Light Module X38 Connector End View
Pin Assignments At Plug Connector X38
| Pin | Type | Description /Signal type | Connection /Measuring notes |
|---|---|---|---|
| 1 | A | Activation, right bi-xenon headlight | Right headlight |
| 2 | A | Activation, left bi-xenon headlight | Left headlight |
| 3 | A | Signal, parking light | Right headlight |
| 4 | -- | Not occupied | |
| 5 | -- | Not occupied | |
| 6 | A | Signal, fog light | Right fog light |
| 7 | A | Signal ground, rear load sensor | Ride height sensor |
| 8 | E | Signal, instrument lighting dimmer | Light switch unit |
| 9 | E | Terminal 30 | Fuse F106 |
| 10 | A | Tail light | Taillight, right |
| 11 | A | Signal, licence plate light | Connector License plate lights |
| 12 | A | Signal, left high beam light | Left headlight |
| 13 | A | Signal, left/right direction indicator switch | Direction indicator/high beam headlight switch |
| 14 | E | Data cable | Trailer module |
| 15 | A | Signal, right low beam light | Right headlight |
| 16 | A | Signal Rear right direction indicator | Trailer module |
| 17 | E | Terminal R | Fuse F9 |
| 18 | A | Signal Rear left direction indicator | Trailer module |
| 19 | E | Signal, headlight beam height control | Light switch unit |
| 20 | A | Signal, headlight beam height control Q21 motor, right | Right headlight |
| 21 | A | Signal, headlight beam height control Q21 motor, left | Left headlight |
| 22 | A | Signal, right auxiliary direction indicator light | Direction indicator light repeater, front right |
| 23 | A | Signal, front right direction indicator | Right headlight |
| 24 | A | Signal Rear left direction indicator | Connector Rear left direction indicator |
| 25 | -- | Not occupied | |
| 26 | -- | Not occupied | |
| 27 | A | Signal ground, front load sensor | Load sensor, headlight beam height control |
| 28 | A | Signal, high beam/headlight flasher switch | Direction indicator/high beam headlight switch |
| 29 | A | Signal, rear fog light | Tail light, inner left |
| 30 | A | Signal Right brake light | Connector Right brake light |
| 31 | E | Terminal 15 | Fuse F32 |
| 32 | E/A | K bus signal | K bus connector |
| 33 | E | Signal, rear fog light | Light switch unit |
| 34 | E | Signal, fog light | Light switch unit |
| 35 | E | Signal, low beam | Light switch unit |
| 36 | E | Signal, parking light | Light switch unit |
| 37 | A | without adaptive headlight Signal, headlight beam height control Q11 motor, right | Right headlight |
| 37 | A | with adaptive headlight Supply, stepper motors | Right headlight |
| 38 | A | with adaptive headlight Supply, stepper motors | Left headlight |
| 38 | A | without adaptive headlight Signal, headlight beam height control Q11 motor, left | Left headlight |
| 39 | A | Signal, left auxiliary direction indicator light | Direction indicator light repeater, front left |
| 40 | -- | Not occupied | |
| 41 | -- | Not occupied | |
| 42 | A | Signal, brake light | Taillight, left |
| 43 | A | Terminal 58g | Connector, dimmed instrument lighting |
| 44 | A | Signal, fog light | Left fog light |
| 45 | A | Signal, LED hazard flasher switch | Hazard warning/central locking switch |
| 46 | A | Signal, +5 V rear load sensor | Ride height sensor |
| 47 | E | Terminal 30 | Fuse F107 |
| 48 | A | Signal, center brake light | Auxiliary brake light |
| 49 | A | Signal, front left parking light | Left headlight |
| 50 | A | Signal, right high beam light | Right headlight |
| 51 | E | Brake light switch signal | Brake light switch |
| 52 | E | Signal, hazard flasher switch | Hazard warning/central locking switch |
| 53 | A | Signal, low beam | Left headlight |
| 54 | A | Signal, front load sensor | Load sensor, headlight beam height control |
| 55 | A | Signal, rear load sensor | Ride height sensor |
| 56 | M | Ground | Ground connector |
| 57 | M | Ground | Ground point |
| 58 | A | Signal, headlight beam height control Q12 motor, right | Right headlight |
| 59 | A | Signal, headlight beam height control Q12 motor, left | Left headlight |
| 60 | A | Signal, LED automatic high beam | Light switch unit |
| 61 | -- | Not occupied | |
| 62 | -- | Not occupied | |
| 63 | A | Signal, rear fog light | Tail light, inner right |
| 64 | A | Tail light | Taillight, left |
| 65 | E | Data cable | Dynamic stability control (DSC) |
| 66 | A | Signal, +5 V front load sensor | Load sensor, headlight beam height control |
| 67 | A | Signal, front left direction indicator | Left headlight |
| 68 | A | Signal Rear right direction indicator | Taillight, right |
| 69 | A | 5 V supply | Light switch unit |
| 70 | E | Ground | Light switch unit |
| 71 | E/A | CAN bus high | Connector, CAN bus |
| 72 | E/A | CAN bus low | Connector, CAN bus |
| 73 | A | Signal, locator lighting | Light switch unit |
| 74 | E | Signal, instrument lighting dimmer | Light switch unit |
| 75 | E/A | Signal, LIN bus with adaptive headlight | Right headlight |
| 75 | A | Signal, headlight beam height control Q22 motor, right without adaptive headlight | Right headlight |
| 76 | A | Signal, headlight beam height control Q22 motor, left without adaptive headlight | Left headlight |
| 76 | E/A | Signal, LIN bus with adaptive headlight | Left headlight |