Internal Fault. Permanent Fault

Internal fault. Permanent fault

Replacing the keypad unit
The fault has probably occurred as a result of an internal fault in the car-phone module. This type of fault means that the car-phone module must be replaced.

Caution! A new car-phone module is delivered without software. The car-phone module must be programmed in order to operate after replacement.

Other information:
- To program and access or replace the car-phone module, see Telephone module/-control module (PHM), changing Service and Repair.

Select "Continue" when the fault has been remedied.

Continue - Verification

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Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on
- Switch on the car-phone.
Make a call so that both the handset and the hands-free system are used. See the instruction manual.
Ignition off.
Ignition on.
Read off the diagnostic trouble codes (DTCs).
Check that the relevant diagnostic trouble code (DTC) has switched status from permanent to intermittent fault.





Has the status of the diagnostic trouble code (DTC) changed?

Yes - Verification completed

No - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit Fault-Tracing

No - Attempt New Test

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Attempt New Test - Replacing the keypad unit

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