Question about 2001 Audi A4
First check the battery voltage when the windows and door locks will not work (before driving) Will they function if you connect a battery charger? (Low battery voltage) This condition may be related to the security system (if installed) or poor electrical connection to the battery bus that is overcome when the alternator is charging.Be sure to check for 12V connection to the ECM and security Module (if installed)
You will probally need a schematic to check the wireing, Start with the 12v to the windows switches and discover where the power is missing. It will probally be common to the lock problem at some point.
Posted on Sep 29, 2009
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Posted on Jan 02, 2017
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