| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | E | Signal, front side marker light | Light switch unit |
| | | |
| 2 | E | Signal, low beam switch | Light switch unit |
| | | |
| 3 | E | Signal, left direction indicator light | Steering column switch cluster |
| | | |
| 4 | E | Signal, right direction indicator light | Steering column switch cluster |
| | | |
| 5 | M | Ground | Light switch unit |
| | | |
| 6 | E | Signal, instrument lighting dimmer | Light switch unit |
| | | |
| 7 | | Not used | |
| | | |
| 8 | E | Signal, headlight vertical aim control | Light switch unit |
| | | |
| 9 | | Not used | |
| | | |
| 10 | | Not used | |
| | | |
| 11 | A | Signal, switch lighting | Light switch unit |
| | | |
| 12 | | Not used | |
| | | |
| 13 | | Not used | |
| | | |
| 14 | E | Signal, rear fog light | Light switch unit |
| | | |
| 15 | E | Signal, fog light | Light switch unit |
| | | |
| 16 | E | Signal, high beam/headlight flasher switch | Steering column switch cluster |
| | | |
| 17 | | Not used | |
| | | |
| 18 | E | Signal, hazard warning switch | Hazard warning switch |
| | | |
| 19 | A | Signal, LED automatic high beam | Light switch unit |
| | | |
| 20 | A | Signal, LED hazard flasher switch | Hazard warning switch |
| | | |
| 21 | A | Signal, terminal 58G | Connector, instrument and locator lighting |
| | | |
| 22 | | Not used | |
| | | |
| 23 | A | 5 V supply | Light switch unit |
| | | |
| 24 | | Not used | |
| | | |
| 25 | | Not used | |
| | | |
| 26 | | Not used | |
| | | |
| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | | Not used | |
| | | |
| 2 | E | Terminal 30 | Fuse F52 |
| | | |
| 3 | A | Signal, fog light | Right fog light |
| | | |
| 4 | A | Signal, high beam | Right headlight |
| | | |
| 5 | A | Signal, braking force-dependent brake light | Tail light, left |
| | | |
| 6 | A | Signal, low beam | Left headlight |
| | | |
| 7 | | Not used | |
| | | |
| 8 | A | Signal, parking light | Right headlight |
| | | |
| 9 | A | Signal, reversing light | Tail light, right |
| | | |
| 10 | A | Combined brake/rear fog light | Tail light, right |
| | | |
| 11 | A | Signal, right auxiliary direction indicator light | Direction indicator light repeater, front left |
| | | |
| 12 | A | Rear right direction indicator | Tail light, right |
| | | |
| 13 | A | Signal, front left direction indicator | Left headlight |
| | | |
| 14 | A | Signal, parking light | Tail light, left |
| | | |
| 15 | A | Signal, headlight vertical aim control | Left headlight |
| | | |
| 16 | A | Signal, parking light | Tail light, inner left |
| | | |
| 17 | A | Signal, headlight vertical aim control | Left headlight |
| | | |
| 18 | A | Signal, parking light | Tail light, inner right |
| | | |
| 19 | A | Signal, headlight vertical aim control | Left headlight |
| | | |
| 20 | | Not used | |
| | | |
| 21 | | Not used | |
| | | |
| 22 | A/E | Signal, LIN bus | Outside mirror, passenger's side |
| | | |
| 23 | A/E | Signal, LIN bus | Driver's switch cluster |
| | | |
| 24 | A/E | Signal, LIN bus | Right headlight |
| | | |
| 25 | A/E | Signal, LIN bus | Left headlight |
| | | |
| 26 | M | Ground Ride height sensor, front | Ride height sensor, front |
| | | |
| 27 | M | Ground Ride height sensor, rear | Ride height sensor, rear |
| | | |
| 28 | A | Signal, headlight vertical aim control | Right headlight |
| | | |
| 29 | A | Supply, level sensor | Ride height sensor, rear |
| | | |
| 30 | A | Signal, headlight vertical aim control | Right headlight |
| | | |
| 31 | A | Supply, level sensor | Ride height sensor, front |
| | | |
| 32 | A | Signal, headlight vertical aim control | Right headlight |
| | | |
| 33 | | Not used | |
| | | |
| 34 | | Not used | |
| | | |
| 35 | A | Interior lights | Interior/reading lamp, front |
| | | |
| 36 | | Not used | |
| | | |
| 37 | A | Signal, braking force-dependent brake light | Tail light, right |
| | | |
| 38 | | Not used | |
| | | |
| 39 | | Not used | |
| | | |
| 40 | A | Signal, centre brake light | Auxiliary brake light |
| | | |
| 41 | A | Activation, bi-xenon shutters | Left headlight Right headlight |
| | | |
| 42 | A | Supply, stepper motors | Left headlight Right headlight |
