Mercedes W126 Climate Control Vacuum Element Problem Described



This shows the two vacuum pods that tend to fail most in post 9/85 Mercedes W126 vehicles. The two pods are for the air scoop that controls fresh/recirculated air. The problem manifests itself as center vents that mysteriously misbehave at odd times, usually when it is hottest outside.

The part numbers for the two pods are:
000 800 5775
000 800 5875

Also, while these came from a post 9/85 W126 vehicle, chances are the pods will have the same issue in the pre-9/85 cars. The major difference between these two revisions are the CCU and the vacuum solenoids which were individual prior to 9/85 and consolidated into one unit post 9/85. For all I know, the part numbers might even be the same…… I’m not sure. If anyone knows for sure please email me.


Post time: Sep-18-2017
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