Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONDIGITAL MOTOR ELECTRONIC (DME)FUNCTIONAL DESCRIPTIONSA/C COMPRESSOR CUT-OUT
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
A/C Compressor Cut-Out
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION A/C Compressor Cut-Out
OPERATION
A circuit breaker relay temporarily switches off the magnetic clutch on the A/C compressor during acceleration. The Digital Motor Electronic (DME) control unit also switches off the compressor relay for 10 sec when driving off (full load at vehicle speeds below 13 km(h).
A circuit breaker relay temporarily switches off the magnetic clutch on the A/C compressor during acceleration. The Digital Motor Electronic (DME) control unit also switches off the compressor relay for 10 sec when driving off (full load at vehicle speeds below 13 km(h).
RENDER: 1.0x
NO RELATED
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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.