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Old 02-28-2020, 10:59 AM
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Diseasel300 Diseasel300 is offline
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Join Date: May 2016
Posts: 6,071
There's a vacuum pump for the door locks. It should shut off automatically as soon as vacuum is built in the lock system. Running for a full 30 seconds sounds like there's a leak somewhere and the pump is timing out. In W126 chassis the pump is in the spare tire well. Not sure on W124, it may be under the rear seat.
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