System overview
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
The following graphic shows a system overview of the ignition in engine N55:
| Index | Explanation |
|---|---|
| 1 | Power distribution box, engine compartment |
| 2 | Ignition and injection relay |
| 3 | Digital engine electronics (DME) |
| 4 | Spark plug, cylinder 1 |
| 5 | Ignition coil, cylinder 1 |
| 6 | Spark plug, cylinder 2 |
| 7 | Ignition coil, cylinder 2 |
| 8 | Spark plug, cylinder 3 |
| 9 | Ignition coil, cylinder 3 |
| 10 | Spark plug, cylinder 4 |
| 11 | Ignition coil, cylinder 4 |
| 12 | Spark plug, cylinder 5 |
| 13 | Ignition coil, cylinder 5 |
| 14 | Spark plug, cylinder 6 |
| 15 | Ignition coil, cylinder 6 |