ECU repair/replace
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2010 E550, 273 Engine: 2012 S550, 278 Engine
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'08 S550
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S500
its very normal for these engine ECUs to die - its popping up on the forum all day long - same Bosch junk - EVERYTHING THEY MADE IN THE LAST 20 YEARS HAS A DELIBERATE SHORT SHELF LIFE
you can't tell me BMW Bosch ECUs are worse than Merc Bosch ECUs can you ?
the ONLY difference is Mercs tend to be owned by innocent people with too much money, and either out the car or pay a dealer to sort so we never hear about it
whereas every car thief in Europe steals BMWs and don't like to take the thing to a dealership - so YouTube have to build a datacentre every other day to hold all the Bosch engine ECU repair videos....
https://www.youtube.com/results?sear...9.7+ECU+repair
Last edited by BOTUS; Apr 20, 2025 at 04:43 AM.
MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,141
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
If you test it “in car” I would do a simple check: Disconnect/reconnect CGW harness a couple of times and see if it changes anything.
CGW in my car (and many others) had unsoldered pins that caused all sorts of errors on many modules. It did not say CGW has a problem but the modules that all connect to it did.
Soldering the pins fixed it all.
Last edited by Arrie; Apr 20, 2025 at 12:45 PM.
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From: Spain UTC/GMT +2 hours
W213 All-terrain
As information about Fault code or car is missing, you can try:
https://www.bosch-repair-service.com...-control-unit/
https://www.bosch-repair-service.com...-control-unit/
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e320 cdi
I have used other places and been glad to get my broken parts back from them.
Replacment was $1000 two years ago and it lasted a over a year before failing while running. Thinking of getting a second one made for next failure event.
