1997 MERCEDES-BENZ ML320 sport mode

248 Tires, Wheels
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Using the wrench, tighten the five bolts evenly,
following the sequence illustrated, until all bolts are
tight. Observe a tightening torque of 110 ft.lb. (150 Nm).
Ensure proper tire pressure.Notes:
The removed road wheel cannot be stored in the
space-saver wheel carrier or inside the storage
compartment in the rear cargo area (ML 55 AMG), but
should be transported in the rear cargo compartment
wrapped in a protective cover supplied with the vehicle.
The protective cover is located in the rear cargo
compartment behind the cover in the right side trim
panel.
Model ML 55 AMG:
Store air pump in its proper location. Close and latch the
spare wheel cover, see page 239.
1
2
3
4
5
Wa r n i n g !
Always replace wheel bolts that are damaged or
rusted.Never apply oil or grease to wheel bolts.Damaged wheel hub threads should be repaired
immediately.Incorrect mounting bolts or improperly tightened
mounting bolts can cause the wheel to come off.
This could cause an accident. Be sure to use the
correct mounting bolts.

248
Tires, Wheels
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints
Car care Index
Using the wrench, tighten the five bolts evenly,
following the sequence illustrated, until all bolts are
tight. Observe a tightening torque of 110 ft.lb. (150 Nm).
Ensure proper tire pressure. Notes:
The removed road wheel cannot be stored in the
space-saver wheel carrier or inside the storage
compartment in the rear cargo area (ML 55 AMG), but
should be transported in the rear cargo compartment
wrapped in a protective cover supplied with the vehicle.
The protective cover is located in the rear cargo
compartment behind the cover in the right side trim
panel.
Model ML 55 AMG:
Store air pump in its proper location. Close and latch the
spare wheel cover, see page 239.
1
2
3
4
5
Wa r n i n g !
Always replace wheel bolts that are damaged or
rusted.Never apply oil or grease to wheel bolts.Damaged wheel hub threads should be repaired
immediately.Incorrect mounting bolts or improperly tightened
mounting bolts can cause the wheel to come off.
This could cause an accident. Be sure to use the
correct mounting bolts.

emergency call systemwith CODE (348) TELE
AID emergency call system
Notes regarding the taxi
emergency call systemMODEL 140,202,210,220...AH82.95-P-0002-01A
Adjusting headlamps when
driving abroadMODEL 164, 169, 171,
203, 209, 211, 215, 216,
219, 220, 221, 230, 245,
251 ...AH82.10-P-0001-01A
Adjust headlamps when
driving abroadMODEL 454.0AH82.10-P-0001-
01FF
Adjusting headlamps when
driving abroadMODEL 451.3/4AH82.10-P-0001-
01MCC
Retrofitting xenon headlampsMODEL 129, 140, 202,
210, 220 ...AH82.10-P-1003-01A
Retrofitting xenon headlampsMODEL 210.###1# as of
1.7.99AH82.10-P-1003-01F
Notes on retrofitting xenon
headlampsMODEL 203AH82.10-P-1003-01P
Notes on installing taxi/rental
vehicle equipmentMODEL 245 ...AH82.25-P-0001-
01BK
Notes on installing rental
vehicle equipmentMODEL 221.0##/1##1#
except CODE (498) Japan
version except CODE (494)
USA versionAH82.25-P-0001-
02SX
Notes on mirror taximeterMODEL 202, 203.0, 210,
220 with CODE (450) Taxi
versionAH82.25-P-1000-02P
Notes on wiper arm
adjustmentMODEL 171.4, 203, 209,
211, 215, 220, 230, 240AH82.30-P-0001-01A
Notes on wiper arm
adjustmentMODEL 129,202,208,210AH82.30-P-0001-01B
Notes on wiper arm
adjustmentMODEL 219.3AH82.30-P-0001-
01TX
Notes on COMAND
software statusMODEL 215, 220 with
CODE (352a) COMAND
operating and display
system bei APS der 3.
GerategenerationAH82.60-P-0001-01A
Notes on radio installationMODEL 203 ...AH82.60-P-0001-03P
Notes on removal/installation
of the fiber optical cable for
the Media Oriented System
Transport (MOST)MODEL 211.0/2AH82.60-P-0001-06T
Notes on auto-pilot systemMODEL 170AH82.61-P-0001-01A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 2 © 2006 Mitchell Repair Information Company, LLC.

