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Home >> Lexus >> 2012 >> HS 250h >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Smart Access System (For Entry Function) (Diagnostics - Introduction) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (For Entry Function) >> Problem Symptoms Table >> Problem Symptoms Table
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Problem Symptoms Table

HINT: 

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

SMART ACCESS SYSTEM WITH PUSH-BUTTON START

Symptom Suspected Area Reference
Entry answer-back buzzer does not sound Wireless door lock control system Refer to Entry Answer-back Buzzer does not Sound
Certification ECU (smart key ECU assembly) -
All door entry lock/unlock functions and wireless functions do not operate Power door lock control system Refer to All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate
Key (for Standard) -
Key battery -
Fuse (ECU-B, ECU-B2) -
Wire harness or connector -
Door control receiver -
Certification ECU (Smart key ECU assembly) -
All door entry lock/unlock functions do not operate using the key (for card type), but operate using the keys (for standard)* Key battery Refer to INSPECTION
Key (for Card Type) -
All door entry lock/unlock functions do not operate, but wireless functions operate Power door lock control system Refer to All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate
Key -
Certification ECU (Smart key ECU assembly) -
Driver side door entry unlock function does not operate Power door lock control system Refer to Driver Side Door Entry Unlock Function does not Operate
Front door outside handle assembly (for driver side) -
Certification ECU (Smart key ECU assembly) -
Wire harness or connector -
Front passenger side door entry unlock function does not operate Power door lock control system Refer to Front Passenger Side Door Entry Unlock Function does not Operate
Front door outside handle assembly (for front passenger side) -
Certification ECU (Smart key ECU assembly) -
Wire harness or connector -
Driver side door entry lock and unlock functions do not operate Power door lock control system Refer to Driver Side Door Entry Lock and Unlock Functions do not Operate
Front door outside handle assembly (for driver side) -
Certification ECU (Smart key ECU assembly) -
Wire harness or connector -
Front passenger side door entry lock and unlock functions do not operate Power door lock control system Refer to Front Passenger Side Door Entry Lock and Unlock Functions do not Operate
Front door outside handle assembly (for front passenger side) -
Certification ECU (Smart key ECU assembly) -
Wire harness or connector -
Driver side door entry lock function does not operate Power door lock control system Refer to Driver Side Door Entry Lock Function does not Operate
Front door outside handle assembly (for driver side) -
Certification ECU (Smart key ECU assembly) -
Wire harness or connector -
Front passenger side door entry lock function does not operate Power door lock control system Refer to Front Passenger Side Door Entry Lock Function does not Operate
Front door outside handle assembly (for front passenger side) -
Certification ECU (Smart key ECU assembly) -
Wire harness or connector -
Entry interior alarm does not sound Meter/gauge system Refer to Entry Interior Alarm does not Sound
Certification ECU (Smart key ECU assembly) -
Room oscillator does not recognize key Indoor electrical key oscillator (for front floor) Refer to Room Oscillator does not Recognize Key
Indoor electrical key oscillator (for rear floor) -
Certification ECU (Smart key ECU assembly) -
Wire harness or connector -
Luggage compartment door entry unlock function does not operate when key is outside luggage compartment Luggage compartment door opener system Refer to Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment
Outside electrical key oscillator (for luggage compartment) -
Luggage compartment door opener outer switch -
Certification ECU (Smart key ECU assembly) -
Wire harness or connector -
Key luggage compartment lock-in prevention function does not operate Indoor electrical key oscillator (for luggage compartment) Refer to Key Luggage Compartment Lock-in Prevention Function does not Operate
Certification ECU (Smart key ECU assembly) -
Wire harness or connector -