Help Help 91 850i

:banghead: HELP IF YOU CAN , MY 850 HAS A PROBLEM THE ALARM HAS STOPED WORKING (AFTER MARKET NOT BMW) AND THE CENTRAL LOCKING AS WELL , THE HEATER CONTROL AS WELL ONLY THE BLOWER ON THE SCREEN WORKS , AND THE WINDOWS STAY IN THE DROP POSITION AS IF THE DOORS ARE OPEN , BUT THEY GO UP WHEN THE CAR IS IN REVERSE.
HOPE SOME ONE CAN HELP AS I WAS TOLD IT WAS THE MAIN CONTROL MODULE AND IVE CHANGED THAT.:2cents: :2cents: :2cents: :2cents: :2cents: :2cents: :rofl:

Have you tried having the car diagnosed with the BM computer?