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.
Vacuum system
The vacuum system of the engine S63 TOP has a few changes compared to engine S63.
The vacuum pump has a two-phase design so that the largest share of the generated vacuum is available to the brake servo.
The vacuum reservoir is now no longer placed in the V space but mounted to the bottom of the oil sump. The applicable vacuum lines were adjusted accordingly.
The graphic below shows the components of the vacuum system and their installation position.
| Index | Explanation |
|---|---|
| 1 | Vacuum pump |
| 2 | Connection for brake servo |
| 3 | Connection for secondary consumers |
| 4 | Vacuum units of wastegate valves |
| 5 | Pressure converter for wastegate valve |
| 6 | Vacuum reservoir |
| 7 | Connection for vacuum unit of exhaust flaps |
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.