Mercedes-Benz 171.456 2005 User manual

Installation Instructions
Date: November 2004
Order No.: PRELIMINARY DRAFT
Supersedes:
Group: 82
SUBJECT:MODEL 171.456/473
MODEL YEAR 2005
CELLULAR TELEPHONE INSTALLATION
We are interested in your comments and/or suggestions regarding these installation instructions—
please e-mail them to [email protected]
WARNING
Do not disconnect the negative battery cable. Extensive reprogramming requirements will
otherwise be necessary. Wiring harnesses will be electrically active. It is therefore necessary to
exercise extreme caution while executing these installation instructions. Failure to do so could
result in severe vehicle damage, personal injury, or death from electrical shock. Keep the ignition
and radio powered OFF through the final test.
MOST Notes
•Optical fibers damage easily; handle optical fibers with care to prevent cuts, nicks, abrasions, kinks,
and crushing.
•Minimum bend radius for optical fibers is 25 mm.
•Optical fiber “ring configurations” must form a closed loop to function (i.e. couple the input of a
component with the output of the preceding component).
•Identify MOST optical fibers cables by their orange or yellow, semi-rigid insulation.
•Electromagnetic interference (EMI) from bundled vehicle electrical harnesses does not affect optical
fibers.
This bulletin has been created and maintained in accordance with MBUSA-SLP S423QH001, Document and Data Control, and MBUSA-
SLP S424HH001, Control of Records.
© 2004 Mercedes-Benz USA, LLC. All rights reserved. Reproduction or translation in whole
Mercedes-Benz Canada, Inc. or in part is not permitted without authorization from the
Dealer Workshop Services publisher. Printed in U.S.A.
www.MBUSA.com 1-800-FOR-MERCedes
www.startekinfo.com

A. Preparing for the installation
1. Read these installation instructions in their
entirety before beginning.
2. Unpack and compare the installation kit
contents against the Parts Information list—
Section M.
3. Place the operating guides and customer
accessories in the glove box or appropriate
stowage compartment.
4. Remove the bottom, center trunk paneling,
and dismount the equipment carrier.
•Refer to WIS document AR68.30-P-
4810V, “Remove/install center trunk
paneling”
5. Lay down the equipment carrier on its
backside to expose the attached components
on its front (Figure 1).
Figure 1 P82.70-xxxx-71
Note: If the vehicle is Car Navigation processor equipped, carefully cut the wire tie securing the
equipment carrier to the Car Navigation compartment.
B. Locating and identifying the cables
1. On the right side of the equipment carrier,
carefully cut the wire ties bundling the
telephone cables to the wiring harness
running along the Tele Aid control module,
and then separate and lay out (Figure 2) the
cable connectors for identification.
Figure 2 P82.70-xxxx-71
PRELIMINARY DRAFT November 2004
2

2. On the right side of the equipment carrier,
disconnect the Tele Aid leads (A and B,
Figure 3) from one another and identify the:
•Tele Aid FAKRA female, white connector
(A, Figure 3)
•
•
•
•
Main antenna FAKRA male, white
connector (B, Figure 3)
3. On the right side of the equipment carrier,
identify the:
Telephone FAKRA female, black
connector (C, Figure 3)
Antenna switch 2-pin power supply
connector (D, Figure 3)
Linear compensator 4-pin power supply
connector (E, Figure 3)
Figure 3 P82.70-xxxx-71
4. On the right side of the equipment carrier,
identify the:
•
•
MHI power supply connector (A, Figure
4)
MHI microphone array connector (B,
Figure 4)
Figure 4 P82.70-xxxx-71
5. Along the bottom, center of the equipment
carrier, find the coupled antenna leads (A
and B, Figure 5) and carefully cut the wire tie
to release them.
6. Disconnect the antenna connectors (A and
B, Figure 5) from one another and identify
the:
•
•
Antenna FAKRA female, black connector
(A, Figure 5)
Antenna FAKRA male, black connector
(B, Figure 5)
Figure 5 P82.70-xxxx-71
PRELIMINARY DRAFT November 2004 3

7. On the right side of the equipment carrier,
find the:
•Tele Aid microphone connector (A,
Figure 6) and connected jumper (B,
Figure 6) with black and white looped
wires
8. Disconnect the jumper (B, Figure 6) with
black and white looped wires from the Tele
Aid microphone connector (A, Figure 6) and
discard the jumper.
Note: Voice Control System (VCS) is not an
option, therefore neatly organize and wire tie
the VCS power supply and microphone array
cables along wiring harness of the equipment
carrier.
Figure 6 P82.70-xxxx-71
C. Mounting the MHI control module and antenna switch to the bracket
1. Mount the MHI control module to the
threaded studs on the bracket front with four
8 mm nuts (Figure 7).
Note: The MHI control module will mount to
the bracket threaded studs only one way (i.e.
there is no way to mount the MHI control
module to the bracket incorrectly).
Figure 7 P82.70-xxxx-71
2. Mount the antenna switch to the pre-tapped
screw holes in the bracket front—right of the
mounted MHI control module—with two
Phillips head machine screws (Figure 8).
Figure 8 P82.70-xxxx-71
PRELIMINARY DRAFT November 2004
4

D. Mounting the linear compensator to the bracket
1. Mount the linear compensator to the pre-
tapped screw holes in the bracket front with
four Phillips head machine screws (Figure 9).
Note: Align the connector receptacles of the
linear compensator with the bracket end with
two mounting tabs (Figure 9).
Figure 9 P82.70-xxxx-71
E. Configuring the MOST ring
NOTICE!
Damaged optical fibers can cause
component malfunction.
Do not kink optical fibers, route them
over sharp edges, or bend them in radii
smaller than 25 mm.
1. Find the MOST adapter cable for the MHI
control module in the kit (Figure 10).
Figure 10 P82.70-xxxx-71
PRELIMINARY DRAFT November 2004 5

