Page 301 of 409

300 Practical hintsWhat to do if ...Problem
Possible cause/consequence
Suggested solutions
3
(Canada only)
;
(USA only)
The red brake warning lamp
comes on while driving and
you hear a warning sound.
You are driving with the parking brake on.
Release the parking brake (
page 50).
There is a malfunction in the electrohy-
draulic brake system.
Read and observe messages in the multi-
function display (
page 307).
3
(Canada only)
;
(USA only)
The red brake warning lamp
comes on while driving.
There is insufficient brake fluid in the
reservoir.
Risk of accident! Carefully stop the vehicle in
a safe location and notify an authorized
Mercedes-Benz Center. Do not add brake
fluid! This will not solve the problem.
Warning!
G
Driving with the brake warning lamp illumi-
nated can result in an accident. Have your
brake system checked immediately if the
brake warning lamp stays on. Do not add
brake fluid before checking the brake sys-
tem.
Overfilling the brake fluid reservoir can re-
sult in spilling brake fluid on hot engine
parts and the brake fluid catching fire. You
can be seriously burned.
!If you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks.
Page 302 of 409

301 Practical hints
What to do if ...
Problem
Possible cause/consequence
Suggested solutions
ú
(USA only)
±
(Canada only)
The yellow engine malfunc-
tion indicator lamp comes on
while driving.
There is a malfunction in:
The fuel injection system
The ignition system
The emission control system
Systems which effect emissions
Such malfunctions may result in excessive
emissions values and may switch the en-
gine to its limp-home (emergency opera-
tion) mode.
Have the vehicle checked as soon as possi-
ble by an authorized Mercedes-Benz Center.
An on-board diagnostic connector is used by
the service station to link the vehicle to the
shop diagnostics system. It allows the accu-
rate identification of system malfunctions
through the readout of diagnostic trouble
codes. It is located in the front left area of
the footwell next to the parking brake.
Your gas tank is empty.
After refuelling, start, turn off and restart the
engine three or four times in succession.
The limp-home mode is canceled. You do not
need to have your vehicle checked.
The fuel cap is not closed tightly.
Check the fuel cap.
Page 319 of 409

318 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
2
Brake wear
Visit
workshop
The brake pads have reached
their wear limit.
Have the brake pads replaced immediately.
!Brake pad thickness must be visually
checked by a qualified technician at the
intervals specified in the Maintenance
Booklet.Warning!
G
Have brake pad replacement and other work
on the electrohydraulic brake system car-
ried out by qualified technicians only. Con-
tact your Mercedes-Benz Center for further
information. The electrohydraulic brake sys-
tem must be deactivated prior to working on
the system. High pressure is intermittently
built up in the system as part of its automat-
ic self-test. In addition, the system is auto-
matically activated when the vehicle is
unlocked by remote control, when the driver
or passenger door is opened, when the
SmartKey in the starter switch is turned to
position1, when the brake pedal is de-
pressed or when the parking brake is re-
leased.
Failure to deactivate the system prior to
maintenance will cause brake pistons to ex-
tend and brake fluid to leak, which may re-
sult in injuries (contusions and acid burns),
see “Electrohydraulic brake system”
(page 84).
Page 323 of 409
322 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
;
(USA only)
3
(Canada only)
Brakes overheated
Drive on, but with
even greater care
The brake system is overheated
due to an excessive load on the
brakes.
Relieve the load on the brake system.
Drive more smoothly and think ahead to avoid
unnecessary braking.
When driving down steep grades, shift into a
lower gear to use the engine’s braking power
(page 170).
Cautiously continue driving so that the air
stream will cool down the brakes.
Release
parking brake
You are driving with the parking
brake set.
Release the parking brake (
page 50).
Service brake
Visit
workshop
There are malfunctions, but the
electrohydraulic brake system
is operating normally.
Visit an authorized Mercedes-Benz Center im-
mediately.
Page 350 of 409
349 Practical hints
Replacing bulbs
Front lamps
Rear lamps
Lamp
Type
1
Additional turn signal
LEDs
2
Turn signal
PY, 21 W
3
Side marker lamp
WY 5 W
4
Parking lamp
W5W
5
Low and high beam
lamp
D2S, 35 W
6
High beam flasher
H7, 55 W
7
Front fog lamp
H3, 55 W
Lamp
Type
8
Brake/parking lamp
LEDs
9
Turn signal lamp
LEDs
a
Side marker lamp
P 21 W
b
High mounted brake
lamp
LEDs
c
License plate lamp
C 5 W
d
Rear fog lamp
P 21 W
e
Backup lamp
P 21 W
f
Reflector
-
Page 352 of 409

