the door locks on my 300D appear to be acting a little strange - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 04-14-2010, 09:46 PM Thread Starter
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Date registered: Mar 2004
Vehicle: 1981 300D, 1967 VW BUG
Location: SoCal
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the door locks on my 300D appear to be acting a little strange

like I'll open the driver side door but the other door locks won't come up until I run the engine a little. I'm told maybe I have a leak somewhere or a 'bellow's" is leaking air due to old age. So is there a link with step by step instructions how I can take apart what I need to to check vacuum lines, and whatever else and replace if necessary. Thanks.
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post #2 of 2 (permalink) Old 04-15-2010, 12:57 AM
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Date registered: Jun 2004
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Your car has the vacuum actauted door locks. In each door is small vacuum operated bellows. the easiest solution is to remove each door lining and check the operation of the bellows. The fuel door and trunk lid also have the same set up. You need to do a bit of exploring in the trunk to find the leaky bellows .
Under the hood,the yellow lead going into the fireqwall from the engine compartment is the main vaccum line .make sure it is secure and hasn't come adrift anywhere.
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