BMW Cruise Control Up for sale is a OEM Factory BMW E32 E34 735i, 525i, and 535i Cruise Control Module Unit. It is part# VDO 412.212/005/003 1388043 ( 1 388 043 ) . There are several model BMW's these fit, I do not have all applications listed. A faulty unit can cause intermittent or no cruise control function. First check that the pedal switches are still adjusted properly and your cruise cable is still attached. If this all checks good, the ECU is probably faulty. I only sell the OEM units, never aftermarket so they are the same quality as your original. Thanks for looking!