stefansky1
Mercedes GLE check engine light and VANOS issue
Summary of the thread
A 2016 Mercedes GLE experienced a check engine light and increased fuel consumption, potentially due to a VANOS issue. The problem was suspected to be related to the inlet VANOS, possibly involving a camshaft solenoid valve or power supply issue. After consulting with a technician, a diagnostic scan confirmed a faulty VANOS solenoid, which was replaced, resolving the engine performance issues and normalizing fuel consumption. The repair cost was 250€.
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4 comment(s)
stefansky1 (community.author)
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?
sinamoore1
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.
stefansky1 (community.author)
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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MERCEDES
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GLE
sinamoore1
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?