mariobauer1
Talisman Engine Overheating Communication Error
Summary of the thread
A 2021 Renault Talisman is experiencing engine overheating and a control unit communication error at 192,789 km, with a check engine light and coolant leakage. The issue might stem from a bad cable or plug connection, causing data link error codes. A similar case involved a software glitch affecting control unit communication, resolved by a software update and recalibration. A workshop visit for a full check and potential software recalibration is recommended to address the problem.
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4 comment(s)
mariobauer1 (community.author)
That's good info. I'm not totally sure; the cable/plug was just my first guess. Since you had a software glitch, could you tell me more about what you saw and the error codes you got? It might help me narrow things down.
andreasstar1
Sure. It was mostly intermittent overheating, plus the check engine light. The error code said there was a communication problem with one of the engine control modules. I think they mentioned something about weird data. They did a software update and recalibration. If you're seeing similar codes, a shop that can do those updates might be a good idea. Also, make sure the cooling system isn't under too much pressure.
mariobauer1 (community.author)
Thanks for the info and the suggestion. I appreciate you sharing what you went through; it sounds like a workshop visit for a full check and maybe a software recalibration is the way to go. The eventual fix was a defective wire for 95€. I'll post what the solution is here.
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RENAULT
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TALISMAN
andreasstar1
Interesting. I had a similar issue with my Talisman, but no coolant leak. Check engine light and overheating were there, and the diagnostic said it was a software glitch messing with the control unit's communication. The shop first thought it was wiring. Are you sure it's just a cable or plug?