brake boost MERCEDES-BENZ G500 2002 W463 Owner's Manual

3 Contents
DrivingControl and operation of
radio transmitters ..................... 190
The first 1 000 miles
(1 500 km) ................................. 191
Maintenance ................................... 191
Tele Aid ........................................... 192
Catalytic converter ........................202
Emission control ............................203
Starter switch .................................204
Starting and turning off
the engine ..................................206
Automatic transmission ...............207
Parking brake ................................. 215Driving instructions ....................... 216
Drive sensibly – save fuel ......... 216
Drinking and driving ................. 216
Pedals ........................................... 216
Power assistance .........................217
Brakes ...........................................217
Driving off ....................................218
Parking ......................................... 219
Tires .............................................. 219
Snow chains ............................... 222
Winter driving instructions ..... 222
Deep water .................................. 224
Passenger compartment ........... 225
Traveling abroad ........................ 225
Off-Road driving ............................ 226
Cruise control ................................ 234
Brake assist system
(BAS) .......................................... 237Antilock brake system
(ABS) ...........................................239
Four-wheel electronic traction system
(4-ETS) ........................................ 241
Electronic Brake Booster
(EBB) ...........................................242
Electronic stability program
(ESP) ...........................................243
Transfer case ..................................247
Switching transfer case .............248
A few words about differentials
and differential locks ............... 251
Differential locks ............................253
What you should know
at the gas station .......................258
Check regularly and before a long
trip ............................................... 261
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4 Contents
Instrument cluster displayMalfunction and indicator
lamps in the
instrument cluster ....................264
On-board diagnostic system .........265
Check engine malfunction
indicator lamp .............................265
Brake warning lamp ..................266
Supplemental restraint system
(SRS) indicator lamp ..................267
Fuel reserve warning .................268
ABS malfunction
indicator lamp .............................269
Electronic stability program
(ESP) — warning lamp ...............270
Seat belt nonusage
warning lamp .............................270
Malfunction and indicator lamp
in the center console ................ 271
AIRBAG OFF indicator lamp ..... 271Malfunction and warning
messages in the
multifunction display .............. 272
DISPLAY DEFECTIVE
(engine control unit) ................. 273
DISPLAY DEFECTIVE
(several systems) ....................... 273
BATTERY / ALTERNATOR ........274
ANTILOCK BRAKE SYSTEM .... 275
BRAKE ASSIST ............................276
BRAKE PAD WEAR .................... 277
BRAKE FLUID ............................ 277
PARKING BRAKE ....................... 278
SEAT BELT SYSTEM .................. 278
ELEC. STABIL. PROG.
(Electronic stability program) . 279
COOLANT
(coolant level) ............................. 280
COOLANT
(coolant temperature) ............... 281
ENGINE OIL LEVEL ................... 282LIGHTING SYSTEM ....................283
LIGHT SENSOR ...........................285
DOOR ...........................................285
TRUNK OPEN .............................286
HOOD ...........................................286
TELEPHONE – FUNCTION .......287
TELE AID .....................................287
WASHER FLUID .........................288
RESTRAINT SYSTEM .................289
KEY ...............................................289
FUEL RESERVE ..........................290
UNDERVOLTAGE ........................290
ELECTRONIC BRAKE BOOSTER
(EBB) ............................................ 291
ENGINE AIR FILTER .................. 291
TC SHIFT ....................................292
TC SHIFT CONDITIONS ............292
TC IN NEUTRAL .........................293
TRANSFER CASE .......................293
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189 Contents - Driving
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
DrivingControl and operation of radio
transmitters ............................... 190
The first 1 000 miles
(1 500 km) ................................. 191
Maintenance ................................... 191
Tele Aid ........................................... 192
Catalytic converter ........................202
Emission control ............................203
Starter switch .................................204
Starting and turning off
the engine ..................................206
Automatic transmission ...............207
Parking brake ................................. 215Driving instructions ....................... 216
Drive sensibly – save fuel ......... 216
Drinking and driving ................. 216
Pedals ........................................... 216
Power assistance .........................217
Brakes ...........................................217
Driving off ....................................218
Parking ......................................... 219
Tires .............................................. 219
Snow chains ............................... 222
Winter driving instructions ..... 222
Deep water .................................. 224
Passenger compartment ........... 225
Traveling abroad ........................ 225
Off-Road driving ............................ 226
Cruise control ................................ 234Brake assist system
(BAS) ...........................................237
Antilock brake system
(ABS) ...........................................239
Four-wheel electronic
traction system (4-ETS) ............ 241
Electronic Brake Booster
(EBB) ...........................................242
Electronic stability program
(ESP) ...........................................243
Transfer case ..................................247
Switching transfer case .............248
A few words about differentials
and differential locks ............... 251
Differential locks ............................253
What you should know at
the gas station ...........................258
Check regularly and before a long
trip ............................................... 261
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224 Driving instructions
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
In winter operation, the maximum effectiveness of the
antilock brake system (ABS), the four wheel electronic
traction system (4-ETS), the electronic stability program
(ESP), and electronic brake booster (EBB) can only be
achieved with M+S rated radial-ply tires and / or snow
chains recommended by Mercedes-Benz. Snow chains
maximize performance.
