A couple of months back, I bought my 1st bimmer as I was looking for a vehicle and got a pretty sweet deal while I was not eyeing this kind of car.
After some research, I started bringing upgrades (already had sports steering and knob and sports suspensions):OBC, coding AKMB and GM5 to switch to km and lt and locking behaviour with NCS Expert. So far so good!
Went on with retrofitting multifunctions buttons on the steering wheel. Checked all connectors, slip ring etc, they wont light up and are unresponsive (horn works well and no airbag light on)
While ordering the OBC stalk got a cheap deal and came with a slip ring so I decided to swap thinking existing slip ring would be faulty: Same results.
I decided to check further the wiring behind DSC button and Radio/Fan controls but saw nothing but there were some remnants of a non-operational Hands Free kit (Nokia FHU-5) which I removed alongside with a single yellow cable running from it to the back of the radio.
I cannot see any of the nokia cables messing with the harness from the steering wheel behind the slip ring or the central console just a couple of black leads running on the lower console, past the OBD port, probably to the speakers?
In any case, the buttons wont light-up or work just as disconnected (trying turning the wheel to check slip rings). What am I missing? Where else should I look?
Thanks for reading & the help!