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 DIAGNOSISPOWERTRAIN MANAGEMENTDESCRIPTION AND OPERATIONMOTOR ELECTRONICS (DME MOTOR ELECTRONICS MSS65)INTERFACESLOCAL CAN
2008 BMW M5 (E60) V10-5.0L (S85)
Local CAN
2008 BMW M5 (E60) V10-5.0L (S85)SECTION Local CAN
Idle Actuator MSS65
Functional description, see BMW Service Technology:
TIS -> Document -> SI Technology -> Enter SBT Number
SBT number:
- 11 04 04 097
Overview of functions
The idle speed and air supply at low load are controlled with an electrical idle actuator per bank. The idle actuators are activated across a local CAN bus by the DME. The SMG control module is also connected to this local CAN bus.
Diagnosis instructions
Information for checking electric wires: The connectors on the idle actuators must not be unplugged under any circumstances! The plug contacts have vibration protection and this could be damaged.
The terminal resistors of the idle actuator /SMG-CAN are fitted as follows:
- DME: 120
- Idle actuator, bank 1: 240
- Idle actuator, bank 2: 240
- SMG: no terminal resistor
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.