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 MANUALSBMW2008M5 (E60) V10-5.0L (S85)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESNOISE, A/C COMPRESSOR
2008 BMW M5 (E60) V10-5.0L (S85)
Noise, A/C Compressor
2008 BMW M5 (E60) V10-5.0L (S85)SECTION Noise, A/C Compressor
Repair Instruction For Noise From A/C Compressor On Driving Off
Complaint
On driving off at an engine speed of approx. 500-550 rpm, there is a clearly audible noise from the A/C compressor.
Note: The noise can be easily confused with noises from the valve gear (VANOS). Only vehicles with N62 engine!
Cause
A belt pulley made of plastic is fitted at the A/C compressor. The belt pulley vibrates and generates a clearly audible noise.
Repair instruction
Replace the A/C compressor with a modified A/C compressor that has a belt pulley made of steel.
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.