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Very sorry to hear you needed to replace the ECU. Is it sorted now?

yes, you're correct, the previous threads revealed if the gear housing is WHITE then I will need 3Q0713128, if its a BLACK housing then i will need 5Q0713128A.

Everything just like the youtube , unplug the original gear box signal cable, reconnect the new micro switch with the gear box cable..... Restart the engine and i guessed i didn't make anything wrong but fault error still exists

Googled a lot to resolve "Error: workshop! Only leave vehicle in Position P " and the Micro Switch 5Q0713128A had already installed but the fault error still exist!! Please got me some advise!

I am lucky enough that i got the error in the dashboard occasionally " Error: workshop! Only leave vehicle in Position P". Thanks for the previous posts that the add-on micro switch, if the gear housing is WHITE then I will need 3Q0713128, if its a BLACK housing then i will need 5Q0713128A But now i am thinking about how to remove the center console and please share your experience how to take them out, the cover A is the most straight forward. I needed to take out C also but I think part B in both left and right first which is the most difficult one. Many thanks in advance.