Sending Units & Sensors

WARNING: This page is about a different car, the 1998 BMW Z3 and 1998 BMW M Roadster. However, it is still accessible from the selected car via links, so may be relevant.

SENDING UNITS & SENSORS

Component	Component Location
ABS Speed Sensors	On each wheel above brake caliper.
Auxiliary Throttle Position Sensor	On throttle body.
Brake Pad Sensor (Left Front)	On left front wheel, above brake caliper.
Brake Pad Sensor (Right Rear)	Behind right rear wheel.
Camshaft Position Sensor (Cylinder Identification)	On top front of engine. See Figure.
Crankshaft Position/RPM Sensor	On rear left side of engine.
Dual Temperature Sensor (Coolant Temperature)	On left front of engine, below intake manifold. See Figure.
Engine Coolant Temperature Sensor	On front of engine. See Figure.
Evaporator Temperature Sensor	On right side of left footwell.
Fuel Sensor	In fuel tank.
Fuel Tank Pressure Sensor	Under rear storage compartment.
Hall Effect Camshaft Sensor	On front of engine.
Hot Film Air Mass Meter	On left side of engine compartment, on air intake tube.
Intake Air Temperature Sensor (1.9L)	On left front of engine compartment, in air cleaner assembly.
Intake Air Temperature Sensor (2.8L)	On left front of engine compartment, on air intake assembly. See Figure.
Knock Sensor	On top front of engine.
On-Board Computer Temperature Sensor (1.9L)	On left front wheelwell.
On-Board Computer Temperature Sensor (2.8L)	In right side of front bumper.
Oil Temperature Sensor (M Roadster)	On right side of oil filter.
Oxygen Sensor	Under center of car, in front of catalytic converter.
Oxygen Sensor	Under center of car, behind catalytic converter.
Oxygen Sensor I (2) (Front & Rear) (M Roadster)	On catalytic converter.
Oxygen Sensor II (2) (Front & Rear) (M Roadster)	On catalytic converter.
Seat Occupancy Detector	Under right front seat.
Throttle Position Sensor	On throttle body. See Figure.
Vehicle Speed Sensor	On differential.