Lexus IS250 IS220d GSE20 ALE20 PRE-CRASH SAFETY

Lexus IS250 IS220d GSE20 ALE20 PRE-CRASH SAFETY

The seat belt control ECU operates the pre-crash safety system based on the stored data that informs that the vehicle is LHD or RHD model. LHD or RHD refers to the seating position of the driver, not which side of the road the vehicle is driven on.
Therefore, when replacing the seat belt control ECU, it is necessary to store the information about whether the vehicle is a LHD or RHD model. This can be performed by following these steps:

Use the intelligent tester to check if the multiplex communication system is functioning normally.

The pre-crash safety system optimizes and activates occupant protection equipment (see below) to attempt to reduce damage due to a collision.

Lexus IS250 IS220d GSE20 ALE20 PRE-CRASH SAFETY

Lexus IS250 IS220d GSE20 ALE20 PRE-CRASH SAFETY

If a terminal contact point malfunction or part installation problem occurs, removal and reinstallation of the suspected part may return the system to normal. However, be aware that the normal condition may only be temporary.

Disconnect the connector from the heater fuel pump.