P82.62-4781-79
A26/17 | Head unit | H4/80 | Left rear door/side wall trim mid-range speaker (except model 205.4) | |
A90/4 | Tuner unit (with code 536 (SIRIUS satellite radio), with code 537 (Digital radio (DAB)) or with code 865 (TV tuner)) | H4/81 | Right rear door/side wall trim mid-range speaker (except model 205.4) | |
H4/27 | Center instrument panel speaker (with code 810 (Sound system) or code 348 (Emergency call/assist system), code 350 (Ecall Europe emergency call system) or code 360 (HERMES UMTS) or code 362 (HERMES LTE)) | H4/102 | Left rear side wall trim mid-range speaker (model 205.4) | |
H4/42 | Left footwell woofer (with code 810 (Sound system) or right-hand drive vehicles except code 810 (Sound system)) | H4/103 | Right rear side wall trim mid-range speaker (model 205.4) | |
H4/43 | Right footwell woofer (with code 810 (Sound system) or left-hand drive vehicles except code 810 (Sound system)) | H4/104 | Left rear sidewall lining tweeter (model 205.4 with code 810 (Sound system)) | |
H4/62 | Left rear surround sound system midrange speaker (with CODE 810 (Sound system)) | H4/105 | Right rear sidewall lining tweeter (type 205.4 with code 810 (Sound system)) | |
H4/63 | Right rear surround sound system midrange speaker (with CODE 810 (Sound system)) | N40/1 | Engine sound control unit (with code B63 (Sporty engine sound)) | |
H4/68 | Left front door tweeter (with CODE 810 (Sound system)) | N40/3 | Sound system amplifier control unit (with code 810 (Sound system)) | |
H4/69 | Right front door tweeter (with CODE 810 (Sound system)) | MOST | Media Oriented System Transport | |
H4/70 | Left rear door/side panel tweeter (except model 205.4, with code 810 (Sound system)) | A | Code 810 (Sound system) | |
H4/71 | Right rear door/side panel tweeter (except model 205.4, with code 810 (Sound system)) | B | Code B63(Sporty engine sound) | |
H4/72 | Left front door midrange speaker | C | Except code 810 (Sound system) and except code B63 (Sporty engine sound) | |
H4/73 | Right front door midrange speaker |
Function requirements, general
Circuit 30g ON
Transport mode not active
Speaker output, general
A distinction is made between the following procedures:
Speaker output in vehicles with CODE 810 (Sound system)
Speaker output in vehicles except CODE 810 (Sound system)
Speaker output in vehicles with code B63 (Sporty engine sound) and except code 810 (Sound system)
Speaker actuation in the event of voice output
This document does not describe speaker actuation with telematics services with a voice connection (e. g. emergency call).
Speaker output in vehicles with CODE 810 (Sound system)
The audio signals are routed from the head unit or the tuner unit (with code 536 (SIRIUS satellite radio), code 537 (Digital radio (DAB)) or code 865 (TV tuner)) via Media Oriented System Transport (MOST) to the sound system amplifier control unit, where they undergo final amplification and are output by means of direct lines via the following speakers:
Center instrument panel speaker
Left footwell woofer
Right footwell woofer
Left rear surround sound system midrange speaker
Right rear surround sound system midrange speaker
Left front door tweeter
Right front door tweeter
Left rear door/side wall trim tweeter (except model 205.4)
Right rear door/side wall trim tweeter (except model 205.4)
Left front door midrange speaker
Right front door midrange speaker
Left rear door/side wall trim mid-range speaker (except model 205.4)
Right rear door/side wall trim mid-range speaker (except model 205.4)
Left rear side wall trim mid-range speaker (model 205.4)
Right rear side wall trim mid-range speaker (model 205.4)
Left rear side wall trim tweeter (model 205.4)
Right rear side wall trim tweeter (model 205.4)
During actuation of the speaker system, the volume is adapted to the noise level in the vehicle interior. To do so, the sound system amplifier control unit receives a vehicle speed signal via the head unit.
