ABS MERCEDES-BENZ ML320 1997 Complete Service Manual

222
Malfunction and indicator lamps
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints Car care Index
ABS malfunction indicator lamp The ABS malfunction indicator lamp in the
instrument cluster comes on with the key in
steering lock position 2 and should go out
with the engine running.
When the ABS malfunction indicator lamp in the
instrument cluster comes on while the engine is
running, it indicates that the ABS has detected a
malfunction and has switched off. In this case, the brake
system functions in the usual manner, but without
antilock assistance.
With the ABS malfunctioning, the BAS, ESP and 4-ETS+
are also switched off. Both malfunction indicator lamps
come on with the engine running.
If the charging voltage falls below 10 volts, the
malfunction indicator lamp comes on and the ABS is
switched off. When the voltage is above this value again,
the malfunction indicator lamp should go out and the
ABS is operational.
Have the system checked at your authorized
Mercedes-Benz Light Truck Center as soon as possible.
See page 201 for notes on antilock brake system (ABS). Adjustable steering wheel – indicator lamp
The indicator lamp in the instrument cluster
comes on with the key in steering lock
position 2 and should go out with the engine
running.
If the indicator lamp does not go out after starting the
engine, the adjustable steering column is not properly
locked.
For locking the adjustable telescoping steering column,
see page 70.
AIRBAG OFF indicator lamp The indicator lamp will light up for
approximately 6 seconds, extinguish, then
blink once, when you turn the key in
steering lock to position 1 or 2.
The 7 indicator lamp stays lit as long as a
BabySmart
TM compatible child seat is properly installed
on the front passenger seat. It indicates that the front
passenger airbag is switched off.
See page 53 for BabySmart
TM airbag and its deactivation
system.
BabySmart
TM is a trademark of Siemens Automotive Corp.
ABS

266
Exterior lamps
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints
Car care Index
Pull off electrical connector (2).
Squeeze tabs (3) together and remove bulb holder.
Push bulb into socket, turn counterclockwise and
remove.
Insert new bulb in socket, push in and twist clockwise.
Reinstall bulb holder.
Reinstall electrical connector (2).
Reinstall taillamp. Turn signal lamp, side
(168 [3 cp bulb])
Carefully slide lamp slightly towards rear (arrow), lift
away its front end first, then remove lamp from panel.
Twist bulb socket counterclockwise and pull out. Pull
bulb out of socket.
Insert new bulb in socket. Reinstall bulb socket.
To reinstall lamp, set rear end of lamp into panel and let
front end snap into place.

267
Exterior lamps
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints
Car care Index
License plate lamps
(C 5 W [tubular] bulb)
Remove both securing screws, remove lamp and take
out bulb. High mounted stop lamp
(1073 [32 cp bulb])
To replace bulb, squeeze both sides (1, arrows) of cover,
fold forward and remove.
Press tab (2, arrow) on reflector and remove reflector.
Press bulb down, turn counterclockwise and remove.
Insert new bulb in socket, push in and twist clockwise.
Reinstall reflector.
Position tabs of cover in slots (3, arrows) and reinstall
cover until properly seated.
P82.10-2347-26
P82.10-2346-26

294
Fuels, coolants, lubricants etc.
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints Car care Index
Engine oils
Engine oils are specifically tested for their suitability in
our engines. Therefore, use only engine oils
recommended by Mercedes-Benz. Information on
recommended brands is available at your authorized
Mercedes-Benz Light Truck Center.
Please follow Service Booklet recommendations for
scheduled oil changes. Failure to do so could result in
engine damage not covered by the Mercedes-Benz
Limited Warranty.
Engine oil additives
Do not blend oil additives with engine oil. They may be
harmful to the engine operation.
Damage or malfunctions resulting from blending oil
additives are not covered by the Mercedes-Benz Limited
War ra nt y. Air conditioner refrigerant
R-134a (HFC) refrigerant and special PAG lubricating oil
is used in the air conditioner system.
Never use R-12 (CFC) or mineral-based lubricating oil,
otherwise damage to the system will occur.
Brake fluid
During vehicle operation, the boiling point of the brake
fluid is continuously reduced through the absorption of
moisture from the atmosphere. Under extremely hard
operating conditions, this moisture content can lead to
the formation of bubbles in the system thus reducing
the system’s efficiency.
The brake fluid must therefore be replaced every two
years, preferably in the spring.
It is recommended to use only brake fluid approved by
Mercedes-Benz. Your authorized Mercedes-Benz Light
Truck Center will provide you with additional
information.

