1988 BMW M6FACTORY OEM SERVICE PROCEDURE

Control Units

CONTROL UNITS LOCATION

Component Location
ABS Electronic Control Unit Behind right shock tower.
Active Check Control Module In dash, left of steering column.
Central Locking Control Unit At left of glove box.
Chime Module Under left side of dash, on hush panel.
Cruise Control, Control Unit Under left side of dash.
Evaporator Temperature Regulator On left side of heater-A/C unit.
Fresh Air Door Control Unit On left side of heater-A/C unit.
Interior Light Timer Control Under left side of dash, on body electrical bracket.
Level Control Unit In front of left rear axle.
Lock Heater Control Unit In left front door, near door lock.
Memory Seat Control Module Under front of left front seat.
Motronic Control Unit Above glove box.
On-Board Computer Module At center of dash.
Passenger Seat Controller Under right front seat, on frame.
Supplemental Restraint System Diagnostic Module Under right side of dash.
Transmission Control Unit Under left side of dash.
Wiper Control Unit In power distribution box. See Figure .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.