NOTES ON NAVIGATION SYSTEM TRAFFICSTAR - AH82.61-P-0001-03A
Models 129, 140, 163, 168, 170, 202, 208, 210

Customer information on GPS antenna installation location
On all sedans and coupes, the GPS antenna can be mounted on the rear shelf as an alternative to the instrument
panel.
TrafficStar customer information
The TrafficStar navigation system is available in two versions from the Becker Company:
1. Mat black cover
2. Precious wood cover, burr walnut (Avant-
garde)
conversion for Tele Aid
emergency call system
Notes regarding the Tele-Aid
emergency call systemMODEL 463 ...AH82.95-P-0001-
01GA
Notes regarding the Tele-Aid
emergency call systemMODEL 199AH82.95-P-0001-
01SLR
Notes on Tele Aid
emergency call system
control module changeMODEL 140 with CODE
(348) TELE AID
emergency call systemAH82.95-P-0001-02A
Cleaning plastic cover plates
of lampsMODEL 168, 169, 171,
199, 203, 204, 208, 209,
210, 211, 215, 216, 219,
220, 221, 230, 240, 245.2AH82.10-P-1002-01A
Cleaning plastic cover plates
of lampsMODEL 454.0AH82.10-P-1002-
01FF
Notes on installation of
wiring harnesses in roof areaMODEL 203.0AH82.25-P-1000-01P
Notes on avoiding damage to
fiber optic cables during
repair workMODEL 164, 169, 211,
216, 221, 245, 251, 454 ...AH82.60-P-0001-
05AK
Notes on avoiding damage to
fiber optic cables during
repair workMODEL 219.3 with Media
Oriented System Transport
(MOST)AH82.60-P-0001-
05TX
Notes on fiber optic cableMODEL 129, 163, 168,
170, 202, 203, 208, 209,
210, 215, 220, 230, 414,
463 ...AH82.70-P-0001-02A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:04 PMPage 4 © 2006 Mitchell Repair Information Company, LLC.

by the navigation processor Integrated Into the radio and navigation module (A2/56) .
During the switch-on phase (software is loaded), only basic map matching is available.
When the ignition is switched off all important location finding parameters are stored for the duration of the
shut-off delay (approx. 60 min) .
The permanent location finding feature uses three procedures which supplement each other ensuring very
precise and reliable location finding:
Basic location finding (dead reckoning)
Map-supported location finding (map matching)
GPS location finding
Manual entry of vehicle location
It is possible to enter the location manually on the operating and display module. This can be useful in the
following cases:
Following vehicle transport
(e.g. ferry or train) or
when GPS reception is not present when trip is started
LOADING LANGUAGE, FUNCTION - GF82.61-P-3003B
MODEL 163, 168, 170, 203.0 /2 /7, 208, 209.3 /4, 210 with CODE (353) Audio 30 APS
Function
The data for navigation voice output is stored originally on the navigation DVD. They are transmitted with the
help of the DVD drive of the radio (A2) into the memory of the navigation processor and are then available
anytime for navigation.
The language is reloaded in the following cases:
Basic location finding,
function GF82.61-P-3006GI
Global positioning system
location finding, function GF82.61-P-3007GI
Map-supported location
finding, function GF82.61-P-3008GI
Radio and navigation
module, location/purpose/
design/function GF82.61-P-4109GI

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 78 © 2006 Mitchell Repair Information Company, LLC.

