Lexus LX Overheating Issue

I have a 2018 Lexus LX diesel with almost 140000 km. Recently, the check engine light came on, and I've noticed the engine seems to be overheating more easily, especially in traffic. I suspect it might be related to the active air flaps in the grille not functioning correctly. Has anyone experienced a similar issue?

4 comment(s)

Sounds like a plausible theory. A faulty active air flap could definitely cause those symptoms. Have you scanned the car for any fault codes? That would give you a solid starting point to confirm if it's actually the air flaps.

Yes, I scanned it and it returned a fault code related to the active air flap. Does that confirm the electromechanism is defective?

Yep, that pretty much confirms it. The electromechanism on those air flaps is a known weak point. Unfortunately, it's not usually repairable; you'll probably need to replace the entire assembly. I would take it to a reputable workshop.

Thanks for the confirmation and advice. I took it to the workshop and they replaced the air flap assembly. The final bill was 590€ but the check engine light is now off and the overheating issue is resolved.

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