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noahblaze45

GLE Engine Overheating and Air Flap Fault

I own a 2018 Mercedes GLE with a gasoline engine. The check engine light illuminated recently. A diagnostic scan revealed an active air flap fault. Concurrently, the engine is overheating. I suspect a defective electromechanism. Has anyone encountered a similar issue?

4 comment(s)

tildameyer55

I have a GLE as well, although I haven't had your specific overheating problem, I did have a check engine light related to the air intake. The active air flaps are part of the engine's thermal management system. They control airflow to improve aerodynamics and warm-up times. When they fail, as indicated by your fault code, it can indeed trigger the check engine light. The electromechanism you mentioned is the likely culprit. To explain further, these flaps are electronically controlled, and that electromechanism is what actuates them. If it's defective, the flaps might not open or close properly. This can cause the engine to work harder, potentially leading to overheating. Did the diagnostic scan give you a specific fault code number?

noahblaze45 (Author)

Thank you for the information. No specific fault code number was provided. The diagnostic scan indicated an active air flap fault. Is the repair complex?

tildameyer55

Given that you are experiencing overheating, I would not consider the repair simple. If the active air flap is stuck closed, it could severely restrict airflow and cause significant engine damage. The electromechanism itself might be replaceable, but access could be difficult, potentially requiring removal of other engine components. Considering the overheating, I strongly advise against attempting a DIY repair without proper expertise. It is probably best to take it to a qualified workshop. I ended up doing the same, and I was relieved.

noahblaze45 (Author)

I appreciate the advice. I took the vehicle to a workshop. The electromechanism was defective, as suspected. The total repair cost was 590€. The issue is now resolved.

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