S4 V8-4.2L (BHF) (2004)
Emergency Contact Button: Service and Repair
Telematics Control Head E264, Removing And Installing
The telematics control head is integrated with the front interior light module.
NOTE:
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In the event any of the OnStar control buttons are either inadvertently or deliberately pressed for longer than 15 seconds, the OBD program
assumes a button is sticking. The red status light will come on and a DTC loads in memory.
Perform OBD program using VAS 5051/5052 and check DTC memory for DTC 01526 "mechanical malfunction". Inform customers accordingly.
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A faulty control button cannot be replaced separately. Replace complete telematics control head.
CAUTION:
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Switch off all electrical consumers.
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Switch ignition off and remove ignition key.
Removing:
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Remove front interior lamp module.
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Carefully lift connector guide - 1 - and press off in direction of - arrow-.
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Release retaining hooks - arrows - and remove button -1 -.
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Disconnect electrical connection - 2 - and remove switch module.
Installing:
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Install in reverse order of removal.