Quirky Close Assist (1997 S320) - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 06-15-2009, 08:07 AM Thread Starter
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Date registered: Jun 2009
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Quirky Close Assist (1997 S320)

I purchased this S320 nine months ago and have since noticed my doors intermittently do not auto close.

When I purchased the car, I noticed that my driver does not "close assist" and the truck lid flips wide open rapidly when I press the release button or switch from inside the car. Is this trunk release a normal thing or is it supposed to release a little first and then allow manual opening?

It all came to a head when the trunk did not "close assist" and left a little gap that allows water in from car washes,etc.

I searched the internet and found that disconnecting the vacuum pump resets things and I did this with the unit in the trunk close to the gas tank. Since this, all the doors and trunk (except for the driver door) function as before. What went wrong that led me to this??
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