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Fitting relays

DavidL

MB Enthusiast
Joined
Feb 3, 2014
Messages
1,030
Car
s203 C55, x218 CLS63
Probably a daft question but I need to fit a new airmatic relay which has arrived. I assume it is just a case of whip the old one out and stick the new one in? I wouldn't ask for my older cars but this e55 is properly complicated electronically so it seemed sensible to put the question.
 
Yes. Ignition off. Just pull it out and replace it.
 
So I put this in last night and took it for a quick spin. No problems, no errors and car rises and falls just fine.
I've brought it to work and two thirds of the way here the engine management light comes on. I can't see how the 2 are connected but I don't tend to believe in coincidences.
I've had the EML just once before and the secondary air inj pump needed replacement.
I'll get it on STAR but there isn't anything obvious is there?
 
I shouldn't think so. Did you change the correct relay?
 

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