Page 170 of 304

170 OperationAt the gas station
You will hear when the fuel cap is tight-
ened.
Close the fuel filler flap.
You should hear the latch close shut.
Check regularly and before a long trip1Windshield washer and headlamp
cleaning system*
More information on filling up the res-
ervoir can be found in the “Operation”
section (
page 179).
2Brake fluid
More information on brake fluid can be
found in the “Technical data” section
(
page 271).
3Coolant level
More information on coolant can be
found in the “Operation” section
(page 176).
4Engine oil level
More information on engine oil can be
found in the “Operation” section
(page 172).
Opening hood (
page 171).Coolant
For normal replenishing, use water (pota-
ble water quality). More information on
coolant can be found in the “Operation”
section (
page 176).
Exterior lamp switch (
page 83).
Vehicle lighting
Check function and cleanliness. For more
information on replacing light bulbs, refer
to page (
page 221) in the “Practical
hints” section.
Exterior lamp switch (
page 83).
Tire inflation pressure
More information on tire inflation pressure
can be found in the “Operation” section
(
page 181).
iLeaving the engine running and the fuel
cap open can cause the
?
lamp to
illuminate.
More information can be found in the
“Practical hints” section (
page 199).
Page 198 of 304

198 Practical hintsWhat to do if …?Problem
Possible cause
Suggested solution
3
(Canada only)
;
(except Canada)The red brake warning lamp
lights up while driving and you
hear a warning sound.
You are driving with the parking brake set.
Release the parking brake
(page 42).
3
(Canada only)
;
(except Canada)The red brake warning lamp
lights up while driving.
There is insufficient brake fluid in the reser-
voir.
Risk of accident! Carefully stop the
vehicle 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. Don’t 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 202 of 304

202 Practical hintsWhat to do if …?Problem
Possible cause
Suggested solution
#
The red charge indicator lamp
lights up while the engine is
running.
The battery was charged with a battery
charger or jump started.
Have the battery checked at a service
station.
The battery is no longer charging.
Possible causes:
alternator malfunctioning
one of the two poly-V-belts is broken
Stop immediately and check the
poly-V-belts.
If one is broken:
Do not continue to drive. Otherwise
the engine will overheat due to an in-
operative water pump which may re-
sult in damage to the engine. Notify
an authorized Mercedes-Benz Center.
If it is intact:
Drive immediately to the nearest
authorized Mercedes-Benz Center.
2
The yellow brake pad wear indi-
cator lamp lights up while brak-
ing.
The brake pads have reached their wear limit.
Have the brake pads replaced as soon
as possible.
!Brake pad thickness must be visually
checked by a qualified technican
at the intervals specified in the Service
booklet.
Page 203 of 304
203 Practical hints
What to do if …?
Problem
Possible cause
Suggested solution
.
The yellow exterior lamp failure
indicator lamp lights up while
applying the brake and stays on
until the engine is turned off.
One of the brake lights is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
.
The yellow exterior lamp failure
indicator lamp remains lit after
starting the engine or lights up
while driving.
One of the following lights is malfunctioning:
parking lamp
tail lamp
stop lamp
low beam head lamp
Replace the bulb as soon as possible
(page 221).
iAdditional lighting equipment, if not
properly installed (e.g. auxiliary head-
lamps etc.), could cause the failure in-
dicator monitoring unit to malfunction.
We therefore recommend that an au-
thorized Mercedes-Benz Center install
such equipment for you.
iIf an exterior lamp fails, the indicator
lamp will come on only when that lamp
is switched on.
Page 222 of 304

