Shifting issues due to internal problems in high mileage automatic transmissions can be difficult to resolve without transmission replacement.
Problems for specific Volkswagen Jetta TDI years:
Car problem reports
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Most reported 2012 Volkswagen Jetta TDI problems
Rear door drivers-side. When using Keyless entry doors won't lock. The door above is culprit. All others lock. A short alarm sounds when all doors are locked. Presently no alarm sounds. Any suggestions for a fix. By the way I did use my second clicker which is brand new. Therefore battery is new.
Oil and carbon tend to build up, creating restrictions in the intake manifold. Symptoms will be loss of power (sometimes severe) and poor fuel economy.
One or both head lights may not work due to premature head light bulb burnout and/or bulb harness failure. Care should be taken to inspect the head light harness connector for damage when replacing bulbs. Damaged connectors should be replaced.
drains battery because electric fan does not shut off. Dealer replaced fan free of charge due to recently out of warranty.