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 DIAGNOSISSTARTING AND CHARGINGCHARGING SYSTEMALTERNATORSERVICE AND REPAIR
2008 BMW M5 (E60) V10-5.0L (S85)
Alternator: Service and Repair
2008 BMW M5 (E60) V10-5.0L (S85)SECTION Service and Repair
12 31 020 - Removing and installing/replacing alternator (S85)
Necessary preliminary tasks:
- Switch off ignition
- Follow instructions for disconnecting and connecting battery Instructions for Disconnecting and Connecting Battery
- Disconnect battery negative lead Disconnecting and Connecting Battery Negative Lead and cover
- Remove radiator Removing and Installing Radiator
- Remove alternator drive belt Replacing Alternator Drive Belt.
Unfasten screws.
Carefully press leads (1) to one side.
Unfasten screws.
Pull alternator (1) forwards until connections are accessible.
Unlock plug (1) and remove.
Release nut (2), remove battery positive lead from alternator.
Tightening torque 12 31 1AZ [1][2]Specifications.
Remove alternator (3).
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.