Additional Functions After An Accident, Basic Function - GF91.60-P-1004A
Model all (CAR)
Overview
This service information contains information on:
- General
- Function requirements
- Function
General
After an accident, the Supplemental Restraint System (SRS) sends a crash signal via the CAN bus, among other things, causing other control units to start various functions. These measures as a whole are intended to further reduce the consequences of an accident.
Function requirements
- Terminal 15R on
Function requirements for measures for overheating of high-voltage or 48 V battery
- Entire CAN bus system not in idle mode (e.g. during active charging process of a stationary vehicle).
Function
Functions that may be triggered after a collision are listed in the following table:
| Subfunction | Aim |
|---|---|
| Switch on hazard warning system. | Warn other road users. |
| Switch on interior illumination. | Make orientation in the vehicle easier for vehicle occupants or persons rendering assistance. |
| Switch on ambient lighting (vehicles with ambient lighting). The ambient lighting lights up red at full brightness. | Improve orientation for persons in vehicle interior. |
| Open central locking. | Enable access to vehicle occupants, auxiliary material and the QR code on the fuel filler flap. |
| Open front side windows and, depending on the equipment installed, also open side windows in rear passenger compartment. | To extract any smoke particles generated by the restraint equipment. |
| Switch off engine (depending on type of accident and impact severity). | Reduce fire hazard. |
| Shutoff air conditioning system. | Prevent any ingress of noxious gases, reduce fire hazard. |
| Trigger pyrofuse (hybrid vehicles, electric vehicles or vehicles with 48 V technology). | Switch off high-voltage on-board electrical system and reduce voltage in system. |
| Switch off high-voltage components (hybrid vehicles, electric vehicles). | Switch off high-voltage on-board electrical system and reduce voltage in system. |
| Switch off 48 V components (vehicles with 48 V technology). | Switch off high-voltage on-board electrical system and reduce voltage in system. |
| Switch off stationary heater (vehicles with stationary heater). | Reduce fire hazard. |
| Automatic emergency call (vehicles with RAMSES or HERMES communications module) | Notify rescue services as quickly as possible. |
| Crash-active easy entry and exit feature (vehicles with seat adjustment with memory function). The electrically adjustable steering column is moved upwards. | Make it easier for driver to exit vehicle or for first aiders to rescue driver from vehicle. |
| Take measures for detected thermal event in high-voltage battery (hybric vehicles or electric vehicles) or 48 V battery (vehicles with 48 V technology). | Warn vehicle occupants of overheating or defects in high-voltage battery and make it easier to exit the vehicle. Break off charging process if charging. |
| Post-collision brake (depending on equipment): If an accident is detected the multi-collision brake can initiate automatic braking. The parking brake is applied automatically if the vehicle comes to a standstill. The driver car cancel this automatic brake application by braking more heavily than the automatic brake application or by pressing firmly on the accelerator pedal. | The severity of a consequential collision can be reduced or even avoided depending on the accident situation. |
| Emergency responders (depending on equipment): Behavior instructions are displayed in the central display in certain detected breakdown situations and after a severe accident. | Orientation aid and support in an exceptional situation. |
| Function schematics | |||
| Function schematic, trigger additional | Model 118, 167, 177, 243, 247, 293 | PE91.60-P-2502-97A | |
| Model 223, 232 | PE91.60-P-2502-97B | ||
| Model 213, 238, 257, 290 as of model year 2021 | PE91.60-P-2502-97C | ||
| Model 206, 297 | PE91.60-P-2502-97D | ||
| Further basic functions | |||
| Steering column adjustment, basic function | GF46.15-P-1000B | ||
| Fuel supply, basic function | GF47.00-P-1003A | ||
| Power window assembly, basic function | GF67.39-P-9900A | ||
| Central locking system, basic function | GF80.20-P-9900A | ||
| Actuate turn signal light, basic function | GF82.10-P-1023A | ||
| Interior lighting, basic function | GF82.20-P-9900A | ||
| Ambient lighting, basic function | Model all (CAR) with code 876 (ambient lighting) Model all (CAR) with code 877 (Ambient lighting) Model all (CAR) with code 878 (CONNECTED LIGHT ambient lighting) Model all (CAR) with code 891 (Premium ambiance illumination) Model all (CAR) with code 894 (Premium Plus ambiance illumination) |
GF82.20-P-9901A | |
| Emergency call system, basic function | Model all (CAR) with code 362 (HERMES communications module LTE) Model all (CAR) with code 383 (RAMSES ENTRY communication module) Model all (CAR) with code 384 (RAMSES HIGH communication module) |
GF82.95-P-9900A | |
| Climate control, basic function | GF83.00-P-9900A | ||
| Stationary heater, basic function | Model all (CAR) with code 228 (Additional warm water heating) | GF83.70-P-9900A | |
| Control units | |||
| Supplemental restraint system control unit, basic function | GF91.60-P-9890A | ||
| Component descriptions | |||
| Supplemental restraint system control unit, component description | Model 223 | GF91.60-P-4080A | |
| Model 243 | GF91.60-P-4080B | ||
| Model 206 | GF91.60-P-4080C | ||
| Model 297 | GF91.60-P-4080D |