222 Practical hintsReplacing bulbsRear lamps Notes on bulb replacement
Use only 12-volt bulbs of the same type
and with the specified watt rating.
Switch lights off before changing a bulb
to prevent short circuits.
Always use a clean lint-free cloth when
handling bulbs.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not light
up, visit an authorized Mercedes-Benz
Center.
Have the LEDs and bulbs for the follow-
ing lamps replaced by an authorized
Mercedes-Benz Center.
Additional turn signals in the
exterior rear view mirrors
High mounted brake lamp
Xenon* lamps
Front fog lamps
Lamp
Type
7
Brake lamp
1154 / 32 cp
8
High mounted brake
lamp
LED
9
Backup lamp
1154 / 32 cp
10
Turn signal lamp
1156 NA
11
Tail, parking, stand-
ing and side marker
lamp
67 / 4 cp
12
License plate lamps
C5W
13
Rear fog lamp,
driver’s side
1155 / 32 cp
Warning!
G
Keep bulbs out of reach of children.
Bulbs and bulb sockets can be very hot.
Allow the lamp to cool down before
changing a bulb.
Halogen lamps contain pressurized gas.
A bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
Because of high voltage in xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
Page 225 of 304

225 Practical hints
Replacing bulbs
Side marker lamp bulb
Switch off the lights.
Carefully slide lamp towards front.
Remove rear end first.
Twist bulb socket counterclockwise
and pull out.
Gently push bulb into socket, turn
counterclockwise and remove.
Insert new bulb in socket, push in and
twist clockwise.
Reinstall bulb socket, push in and twist
clockwise.
To reinstall lamp, set rear end in
bumper and let front end snap into
place.
Replacing bulbs for rear lamps
Tail lamp assemblies
1Brake lamp
2Turn signal lamp
3Tail, parking and standing lamp, side
marker
4Backup lamp
5Rear fog lamp (driver’s side)
Switch off the lights.
Open trunk lid (
page 77).
Remove cover in right side panel.
Remove first aid kit (
page 206).
Remove cover in left side panel.
Turn bulb socket counterclockwise and
pull out.
Gently push bulb into socket, turn
counterclockwise and remove.
Insert new bulb in socket, push in and
turn clockwise.
Reinstall bulb socket, push in and turn
clockwise.
Close cover.
Page 248 of 304

248 Practical hintsJump startingThe battery is located in the engine com-
partment on the right hand side.
Make sure that the two vehicles do not
touch.
Turn off all electrical consumers, ex-
cept hazard warning flashers or work
lights.
Apply parking brake.
Shift selector lever to positionP (man-
ual transmission to Neutral).1Positive terminal of charged battery
2Positive terminal of discharged battery
3Negative terminal of discharged
battery
4Negative terminal of charged battery
Connect positive terminals1 and2 of
the batteries with the jumper cables.
Clamp cable to charged battery1 first.
Start engine of the vehicle with the
charged battery and run at idle speed.
Connect negative terminals3 and4 of
the batteries with the jumper cables.
Clamp cable to charged battery4 first.
Start the engine of the disabled vehi-
cle.
Now you can again turn on the electrical
consumers. Do not turn on the lights under
any circumstances.
Remove the jumper cables first from
negative terminals3 and4 of the bat-
teries and then from positive
terminals1 and2.
Have the battery checked at the near-
est authorized Mercedes-Benz Center.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries.
iVehicles with automatic transmission:
Do not tow-start vehicle.
Page 279 of 304

279 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Alignment bolt
Metal pin with thread. The centering
pin is an aid used when changing a tire
to align the wheel with the wheel hub.
BabySmart
TM
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the passenger seat. The sys-
tem will automatically deactivate the
passenger front airbag when such a
seat is properly installed (indicator
lamp
7
in the center console lights
up). See your authorized
Mercedes-Benz Center for availability.BabySmart
TM
compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger front airbag if a BabySmart
TM
compatible child seat is installed.
BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.
CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.
Collapsible tire
An especially compact spare tire that
must be inflated with a provided air
pump before using. It should only be
used to bring the vehicle to the nearest
service station.
Cruise control
Driving convenience system for auto-
matically maintaining the vehicle speed
set by the driver.