Model 205
up to model year 2019
with code B63 (Sporty engine sound)
Model 253 (except 253.99)
up to model year 2020
with code B63 (Sporty engine sound)
The sound system amplifier control unit receives synthesized sound signals from the engine sound control unit.
Model 205
up to model year 2019
with code 348 (Emergency call/assistant system)
Model 205
up to model year 2019
with code 350 (Ecall emergency call system, Europe)
Model 253 (except 253.99)
up to model year 2020
with code 348 (Emergency call/assistant system)
Model 253 (except 253.99)
up to model year 2020
with code 350 (Ecall emergency call system, Europe)
The center instrument panel speaker is used for voice output with telematics services with a voice connection (e. g. emergency call) and is actuated by the emergency call system control unit (N123/4) or the telematics services communications module (N112/1) depending on the equipment.
Model 205
up to model year 2019
with code 360 (HERMES UMTS)
Model 205
up to model year 2019
with code 362 (HERMES LTE)
Model 253 (except 253.99)
up to model year 2020
with code 360 (HERMES UMTS)
Model 253 (except 253.99)
up to model year 2020
with code 362 (HERMES LTE)
For telematics services with a voice connection (e. g. emergency call), the center instrument panel speaker is used for voice output and actuated via direct lines by the HERMES control unit (N112/9).
Speaker output in vehicles except CODE 810 (Sound system)
The audio signals are output by the head unit via direct lines over the following speakers:
Left footwell woofer (right-hand drive vehicles)
Right footwell woofer (left-hand drive vehicles)
Left front door midrange speaker
Right front door midrange speaker
Left rear door/side wall trim mid-range speaker (except model 205.4)
Right rear door/side wall trim mid-range speaker (except model 205.4)
Left rear side wall trim mid-range speaker (model 205.4)
Right rear side wall trim mid-range speaker (model 205.4)
Model 205
up to model year 2019
with code 348 (Emergency call/assistant system)
Model 205
up to model year 2019
with code 350 (Ecall emergency call system, Europe)
Model 253 (except 253.99)
up to model year 2020
with code 348 (Emergency call/assistant system)
Model 253 (except 253.99)
up to model year 2020
with code 350 (Ecall emergency call system, Europe)
The center instrument panel speaker is used for voice output with telematics services with a voice connection (e. g. emergency call) and is actuated by the emergency call system control unit or the telematics services communications module depending on the equipment.
Model 205
up to model year 2019
with code 360 (HERMES UMTS)
Model 205
up to model year 2019
with code 362 (HERMES LTE)
Model 253 (except 253.99)
up to model year 2020
with code 360 (HERMES UMTS)
Model 253 (except 253.99)
up to model year 2020
with code 362 (HERMES LTE)
With telematics services with a voice connection (e. g. emergency call), the center instrument panel speaker is used for voice output and actuated via direct lines by the HERMES control unit.
Speaker output in vehicles with code B63 (Sporty engine sound) and except code 810 (Sound system)
The head unit transmits the processed audio signals via direct lines to the engine sound control unit.
The audio signals are output by the engine sound control unit by means of direct lines via the following speakers:
Left footwell woofer (right-hand drive vehicles)
Right footwell woofer (left-hand drive vehicles)
Left front door midrange speaker
Right front door midrange speaker
Left rear door/side wall trim mid-range speaker (except model 205.4)
Right rear door/side wall trim mid-range speaker (except model 205.4)
Left rear side wall trim mid-range speaker (model 205.4)
Right rear side wall trim mid-range speaker (model 205.4)
Speaker actuation in the event of voice output
The following speakers are actuated for voice output (e. g. as part of the telephony, navigation or voice control system):
Left front door tweeter (with CODE 810 (Sound system))
Right front door tweeter (with CODE 810 (Sound system))
Left front door midrange speaker
Right front door midrange speaker
Center instrument panel speaker (with CODE 810 (Sound system))