1994 BMW 540i Service and Repair Manual

This factory service and repair manual for the 1994 BMW 540i covers a four-door sedan in Base trim with a 4.0L V8 under the hood, double overhead camshafts, naturally aspirated, gasoline. It is a single-specification book for a car built before diagnostics moved onto a laptop, which means the procedures lean on measurement: pressures, resistances, clearances and torque values, taken with hand tools and read against the figures printed alongside each step.

Engines covered

• 4.0L V8 — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan

Trims covered

• Base

Known issues on the 1994 540i. Four recalls stand on the federal record. One concerns the cooling system, where a failed thermostat, pump or belt can raise temperature and pressure until the heater core end piece cracks and sprays hot coolant into the cabin. Another concerns a throttle cable bushing that can break and hold the throttle valve partly open, so the car does not slow as expected. A third covers a brake light switch that can stick on or off. Owners logged eight complaints, four of them on engine cooling and three on the power train, systems documented here.