1997 MERCEDES-BENZ ML350 sensor

Fig. 55: Connecting Resistance Substituti on Unit (2000 Models)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig. 56: Testing Side Air Bag Sensor (2000 Models)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 65 © 2006 Mitchell Repair Information Company, LLC.

Fig. 57: Testing Seat Occupation Recognition Sensor (2000 Models)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 66 © 2006 Mitchell Repair Information Company, LLC.

Fig. 58: Testing Seat Occupation Recognition Sensor (2000 Models)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
WIRE REPAIR
If any part of SRS wiring harness is damaged, DO NOT repair wiring harness, replace complete wiring harness.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 67 © 2006 Mitchell Repair Information Company, LLC.

1
Contents
IntroductionProduct information .......................... 7
Roadside assistance ......................... 10
Where to find it ................................ 14
Reporting Safety Defects ................ 16Instruments and controlsInstruments and controls ............... 18 Center console .............................. 20
Overhead control panel ............... 21OperationVehicle keys ...................................... 24
Start lock-out .................................... 25
General notes on the central locking system ............... 26
Central locking system ................... 26 Radio frequency
remote control .............................. 26
Unlocking the liftgate .................. 28
Panic button .................................. 28
Mechanical keys ........................... 29 Doors ................................................. 30
Central locking switch .................... 32 Automatic central locking .......... 32
Emergency unlocking in case of accident ................................... 33
Liftgate .............................................. 34
Antitheft alarm system ................... 35
Tow-away alarm and glass breakage sensor ............... 36
Seats, front ....................................... 37
Manual seats ................................ 39
Power seats ................................... 40
Head restraint ...............................41
Heated seats ..................................... 44
Seat belts and integrated restraint system .......................... 46
Seat belts .......................................... 46 Seat belt nonusage
warning system ............................ 47
BabySmart
TM airbag
deactivation system ................... 53
Self-test BabySmart
TM
without special child
seat installed ................................ 53 Supplemental restraint
system (SRS) ................................ 54
Emergency tensioning retractor (ETR) ............................. 55
Airbags .............................................. 56 Safety guidelines for the
seat belt, emergency
tensioning retractor
and airbag ..................................... 63
Infant and child
restraint systems .......................... 65
Adjustable steering wheel .............. 70
Inside rear view mirror .................. 71 Antiglare night position .............. 71
Exterior rear view mirrors ............. 73 Exterior rear view mirror,
electrically folding ....................... 75
Instrument cluster ........................... 76
Indicator lamps in the instrument cluster ...................... 78
Trip computer ................................... 83
Flexible service system (FSS) ........ 87
Engine oil level indicator ................ 89
Exterior lamp switch ....................... 90

22
Contents - Operation
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
OperationVehicle keys ...................................... 24
Start lock-out .................................... 25
General notes on the central locking system ............... 26
Central locking system ................... 26 Radio frequency
remote control .............................. 26
Unlocking the liftgate .................. 28
Panic button .................................. 28
Mechanical keys ........................... 29
Doors .................................................. 30
Central locking switch .................... 32 Automatic central locking .......... 32
Emergency unlocking in case of accident .................................... 33
Liftgate ............................................... 34
Antitheft alarm system ................... 35
Tow - aw ay a lar m a n d glass breakage sensor ................ 36
Seats, front ........................................ 37 Manual seats ................................. 39
Power seats ................................... 40 Head restraint ...............................41
Heated seats ..................................... 44
Seat belts and integrated restraint system .......................... 46
Seat belts .......................................... 46 Seat belt nonusage
warning system ............................ 47
BabySmart
TM airbag
deactivation system ................... 53
Self-test BabySmart
TM
without special child
seat installed ................................ 53
Supplemental restraint system (SRS) ............................... 54
Emergency tensioning retractor (ETR) ............................ 55
Airbags .............................................. 56 Safety guidelines for the
seat belt, emergency
tensioning retractor
and airbag ..................................... 63
Infant and child
restraint systems ......................... 65
Adjustable steering wheel .............. 70
Inside rear view mirror ...................71 Antiglare night position .............. 71
Exterior rear view mirrors ............. 73 Exterior rear view mirror,
electrically folding ....................... 75
Instrument cluster ........................... 76
Indicator lamps in the instrument cluster ...................... 78
Trip computer ................................... 83
Flexible service system (FSS) ........ 87
Engine oil level indicator ................ 89
Exterior lamp switch ....................... 90
Fo g la mp sw itch (except Canada) .......................... 92
Fo g la mp sw itch (Canada only) .............................. 93
Hazard warning flasher switch ............................................ 94
Headlamp cleaning system ............ 94
Windshield wiper/washer switch ............................................ 95
Rear window wiper/washer ........... 96
Climate control ................................. 98
Basic setting – Heater ............... 100

