Limp mode not solved

tonykirt72

Active Member
Joined
Feb 27, 2017
Messages
72
Car
Mercedes E320 cdi sport
Got error code for turbo actuator on e320 and have just replaced actuator but still same problem, vanes move freely, only goes into limp mode within 1st minute of start up in morning generally then ok rest of day, anyone any ideas? Thanks
 

Black Scorpion

Active Member
Joined
May 11, 2017
Messages
153
Location
North East
Car
AMG C63
Have you changed the overboost switch?

This detects when the actuator gets too much boost or is faulty.
It causes the car to go into limp mode as it detects a fault.

I would change this as it should cure your problem.
 
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tonykirt72

Active Member
Joined
Feb 27, 2017
Messages
72
Car
Mercedes E320 cdi sport
Will that give the fault code for the actuator? Where would I find it, thanks
 

Black Scorpion

Active Member
Joined
May 11, 2017
Messages
153
Location
North East
Car
AMG C63
Yes as it is the only thing that detects faults with the actuator.
Switch will be throwing fault codes as it is at fault not the actuator.

It is found on the manifold.
 

Larkone

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Joined
Jun 13, 2016
Messages
690
Location
Essex
Car
2008 CLS 320 CDI facelift
Aren't the actuators matched to the turbo during manufacturer and therefore changing them means they are not matched so would throw an error. You can get replacement electric motors and gears for them, but not the main circuit board.
 

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