¾
2.
3.
4.
COMAND equipped vehicles without
satellite radio:
Find the MOST coupling (A, Figure 11) in the
optical fiber routed to the CAR NAVIGATION
processor wire tied to the bottom, right of the
equipment carrier.
Carefully cut the wire tie (B, Figure 11)
securing the MOST optical fibers to the
equipment carrier.
Disassemble the MOST coupling and
carefully remove the fiber end (Arrow, Figure
11).
Figure 11 P82.70-xxxx-71
5.
a.
b.
Install the MOST adapter cable:
Insert the fiber end of the MOST adapter
cable into the vacant chamber of the
disassembled coupling and reassemble
the coupling (A, Figure 12).
Insert the fiber end removed from the
coupling (Arrow, Figure 11) into the
vacant chamber of the MOST adapter
connector (B, Figure 12).
Figure 12 P82.70-xxxx-71
¾
6.
7.
a.
b.
Satellite radio equipped vehicles:
Find the MOST optical fiber routed to the
satellite radio, disassemble the MOST
coupling and remove the fiber end.
Install the MOST adapter cable:
Insert the fiber end (B, Figure 10) of the
MOST adapter cable into the vacant
chamber of the disassembled coupling
(A, Figure 13) and reassemble the
coupling.
Insert the fiber end removed from the
coupling into the vacant chamber of the
MOST adapter connector (B, Figure 13).
Figure 13 P82.70-xxxx-71
PRELIMINARY DRAFT November 2004
6

¾
8.
9.
10.
11.
a.
b.
AUDIO 20 equipped vehicles:
Find the MOST coupling (A, Figure 14) in the
looped optical fiber taped to the bottom, right
of the equipment carrier.
Remove the tape (B, Figure 14) to free up
the MOST optical fiber.
Disassemble the MOST coupling and
carefully remove the fiber end (Arrow, Figure
14).
Install the MOST adapter cable:
Insert the fiber end (B, Figure 10) of the
MOST adapter cable into the vacant
chamber (A, Figure 14) of the
disassembled MOST coupling and
reassemble the coupling.
Insert the fiber end removed of the
MOST coupling (Arrow, Figure 14) into
the vacant chamber of the MOST
adapter connector (C, Figure 10).
Figure 14 P82.70-xxxx-71
F. Installing the MHI control module/antenna switch bracket assembly and connecting the MHI
control module and antenna switch
1. Loosen the four E8 inverted Torx screws
securing the Tele Aid control module to the
right side of the equipment carrier.
2. Slide the screw slots in the bottom of the
bracket for the MHI control module and
antenna switch over the screws loosened in
step 1, slide the bracket assembly forward
until it hits the screws, and then tighten the
screws to secure the bracket assembly
(Figure 15).
Figure 15 P82.70-xxxx-71
PRELIMINARY DRAFT November 2004 7

3. Connect the MOST adapter connector to
the MHI control module (A, Figure 16).
4. Connect the MHI power supply connector to
the MHI control module (B, Figure 16).
5. Connect the MHI microphone array
connector (C, Figure 16) to the Tele Aid
microphone connector (D, Figure 16).
6. Organize and wire tie loose cabling.
Figure 16 P82.70-xxxx-71
7. Connect the telephone FAKRA female,
black connector to the antenna switch jack
labeled “BOOSTER” (A, Figure 17).
8. Connect the Tele Aid FAKRA female, white
connector to the antenna switch jack
labeled “LCT” (B, Figure 17).
9. Connect the main antenna FAKRA male,
white connector to the antenna switch jack
labeled “ANTENNA” (C, Figure 17).
10. Connect the 2-pin power supply connector
to the antenna switch (D, Figure 17).
Figure 17 P82.70-xxxx-71
PRELIMINARY DRAFT November 2004
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G. Installing the linear compensator bracket assembly and connecting the linear compensator
1. Mount the linear compensator/bracket
assembly to the three threaded studs
(Figure 18) on the equipment carrier, left of
the mounted MHI/antenna switch bracket
assembly with three 8 mm nuts.
Figure 18 P82.70-xxxx-71
2. Connect the FAKRA antenna female
connector to the linear compensator jack
labeled “ANTENNA” (A, Figure 19).
3. Connect the FAKRA antenna male
connector to the linear compensator jack
labeled “PORTABLE” (B, Figure 19).
4. Connect the 4-pin power supply connector
to the linear compensator (C, Figure 19).
Figure 19 P82.70-xxxx-71
5. Organize and wire tie loose cabling (Figure
20) and remount the equipment carrier.
•Refer to WIS document AR68.30-P-
4810V, “Remove/install center trunk
paneling”
Figure 20 P82.70-xxxx-71
PRELIMINARY DRAFT November 2004 9

H. Installing the cradle contact plate and telephone cradle
1. Open the lower compartment of the center
console and remove the four T8 Torx
screws (Figure 21) from the upper
compartment underside to release the false
floor.
Figure 21 P82.70-xxxx-71
2. At the bottom of the upper compartment of
the center console, open the housing cover
(Figure 22) for the contact plate female
FAKRA and power supply connectors.
Figure 22 P82.70-xxxx-71
3. Open the upper compartment of the center
console and lift out the false floor (Figure
23).
4. Remove the knockout (Arrows, Figure 23)
from the false floor by pressing it out from
underneath.
NOTICE!
Excessive force will crack or break
plastic.
Applying excessive force while removing
the knockout can crack or break the
plastic mounting tray.
Do not apply excessive force when
removing the knockout from the
mounting tray for the contact plate.
Figure 23 P82.70-xxxx-71
PRELIMINARY DRAFT November 2004
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