A malfunction of the power management ECU is detected.
Warning Method	Combination Meter Assembly	Buzzer	-
		Multi-information Display	-
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		The amber indicator blinks at 2-second intervals (goes off automatically after 15 seconds).
Warning Stop Condition	The power management control ECU returns to normal.

Situation H

There are two patterns for situation J.

Pattern 1:

A warning message appears on the multi-information display when the driver does not follow the proper procedure to start the vehicle.

In this situation, the following control is performed:

Possible Effects without Warning	Usability function
Warning Active Condition	The warning is activated when all of the following conditions are met: The power switch is turned off. Driver door is closed → opened. The power switch is turned from off to on (ACC) more than twice with the hybrid vehicle control system off and brake pedal not depressed.
Warning Method	Combination Meter Assembly	Buzzer	-
		Multi-information Display	The following warning message is displayed for 10 seconds (and then automatically turned off). Depress Brake Pedal and Push Power Switch to Start
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	The power switch is pushed with the brake pedal depressed.

Pattern 2:

A message indicating how to start the hybrid vehicle control system appears on the multi-information display when the shift lever is in a position in which the hybrid vehicle control system cannot be started.

In this situation, the following control is performed:

Possible Effects without Warning	Usability function
Warning Active Condition	The warning is activated when all of the following conditions are met: The hybrid vehicle control system is stopped. The vehicle speed is 0 km/h (0 mph). More than 0.5 seconds have elapsed after the power switch is turned on (IG). The shift lever is R, N, D or B.
Warning Method	Combination Meter Assembly	Buzzer	-
		Multi-information Display	The following warning message is displayed: Shift to P Position to Start
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when one of the following conditions is met: The P position switch is pushed. The shift lever is moved to N. The vehicle speed is above 0 km/h (0 mph). The power switch is turned off or on (ACC). The hybrid vehicle control system is started.

Situation I

There are two patterns for situation K.

Pattern 1:

When the power switch is pushed, the key cannot be detected in the vehicle two times in a row.

In this situation, the following control is performed:

Possible Effects without Warning	Usability function
Warning Active Condition	The warning is activated when all of the following conditions are met: The immobiliser system is set. The key is not in the vehicle. When the power switch is turned on (ACC) or on (IG), a certification error occurs two times in a row.
Warning Method	Combination Meter Assembly	Buzzer	Sounds once
		Multi-information Display	The following warning message is displayed for 60 seconds (and then automatically turned off). Depress Brake Pedal, Touch Power Switch with Key
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when either of the following conditions is met: The immobiliser system certification result is OK. Key certification in the vehicle has stopped either because 30 seconds have elapsed after any of the doors is opened and closed, or because the brake pedal is depressed.

Pattern 2:

The driver attempts to start the hybrid vehicle control system after performing a driver door key linked unlock operation.

In this situation, the following control is performed:

Possible Effects without Warning	Usability function
Warning Active Condition	The warning is activated when all of the following conditions are met: A driver door key linked unlock operation is performed. The immobiliser system is set. The power switch is pushed. The key is not in the vehicle.
Warning Method	Combination Meter Assembly	Buzzer	Sounds once
		Multi-information Display	The following warning message is displayed for 60 seconds (and then automatically turned off). Depress Brake Pedal, Touch Power Switch with Key
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when either of the following conditions is met: The immobiliser system certification result is OK. The Key is returned to the vehicle.

Situation J

A warning message appears on the multi-information display when the driver attempts to turn the power switch off with the shift lever in R, N, D or B.

In this situation, the following control is performed:

Possible Effects without Warning	Usability function
Warning Active Condition	The warning is activated when both of the following conditions are met: The shift lever in R, N, D or B. The power switch is turned from on (IG) to on (ACC).
Warning Method	Combination Meter Assembly	Buzzer	-
		Multi-information Display	The following warning message is displayed: Shift to P Position and Push Power Switch Turn Power Off
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when either of the following conditions is met: The P position switch is pushed. The power switch is turned to a mode other than on (ACC).