Left rear rpm sensor (L6/3) (model 168)
Wheel speed sensor, left front (L6/1)
Right front rpm sensor (L6/2) (model 208, 210)
Left front rpm sensor (L6/1) and right front rpm sensor (L6/2) (models 203, 209)
The evaluation of the wheel speed signals reveals the mileage covered.
The wheel speed signals of the not driven wheels are evaluated, since their slip between the roadway and tire
is lower, which results in a more accurate result when calculating the mileage.
Calculation of the vehicle orientation
The navigation computer calculates the direction in which the vehicle is traveling (compass direction) from the
data from the gyrosensor and the sequence of locations calculated with the aid of the global positioning system
(GPS). The difference in the calculated mileage and the mileage actually covered between 2 turn-off points is
used to automatically recalibrate the tire circumference (necessary due to tire wear).
Calculation of the direction of motion
The navigation processor recognizes the direction of motion (forward or reverse) from the reverse signal.
Calibration of tire circumference
As a matter of principle, the navigation system recalibrates itself while driving as described. However, this may
require driving a longer distance. After changing tires, manual recalibration should therefore be accomplished.
To do this, it is necessary to enter the tire size (e.g.:195/050/015)and possibly the following information:
new tires (tread depth > approx. 5 mm)
used tires (tread depth < approx. 5 mm)
The entry can be done two different ways:
With aid of STAR DIAGNOSIS.
By calling the "Navigation --> TIRE" menu at the radio (A2)
Errors due to vehicle movement with switched off ignition lead to an inaccurate basic location finding.
Rolling backwards without the reverse gear engaged is evaluated as forwards motion, and may lead to an error
in the location finding. Rolling with the ignition switched off or vehicle transportation also falsify map
matching.
The errors are, however, corrected automatically after a short time by the navigation processor after
receiving GPS data.
A special calibration drive by driving around a defined test path is not ever required.

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 80 © 2006 Mitchell Repair Information Company, LLC.

The navigation processor recognizes the direction of motion (forward or reverse) from the reverse signal.
Direction in which vehicle is pointing
From the data of the gyrosensor and the sequence of the locations calculated with GPS the navigation
processor the calculates the direction in which the vehicle is pointing (compass direction).
The difference between calculated and actual distance traveled between two turning points is used for automatic
recalibration of the tire circumference (required due to tire wear).
Location finding errors during basic location finding
Rolling backwards without the reverse gear engaged is evaluated as forward motion, and may lead to an error in
the location finding.
Rolling with the ignition switched off or vehicle transportation also falsify map matching.
In both cases the deviation is automatically corrected by the navigation processor after receiving GPS data .
Calibration
Wheel calibration is not required following tire change.
GLOBAL POSITIONING SYSTEM LOCATION FINDING, FUNCTION - GF82.61-P-3007C
MODEL 163, 168, 170, 203.0 /2 /7, 208, 209.3 /4, 210 with CODE (353) Audio 30 APS
Basic representation of the GPS location finding shown on model 210
Global positioning system
location finding, function GF82.61-P-3007GI
Map-supported location
finding, function GF82.61-P-3008GI
Guidance, function GF82.61-P-3012GI
Radio and navigation
module, location/purpose/
design/function GF82.61-P-4109GI

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 82 © 2006 Mitchell Repair Information Company, LLC.

Fig. 48: Identifying Global Positioning System Location Finding
General information
The global positioning system (GPS) is a location finding system established by the US Defense Department
and is satellite supported. It is toll-free and is available throughout the world. A lot of satellites are located on
different orbits. The GPS satellites constantly transmit time and position data. If data from at least 3 satellites is
received it is possible to calculate the position of the receiver.
GPS position finding is irreplaceable for journeys outside the digitized map area and after vehicle transport (e.g.
train or ferry journeys and towing). A new GPS location finding (after interruption of satellite reception) can
last several minutes (up to 20 minutes when first commissioning the equipment).
Function
The navigation processor that is integrated in the radio (A2) calculates the location of the vehicle and the
accuracy of positioning from the satellite signals received and amplified.
The following components can receive satellite data:
Telephone and GPS roof antenna (A2/49) (model 163)
GPS antenna (A2/49a2) (model 168, 208.3, 210)
GPS rear antenna (A2/23a2) (model 170, 208.4)
GPS antenna (A2/23) (model 203, 209)
The actual calculation is essentially based on the measurement of the travel times of the signals sent
synchronously by the various satellites. Here, an important prerequisite is that the satellite and receiver clocks
are synchronized .
For this purpose, the receiver has an automatic time correction feature which again is possible with the aid of
the satellite signals.
If the navigation processor determines that the basic location finding is less accurate than the GPS location
findin
g, the position currently calculated is corrected using GPS data.

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:05 PMPage 83 © 2006 Mitchell Repair Information Company, LLC.