349 Operation
Driving instructions
To help prevent brake disk corrosion after
driving on wet road surfaces (particularly
salted roads), it is advisable to brake the
vehicle with considerable force prior to
parking. The heat generated serves to dry
the brakes.
If your brake system is normally only sub-
jected to moderate loads, you should occa-
sionally test the effectiveness of the
brakes by applying above-normal braking
pressure at higher speeds. This will also
enhance the grip of the brake pads.
Refer to the description of the Brake Assist
System (BAS) (
page 103).Brake pad wear or a leak in the system may
be the reason for low brake fluid in the
reservoir.
The brake fluid level in the reservoir may
be too low if the brake warning lamp in the
instrument cluster comes on and an
acoustic warning sounds although the
parking brake is released (
page 437).
Observe additional messages in the multi-
function display that may appear
(
page 469).
Have the brake system inspected
immediately. Contact an authorized
Mercedes-Benz Light Truck Center.
All checks and service work on the brake
system should be carried out by qualified
technicians only. Contact an authorized
Mercedes-Benz Light Truck Center.
Only install brake pads and brake fluid
recommended by Mercedes-Benz.
After hard braking, it is advisable to drive
on for some time, rather than immediately
park, so that the air stream will cool down
the brakes faster.
Warning!G
Make sure not to endanger any other road
users when carrying out these braking
maneuvers.
Warning!G
If other than recommended brake pads are
installed, or other than recommended brake
fluid is used, the braking properties of the
vehicle can be degraded to an extent that
safe braking is substantially impaired. This
could result in an accident.
!When driving down long and steep grades,
relieve the load on the brakes by shifting into a
lower gear to use the engine’s braking power.
This helps prevent overheating of the brakes and
reduces brake pad wear.
When using the engine’s braking power, a drive
wheel may not spin for an extended period of
time, e.g. on slippery road surfaces. This may
cause serious damage to the drivetrain which is
not covered by the Mercedes-Benz Limited
Warranty.
164.boo Seite 349 Freitag, 30. März 2007 12:54 12
539 Practical hints
Towing the vehicle
If you want the gear position to remain in
neutral positionN, observe the following
instructions.Vehicles with SmartKey:
With the vehicle at a standstill and the
ignition switched on shift the automatic
transmission to neutral positionN.
If engaged, release the parking brake
(
page 59).
Switch off the ignition and leave the
SmartKey in the starter switch.
Vehicles with KEYLESS-GO*:
With the vehicle at a standstill, depress
the brake pedal and keep it pressed.
With the ignition switched on shift the
automatic transmission to park
positionP.
Release the brake pedal.
Warning!G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle. Adapt your driving accordingly.
!When towing the vehicle with all wheels on
the ground, the automatic transmission must be
in neutral positionN.
If you turn off the engine
using the SmartKey and
remove the SmartKey from the starter
switch
or
open a front door
or when using the KEYLESS-GO* start/stop
button and open a front door
the automatic transmission will shift to park
positionP automatically.
Warning!G
When leaving the SmartKey or SmartKey
with KEYLESS-GO* in the starter switch, do
not leave children unattended in the vehicle.
It is possible for children to switch on the
ignition which could result in unsupervised
use of vehicle equipment.
A child’s unsupervised access to a vehicle
could result in an accident and/or serious
personal injury.
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586 Index
Plastic and rubber parts, cleaning 432
Poly-V-belt drive
Layout (GL 320 CDI) 552
Layout (GL 450, GL 550) 552
Positions (Memory function*) see Seats
Pounds per square inch see PSI
Power assistance 348
Power outlets 324
Power seat see Seats, Power
Power tilt/sliding sunroof* 251
Convenience closing feature 250
Opening/closing 251
Stopping 250
Summer opening feature 249
Synchronizing 253
Power washer 426Power windows 246
Cleaning 431
Convenience closing feature 250
Door windows 247
Hinged quarter windows* 248
Opening/closing 246
Rear door windows, Blocking
operation 98
Summer opening feature 249
Synchronizing, Door windows 249
Practical hints 490
Premium unleaded gasoline 565
Problems
While driving 65
With starting see Starting difficulties
With the vehicle 18
Product information 9
Production options weight 417
PSI 417
Push-starting see Tow-startingQ
Quarter windows* see Power windows
R
Radio
AUDIO menu, Control system 164
Selecting station 164
Selecting station (satellite*) 164
Radio transmitters 370
Range (distance to empty) 185
Range of the sensors
Parktronic* 289
Reading lamp, front 149
Reading lamp, second-row 151
Rear automatic climate control 241, 244
Rear center console ashtray see Ashtrays
(Depending on vehicle configuration)
Rear climate control* 226
Rear door windows
Blocking operation 98
Rear fog lamp see Fog lamps
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587 Index
Rear lamps see Tail lamps
Rear panorama roof, Sunshade 212
Rear seat head restraints see
Head restraints
Rear towing eye 541
Rear view camera* 293
Rear view mirrors see Mirrors
Rear window defroster 212
Rear window wiper/washer 64
Rear windows see Power windows
Rear wiper blade 517
Recommended tire inflation
pressure 417
Recovery services, Stolen vehicle
(Tele Aid) 338
Refrigerant, Air conditioning 564
Refueling 374
Regular checks 376
Reminder, Seat belt see Seat belts, Telltale
Remote control
SmartKey 112
SmartKey with KEYLESS-GO* 115
Remote door unlock, Tele Aid 337Replacing bulbs 504
Additional turn signals, Exterior rear
view mirrors 511
Backup lamps 504, 505, 511
Brake lamps 504, 505, 511
Corner-illuminating front fog
lamps* 504, 505, 510
Fog lamp, Rear 504, 505, 511
Fog lamps, Front 504, 505, 510
High beam headlamps 504, 505, 508
License plate lamps 504, 505, 514
Low beam headlamps 504, 505, 507
Parking/standing lamps 504, 505,
509, 511, 513
Side marker lamps, Front 504, 505,
507, 510
Side marker lamps, Rear 504, 505,
511, 513
Tail lamps 504, 505, 511, 513
Turn signal lamps, Front 504, 505,
509
Turn signal lamps, Rear 504, 505,
511, 513Reporting safety defects 19
Research Octane Number see RON
Reset button, In instrument cluster 169
Reset tool
Active head restraints,
Depository 500
Residual heat and ventilation 225, 241
Reverse gear position, Automatic
transmission 189
Rims 417, 555
Roadside Assistance 12
Roadside Assistance button see Tele Aid
RON 375, 565
Roof rails 295
Rubber parts, Cleaning 432
Run Flat Indicator (Canada only) 396
S
Safety
Driving safety systems 101
Occupant safety 74
Reporting safety defects 19
Safety belts see Seat belts
Satellite radio* 164
Scissors-type vehicle jack 492, 493
Seat belt force limiter 89
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