Overheating problems and defective bypass valve in the Renault Captur Hybrid 2024: experiences and suggested solutions

Hey, I had a similar problem with my 2022 Renault Clio Sport. I would rate my car expertise as rather low, but I know a bit about it. My garage also had problems with the cable connection to the coolant bypass valve. My garage repaired the connection and everything has been running smoothly ever since. The repair cost me 155 euros. It was a bit expensive, but it fixed the problem. As every car is a little different, it would be helpful if you could tell me a bit more about the symptoms and error codes of your car? That way I could help you more accurately.

(Translated from German)

Thanks for your input. Glad your car is working properly again. My Captur is displaying an error code P0128. This code indicates a problem with the coolant temperature. For all I know, it could be the thermostat or the temperature sensor, but I'm not sure. My mileage is 110177 km and the latest inspection was about 3 months ago. Would be grateful if anyone has any more advice or solutions.

(Translated from German)

Hey, thanks for the additional information! Incidentally, my Clio has around 123,000 km on the clock. Your error code P0128 could actually indicate a faulty thermostat or temperature sensor. With my similar problem, it was the coolant bypass valve, but that would have been indicated by a different fault code. Your next step could be to check the thermostat and temperature sensor. These are not expensive and relatively easy to replace if they are faulty. Unfortunately I can't give specific prices for the Captur as I only know the cost for my Clio. If the problem still persists, it might be best to take the car to the garage for diagnosis. It could also be something more complicated like a faulty water pump or a problem in the cooling system. Hope this helps you! And please keep us posted, would love to know how it turns out. Have a safe journey!

(Translated from German)

Many thanks for your advice! I will definitely take your suggestion on board and have the thermostat and temperature sensor checked. Yes, if nothing helps, I plan to take my Renault to the garage. I hope it's nothing too complicated or expensive. I will definitely keep you posted. Wish me the best of luck! And thanks again for your help, it's really useful and reassuring to know that others have had similar problems and got them sorted. See you then!

(Translated from German)