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.
DSC unit
The DSC unit consists of the DSC control unit and a hydraulic unit. The DSC control unit activates the hydraulic unit via valve coils.
| Index | Explanation |
|---|---|
| 1 | DSC control unit |
| 2 | Hydraulic unit |
| 3 | 47-pin plug connection |
The DSC unit contains a brake pressure sensor. This brake pressure sensor registers the braking pressure applied by the brake pedal and the brake booster. The brake pressure sensor has a measuring range from 0 to 250 bar. Its zero point is only synchronized during driving.
The new concept of the DSC unit enables more exact control. 2 x 3 pump elements with ø 6.5 mm work in the pump motor. This concept results in significantly improved pressure dynamics. It means that the brake pedal pulses to a lesser degree during ABS control. It also leads to higher control quality with Hill Descent Control (HDC).
| Index | Explanation |
|---|---|
| A | DSC 8 PLUS |
| B | DSC Premium |
| 1 | Volumetric flow [l/min] |
| 2 | Time [s] |
The power distribution box at the junction box electronics (JBE) supplies the DSC unit with voltage. Once terminal 30 for the return-flow pump, once terminal 30 for the solenoid valves. The DSC control unit receives terminal 30F.
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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.