Megane transmission error

I'm having a weird issue with my 2023 Renault Megane Hybrid. It's done about 197148 km. The transmission indicator light and check engine light keep popping up. The automatic transmission seems to be stuck in emergency mode, shifting is all messed up, slipping and feeling really unclean. I'm also hearing some grinding noises when it tries to change gears. I scanned it and it's throwing a "Radiator oil pressure defective" error. I'm wondering if anyone else has experienced anything similar or has any ideas on where I should start looking?

4 comment(s)

That sounds rough! The error code does point towards a radiator/oil cooler issue. When was the last time you checked your coolant levels? Have you noticed any leaks, maybe around the radiator or under the car after it's been parked for a while? It could also be something as simple as a faulty sensor, but the slipping and grinding sounds like you should definitely get it checked out soon.

Thanks for the reply! I checked the coolant levels and they seem okay, haven't noticed any visible leaks either. How would I go about checking the sensors? Is there a specific one related to the radiator oil pressure that I should be looking at?

Given that you haven't seen any leaks and the coolant level is fine, the issue might indeed be with the sensor or its wiring. However, because you're experiencing those shifting problems, I would recommend taking it to a workshop. They can properly diagnose the exact cause of the error – it could be a defective cable or plug connection. The cost to repair is about 95€.

Thanks for the advice! Took it to a local shop, and you were spot on! It was indeed a defective cable connection for the radiator oil pressure sensor. They fixed it up, cleared the codes, and now it's shifting smoothly again. Really appreciate the help!

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