Precaution [08/2013 - ]

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

NOTE:

When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the cable is reconnected.

System Name	See Procedure
Parking Assist Monitor System	Refer to INITIALIZATION [08/2013 - ]
Power Trunk Lid System	Refer to INITIALIZATION [08/2013 - ]

WHEN DISCONNECTING AUXILIARY BATTERY CABLE
1. Before disconnecting the cable from the negative (-) auxiliary battery terminal, wait for at least 60 seconds after turning the power switch off (w/ Navigation System). The HDD navigation unit stores the user settings after the power switch is turned off.
WHEN AUTOMATIC COLLISION NOTIFICATION HAS ACTIVATED
1. Perform "ACN CALL END" with Techstream to terminate ACN (Automatic Collision Notification) with the call center. Refer to ACN CALL END [08/2013 - ] .
2. The BUB (Back-Up Battery) must be replaced.
WHEN DISCONNECTING CONNECTORS FROM DCM (TELEMATICS TRANSCEIVER)
1. The power switch must be off.
WHEN REPLACING THE DCM (TELEMATICS TRANSCEIVER)
1. After installing a new Telematics Data Communication Module (DCM (Telematics Transceiver)), perform "DCM ACTIVATION" with the Techstream. Refer to DCM ACTIVATION [08/2013 - ] . This allows the Telematics service provider to register the new DCM (Telematics Transceiver) and to delete the old DCM (Telematics Transceiver) information from their database.
  NOTE:
  Do not replace the DCM (telematics transceiver) with one from another vehicle.
WHEN UNABLE TO CONTACT WITH CALL CENTER BUT NO DTC
1. This may occur when the cellular signal strength was very weak. Check "DCM OPERATION HISTORY" with the Techstream. Refer to DCM OPERATION HISTORY [08/2013 - ] .
WHEN DIAGNOSING DCM (TELEMATICS TRANSCEIVER)
1. While attempting to diagnose the DCM (Telematics Transceiver), do not use a DCM (Telematics Transceiver) from another vehicle. Each DCM (Telematics Transceiver) is registered to a specific VIN and should not be tested in another vehicle.