LS 460 AWD V8-4.6L (1UR-FSE) (2009)
Emergency Contact Module: Service Precautions
CELLULAR COMMUNICATION: LEXUS LINK SYSTEM: PRECAUTION
PRECAUTION
1. NOTICE FOR DISCONNECTING CABLE FROM NEGATIVE (-) BATTERY TERMINAL
NOTE:
After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and
settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery
terminal.
2. NOTICE FOR INITIALIZATION
NOTE:
When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected.
3. INSPECTION PRECAUTION FOR LEXUS LINK SYSTEM
(a) When the mayday battery runs low, the mayday ECU sets DTC 6-1. Perform troubleshooting according to the malfunction indicated by 6-1.
4. WHEN REPLACING MAYDAY ECU
(a) If replacement of the ECU is necessary, replace the mayday battery (backup battery) together with the ECU. After the replacement, register the
ECU See: Testing and Inspection/Programming and Relearning.