300
Index
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints Car care
Index
Index
AABS (Antilock brake system) ....................................... 201 LOW RANGE – ABS ..................................................202
Malfunction indicator lamp .....................................222
Adjustable steering wheel .............................................. 70 Indicator lamp ...........................................................222
Adjusting headlamp aim ...............................................268
Air conditioner refrigerant ...........................................294
Air pump .........................................................................239
Air recirculation ............................................................ 102
Airbag deactivation system ............................................ 53
Airbag OFF indicator lamp ...........................................222
Airbags .............................................................................. 56
Alarm system ............................................................. 35, 36
Anticorrosion/antifreeze .................... 181, 235, 293, 297
Antiglare night position ................................................. 71
Antilock brake system (ABS) ....................................... 201 LOW RANGE – ABS ..................................................202
Malfunction indicator lamp .....................................222
Antitheft alarm system ................................................... 35
Aquaplaning ................................................................... 178 Ashtray
Center console, front ................................................ 118
Rear passenger compartment ................................. 118
Automatic central locking ..............................................32
Automatic transmission ................................................ 165 Emergency Operation ............................................... 172
Fluid level .................................................................. 234
Selector lever position .............................................. 168
Transmission selector lever, manually unlocking 259
BBabySmart
TM airbag deactivation system ..................... 53
Self-test ......................................................................... 53
BAS (Brake assist system) ............................................ 199 Malfunction indicator lamp .....................................221
Battery .............................................................................251 Battery recycling ...................................................... 252
Charge indicator lamp ............................................. 223
Battery, remote control ................................................. 270
Block heater .................................................................... 182
Blocking of rear door windows ....................................105
Brake assist system (BAS) ............................................ 199 Malfunction indicator lamp .....................................221

306
Index
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints Car care
Index
Parking lamp ...................................................... 90, 264
Replacing bulbs .........................................................260
Side marker lamp ......................................................264
Standing lamp .................................................... 90, 264
Taillamp assemblies .................................................265
Turn signal lamp ................................................ 90, 264
Turn signal lamp, side .............................................266
Layout of poly-V-belt ......................................................286
Liftgate ............................................................................... 34 Unlocking ..................................................................... 28
Lighter ..............................................................................119
Limp home mode (Automatic transmission) ............. 172
Loading instructions ..................................................... 136
Lockable storage compartment .....................................116
Locking and unlocking the vehicle ............................... 27
Low engine coolant level warning ..............................224
Low engine oil level warning .......................................224
LOW RANGE Indicator lamp ........................................................... 221
LOW RANGE mode ........................................................209 LOW RANGE – 4-ETS+ .............................................204
LOW RANGE – ABS ..................................................202
LOW RANGE – ESP ...................................................208
MMaintenance ...................................................................147
Malfunction and indicator lamps in the instrument cluster ......................................................................... 218
Manual locking/unlocking the doors ...........................29
Manual operation of Skyview Top .............................. 273
Manual operation of sliding/pop-up roof .................. 272
Manual seat, front ............................................................39
MCS, radio and telephone ............................................146
Mechanical keys ............................................................... 29
Memory .............................................................................42 Recalling ....................................................................... 42
Storing ........................................................................... 42
Mirror, exterior, adjusting ..............................................73
Mirror, exterior, rear view ..............................................73
Mirror, inside, rear view ................................................. 71
Mirrors, vanity ................................................................ 113

ContentsSafety and Security........................... 57
Occupant safety................................... 58
Airbags ........................................... 59
Seat belts ....................................... 64
Children in the vehicle .................... 67
Blocking of rear door
window operation ........................... 73
Panic alarm .......................................... 75
Activating ....................................... 75
Deactivating ................................... 75
Driving and safety systems .................. 76
ABS ................................................ 76
BAS ................................................ 78
4-ETS .............................................. 79
EBP................................................. 80
ESP ................................................. 80
Anti-theft systems................................ 83
Immobilizer..................................... 83
Anti-theft alarm .............................. 83
Tow-away alarm,
glass breakage sensor.................... 84
Controls in detail............................... 87
Locking and unlocking ......................... 88
Remote control with folding key..... 88
Opening the doors
from the inside ............................... 90
Opening the liftgate ....................... 91
Closing the liftgate ......................... 92
Automatic central locking .............. 93
Locking and unlocking
from the inside ............................... 94
Seats ................................................... 95
Removing and installing
front seat head restraints............... 95
Rear seat head restraints ............... 96
Heated seats* ................................ 98
Rear seats ...................................... 99
Third row seats* .......................... 102
Memory function* ............................. 105
Storing exterior rear view mirror
parking position ........................... 105
Storing positions in memory ........ 106
Recalling positions from memory . 106Lighting ............................................. 107
Combination switch ..................... 107
Fog lamps .................................... 111
Hazard warning flasher ................ 112
Interior lighting ............................ 112
Instrument cluster ............................. 116
Instrument cluster illumination .... 116
Coolant temperature gauge ......... 117
Display in the speedometer ......... 117
Resetting trip odometer ............... 118
Tachometer .................................. 118
Outside temperature indicator ..... 118
Setting the clock .......................... 118
Automatic transmission ..................... 119
One-touch gearshifting ................ 120
Gear ranges ................................. 121
Gear selector lever position ......... 122
Accelerator position ..................... 123
Towing a trailer ............................ 124
Emergency operation
(Limp Home Mode) ...................... 124

