Windows and sun roof opening by themselves- mb E320 sw 2000
For the first time i woke up this morning to find all the window and sunroof open. the all opened automatically during the night, after i drove it home from anchorage. i did nothing out of the ordinary except i had my summer tires changed to my winter tires.
so i closed them all this morning and in 15 minutes, without the car running they opened themselves up again., and again,,,,and again. and always, without the car running.
i live in alaska where this could become a real problem with artic blizzards and temperatures.
any advise? i have a 2000 year model (that year was not available in the pull down menu.)
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Here's a description the sun roof
Power Sunroof System Components
The power sunroof system consists of the following components:
• Sunroof module
• Sunroof switch
• Sunroof motor, with 2 hall effect sensors and limit switch
• Sunroof window
• Sunroof sunshade panel
• Power supply for the sunroof module: RAP 25 A
• Ground G402
The override function is used when needing to force a closing of the sunroof window. To override the system:
Turn ignition to ON.
Rotate the sunroof switch to the close position.
The sunroof switch data 6 circuit, or override circuit, will become grounded at the sunroof module. As long as the sunroof module sees this input, it will continue to slide the sunroof window to close, regardless of the other sunroof switch data circuits inputs.
Not familiar with the Volvo, but many cars (Toyota, Lexus, Acura, Honda, etc.) have drain holes at the corners of the sun roof assembly. These holes allow water that gets past the sunroof gasket to drain through tubes that carry the water to the bottom of the car, where it exits the car.
These drain holes are prone to clogging. If the Volvo setup is like those cars mentioned, you can see the front drain holes by opening the sunroof and looking closely at the two front corners of the assembly that holds the sunroof. I have used plastic weedeater line to open up these lines. Compressed air can also be used.
The sun roof has nylon gears that pulls the roof back and forward when activated. There is one on both sides of the sunroof track in the rear corners of the roof track housing. Unfortunately they are not replaceable by themselves and must be purchased as a unit for the whole roof track system. The cost of the replacement and labor to have it installed (if you can find someone to do it) is up to $1500 so isn't very practical to replace based on the value of the car itself. Better off to just work the broken piece out and manually put roof back in place in shut position and not use anymore, at least that was my experience with the one my daughter owns.