I have an electric towbar and the light on the button is red and i have an error code and the towbar dont fold inside 

Morning Markus

Welcome to the Forum

All clean underneath nothing jamming it ? What is the Error Code ? Have you checked it online ?

I would check all wiring and connections, fuses and relays, then make sure that the mechanism isn't blocked or jammed then clear the code and see if it works. A diagnostic session will help if your stuck

Dave

 

This is the code

Morning Markus

Sorry that isn't a code it is only the cars display warning. 

To begin with have the fuses been checked? Check the fuses if they are OK then you need a proper diagnostic session to identify the problem.

I have seen 1 failed trailer control unit and 2 failed gears in the folding motors (one on my own X5)

All 3 I was able to fix by sourcing replacement a replacement control unit, and stripping and rebuilding the folding motors.

Dave