For driving instructions using snow chains see
page 222.Deep water
Caution!
Do not drive through flooded areas or water of unknown
depth. Before driving through water, determine its
depth. It should not be deeper than approximately
20 inches (50 cm).
If you must drive through deep water, drive slowly to
prevent water from entering the engine compartment or
passenger compartment, being ingested by the air
intake, possibly causing damage to electrical
components or wiring, to engine or transmission that is
not covered by the Mercedes-Benz Limited Warranty.
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237 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Brake assist system (BAS)The BAS is designed to maximize the vehicle’s braking
capability during emergency braking maneuvers by
having maximum power boost applied to the brakes
more quickly in emergency braking conditions than
might otherwise be afforded solely by the driver’s
braking style. This can help reduce braking distances
over what ordinary driving and braking style might do.
The BAS complements the antilock brake system (ABS).
Applying the brakes very quickly results in maximum
BAS assistance.
To receive the benefit of the system you must apply
continuous full braking power during the stopping
sequence. Do not reduce brake pedal pressure.
Once the brake pedal is released, the BAS is deactivated.
At the instant one of the wheels is about to lock up, a
slight pulsation can be felt in the brake pedal,
indicating that the ABS is in the regulating mode. Keep
firm and steady pressure on the brake pedal while
experiencing the pulsation.
Wa r n i n g !
BAS cannot prevent the natural laws of physics
from acting on the vehicle, nor can it increase
braking efficiency beyond that afforded by the
condition of the vehicle brakes and tires or the
traction afforded. The BAS cannot prevent
ac c id ent s, i nc l udi ng t hose resul tin g from exc es si ve
speed in turns, following another vehicle too
closely, or aquaplaning. Only a safe, attentive, and
skillful driver can prevent accidents. The
capabilities of a BAS equipped vehicle must never
be exploited in a reckless or dangerous manner
which could jeopardize the user’s safety or the
safety of others.
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242 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Note:
In winter operation, the maximum effectiveness of the
electronic traction system is only achieved with
Mercedes-Benz recommended M+S rated radial-ply tires
and / or snow chains.Electronic Brake Booster (EBB)
The EBB enhances braking effectiveness by allowing the
rear brakes to supply a greater proportion of the braking
effort without a loss of vehicle stability.
If a warning tone sounds for five seconds and the
symbols É, v and - are displayed in the
instrument cluster, the system has detected a
malfunction and is switched off. Have the system
checked immediately at an authorized Mercedes-Benz
Light Truck Center. Failure to do so could result in an
accident, since the enhanced braking effect is not
available when the system is switched off.
Note:
When the EBB is switched off, every time the engine is
started, a warning tone will sound for five seconds and
the symbols É and - will light up. In addition,
whenever the brakes are applied at speeds exceeding
25 mph (40 km / h), the warning tone sounds for five
seconds.
