stefansky1

Mercedes GLE check engine light and VANOS issue

My 2016 Mercedes GLE with a gasoline engine has the check engine light on at 106136 km. Fuel consumption is up. I'm told it could be the inlet VANOS. Could it be a camshaft solenoid valve or power supply issue? I've read about BMW VANOS problems. I have low power but no oil sludge. I fear VANOS failure. Is it worth a 250€ repair estimate?

4 comment(s)

A faulty VANOS solenoid is a common cause. Check the solenoid valve connections and wiring for damage or corrosion. A diagnostic scan should pinpoint the exact solenoid. Confirm the oil level and condition, as low or dirty oil can affect VANOS operation. Rule out other potential causes before assuming VANOS failure. Has the engine performance degraded?

How do I test the solenoid valve connections and wiring? I have a multimeter but I'm a novice. There is a slight hesitation upon initial acceleration. Does that confirm the VANOS solenoid issue?

Diagnosing electrical issues with a multimeter can be tricky. Since you're observing hesitation upon acceleration, which is consistent with VANOS problems, and are unsure how to proceed with electrical testing, it's best to have a qualified mechanic perform a thorough diagnosis. A professional scan tool will identify the specific fault code and guide the mechanic towards the problem. You should authorize the 250€ repair estimate.

I took your advice and went to a technician. The scan revealed a faulty VANOS solenoid. It was replaced, and the engine runs well. The check engine light is off, and fuel consumption is normal. The repair cost was 250€. Thanks for the guidance.

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