Telematics System Messages

If there is any fault with the telematics system, the following messages are displayed on the Instrument Cluster (IC) message center:

• 'SOS System Limited' - Displayed if call is possible but with limited service. For example, if there is any fault with the microphone or the speaker (Diagnostic Trouble Code (DTC) present) or the back-up battery is depleted but the call can be placed and vehicle data transmitted.

• 'SOS System Not Available' - Displayed if Telematics Control Module (TCU) is unable to attempt a call. For example, if no network available or TCU has no Controller Area Network (CAN) network connectivity.

A DTC is set in the TCU in the event of 'SOS System Limited'.

SOS System Limited 

This message is driven by DTCs, relating to hardware issues:

• External Global System for Mobile communication (GSM) antenna connection failure
• Global Positioning System (GPS) antenna connection failure
• Emergency call (eCall) switch connection failure
• Hardwired connection failure with Restraints Control Module (RCM)
• Microphone connection failure
• Global Navigation Satellite System (GNSS) signal receiver failure, TCU internal failure
• Speaker connection failure
• TCU back-up battery depleted.

SOS System Not Available 

This message is driven by four possible scenarios:

• The TCU is disconnected or unresponsive
• Failed Emergency call (eCall) due to no cellular network coverage
• Failed eCall due to no eCall number provisioned
• Modem failure.