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Home >> Lexus >> 2012 >> IS 250C Automatic Trans >> Repair and Diagnosis >> Electrical >> Starter >> Smart Access System With Push-Button Start (For Entry Function) (Diagnostics & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> Symptom Tests >> Front Passenger Side Door Entry Unlock Function does not Operate >> Description

Front Passenger Side Door Entry Unlock Function does not Operate: Description

If the front passenger door entry lock function operates normally, but its entry unlock function does not, this means that the request code from the front passenger door is being output normally. In this case, a malfunction in the touch sensor circuit (from the certification ECU (smart key ECU assembly) to the front door outside handle assembly (touch sensor)) is suspected.