Situation K

A warning message appears on the multi-information display when automatic power off operation occurs.

In this situation, the following control is performed:

Possible Effects without Warning	Battery Saving function
Warning Active Condition	The warning is activated when all of the following conditions are met: Park (P) is selected. The power switch is on (ACC) or on (IG). The vehicle speed is 0 km/h (0 mph). The hybrid vehicle control system is stopped. The power source control system is turned off by automatic power off function.
Warning Method	Combination Meter Assembly	Buzzer	-
		Multi-information Display	The following warning message is displayed for 10 seconds (and then automatically turned off). Auto Power Off to Conserve Battery
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	The power switch is turned to a mode other than off.

Situation L

A warning message appears on the multi-information display when a key with a depleted battery is touched to the power switch while depressing the brake.

In this situation, the following control is performed:

Possible Effects without Warning	Malfunction detection
Warning Active Condition	Key certification result is OK.*
Warning Method	Combination Meter Assembly	Buzzer	Sounds once
		Multi-information Display	The following warning message is displayed for 10 seconds (and then automatically turned off). Depress Brake Pedal and Push Power Switch to Start
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		The amber indicator blinks
Warning Stop Condition	The warning is stopped when either of the following conditions is met: The hybrid vehicle control system is started. The key is returned to the vehicle.

*: This situation occurs following situation M.

Situation M

A warning message appears on the multi-information display when the vehicle starts moving without the registered key in the vehicle interior.

In this situation, the following control is performed:

Possible Effects without Warning	Hybrid vehicle control system cannot be restarted
Warning Active Condition	When vehicle speed is detected after the key is removed from the vehicle, the warning is activated (only for first time).
Warning Method	Combination Meter Assembly	Buzzer	Sounds once
		Multi-information Display	The following warning message is displayed: Key not Detected
	Wireless Door Lock Buzzer Assembly		-
	Power Switch Illumination		-
Warning Stop Condition	The warning is stopped when either of the following conditions is met: The power switch is turned off. The key is returned the vehicle.

CONSTRUCTION AND OPERATION

Fig 1: Identifying Engine Indicator Light

Power Switch
The power switch consists of a momentary type switch, 3 color (amber, green, greenish white) LEDs, and a transponder key amplifier.
- The greenish white LED is for illumination.
- The amber and green LEDs are for the indicator lights. The driver can check the present power source mode and whether the hybrid control system can start in accordance with the illumination state of the indicator light.
- When the power management control ECU detects an abnormality in the push-button start system, it makes the amber indicator light flash. If the hybrid control system stopped in this state, it may not be possible to restart it.

Indicator Light Condition

POWER SWITCH INDICATOR LIGHT CONDITION

Power Source Mode/Condition	Indicator Light Condition
Power Source Mode/Condition	Brake Pedal Released	Brake Pedal Depressed, Park (P) selected
off	off	Turns on (Green)
on (ACC, IG)	Turns on (Amber)	Turns on (Green)
on (READY)	off	off
System malfunction	Flashes (Amber) for 15 sec.	Flashes (Amber) for 15 sec.

Power Management Control ECU
The power management control ECU consists of the IG1 NO. 1, IG1 NO. 2, IG1 NO. 3, IG2, ACC, P/POINT relay actuation circuits and CPU.

HINT:

Before removing the auxiliary battery, make sure to turn the power switch off. The power management control ECU constantly stores the present power source mode in its memory. Therefore, if the power supply for the power management control ECU is interrupted by disconnecting the auxiliary battery, the power management control ECU restores the power source mode after the auxiliary battery is reconnected. For this reason, if the auxiliary battery is disconnected when the power switch is other than off, the power source mode will be restored to the vehicle at the same time the power source mode is restored to the power management control ECU (by reconnecting the auxiliary battery).

PUSH-BUTTON START FUNCTION OPERATION

This system has different power source mode patterns depending on the brake pedal condition and shift lever position.

