Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.

CHECK MAYDAY ECU ASSEMBLY
1. Press the "SERVICES" button and check the LEXUS Link condition with the LEXUS Link call center.
OK:

System operates normally.

NG:

Current DTC 1-2 exists.

NOTE: If replacement of the ECU is necessary, replace the mayday battery (backup battery) together with the ECU. After the replacement, register the ECU (See REGISTRATION ).

NG: REPLACE MAYDAY ECU ASSEMBLY (See REMOVAL )

OK: END