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.
Hydraulic Fluid Pressure Sensor/Switch: Service and Repair
2008 BMW M5 (E60) V10-5.0L (S85)SECTION Service and Repair
23 42 580 - Replacing pressure sensor (GS7S47BG SMG)
Important!
Before working on hydraulic system:
- Reduce pressure in hydraulic system by means of Service Functions in DIS Tester (Replacement and Repair)
- Disconnect hydraulic pump relay Service and Repair in electronics box
Do not reconnect relay for entire duration of repair work
Important!
After working on hydraulic system:
- Perform bleeding using DIS Tester, refer to Service Functions in DIS Tester (Replacement and Repair)
Necessary preliminary tasks:
- Unscrew and remove splash guard.
- Remove reinforcement plate Service and Repair
Important notes on installation are described in this work step
- Remove heat shields
Disconnect connector (1).
Release pressure sensor (2).
Tightening torque 23 41 23AZ [1][2]Automatically Shifted Manual Transmission/Transaxle.
Remove sensor.
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.