36
Tow-away protection
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Tow-away alarm and glass breakage sensor
The switch is located in the overhead console.
The tow-away alarm and glass breakage sensor are part
of the antitheft alarm system.
Once the alarm system has been armed, the turn signal
lamps will flash rapidly and the horn will sound when
someone attempts to raise the vehicle, or breaks a
window and reaches into the passenger compartment. The alarm will last approximately 3 minutes in the form
of rapidly flashing turn signal lamps. At the same time
the horn will sound for approximately 30 seconds. The
alarm will stay on even if the vehicle is immediately
lowered.
If the alarm stays on for more than 20 seconds, an
emergency call is initiated automatically. See Tele Aid
on page 148.
To prevent triggering the tow-away alarm feature, switch
off the tow-away alarm and glass breakage sensor before
towing the vehicle, or when parking on a surface subject
to movement, such as a ferry or auto train.
To do so, turn key in steering lock to position 1, then
return it to position 0 and remove key from steering
lock.
Within 30 seconds, push left or right button. (On
vehicles equipped with optional trip computer, push
RESET or MODE button, display shows OFF.)
Exit vehicle, and lock vehicle with remote control.
The tow-away alarm and glass breakage sensor remain
switched off until the key is inserted in steering lock
and turned to position 1.

58
Restraint systems
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
out after approximately 5 seconds; after the lamp goes
out, the system continues to monitor the components
and circuitry of the airbag system and will indicate a
malfunction by coming on again. If the lamp does not
come on at all or if it fails to extinguish after
approximately 5 seconds or if it comes on thereafter,
a malfunction in the system has been detected.
The following system components are monitored or
undergo a self-check: crash-sensor(s), airbag ignition
circuits, front seat belt buckles, emergency tensioning
retractors, seat sensor.
Initially, when the key is turned from steering lock
position 0 to positions 1 or 2, malfunctions in the
crash-sensor are detected and indicated (the “SRS”
indicator lamp stays on longer than 5 seconds or does
not come on).
Have the system checked at your authorized
Mercedes-Benz Light Truck Center immediately. In the operational mode, after the indicator lamp has
gone out following the initial check, interruptions or
short circuits in the airbag ignition circuit and in the
driver and front passenger seat belt buckle harnesses,
and low voltage in the entire system are detected and
indicated.
Wa r n i n g !
In the event a malfunction of the “SRS” is indicated
as outlined above, the “SRS” may not be
operational. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Light Truck Center immediately to
have the system checked; otherwise the “SRS” may
not be activated when needed in an accident, which
could result in serious or fatal injury, or it might
deploy unexpectedly and unnecessarily which
could also result in injury.

72
Rear view mirrors
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Automatic (optional on ML 320):
With the key in steering lock position 2 and the
automatic antiglare function activated, the mirror
reflection brightness responds to changes in light
sensitivity.
To a ctiva te:
Press button (1). The green indicator lamp in the rear
view mirror lights up. To deactivate:
Press button (1) again. The indicator lamp in the rear
view mirror goes out. The mirror brightness does not
respond to changes in light sensitivity.
Notes:
With gear selector lever in position “R”, or with the
interior lamps (except cargo compartment lamp)
switched on, the mirror brightness does not respond to
changes in light sensitivity.
The automatic antiglare function does not react, if
incoming light is not aimed directly at sensors in the
mirror.
Wa r n i n g !
In the case of an accident liquid electrolyte may
escape the mirror housing when the mirror glass
breaks.Electrolyte has an irritating effect. Do not allow the
liquid come into contact with eyes, skin, clothing,
or respiratory system. In cases it does, immediately
flush affected area with water, and seek medical
help if necessary.