Limp mode after erasing stored errors
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Joined: May 2023
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W203 and W211
Limp mode after erasing stored errors
I have a W211 E200 Kompressor, recently the car was getting a paint job done but just went into limp mode. Auxiliary battery was low on voltage at 11 but got it boosted to 13 and the limp mode issue kinda got sorted but got the BAS ESP and ABS warnings. Readings on diagnosis machine did not have any current errors, they were stored which we cleared and immediately the car goes into limp mode again. Disconnected the Main ama auxiliary battery and the was okay but the warmings on the dash came back. Tried with a different diagnosis machine which again showed the errors as stored and not current. Cleared the errors and the car goes back to limp mode. Anyone experienced such? Putting the car on a machine puts the car on limp mode. Got the battery module error. Any ideas whate causing this or how to resolve?
Out Of Control!!
Joined: Apr 2019
Posts: 11,958
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
battery... limp-mode! 😳
I have a W211 E200 Kompressor, recently the car was getting a paint job done but just went into limp mode.
Auxiliary battery was low on voltage at 11 but got it boosted to 13 and the limp mode issue kinda got sorted but got the BAS ESP and ABS warnings.
Readings on diagnosis machine did not have any current errors, they were stored which we cleared and immediately the car goes into limp mode again.
Disconnected the Main ama auxiliary battery and the was okay but the warmings on the dash came back. Tried with a different diagnosis machine which again showed the errors as stored and not current. Cleared the errors and the car goes back to limp mode. Anyone experienced such?
Putting the car on a machine puts the car on limp mode.
Got the battery module error.
Any ideas whate causing this or how to resolve?
Auxiliary battery was low on voltage at 11 but got it boosted to 13 and the limp mode issue kinda got sorted but got the BAS ESP and ABS warnings.
Readings on diagnosis machine did not have any current errors, they were stored which we cleared and immediately the car goes into limp mode again.
Disconnected the Main ama auxiliary battery and the was okay but the warmings on the dash came back. Tried with a different diagnosis machine which again showed the errors as stored and not current. Cleared the errors and the car goes back to limp mode. Anyone experienced such?
Putting the car on a machine puts the car on limp mode.
Got the battery module error.
Any ideas whate causing this or how to resolve?
In this case the fault being stored and not current means it's a Transient Condition... like an extreme voltage during crank that bounces back with alternator after starting. Fault is only present for short-times but long enough to crash unstable modules.
> Concider these actions... :
- Regularly float charge your batteries to full with a CTEK (not just jump/boost!)
- Measure alternator voltage to be better than 13.7V
- Check Mfg date of batteries (replace if expired)
- Use/buy a scanner to keep tab on faulty modules
Limp-modes are seriously extreme disfunctions. Try to deal with the root cause ASAP.
I don't think "clearing faults causes limp-modes".
Clearing faults fixes absolutely nothing.
To prevent "limp modes" try to act on available clues.
Failure to address issues causes them to progress.
🤞
Last edited by CaliBenzDriver; May 11, 2023 at 04:21 PM.
