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.
2008 BMW M5 (E60) V10-5.0L (S85)FACTORY OEM SERVICE PROCEDURE
Knock Sensor Module: Service and Repair
13 62 660 - Replacing left or right ionic current control unit (S85)
Necessary preliminary tasks:
- Read out fault memory of DME control unit; if necessary, work through test schedules
- Switch off ignition
- Remove intake filter housing
Note:
Illustration shows and description refers to the left ionic current control unit. The procedure is identical for the right ionic current control unit.
Unfasten screws.
Remove cover (1).
Release plug connector (1) and pull off.
Unfasten screws.
Remove ionic current control unit (2).
Note:
Now clear the fault memory.
Factory Service Tools
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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.