Trafic automatic transmission shifting issues

Hi, I'm having transmission issues with my 2021 Renault Trafic diesel. It has 193749 km on the clock. The automatic transmission seems to be struggling – the shifting is all over the place. The transmission indicator light keeps popping up, and sometimes it feels like the gearbox is in emergency mode. Has anyone experienced anything similar?

4 comment(s)

Sounds frustrating! I had similar symptoms on my old Opel Insignia – also an automatic. Did you happen to check the vehicle voltage? Turns out, undervoltage can really mess with the automatic transmission's electronic controls.

Undervoltage, huh? That's interesting. How did you figure that out? And what exactly did it affect in terms of the transmission's behavior?

Well, the garage guys found it eventually. Apparently, the low voltage was causing all sorts of erratic signals to the transmission control unit. Best thing to do is probably get it checked out at a workshop. They can diagnose the undervoltage and see if it's related to the transmission problems.

Thanks for the tip! I took it to a workshop, and you were spot on – it was indeed an undervoltage issue causing the transmission to act up. They sorted it out, replaced the oil, and did a transmission flush, costing me 240€. Shifts like new now!

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