Mercedes-Benz ML320. Manual — part 258

Fig. 99: Identifying Female Amplifier Connector, Cable Tie And Harness Clip

6. Cut slot in insulation to access sound system amplifier (A2/13) electrical connectors.

7. Disconnect male connector A/B (9) on sound system amplifier and plug into female amplifier connector

(6) of jumper harness

8. Plug male connector A/B (8) of jumper harness into corresponding connection on sound system amplifier

9. Refit insulation

Fig. 100: Identifying Sound System Amplifier, Plug Male Connector A/B And Integrated Harness
Clip

HUMMING SOUND FROM SPEAKERS WITH RADIO SET ON LOW VOLUME - AF82.60-P-1010AG

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

MODEL 163 with CODE (259) Radio Premium with Bose sound system

Parts ordering notes

PROGRAM CHANGE ALTHOUGH RDS [RADIO DATA SYSTEM] AND REGIONALIZATION ARE SWITCHED ON -
AF82.60-P-1062A

MODEL 129, 140, 163, 168, 170, 171, 202, 203, 208, 209, 210, 211, 215, 220, 230, 463 with RDS radio

Damage code

Cause

Remedy

Speaker wires picking up
interference noise from
surrounding wiring

1 Remove radio

AR82.60-P-7502EA

2 Remove upper center
console storage
compartment

3 Remove lower dash
panel below steering
column

AR68.10-P-1500GH

4 Install sound system
jumper harness

AF82.60-P-1010-01AG

5 Reinstall in opposite
order

Part no.

Designation

Quantity

163 540 98 05

Jumper harness for Bose sound
system

1

Damage code

Cause

Remedy

Station change without
obvious cause.

Some radio stations

which had originally
transmitted regional
identification have been
transmitting the RDS
signals without regional
identification for some
time.
Without regional
identification it is no
longer possible to
separate stations with the
same station name which
transmit different
programs.

1 Point out the facts to
the customer.

Do not replace any

devices, state of the art
engineering.

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

INTERMITTENT INTERRUPTIONS OF RADIO RECEPTION IN RDS MODE - AF82.60-P-1101A

MODELS 163,168,170, 208, 210 with CODE (756a) MB radio Audio 10 RDS with CD compartment

PROBLEM WITH RADIO RECEPTION AFTER INSTALLING SUN SHIELD FILM - AF82.60-P-1105A

MODEL 163, 202, 203, 208, 209, 210, 211, 215, 220

Modification notes

Damage code

Cause

Remedy

Under unfavorable
reception conditions in
FM-RDS mode, the radio
may frequently switch to
alternative frequencies of
one and the same radio
station.

Due to the equipment

and antenna design there
is no remedy available.

During switchover,
reception may be
interrupted for a brief
period.

Do not replace any radios
subject to this complaint
only!

11.2.00

Supersedes STIP 82.60-
030 dated 10.2.00

Damage code

Cause

Remedy

Complaint is caused by
retrofitting metallized
window foils.

When installing

window foils, cut foil
outside of vehicle to
avoid damaging the
antennas and heating
wires

Metallized foil:



AM reception
reduced approx. 70
%, among other
problems search
stop no longer
possible



FM reception
reduced approx. 10
% .



TV reception
reduced approx. 10

Do not use metallized

foil.
Advise customer of
negative effects to
reception

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me

AM RADIO RECEPTION DIFFICULTIES - AF82.60-P-6005A

MODEL 163.136 /154 /172 ## up to 146760

Revisions

%.



Range of radio
remote control for
central locking
reduced by up 50 %

Non-metallized foil:



Only slight
reduction of
functions described
above.

01.09.99

Supersedes STI no.
82.60-024 dated 01.09.99

Cause

Remedy

Loss of noise filtering
function of the antenna
splitter (A2/5) and the
AM/FM amplifier
(A2/18) due to poor
ground connection.

1 Remove AM/FM
amplifier

AR82.62-P-8347GH

AM radio reception is

being adversely affected
by background noise and
electrical interference,
resulting in the station
signal being overridden.

2 Remove antenna
splitter

AR82.70-P-8953GH

The painted surface of the
vehicle's body, combined
with the protective
coating on the mounting
screws, may not provide
an adequate ground.

3 Remove paint/E-
coating from vehicle
body at mounting points
of antenna splitter and
AM/FM amplifier

4 Remove protective
coating on shoulder of
antenna splitter and
amplifier mounting
screws

2001 Mercedes-Benz ML320

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

me