ESP Inoperative after OM642 Oil Cooler repair
Thread Starter
Newbie
Joined: Aug 2008
Posts: 8
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1992 300TE
ESP Inoperative after OM642 Oil Cooler repair
Finished up the OM642. e320 diesel oil cooler seal repair but now the car won't turn over.
Dash warning says ESP Inoperative, See Owners Manual.
I tried to read the codes with my OBD2 reader, but it responded ELM Connected, ECU would not connect.
Battery is new and fully charged.
Any suggestions on where to look to resolve the issue?
Dash warning says ESP Inoperative, See Owners Manual.
I tried to read the codes with my OBD2 reader, but it responded ELM Connected, ECU would not connect.
Battery is new and fully charged.
Any suggestions on where to look to resolve the issue?
Super Member
Joined: Jul 2021
Posts: 528
Likes: 157
2006 E280
First, throw that ELM to the bin, and get MB specific reader (Autel, iCarsoft etc., you'll find the info from here with a little search).
Second, unlike the topic title states, your real issue is engine not turning over nor starting, correct? Was your battery disconnected? If so, and you have pre-facelift car, ESP warning goes away when you turn steering wheel lock to lock, engine running.
As for engine not turning over, check your work and see if something is not connected.
Second, unlike the topic title states, your real issue is engine not turning over nor starting, correct? Was your battery disconnected? If so, and you have pre-facelift car, ESP warning goes away when you turn steering wheel lock to lock, engine running.
As for engine not turning over, check your work and see if something is not connected.
Last edited by Heguli; Nov 14, 2024 at 05:34 PM.
MBWorld Fanatic!
Joined: Dec 2011
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From: Spain UTC/GMT +2 hours
W213 All-terrain
Without ESP the brake is not visible by the engine ECU, so it may not going to start. Check ESP connector, fuses cables brokens, etc. But also could be a divine sign to check again everything as many can happens after oil cooler repair if you clean with sharp tools...
Last edited by trigital; Nov 15, 2024 at 09:25 AM.
Thread Starter
Newbie
Joined: Aug 2008
Posts: 8
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1992 300TE
Thanks for the previous advice.
I found fuse 57 (25A) blown and after replacement the engine will turn over, but still won't start. Looking under the hood while cranking the engine I see that when I pump the pedal the Turbo Actuator linkage isn't moving. Is there a fuse that controls the Turbo Actuator and perhaps the injectors?
I found fuse 57 (25A) blown and after replacement the engine will turn over, but still won't start. Looking under the hood while cranking the engine I see that when I pump the pedal the Turbo Actuator linkage isn't moving. Is there a fuse that controls the Turbo Actuator and perhaps the injectors?
Super Member
Joined: Jul 2021
Posts: 528
Likes: 157
2006 E280
Fuse provides power to the engine control unit, which controls the various components, including the turbo actuator and injectors.
Pumping the pedal does not help to start the engine. If the engine is not running, it does not care about the input from the pedal.
Get a scanner and see what's wrong with your engine.
Pumping the pedal does not help to start the engine. If the engine is not running, it does not care about the input from the pedal.
Get a scanner and see what's wrong with your engine.
