AN82.70-P-0008-01ESC Retrofit Comfort Telephony Wiring Harness

AN82.70-P-0008-01ESC Retrofit Comfort Telephony Wiring Harness
- MODEL 212.2## (except 212.277) 1# as of 1.6.10 as of Model Year 2011 in the vehicle



Connection scheme






1 Comfort telephony wiring harness
5 White 4-pin connector
8 Violet antenna line connector
A2 Radio (with code (523) MB Audio 20 radio or code (510) Audio 20 with CD changer)
A2/56 Radio with auto pilot system (with code (525) MB Audio 50 APS radio or code (511) Audio 50 APS with DVD changer)
A28/11 Multifunction antenna
A34/7 Bluetooth module
A40/3 COMAND controller unit (with code (527) COMAND APS with single DVD drive (with navigation) or code (512) COMAND APS with DVD changer)
N10/2 Rear SAM control unit with fuse and relay module
W18 Left front seat crossmember ground point
br Brown line
rt/gn Red/green line
vi Violet line

Routing diagram






1 Comfort telephony wiring harness
1.1 Multifunction antenna branch-off line
5 White 4-pin connector
6 White 4-pin plug
7 Violet antenna line plug
8 Violet antenna line connector
A2 Radio (with code (523) MB Audio 20 radio or code (510) Audio 20 with CD changer)
A2/56 Radio with auto pilot system (with code (525) MB Audio 50 APS radio or code (511) Audio 50 APS with DVD changer)
A28/11 Multifunction antenna
A34/7 Bluetooth module
A40/3 COMAND controller unit (with code (527) COMAND APS with single DVD drive (with navigation) or code (512) COMAND APS with DVD changer)
N10/2 Rear SAM control unit with fuse and relay module
W18 Left front seat crossmember ground point
br Brown line
rt/gn Red/green line
vi Violet line






1 Route violet line (vi) of comfort telephony wiring harness, as shown, to the left next to selector lever module in the slot of the removed audio component.
2 Release lock (11) on black 44-pin connector (9) and insert violet line (vi) into contact cavity "13" on the black 44- pin connector (9).
3 Fasten lock (11) on black 44-pin connector (9).
4 Fix violet line (vi) of comfort telephony wiring harness in place with felt tape (arrow A) at center console (2).
5 Fix violet line (vi) of comfort telephony wiring harness in place on vehicle wiring harness using cable tie (arrow B).






6 Open cover (12) of cable duct (13).
7 Route comfort telephony wiring harness (1) from center console (2) to cable duct (13) of left frame floor assembly, as shown.
Ensure sufficient clearance of comfort telephony wiring harness (1) below rear floor covering (14).

8 Route brown line (br) of comfort telephony wiring harness (1), as shown, forward into the cable duct (13).
9 Route multifunction antenna branch-off line (1.1) and red/green line (rt/gn) of comfort telephony wiring harness (1), as shown, to the rear into the cable duct (13).
10 Use pull-through device to route multifunction antenna branchoff line (1.1) and red/green line (rt/gn) through the cable duct (16) to the rear.






11 Install brown line (br) of comfort telephony wiring harness at left front seat crossmember ground point (W18).
12 Form loops with excess length of brown line (br) next to left front seat crossmember ground point (W18) and fix in place with felt tape (17).
13 Close cover (12) of cable duct.






14 Remove ISOFIX mount cover (20) from brackets (arrows C).






15 Open covering of cable duct (23) in rear and route multifunction antenna branchoff line (1.1) and red/green line (rt/gn) into it.
16 Close cover of cable duct (23) in rear.
17 Wrap felt tape around red/green line (rt/ gn) behind the left rear cable duct (23) for a length of 2000 mm.
18 Route red/green line (rt/gn), as shown, from left rear passenger compartment cable duct (23) along vehicle wiring harness to rear seat backrest.
19 Fasten red/green line (rt/gn) using cable tie (15) to vehicle wiring harness.
20 Route multifunction antenna branch-off line (1.1) along vehicle wiring harness (24), as shown, and fix in place using cable ties (15).






21 Fold rear seat backrest (18) towards the front by approx. 45°.
22 Route red/green line (rt/gn), as shown, along vehicle wiring harness to cable duct (19).
23 Route red/green line (rt/gn) along cable duct (19) in trunk to rear SAM control unit with fuse and relay module (N10/2).
24 Fasten red/green line (rt/gn) using cable ties (arrows D) to vehicle wiring harness.
25 Position rear seat backrest (18) vertically again.






26 Unclip green 7-pin fuse holder (27) from brackets (arrows F) from rear SAM control unit with fuse and relay module (N10/2).
Only for vehicles in which the green 7-pin fuse carrier (27) is already installed.






27 Release fuses (arrows G and H) on green 7-pin fuse carrier (27).
On vehicles in which the green 7-pin fuse carrier (27) is already installed, this holder is used. On vehicles in which the 7-pin green fuse carrier (27) is not yet installed, then the 7- pin green fuse carrier (27) included in the package is used.

28 Mount red/green line (rt/gn) into contact cavity "1" on green 7-pin fuse carrier (27).
The numbering of the slots is on the rear of the green 7-pin fuse carrier (27).

29 Lock fuses (arrows G and H) on green 7-pin fuse carrier (27).






30 Clip green 7-pin fuse holder (27) into green slot on rear SAM control unit with fuse and relay module (N10/2).
31 Insert electrical fuse 81 (N10/2f81) with a rating of 7.5 A into contact cavity "1" on the green 7-pin fuse carrier (27).






32 Route multifunction antenna branch-off line (1.1) through body opening (arrow E) behind the mounting console (25).
33 Route multifunction antenna branch-off line (1.1) with black antenna line connector along vehicle wiring harness, as shown.
33 Fasten multifunction antenna branch-off line (1.1) using cable ties to vehicle wiring harness.
34 Fasten multifunction antenna branch-off line (1.1) into place on body using felt tape.






35 Connect black 1-pin connector of antenna line (1.1) on black slot of multifunction antenna (A28/11).