LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Audi >> 2000 >> S4 Automatic >> Repair and Diagnosis >> Electrical >> Component Locations >> Electrical Component Locator >> Control Units
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Control Units

CONTROL UNITS

Component Component Location
ABS Control Module In left front corner of engine compartment.
Air Bag Control Module In center console. See Figure.
Antenna Selection Control Module In trunk, on CD changer bracket.
Central Locking/Interior Light Delay/Anti-Theft Alarm Control Module On bottom right of luggage compartment. See Figure.
Cruise Control, Control Module Behind right side of dash. See Figure.
Door Warning Lights Control Module On 8-pin relay carrier, position 5. See Figure.
Fresh Air Blower Control Module Behind right side of dash.
Headlight Leveling Control Module Under right side of rear seat.
Heated Door Lock Control Module (Left) Upper part of left front door. See Figure.
Motronic Engine Control Module (ECM) Near brake booster, in protective case. See Figure.
Power Sunroof Control Module At center of windshield header, above headliner.
Radiator Fan Control Module In lower right front corner of engine compartment, on frame rail.
Rear Light Control Module On 13-pin relay carrier, position No. 4 & No. 5. See Figure.
Throttle Valve Control Module (1.8L) On left side of engine, on intake manifold. See Figure.
Throttle Valve Control Module (2.7L) On front of engine, on intake manifold. See Figure.
Throttle Valve Control Module (2.8L) On rear of engine, on intake manifold. See Figure.
Transmission Control Module (TCM) Under carpet, forward of passenger's seat. See Figure.
Ultra-Sound Sensor Control Module Below center of rear seat. See Figure.