Unlock GRA for Caddy SA 2.0 TDI

Hello everyone!
I installed the MFL in my Caddy. The car didn't have GRA before. I replaced the steering column control unit including the turn signal lever with a GRA version and coded it into the steering wheel electronics. The GRA is not responding at all, neither on the lever nor on the MFL. However, the other buttons on the MFL are working (phone, volume, voice input). I couldn't use the search function because I get an error message that the server is overloaded. Does anyone have a tip for me?

Hello,

First, check the measured values from the steering column control unit and the engine control unit to see if the controls on the GRA (Gear Ratio Assistance) lever are functioning correctly.

The most common mistake is incorrect wiring.

Best regards, Rainer.