351 Practical hints
Flat tire
Flat tire
The vehicle is equipped with the TIREFIT
kit.Preparing the vehicle
Park the vehicle in a safe distance from
moving traffic on a hard, flat surface
when possible.
Turn on the hazard warning flashers.
Turn the steering wheel so that the
front wheels are in a straight ahead po-
sition.
Set the parking brake.
Move the gear selector lever to P.
Turn off the engine (
page 58).
Remove the SmartKey from the starter
switch.
Open the driver’s door.
Have any passenger exit the vehicle at
a safe distance from the roadway.
Sealing tires with TIREFIT kit
Small tire punctures, particularly those in
the tread, can be sealed with TIREFIT.
TIREFIT can be used in ambient tempera-
tures down to -4°F (-20°C).
Foreign objects (e.g. screws or nails)
should not be removed from the tire.
Take TIREFIT, the sticker, and the elec-
tric air pump out of the trunk.
!A wheel change should only be carried
out at an authorized Mercedes-Benz
Center. Otherwise there is a danger of
damaging the vehicle by jacking it up
incorrectly.
iOpen door only when conditions are
safe to do so.Warning!
G
Keep TIREFIT away from sparks, open flame
or heat source.
Do not smoke.
Warning!
G
TIREFIT is a limited repair device. TIREFIT
cannot be used for cuts or punctures larger
than approximately 0.16 in (4 mm) and tire
damage caused by driving with extremely
low tire inflation pressure, or on a flat tire, or
a damaged wheel.
Do not drive the vehicle under such circum-
stances.
Contact your nearest Mercedes-Benz
Center for assistance or call Roadside
Assistance. !After using TIREFIT, the tire inflation
pressure sensor may have to be re-
placed.
Page 401 of 409

400 IndexMultifunction display messages
ABS 309
ACL malfunction 312
Airbrake 315
Battery, Vehicle 315
Brake pads 318
Coolant 323
Cruise control 310
Differential 326
Display 327
Doors 327
Electrohydraulic brake system 319
Engine 328
Engine oil 328
ESP
®
310
Fuel system 329
Hood 329
Lamps 330
Parking brake 322
Reserve fuel 329
Seat belt 334
Service brake 322
SmartKey 329
Telephone 329
Tires 335
Trunk lid 341Washer fluid 341
Multifunction steering wheel 30, 118,
387
Button operation 118
Gearshift control, Automatic
transmission 174
N
Net, parcel 201
New vehicle break-in 230
Night security illumination 108, 134
Normal occupant weight 282
Number, Vehicle Identification
(VIN) 368, 389
O
Occupant distribution 282
Occupant safety
Airbags 63
BabySmart
TM airbag deactivation
system 75
Children and airbags 64
Children in the vehicle 72
Fastening the seat belts 46
Infant and child restraint systems 73
Seat belts 69
Octane number 388Odometer
Main 117
Trip 115
Oil level see Engine oil, Checking level
Oil see Engine oil
One-touch gearshifting, Automatic
transmission 168
Operating safety
Audio system 143
Vehicle 20
Operator’s manual 342
Outside temperature see Displays
Overdue maintenance service 290
Overhead control panel 33
Overspeed range, Engine 115, 388
P
Panic alarm 78
Parcel net in trunk 201
Parking 57, 234
Parking brake 32
Engaging 57
Message in the multifunction
display 322
Releasing 50
Page 402 of 409

401 Index
Parking lamps 105
Message in the multifunction
display 332
Replacing bulbs 348
Parts service 366
PASSENGER AIRBAG OFF
Indicator lamp 75, 306
Passenger compartment 238
Passenger safety see Occupant safety
Pedals 231
Performance enhancement system,
Airbrake 87
Phone see Telephone
Poly-V-belt drive 388
Layout 369
Power assistance 232
Power outlet 203
Power train 388
Power washer 293
Power windows 193
Cleaning 294
Operating 193
Synchronizing 195
Practical hints 296
Premium unleaded gasoline 379Problems
While driving 56
With the vehicle 21
Product information 13
Production options weight 282
Program mode selector switch, Automatic
transmission 173, 388
PSI 283
Push starting 356
R
Radio
Operation 149
Selecting stations 123
Radio transmitters 238
Range (distance to empty) 139
Reading lamp 112
Rear fog lamp see Fog lamps
Rear lamps see Tail lamps
Rear view mirrors see Mirrors
Rear window defroster 181
Recommended tire inflation
pressure 283
Recovery services, Stolen vehicle
(Tele Aid) 215
Redial memory 142
Refrigerant, Air conditioning 378Refueling 241
Regular checks 242
Remote control, SmartKey 96
Remote door unlock, Tele Aid 215
Replacing bulbs 348
Reporting safety defects 22
Research Octane Number see RON
Reset button, in Instrument cluster 113,
289
Residual heat utilization 190
Restraint systems 62
Airbags 62, 63
Children in the vehicle 72
Emergency Tensioning Device
(ETD) 62, 72
Seat belts 62, 69
Rims 283, 371
Roadside Assistance 16, 211
RON 241, 388
Roof rack 227
S
Safety
Driving safety systems 79
Occupant 62
Reporting defects 22
Safety belts see Seat belts