Safety Connect System: Precaution: Precaution

WARNING: This page is about a different car, the 2012 Lexus LS 460. However, it is still accessible from the selected car via links, so may be relevant.

WHEN DISCONNECTING BATTERY CABLE
1. 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.
WHEN AUTOMATIC COLLISION NOTIFICATION HAS ACTIVATED
1. Perform "ACN CallL End" with the Techstream to terminate ACN (Automatic Collision Notification) with the call center. Refer to ACN CALL END .
WHEN DISCONNECTING CONNECTORS FROM DCM (TELEMATICS TRANSCEIVER)
1. The engine 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 . This allows the Telematics service provider to register the new DCM (telematics transceiver) and to clear the old DCM (telematics transceiver) information from its database.
  NOTE: Do not replace the DCM (telematics transceiver) with one from another vehicle.
WHEN UNABLE TO CONTACT CALL CENTER BUT NO DTC OUTPUT
1. This may occur when the cellular signal strength is very weak. Check "DCM Operation History" with the Techstream. Refer to DCM OPERATION HISTORY .
WHEN DIAGNOSING DCM (TELEMATICS TRANSCEIVER)
1. While attempting to diagnose the DCM (telematics transceiver), do NOT use the DCM (telematics transceiver) with one from another vehicle. Each DCM (telematics transceiver) is registered to a specific VIN and should not be tested in another vehicle.