Lexus LC Hybrid Control Unit Error

2019 Lexus LC hybrid overheating – control unit error. Seriously? At 205658 km, I'm seeing coolant spills, check engine light, and engine overheating. Diagnostics point to a control unit communication error. Has anyone else battled this gremlin?

4 comment(s)

I had similar problems with my LC. Control module, you say? What codes are you pulling?

Yeah, the diagnostics say a communication fault with the control unit. Likely cause: defective cable or plug connection to the component. Before ripping everything apart, is that consistent with what you saw? Any specific connectors I should check first?

Consistent, yes. Honestly, I'd just have it checked professionally. Could be a pain to troubleshoot on your own without proper tools. Turned out to be a short. It's worth the money if you ask me.

Appreciate the input. It was indeed a chafed wire harness causing the communication error. New harness and some electrical tape later, all good. 95€ repair. Thanks!

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