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Mercedes A Klasse Hybrid Turbocharger Issue

My 2019 Mercedes A Klasse Hybrid is driving me nuts Check engine light's on, feels like it's lost half its power, and the engine response is just awful Plus, there's this whistling noise, turning into a loud hissing when I accelerate Sometimes it even stalls at idle Oh, and the fuel consumption is through the roof I suspect it's something to do with the turbocharger Anyone had a similar actuator fault Could it be the boost pressure sensor

4 comment(s)

Sounds familiar I had almost the same symptoms with my A Klasse, though I never checked the fuel consumption That whistling noise is a giveaway Have you checked the electrical bypass valve Could be a defective boost control valve causing a boost pressure actuator fault

The electrical bypass valve Where exactly is that located And how would I even go about checking it Is there a way to test the pressure sensor

Honestly, I'm no mechanic But yeah, it definitely sounds like the same issue I had Best bet is to take it to a workshop They'll be able to diagnose the boost pressure actuator fault properly In my case, it was the electrical bypass valve that was defective and causing all the turbocharger issues It cost me around 250€ to get it sorted

Thanks for the info I took it to a workshop, and you were spot on It was indeed the electrical bypass valve causing the boost pressure actuator fault New valve fitted, and the car's running like new again Cost me about 250€ as well Cheers

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