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2011 E220 CDi air suspension issue.

myoldmerce220

New Member
Joined
Oct 26, 2024
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1
Location
Kent, UK
Car
S212 E220CDi 2011
Can anyone confirm the voltage I should be seeing across the compressor relay actuating feed. The airmatic compressor won’t run because the relay isn’t operating.
If I put a 12volt battery across the terminals it clicks in and out loudly however the low voltage I’m getting from the supply won’t operate it.
I can’t determine where the supply comes from as I haven’t been able to find a suitable circuit diagram but I believe it. Ah come from the air suspension control unit in the passenger footwell, can anyone confirm this please?
 

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