LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2012 >> Sentra SE-R >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Body, Lock & Security System >> Service Information >> Intelligent Key System >> System Description >> Door Lock/Unlock/Trunk Open Function
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Door Lock/Unlock/Trunk Open Function

Only when pressing the request switch, it is possible to lock and unlock the door and open the trunk by carrying around the Intelligent Key (without some key operation).

System Diagram

Fig 1: Identifying Door Lock/Unlock/Trunk Open Function System Diagram
G04927616Courtesy of NISSAN NORTH AMERICA, INC.

Operation Description

Operation Condition

If the following conditions are not satisfied, door lock/unlock or trunk open operations will not response even if the request switch is operated.

Each request switch operation Operation condition
Lock operation
  • All doors are closed
  • Intelligent Key is outside the vehicle
  • Intelligent Key is within outside key antenna detection area even if another Intelligent Key is inside the vehicle
  • OFF position warning chime is not operated
Unlock Operation
  • Intelligent Key is outside the vehicle
  • Intelligent Key is within outside key antenna detection area
Trunk open operation
  • Intelligent Key is in the outside key antenna (rear bumper) detection area and Intelligent Key is not inside vehicle.
  • Intelligent Keys are in the outside key antenna (rear bumper) detection area and Intelligent Key is inside vehicle. But both Intelligent Key IDs are different.

Outside Key Antenna Detection Area

The outside key antenna detection area of door lock/unlock function is in the range of approximately 80 cm (31.50 in) surrounding the driver and passenger door handles. The outside key antenna detection area of trunk open function is in the range of approximately 80 cm (31.50 in) surrounding Trunk opener request switch. However, this operating range depends on the ambient conditions.

Key Reminder Function

Key reminder functions have the following 2 functions.

Key reminder function Operation condition Operation
When the door is open to closed Key reminder function is operated when
  • Intelligent Key is inside the vehicle
  • Any door is open
  • All doors are locked by door lock and unlock switch or door lock knob
  • All doors are closed
  • All doors unlock operation
  • Sound Intelligent Key warning buzzer (front of vehicle) for 3 seconds
When the trunk is closed Key reminder function is operated when
  • Intelligent Key is inside trunk room
  • All doors are closed
  • All doors are locked
  • Trunk is closed
  • Trunk open operation.
  • Sound Intelligent Key warning buzzer (front of vehicle) for 10 seconds
CAUTION:
  • The above function operates when the Intelligent Key is inside the vehicle. However, there may be times when the Intelligent Key cannot be detected, and this function will not operate when the Intelligent Key is on the instrument panel, rear parcel shelf, or in the glove box. Also, this system sometimes does not operate if the Intelligent Key is in the door pocket of an open door.
  • While the key reminder function is operated when the trunk is open/closed and the chime sounds, if the following operations are performed, the key reminder function is cleared and chime sounds are stopped.
  • Remote control door lock button operation of Intelligent Key
  • Remote control door unlock button operation of Intelligent Key
  • When the trunk is closed, the Intelligent Key is not inside the vehicle
  • When any door is open

Selective Unlock Function

When a LOCK signal is sent from front door request switch LH or RH, all doors will be locked.

When an UNLOCK signal is sent from front door request switch LH or RH once, that door will be unlocked. Then, if an UNLOCK signal is sent from the same front door request switch again within 1 minute, all other doors will be unlocked.

Hazard and Horn Reminder

When doors are locked or unlocked by a door request switch, Intelligent Key unit sends hazard request signal to BCM via CAN communication line. BCM flashes hazard warning lamps as a reminder.

Intelligent Key unit sends a chirp signal to the Intelligent Key warning buzzer (front of vehicle) as a reminder.

The hazard and buzzer reminder has a horn chirp mode (C mode) and a non-horn chirp mode (S mode).

OPERATING FUNCTION OF HAZARD AND HORN REMINDER

  C mode S mode
Door request switch operation Lock Unlock Lock Unlock
Hazard warning lamp flash Twice Once Twice -
Warning buzzer (front of vehicle) Twice Once - -

Hazard and buzzer reminders do not operate if any door switch is ON (OPEN door) and ignition switch is ON.

How to change hazard and horn reminder mode 

With CONSULT 

Hazard and horn reminder can be changed using "HAZARD ANSWER BACK", "ANSWER BACK WITH I-KEY LOCK" and "ANSWER BACK WITH I-KEY UNLOCK" mode in "WORK SUPPORT". Refer to , "CONSULT APPLICATION ITEM ".

Without CONSULT 

Refer to Owner's Manual for instructions.

Auto Door Lock Function

When all doors are locked, ignition knob switch is OFF (when ignition switch is not pressed) and key switch is OFF (when mechanical key is not inserted in key cylinder), doors are unlocked with a door request switch. When Intelligent Key unit does not receive the following signals within 1 minute, all doors are locked.

Auto door lock mode can be changed by "AUTO RELOCK TIMER" mode in "WORK SUPPORT". Refer to , "CONSULT APPLICATION ITEM ".

Room Lamp Operation

When the following conditions are met:

Intelligent Key system turns on interior lamp (for 30 seconds) by receiving UNLOCK signal from a door request switch. For detailed description, refer to "INTERIOR ROOM LAMP " .

List of Operation Related Parts

Parts marked with x are the parts related to operation.

Fig 2: Identifying Room Lamp Operation Chart
G08181153Courtesy of NISSAN NORTH AMERICA, INC.