Satellite radio (SDAR), function - GF82.60-P-0006LEU

MODEL 216, 221 up to 31.5.09 with CODE (536) SIRIUS satellite radio as of model year 2009/YoM 08

Function requirements, general

C. 30g ON or c. 15R ON
COMAND controller unit (A40/3) is switched on
Cockpit Management and Data System (COMAND) authorized and working correctly
The SDAR antenna (A2/82) (model 216) or the telephone and GPS roof antenna (A2/49) (model 221) operates correctly

The SDAR antenna on model 221 is integrated into the telephone and GPS roof antenna.

Satellite digital audio radio (satellite radio) (SDAR), general

The SDAR control unit (N87/5) enables "Sirius satellite radio" provider channels to be received.

The satellite digital audio radio (satellite radio) (SDAR) is controlled using the COMAND controller unit. The information or displays required for control are shown on the COMAND display (A40/8).

The SDAR can be operated using the following components:

Front central operating unit (A40/9)
Left multifunction steering wheel button group (S110)
Right multifunction steering wheel button group (S111)

The control signals from the front central operating unit are relayed via the telematics CAN (CAN A) to the COMAND controller unit and transmitted by the latter via Media Oriented System Transport (MOST) to the SDAR control unit.

The control signals of the multifunction steering wheel button groups are forwarded to the audio equipment over the following route:

Steering LIN (LIN E1)
Steering column tube module (N80)
Chassis CAN (CAN E)
Central gateway control unit (N93)
Central CAN (CAN F)
COMAND controller unit
MOST
SDAR control unit

SDAR function sequence

To achieve multi-channel reception, the Sirius satellite radio signal is transmitted three times (from two satellites and one terrestrial station). The SDAR antenna or the telephone and GPS roof antenna receives all three channels (satellite 1, satellite 2, terrestrial station). The SDAR antenna or the telephone and GPS roof antenna then forwards the signals to the SDAR control unit via a coaxial cable. The SDAR control unit receives the digital radio signals, decodes them and transmits them over MOST to the audio tuner control unit (N93/1), which amplifies them and outputs them over the vehicle's speaker system.

The speaker system in model 216 comprises the following components:

Left door rear speaker (H4/3)
Right door rear speaker (H4/4)
Bass module speaker (H4/17)
Center cockpit speaker (centerfill) (H4/27)
Left rear surround speaker (H4/54)
Right rear surround speaker (H4/57)
Left door Sound tweeter (H4/68)
Right door Sound tweeter (H4/69)
Left door Sound woofer and midrange speaker group (H4/72)
Right door Sound woofer and midrange speaker group (H4/73)

The speaker system in model 221 comprises the following components:

Left rear door speaker group (H4/3)
Right rear door speaker group (H4/4)
Bass module speaker
Center cockpit speaker (centerfill)
Left rear surround speaker
Right rear surround speaker
Left front door Sound tweeter (H4/68)
Right front door Sound tweeter (H4/69)
Left front door Sound woofer and midrange speaker group (H4/72)
Right front door Sound woofer and midrange speaker group (H4/73)

Electrical function schematic for SDAR function	Model 216	PE82.60-P-2060-97CAA
Electrical function schematic for SDAR function	Model 221	PE82.60-P-2060-97SAA
COMAND controller unit, component description	A40/3	GF82.85-P-3136LEU
COMAND display, component description	A40/8 without code (867) SPLITVIEW	GF54.30-P-6110LE
Front central operating unit, component description	A40/9	GF54.21-P-4500LE
Component description for steering column tube module	N80	GF54.21-P-6050LE
SDAR control unit, component description	N87/5	GF82.60-P-3200LEU
Central gateway control unit, component description	N93	GF54.21-P-4170LE
Audio tuner control unit, component description	N93/1	GF82.62-P-3132LES