| | | |
| 43 | A/E | Signal PT-CAN low | Connector CAN bus low |
| | | |
| 44 | A/E | Signal PT-CAN high | Connector CAN bus high |
| | | |
| 45 | A/E | K-bus signal | K-bus connector |
| | | |
| 46 | A/E | K-bus signal | K-bus connector |
| | | |
| 47 | M | Ground | Ground point |
| | | |
| 48 | E | Signal, rear level sensor | Ride height sensor, rear |
| | | |
| 49 | E | Signal, front level sensor | Ride height sensor, front |
| | | |
| 50 | A | Signal, headlight vertical aim control | Left headlight |
| | | |
| 51 | A | Signal, headlight vertical aim control | Right headlight |
| | | |
| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | E | Terminal 30 | Fuse F36 |
| | | |
| 2 | | Not used | |
| | | |
| 3 | E | Terminal 30 | Fuse F41 |
| | | |
| 4 | A | Signal, driver's power window motor, closed | Driver's window motor |
| | | |
| 5 | A | Signal, driver's power window motor, open | Driver's window motor |
| | | |
| 6 | A | Signal, high beam | Left headlight |
| | | |
| 7 | | Not used | |
| | | |
| 8 | | Not used | |
| | | |
| 9 | A | Right brake light | Tail light, right |
| | | |
| 10 | A | Courtesy lighting, driver's side | Entrance light, driver's door Entrance light, rear passenger's side |
| | | |
| 11 | A | Courtesy lighting, front passenger's side | Entrance light, passenger's door Entrance light, rear driver's side |
| | | |
| 12 | E | Supply, terminal 15 | A149a Car access system |
| | | |
| 13 | E | Door contact signal | System lock, passenger's door |
| | | |
| 14 | E | Incremental transducer 1, driver's power window | Driver's window motor |
| | | |
| 15 | E | Door contact signal | System lock, rear passenger's side |
| | | |
| 16 | M | Ground, incremental transducer, driver's power window | Driver's window motor |
| | | |
| 17 | M | Ground, incremental transducer, front passenger's power window | Passenger's window motor |
| | | |
| 18 | M | Ground | Ground point |
| | | |
| 19 | E | Reversing signal | Reversing light switch |
| | | |
| 20 | | Not used | |
| | | |
| 21 | E | Brake light switch signal | Brake light switch |
| | | |
| 22 | E | Incremental transducer 2, driver's power window | Driver's window motor |
| | | |
| 23 | E | Incremental transducer 2, front passenger's power window | Passenger's window motor |
| | | |
| 24 | E | Door contact signal | System lock, driver's door |
| | | |
| 25 | E | Incremental transducer 1, front passenger's power window | Passenger's window motor |
| | | |
| 26 | E | Door contact signal | System lock, rear driver's side |
| | | |
| 27 | E | Signal, interior light switch | Interior/reading lamp, front |
| | | |
| 28 | | Not used | |
| | | |
| 29 | | Not used | |
| | | |
| 30 | A | Signal, power window switch | Driver's switch cluster |
| | | |
| 31 | A | Signal, power window switch | Driver's switch cluster |
| | | |
| 32 | | Not used | |
| | | |
| 33 | M | Ground | Ground point |
| | | |
| 34 | E | Terminal 30 | Fuse F53 |
| | | |
| 35 | A | Signal, front passenger's power window motor, closed | Passenger's window motor |
| | | |
| 36 | A | Signal, front passenger's power window motor, open | Passenger's window motor |
| | | |
| 37 | A | Signal, fog light | Left fog light |
| | | |
| 38 | A | Signal, low beam | Right headlight |
| | | |
| 39 | | Not used | |
| | | |
| 40 | A | Signal, front right direction indicator | Right headlight |
| | | |
| 41 | A | Signal, parking light | Tail light, right |
| | | |
| 42 | E | Signal, lock central locking | System lock, driver's door |
| | | |
| 43 | | Not used | |
| | | |
| 44 | A | Signal, left auxiliary direction indicator light | Direction indicator light repeater, front left |
| | | |
| 45 | A | Rear left direction indicator | Tail light, left |
| | | |
| 46 | E | Signal, unlock central locking | System lock, driver's door |
| | | |
| 47 | A | Signal, reversing light | Tail light, left |
| | | |
| 48 | A | Signal, terminal 58G | Connector, instrument and locator lighting |
| | | |
| 49 | A | Signal, licence plate light | Licence plate lights |
| | | |
| 50 | A | Signal, parking light | Left headlight |
| | | |
| 51 | A | Combined brake/rear fog light | Tail light, left |
| | | |