Lexus ES: Vacuum Warning Switch (for Gasoline Model)

 Operation Check

OPERATION CHECK CHECK NAVIGATION SYSTEM NORMAL CONDITION (a) If the cause of a symptom is any of the following, the corresponding symptom is normal; it is not due to a malfunction. Symptom Answer A longer route than expected is chosen. Depending on the road conditions, the navigation ECU

 Stop Switch Circuit Malfunction (C164E)

DESCRIPTION When a stop light switch assembly circuit malfunction signal sent from the electronically controlled brake system is detected by the clearance warning ECU assembly, DTC C164E is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C164E Stop Switch Circuit M