2002 MERCEDES-BENZ ML320 BAS malfunction

243 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Electronic stability program (ESP)/Electronic
traction system (4-ETS+) — warning lamp
The yellow warning lamp in the
speedometer dial comes on with the key in
steering lock position 2. It should go out
with engine running.
See page 221 for 4-ETS+ and page 223 for ESP if the
warning lamp lights up or flashes when the vehicle is
moving.
BAS/ESP malfunction indicator lamp
The malfunction indicator lamp for the ESP
is combined with that of the BAS.
The yellow BAS / ESP malfunction indicator
lamp in the instrument cluster comes on with the key in
steering lock position 2. It should go out with the engine
running.
If the BAS / ESP malfunction indicator lamp remains
illuminated with the engine running, see page 217 for
BAS and page 223 for ESP.4-ETS+ malfunction indicator lamp
The yellow ETS malfunction indicator lamp
in the instrument cluster comes on with the
key in steering lock position 2. It should go
out with the engine running.
If the ETS malfunction indicator lamp remains
illuminated with the engine running a malfunction has
been detected, see page 221 for 4-ETS+.
LOW RANGE indicator lamp
The yellow LOW RANGE indicator lamp in
the instrument cluster comes on with the
key in steering lock position 2. With the
LOW RANGE mode deactivated it should go out with the
engine running.
With the LOW RANGE mode activated the LOW RANGE
indicator lamp is illuminated continuously.
If the indicator lamp blinks fast, one or more switching
conditions were not observed, or the LOW RANGE mode
is defective, see page 227 for LOW RANGE mode.
BAS
ESP
ETSLOW
RANGE

244 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical 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 remains illuminated 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 219 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 74.
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 55 for BabySmart
TM airbag and its deactivation
system.
BabySmart
TM is a trademark of Siemens Automotive Corp.
ABS

316 Fuels, coolants, lubricants etc.
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical 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 in the Factory
Approved Service Products pamphlet, or 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
Warranty.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.

322 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Index
AABS (Antilock brake system) ....................................... 219
LOW RANGE – ABS .................................................. 220
Malfunction indicator lamp ..................................... 244
Adjustable steering wheel .............................................. 74
Indicator lamp ...........................................................244
Adjusting headlamp aim ...............................................290
Air conditioner refrigerant ........................................... 316
Air pump ......................................................................... 261
Air recirculation .............................................................116
Airbag deactivation system ............................................ 55
Airbag OFF indicator lamp ........................................... 244
Airbags .............................................................................. 58
Alarm system ............................................................. 36, 37
Anticorrosion/antifreeze ..................... 200, 257, 315, 319
Antiglare night position ................................................. 75
Antilock brake system (ABS) ....................................... 219
LOW RANGE – ABS .................................................. 220
Malfunction indicator lamp ..................................... 244
Antitheft alarm system ................................................... 36
Aquaplaning ................................................................... 196
AshtrayCenter console, front ................................................ 137
Rear passenger compartment ................................. 137
Automatic central locking .............................................. 33
Automatic climate control ............................................ 108
Adjustable air outlets,
rear passenger compartment .............................120
Air distribution, manual .......................................... 114
Air recirculation ........................................................ 116
Air volume, manual .................................................. 114
Defroster/Windows fogged up
on the inside ......................................................... 115
Economy mode .......................................................... 117
Programming the
basic temperature setting ................................... 113
Rear passenger compartment
climate control ...................................................... 119
Rear window defroster ............................................. 121
Residual engine heat utilization ............................. 117
Switching off the rear passenger
compartment ventilation and
rear automatic climate control ........................... 118
Switching on and off ................................................. 118
Windshield fogged up on outside ........................... 115
Automatic climate control rear
Manual setting of air volume and
air distribution in the rear passenger
compartment ......................................................... 119

323 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex Automatic transmission ............................................... 183
Emergency Operation .............................................. 190
Fluid level ...................................................................256
Selector lever position .............................................. 186
Transmission selector lever,
manually unlocking ............................................. 281
BBabySmart
TM airbag deactivation system ..................... 55
Self-test ......................................................................... 55
BAS (Brake assist system) ............................................ 217
Malfunction indicator lamp ..................................... 243
Battery .............................................................................273
Battery recycling ....................................................... 274
Charge indicator lamp ..............................................245
Battery, remote control ................................................. 292
Block heater .................................................................... 201
Blocking of rear door windows .................................... 124
Brake assist system (BAS) ............................................ 217
Malfunction indicator lamp ..................................... 243
Brake fluid .............................................................. 193, 316
Brake warning lamp ................................................. 241
Capacity ...................................................................... 315
Brake pad wear indicator ............................................. 247Brake warning lamp ...................................................... 241
Brake fluid low .......................................................... 241
Brakes ......................................................191, 193, 315, 316
Bulbs
See Replacing bulbs ................................................. 282
CCapacities
Fuels, coolants, lubricants etc. ............................... 314
Cargo area ....................................................................... 149
Hooks .......................................................................... 151
Loading instructions ................................................. 154
Cargo area cover blind .................................................. 155
Cargo compartment lamp ............................................. 129
Cargo floor plates
Removable .................................................................. 147
Storage ........................................................................ 148
Cargo tie-down rings ..................................................... 150
Catalytic converter ......................................................... 178
Cellular telephone .......................................................... 157
Center console .................................................................. 20
Central locking switch .................................................... 32