System overview
The following illustration shows the system overview without the model-specific exhaust flap.
Courtesy of BMW OF NORTH AMERICA, INC.
| Item |
Explanation |
| 1 |
Vacuum reservoir |
| 2 |
Pressure converter |
| 3 |
Vacuum unit, wastegate valve |
| 4 |
Brake servo |
| 5 |
Non-return valve |
| 6 |
Non-return valve |
| 7 |
Vacuum pump |
| 8 |
Non-return valve |