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.
Oil-pressure control: Notes
The oil pump must ensure a reliable oil supply under all operating conditions. The new engines have characteristic-map-regulated activation of the oil pump (not volume-flow-regulated). This pump only supplies the amount of oil required by each operating range of the engine. The following advantages result:
- Lower pump output necessary
- Lower fuel consumption of the engine
The oil-pressure control is electrically activated by the DME via an electrohydraulic oil pressure regulating valve (solenoid valve). The oil pressure sensor handles the monitoring.
The electrical activation enables further optimization of the power dissipation of the oil pump.
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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.