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 condition sensor
The oil condition sensor is attached to the oil sump and is accessible from below. On all new engine types, there is no longer a dipstick. These engines have an electronic oil level check.
| Item | Explanation |
|---|---|
| 1 | Oil sump |
| 2 | Oil condition sensor |
| 3 | Temperature sensor |
| 4 | three-pin plug connection |
The oil condition sensor is connected via a bit-serial data interface to the engine control system.
The voltage supply is dependent on the engine version (e.g. via terminal 87, terminal 15 or terminal 15N).
The following graphic shows by way of example the voltage supply via terminal 87.
| Item | Explanation |
|---|---|
| 1 | Engine control unit |
| 2 | Oil condition sensor |
| BSD | Bit-serial data interface |
| Terminal 87 | Voltage supply via terminal 87 |
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.