System overview
| Index | Explanation |
|---|---|
| 1 | Oxygen sensor before catalytic converter |
| 2 | Oxygen sensor after catalytic converter |
| 3 | Blow-off valve |
| 4 | Digital engine electronics |
| 5 | Pressure converter for wastegate valve |
| 6 | Engine ventilation heating |
| 7 | Electric changeover valve for exhaust flap (model-specific) |
| 8 | Luggage compartment power distribution box |