Inspection Procedure

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