25 At a glance
Instrument cluster
Item
Page
1
Gauge for
Coolant tempera-
ture
117
Outside tempera-
ture
118
Fuel reserve
warning lamp
252
2
Knob for
Activating instru-
ment cluster
116
Adjusting intensity
of instrument lamps
116
Main odometer
117
Trip odometer
readout / reset
118
Activating Flexible
Service System
(FSS) indicator
232
Item
Page
3
Left indicator lamps
with:¿Brake Assist
System
(BAS) / Electronic
Stability Program
(ESP) malfunction
warning lamp
246
{Electronic Traction
System (4-ETS) mal-
function indicator
lamp
252
-Antilock Brake Sys-
tem (ABS) malfunc-
tion warning lamp
242
2Brake pad wear in-
dicator lamp
254
:Low engine oil level
warning lamp
253
Item
Page
/Low engine coolant
level warning lamp
249
êLow range indicator
lamp
252
?Engine malfunction
indicator lamp
248
4
Speedometer with:v4-ETS (Electronic
Traction
System)/Electronic
Stability Program
(ESP) warning lamp
251
Trip / main
odometer
117
Display for Flexible
Service System
(FSS)
232
Engine oil level indi-
cator
219

48 Getting startedDrivingAfter a cold start, the automatic transmis-
sion shifts at a higher engine revolution.
This allows the catalytic converter to reach
its operating temperature earlier.
More information can be found in the “Op-
eration” section (
page 191).
For information on off-road driving, see
“Driving instructions” (
page 200).
Switching on headlamps
The combination switch is located on the
left of the steering column.Combination switch1 Off
2Low beam headlamps on
3High beam lamps on
Turn the switch toõ.
Low beam headlamps on.
!If you hear a warning signal when driv-
ing off, you have forgotten to release
the parking brake.
Release the parking brake.Warning!
G
It is dangerous to shift the gear selector
lever out ofP orN if the engine speed is
higher than idle speed. If your foot is not
firmly on the brake pedal, the vehicle could
accelerate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and when
your right foot is firmly on the brake pedal.
Warning!
G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced vehi-
cle control. Your vehicle’s ABS will not pre-
vent this type of loss of control.!Place the gear selector lever in
positionR only when the vehicle is
stopped in order to avoid damaging the
transmission.!Do not run cold engine at high engine
speeds. Running a cold engine at high
engine speeds may shorten the service
life of the engine.

76 Safety and SecurityDriving and safety systems
Driving and safety systemsIn this section you will find information on
the following driving safety systems:

ABS (A
ntilock B
rake S
ystem)


BAS (B
rake A
ssist S
ystem)


4-ETS (E
lectronic T
raction S
ystem)


EBP (E
lectronic B
rake P
roportioning)


ESP (E
lectronic S
tability P
rogram)
ABS
The Antilock Brake System (ABS) regulates
the brake pressure so that the wheels do
not lock during braking. This allows you to
maintain the ability to steer your vehicle.
The ABS is functional above a speed of ap-
proximately 5 mph (8 km / h) independent
of road surface conditions.
On slippery road surfaces, the ABS will re-
spond even with light brake pressure.
The -indicator lamp in the instrument
cluster (
page 25) comes on when you
turn the key to position2. It goes out when
the engine is running.
iIn winter operation, the maximum ef-
fectiveness of the ABS, the BAS, the
ESP, the EBP, and the 4-ETS is only
achieved with winter tires (M + S tires)
or snow chains as required.
Warning!
G
The following factors increase the risk of
accidents:

Excessive speed, especially in turns


Wet and slippery road surfaces


Following another vehicle too closely
ABS, BAS, ESP and 4-ETS cannot reduce this
risk.
Always adjust your driving style to the pre-
vailing road and weather conditions.
Warning!
G
Do not pump the brake pedal. Use firm,
steady brake pedal pressure instead. Pump-
ing the brake pedal defeats the purpose of
the ABS and significantly reduces braking
effectiveness.