2003 Volkswagen Jetta TDI Logo
Posted on Feb 22, 2010
Answered by a Fixya Expert

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Door latch switch

The interior light on my 03 Jetta doesn't go on when I open the drivers door. It will when I remove the key, but not when I enter the car. The alarm to let you know you've left your lights on also isn't working; and the other day the car locked me in, and when I put the key in the ignition the alarm went off. They tell me it's the door switch. How do I remove the panel to get at it, and then what is the process to replacing it????

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Michael Stephens

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  • Expert 119 Answers
  • Posted on Feb 23, 2010
Michael Stephens
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Joined: Jul 20, 2009
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These switches fail sometimes, when this happens the control unit is not aware that you have opened the door

The switch is integral with the lock unit, and they are not easy things to replace either.
remove the internal door trim. unplugg the wiring inside. remove the outer key barrel and unhook the cable from the outer handle to the lock unit. unbolt the lock unit. the window regulator will have to be unbolted from the window (remove the 2 plastic circular access panels and wind the window down to a level at which the 2 bolts are visible), lift the window clear once unbolted (using your hands, slide it upwards in its guide rails, stick it in place with tape).
once this is done the window regualtor can be unbolted (10 or so bolts) and removed, complete with the door lock.

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