SRS - Service PrecautionS

ELECTRICAL
EL93-002
MARCH 19, 1993
ALL MODELS

Title:
SUPPLEMENTAL RESTRAINT SYSTEM SERVICE INFORMATION

All Lexus SRS systems are equipped with a back up power source so the air bag can still be deployed even if the vehicle battery is damaged in a collision.

During vehicle service this means that the air bag could be inadvertently deployed if work is started too soon after disconnecting the negative battery terminal

Because of slight variations in the Supplemental Restraint System of each model, the period of time specified to wait after removal of the battery terminal now varies (from 20 - 90 seconds).

SRS service waiting time specification

To avoid a potential error during servicing of the SRS, the waiting time is being standardized for all models to 90 seconds regardless of what the specification is in the applicable repair manual. Work should not be started until after 90 seconds has passed from the time the ignition switch is turned to the lock position and the negative (-) terminal of the battery has been disconnected.