Originally Posted by TerminatorX5

so, it seems that there is NOTHING lit up next to the gear lever itself.

Let's test what is going on there first -

the gear selector light (module E82) is connected via couple connectors.

One of them is connector X1600. this is a 3-pin connector, pins 1 and 3 are engaged.

Pin 1 receives signal from Steptronic switch S224 (pin 4 from connector X1561) and the pin 3 is connected to the EGS, the transmission module. The other 2 pins from connector X1561 are going directly to EGS module.

it seems that this is the one connector (X1600) that is responsible for the M/S light function.


connector X1599 is the one that actually receives the signal from the lever indicating in which gear the lever is and pinout for 6-pin connector X1599 is

pins
2 - PARK
3 - REVERSE
4 - NEUTRAL
5 - DRIVE


study the pictures attached, and see if you can pull the leather boot surrounding the gear selector, and take a look inside - check to see if the connectors are connected, check to see if the connectors are corroded, check for coca cola or coffee spills...

connectors of interest are X1599 and X1600 and switch S224 for the M/S function and S224 for the regular PRND function.