Since my service (2016 Twizy, first MOT and service in August), I’ve had an intermittent SERV light and associated minor (but noticeable) loss of power. It tends to come on after about 3-5 minutes of driving, and sometimes disappears during a trip but often stays on until I stop. There’s also a battery indicator above the speed (battery with “!” shown), I think relating to the big battery.
I’ve bought a 12V battery to replace the original one as it’s a cheap option and rules that out as a fault. As yet I haven’t fitted it, and looking through the forums I’m not sure the 12V battery is the issue.
I’ve got OVMS (v3), and when the car is off (now) the 12V battery is showing as 12.3V and the main battery is 53.5V.
It’s charging OK (at least if goes up to 100% when I charge it, and nothing seems untoward on the charge indicator).
Does anyone know how to use OVMS to read fault codes? I’ve tried various things but can’t get a sensible view so far.
Any other suggestions (obviously taking it to Renault is one, but it’s a bit of a pain to get there, and will end up costing just for diagnosis I’m sure!)
Thanks for any help!