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)CONTROL - MODULE TEST
2008 BMW M5 (E60) V10-5.0L (S85)
Control - Module Test
2008 BMW M5 (E60) V10-5.0L (S85)SECTION Control - Module Test
Ambient-Pressure Sensor
The ambient-pressure sensor is installed directly in the engine control module; its seated as a separate component on the printed circuit board. In the engine control module, the value is checked to ensure it remains within permitted limits.
A fault code is entered if the ambient pressure is not within the expected range. The ambient pressure is required for functions in the engine control module related to calculating the mixture composition. The ambient pressure falls the higher you go above sea level.
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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.