Actuate Brake Lights, Basic Function - GF82.10-P-1022A
Model all (CAR)
General
The brake light indicates to the traffic following behind any intention of the driver to decelerate the vehicle. The brake light can be switched on by operating the service brake or by an autonomous application of the brake.
Function requirement
- Terminal 15 ON
Actuate brake light
When the brake pedal is operated, the brake system registers the driver's deceleration request through a brake light switch or a pedal angle sensor on the brake pedal.
In the event of autonomous brake application, the brake light is actuated by the corresponding driver assistance system.
During maximum full-stop braking, the brake lights flash as they are actuated (except Canada version or USA version).
Depending on the vehicle network architecture involved, either the central controller unit or the rear central controller unit receives the switch on brake light request and the actuates the brake lights.
Vehicles with trailer hitch
During trailer operation the brake lights on the trailer are also actuated. Depending on the vehicle network architecture involved, either the central controller unit or the rear central controller unit requests the brake lights to be switched-on on the trailer. The trailer recognition control unit implements this request.
Except Canada version and USA version
If the vehicle was decelerated by maximum full-stop braking from a speed of at least 70 km/h to less than 3 km/h, the hazard warning flashers are automatically activated.
Canada version or USA version
The turn signal light has higher priority than the brake light.
| Function schematics | |||
| Function schematic, actuate brake lights | Model 118, 177, 247, Model 167, Model 293 | PE82.10-P-2512-97A | |
| Subsystems | |||
| Actuate turn signal light, basic function | GF82.10-P-1023A | ||
| Control units | |||
| Trailer recognition control unit, basic function | Model all (CAR) with code 550 (Trailer coupling) |
GF31.19-P-9890A | |
| Electronic Stability Program control unit, basic function | GF42.45-P-9890A | ||
| Central controller unit, basic function | Model 118, 177, 247 | GF54.21-P-9895A | |
| Rear central controller unit basic function | Model 167 Model 293 |
GF54.21-P-9897A | |
| Components | |||
| Rear lamp unit, basic function | GF82.10-P-2004A | ||
| Additional brake lamp, basic function | GF82.10-P-2019A |