System Circuit Diagram
SYSTEM CIRCUIT DIAGRAM LEGEND
| Key | Explanation | Key | Explanation |
|---|---|---|---|
| 1 | Rain-light sensor (RLS) | 2 | Ride-height sensors (one on the right-hand side of the front axle, and one on the right-hand side of the rear axle) |
| 3 | Brake light switch | 4 | Zero-position sensor |
| 5 | Direction indicator/main beam switch | 6 | Multi-function steering wheel |
| 7 | The light switch must be in position "A" | 8 | Yaw rate sensor in DSC sensor |
| 9 | Basic module (GM) | 10 | Electronic transmission control (EGS) |
| 11 | Steering angle sensor | 12 | Wheel speed sensor (4 wheel speed sensors on each vehicle) |
| 13 | AHL control unit for the adaptive headlights (AHL stands for adaptive headlights | 14 | Light switch cluster (LSZ) |
| 15 | Control unit in the instrument cluster (KOMBI), gateway (data interface) between the K bus and PT CAN | 16 | Stepper motor controller (SMC) Control unit for adaptive headlight stepper motors and for automatic headlight-range adjustment stepper motors |
| 17 | Stepper motor for adaptive headlights | 18 | Stepper motor for automatic headlight-range adjustment |
| 19 | Xenon control unit with D2-S bulb and mechanical screen in the bi-xenon headlight for redirecting the D2-S bulb for main beam | 20 | Headlight |
| 21 | Trailer module (AHM), if fitted | 22 | Green indicator light (LED) for automatic driving lights control and for the adaptive headlights (on the light switch cluster) |
| LIN bus | Local bus (Local Interconnect Network) between AHL and SMC | K bus | Body bus |
| PT CAN | Powertrain CAN | Terminal R | Terminal R |
| Terminal 15 | Terminal 15 (ignition) | Terminal 30 | Terminal 30 |