Engine Sound, Function - GF82.60-P-0019RDM
Model 172.4
with code B63 (Vehicle sound iESS)
Shown on model 172.4 except code 810 (Sound system)
Shown on model 172.4 with code 810 (Sound system)
Function requirements, engine sound, general
- Engine running.
The engine sound noises are always emitted through the speakers in the vehicle, irrespective of whether the audio equipment is switched on or off.
Engine sound, general
The engine sound control unit simulates engine noises in the vehicle interior via the speaker system in order to represent a more powerful engine.
The engine sound function is divided into the following subfunctions:
- Function sequence for engine sound (except code 810 (Sound system))
- Function sequence for engine sound (with code 810 (Sound system))
Function sequence for engine sound (except code 810 (Sound system))
The engine sound control unit receives the following signals:
- Control signals (e.g. engine speed, engine load or vehicle speed) via the drive train CAN from the ME-SFI [ME] control unit
- Analog signals over a direct line from the radio or COMAND controller unit
The engine sound control unit transmits the following signals:
- Synthesized sound signals over direct lines to:
- Left door speaker
- Right door speaker
- Left rear speaker
- Right rear speaker
- Left door tweeter
- Right door tweeter
Function sequence for engine sound (with code 810 (Sound system))
The engine sound control unit receives the following signals:
- Control signals (e.g. engine speed, engine load or vehicle speed) via the drive train CAN from the ME-SFI [ME] control unit
The engine sound control unit transmits the following signals:
- Synthesized sound signals over 4 symmetric lines to the sound system amplifier control unit
The sound system amplifier control unit forwards the synthesized sound signals to the following speakers:
- Left rear speaker
- Right rear speaker
- Center instrument panel speaker
- Left door tweeter
- Right door tweeter
- Center rear speaker
- Left door midrange speaker
- Right door midrange speaker
- Left door woofer
- Right door woofer
The sound system amplifier control unit software distributes the synthesized sound signals to the individual speakers.
| Electrical function schematic for speaker system | Model 172.4 as of model year 2017 with code B63 (Vehicle sound iESS) | PE82.62-P-2300-97TAB | |
| Overview of system components, telematics | GF82.85-P-9999RD |