2009 S550 4Matic
05-24-2021, 11:55 AM
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2009 MB S550 4Matic
2009 S550 4Matic
I have a 2009 S550 4Matic. The suspension has lowered on it and I can't communicate with the suspension control unit to reset it. Can someone tell me which diagnostic device to use that will reset it. I have an Autel MD808 Pro but it can't see that control unit. I'm a DYI'r , so I'm looking to not spend a huge amount for it. Thanks for you help..
05-25-2021, 01:28 PM
#2
worth double checking this Front SAM, check the big orange 40 amp fuse for the AIR pump - when u have a leak the pump works too hard the fuse pops and you can't reset the system on mine it reports its been locked out
the relay is often worn where its switching too much as well
the relay is often worn where its switching too much as well
05-25-2021, 04:45 PM
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2009 MB S550 4Matic
Thanks Botus. The pump has been changed. The new pump started working for a while(Minutes), then once the vehicle was shut off, the vehicle lowered and pump never kicked on again. Re-checked all of the fuses and relays, and all appeared to be okay....
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