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263 Contents - Instrument cluster display
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Instrument cluster displayMalfunction and indicator
lamps in the
instrument cluster ....................264
On-board diagnostic system .........265
Check engine malfunction
indicator lamp .............................265
Brake warning lamp ..................266
Supplemental restraint system
(SRS) indicator lamp ..................267
Fuel reserve warning .................268
ABS malfunction
indicator lamp .............................269
Electronic stability program
(ESP) — warning lamp ...............270
Seat belt nonusage
warning lamp .............................270
Malfunction and indicator lamp
in the center console ................ 271
AIRBAG OFF indicator lamp ..... 271Malfunction and warning
messages in the
multifunction display .............. 272
DISPLAY DEFECTIVE
(engine control unit) ................. 273
DISPLAY DEFECTIVE
(several systems) ....................... 273
BATTERY / ALTERNATOR ........274
ANTILOCK BRAKE SYSTEM .... 275
BRAKE ASSIST ............................276
BRAKE PAD WEAR .................... 277
BRAKE FLUID ............................ 277
PARKING BRAKE ....................... 278
SEAT BELT SYSTEM .................. 278
ELEC. STABIL. PROG.
(Electronic stability program) . 279
COOLANT
(coolant level) ............................. 280
COOLANT
(coolant temperature) ............... 281
ENGINE OIL LEVEL ................... 282LIGHTING SYSTEM ....................283
LIGHT SENSOR ...........................285
DOOR ...........................................285
TRUNK OPEN .............................286
HOOD ...........................................286
TELEPHONE – FUNCTION .......287
TELE AID .....................................287
WASHER FLUID .........................288
RESTRAINT SYSTEM .................289
KEY ...............................................289
FUEL RESERVE ..........................290
UNDERVOLTAGE ........................290
ELECTRONIC BRAKE BOOSTER
(EBB) ............................................ 291
ENGINE AIR FILTER .................. 291
TC SHIFT ....................................292
TC SHIFT CONDITIONS ............292
TC IN NEUTRAL .........................293
TRANSFER CASE .......................293
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266 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Brake warning lamp
Except Canada
Canada only
When the brake warning lamp and message appear
while the engine is running, this means:
•there is insufficient brake fluid in the reservoir
(engine running and parking brake released), or
•the parking brake is set (engine running).
If a warning tone sounds for 5 seconds and the warning
lampsÉ and - are displayed in the instrument
cluster, the electronic brake booster (EBB) has a
malfunction and is switched off. See page 242 for notes
on the electronic brake booster (EBB).Note:
If you find that the minimum mark on the brake fluid
reservoir is reached, have the brake system checked for
brake pad thickness and leaks.
Wa r n i n g !
Driving with the brake warning lamp illuminated
can result in an accident. Have your brake system
checked immediately if the brake warning lamp
stays on. Do n ot a dd b ra ke f l uid b efore check in g t he
brake system. Overfilling the brake fluid reservoir
can result in spilling brake fluid on hot engine
parts and the brake fluid catching fire. You can be
seriously burned.
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269 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
electronic key in starter switch position 2
and should go out with the engine running.
When the ABS malfunction indicator lamp symbol and
warning 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.
A malfunctioning ABS control unit can possibly affect
the operation of other systems (e.g. Navigation,
Automatic transmission). Be guided accordingly with
respect to the use of those systems and have the system
checked at your authorized Mercedes-Benz Light Truck
Center as soon as possible.
With the ABS malfunctioning the BAS, ESP, EBB and
4-ETS are also switched off. The malfunction indicator
lamps and malfunction messages in the multifunction
display come on with the engine running.If a warning tone sounds for 5 seconds and the warning
lamps- and É are displayed in the instrument
cluster, the EBB has a malfunction and is switched off.
See page 242 for notes on the electronic brake booster
(EBB).
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 239 for notes on antilock brake system (ABS).
Note:
If the transfer case differential lock is engaged the ABS
warning lamp comes on and the ABS, ESP, BAS, EBB
and 4-ETS are switched off. There is no malfunction in
the system.
ABS
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291 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index ELECTRONIC BRAKE BOOSTER (EBB)
* C = Category, see page 272.
ENGINE AIR FILTER* C = Category, see page 272.
1 The engine air filter is clogged and must be replaced. Line 1 Line 2 C*
ELECTRIC BRAKE BOOSTER VISIT WORKSHOP! 2Line 1 Line 2 C*
ENGINE AIR FILTER
1
VISIT WORKSHOP! 2
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