2012 Mercedes ML350 Bluetec diesel losing power when driving up hill

caz88r

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Your Mercedes
2012 ML350 Bluetuc
HI everyone,

Reaching out for some advice.

I own 2012 Mercedes ML350 BlueTEC. It was running fine and lately, started encountering a problem while driving.

When driving on the motorway, the car performs fine on flat terrain. Occasionally, as soon as I start going uphill, the power drops significantly and seems to stay that way for a long period of time

The only way it goes back to its normal mode is if I pull up, switch off the engine and restart in about 5 minutes. Then it goes back to normal driving.

This has happened quite a few times now over the last month. I had sent it to a workshop and the computer could not diagnose any fault. They even kept it for a week and drove it around and it did not happen.

This does bother me. Hope someone will be able to provide some advice. This will be greatly appreciated.



Kind regards

Carl
 

onefortheroad

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Your Mercedes
Me -2019 GLC 350 coupe AMG line. Mrs- 1.2 vauxhall Corsa 2021 ,orange with a black roof. .
Hard to believe no error codes were logged or the eml hasn't lit up yet , common faults are turbo actuator faults , back pressure sensor fault, boost pressure issues.
 


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