Hill start not available?

Hello,

As the traction control light is on there will be fault codes stored in the ABS/ESP and possibly transmission control system.

I would suggest first conducting a CAN scan with a suitable diagnostic tool. Then post the fault codes on this site for further evaluation and possible repair solutions.

How to scan:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Cheers, Boris