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Discussion Starter #1
Good morning all!

Hope you are all well considering the current worldwide situation.

Hoping someone may be able to assist me with tracking down where this fault may be arising from and sorry if it has already been posted before.
Currently my 2011 for C-max titanium is constantly showing incoming call from unknown caller ID as soon as the ignition is switched on even though there is no phone connected to the car. I have tried removing all paired devices and reconnecting them, but that did nothing yo change the error.

Thank you in advance if anyone has encountered this before and is able to assist me with resolving this small inconvenience.

Kind regards

Steve
 

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Disconnect the battery for twenty minutes to purge the system.
(Radio Code..!)
 

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hi Eeejay your first thing to do is exactly what Ghost says. you need to disconnect the vehicles battery for 20 minutes to allow the vehicles modules to power down. the fault is probably with the sync module and normally a reset sorts them out.
 
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