Brake Pedal	Shift Lever	Power Source Mode Pattern
Depressed	P	When the power switch is pushed once. off → on (READY)
Not depressed	P	Each time the power switch is pushed. off → on (ACC) → on (IG) → off
Not depressed	Except P	Each time the power switch is pushed. on (ACC) → on (IG) → off
-	P	When the power switch is pushed in the on (READY) condition. on (READY) → off
-	Except P	When the power switch is pushed in the on (READY) condition. on (READY) → off

When the key battery is low, the push-button start function can be operated by holding the key against the power switch.

After approximately 1 hour has elapsed with the power switch on (ACC) or on (IG) and park (P) selected, the power management control ECU will automatically cut the power supply (the power source mode will change to off).
The illustration below shows the transition of power source modes.
Transition of power source modes:

Fig 2: Transition Of Power Source Modes Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

While the vehicle is being driven normally, operation of the power switch is disabled. However, if the hybrid control system must be stopped in an emergency while the vehicle is being driven, pressing the power switch 3 times quickly or pressing and holding the power switch for 2 seconds or more stops the hybrid control system. The power source mode will change from on (READY) to on (ACC).

WHEN KEY BATTERY IS LOW
1. To operate the push-button start function when the key battery is low, hold the key close to the power switch with the brake pedal depressed.
  
  Fig 3: Holding Key Close To Power Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. The power management control ECU transmits a key verification request signal to the certification ECU (smart key ECU assembly) when it receives the stop light switch signal.
3. The certification ECU (smart key ECU assembly) does not receive an ID code response from the entry door control receiver, so it actuates the transponder key amplifier built into the power switch.
4. The transponder key amplifier outputs an engine immobiliser radio wave to the key.
5. The key receives the radio wave, and returns a radio wave response to the transponder key amplifier.
6. The transponder key amplifier combines the key ID codes with the radio wave response, and transmits it to the certification ECU (smart key ECU assembly).
7. The certification ECU (smart key ECU assembly) judges and verifies the ID code, and transmits a key verification OK signal to the power management control ECU. The buzzer in the combination meter sounds at the same time.
8. After the buzzer sounds, if the power switch is pressed within 10 seconds with the brake pedal not depressed, the power source mode changes to on (ACC) or on (IG), the same as in the normal condition.
  HINT:
  
  The key (for card type) operation inspection can performed using the same procedure as for the key (for standard type).
DIAGNOSIS
The power management control ECU can detect malfunctions in the push-button start function when the power source mode is on (IG).

When the ECU detects a malfunction, the amber indicator light of the power switch flashes to warn the driver. At the same time, the ECU stores a 5-digit Diagnostic Trouble Code (DTC) in its memory.
- The indicator light warning continues for 15 seconds even after the power source mode is changed to off.
- The DTC can be read by connecting the Techstream to the DLC3.
- The push-button start function cannot be operated if a malfunction occurs.

KEY DIAGNOSTIC MODE

HINT:

Key diagnostic mode checks if the key within a selected antenna detection area is operating normally. The results are output through the wireless door lock buzzer assembly.

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Smart Key / Utility / Key Communication Check.

Check the values by referring to the table below.

SMART KEY (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

Tester Display	Inspection Range
Overhead + Front Room*1	No. 1 indoor electrical key antenna assembly (for front floor)
Overhead + Rear Room*2	No. 2 indoor electrical key antenna assembly (for center floor)
Overhead + Back Door (inside)*3	No. 3 indoor electrical key antenna assembly (for rear floor)

When the key is brought near the selected antenna, check that the wireless door lock buzzer sounds.
1. *1: No. 1 indoor electrical key antenna assembly (for front floor)
  
  Fig 4: Identifying Electrical Key Diagnostic Mode Inspection Points
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  Place the key on the driver or front passenger seat cushion.
2. *2: No. 2 indoor electrical key antenna assembly (for center floor)
  
  Fig 5: View Of Key Diagnostic Mode Inspection Points (Center Floor)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  Place the key on the rear seat cushion.
3. *3: No. 3 indoor electrical key antenna assembly (for rear floor)
  
  Fig 6: Identifying Electrical Key Diagnostic Mode Inspection Points (Rear Floor)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  Place the key on the luggage area.