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.
Electrical Feed Pump
The electrical feed pump is fitted on the clutch unit and is supplied with voltage from the Differential Electronic Module (DEM). When the engine is started and reaches an engine speed of over 400 RPM the electrical feed pump is supplied with voltage from the control module.
The feed pump pumps oil to the annular pistons, whose rollers move into contact with the hub's cam curve. At the same time the oil flows to the operating piston, so that the play in the multi-plate clutch unit is eliminated. The coupling is then able to react rapidly and regulate as required.
Four-wheel drive does not function in the event of a fault in the feed pump.
The feed pump can be diagnosed.
Use the Manual With the Right Hardware
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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.
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