Kangoo High Voltage System Error

I've had similar battery warning issues with my Kangoo. Reduced power and system malfunction sounds familiar. Was there any electrical fault beforehand, like maybe the inverter?

The inverter seems fine at first glance. Do you remember if the system errors were permanent or intermittent?

The errors were intermittent to begin with, then became permanent. I'd strongly suggest taking it to a workshop to get the high voltage battery looked at. It really sounds like a battery drain problem. Don't try to solve it yourself.

Thanks for the insight. I took it to a certified shop, and you were right, the high-voltage battery was defective and needed replacement. The repair cost me 290€.