421 Practical hints
Flat tire
Screw the air pump’s air hose5 onto
flange6 of the TIREFIT container.
Stick TIREFIT container1 upside
down into notch3 of the electric air
pump.
7Tire valve
8Electric air pump switch
9Pressure gauge and vent screw
aFiller hose
Unscrew the valve cap from tire
valve7.
Screw filler hosea onto tire valve7.
Close vent screw9on air hose4.
Insert electrical plug4 into the vehi-
cle cigarette lighter socket
(page 258).
Turn the SmartKey in the starter switch
to position1 (
page 36).
Press I on electric air pump switch8.
The electric air pump should now
switch on and inflate the tire.After 5 minutes, the pressure gauge must
display at least 26 psi (1.8 bar). The air
hose can become hot during inflation.
Please exercise appropriate caution.
If this tire inflation pressure is not at-
tained, turn off the electric air pump,
detach the filler hose from the tire
valve, and drive vehicle back and forth
very slowly approximately 30 ft (10 m).
This serves to better distribute the
TIREFIT sealant material inside the tire.
Unscrew the air pump’s air hose5
from flange6 of the TIREFIT contain-
er.
Screw air hose5onto tire valve7.
Inflate the tire again.
Warning!
G
Observe safety instructions on air pump la-
bel.
!Do not operate the electric air pump
longer than 8 minutes without interrup-
tion. Otherwise it may overheat.
You may operate the air pump again af-
ter it has cooled off.
426 Practical hintsFlat tire
Unscrew the upper-most wheel bolt
and remove.
Replace this wheel bolt with alignment
bolt1 supplied in the tool kit.
Remove the remaining bolts.
Remove the wheel.Mounting the spare wheel
Clean contact surfaces of wheel and
wheel hub.
Guide the spare wheel onto the align-
ment bolt and push it on.
Insert wheel bolts and tighten them
slightly.
!Do not place wheel bolts in sand or dirt.
This could result in damage to the bolt
and wheel hub threads.
Warning!
G
Vehicles with collapsible tire:
Inflate collapsible tire only after the wheel is
properly mounted.
Inflate the collapsible tire using the electric
pump (
page 427)
before
lowering the
vehicle.
!To avoid paint damage, place wheel flat
against hub and hold it there while in-
stalling first wheel bolt.
Warning!
G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact
an authorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident. Be
sure to use the correct wheel bolts.
427 Practical hints
Flat tire
Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.
Vehicles with Minispare wheel:
Continue the procedure by following
the instructions under “Lowering the
vehicle” (
page 429).
Vehicles with collapsible tire:
Continue the procedure by following
the instructions under “Inflating the
collapsible tire” and then “Lowering the
vehicle” (
page 429).Inflating the collapsible tire
Take the electric air pump out of the
trunk (
page 398).
1Flap
2Air pump switch
3Electrical plug
4Air hose with pressure gauge and vent
screw
5Union nut
Open flap1 on the air pump.
Pull out electrical plug3 and air hose
with pressure gauge4.
Make sure the vent screw on air hose
4 is closed.
Remove the valve cap from the tire
valve.
Warning!
G
Only use Genuine equipment
Mercedes-Benz wheel bolts. Other wheel
bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could fall off the jack.
!Do not lower the vehicle before inflat-
ing the collapsible tire. Otherwise the
rim may be damaged.Warning!
G
Observe instructions on air pump label.
428 Practical hintsFlat tire
Screw union nut5 onto the tire valve.
Insert electrical plug3 into vehicle
cigarette lighter socket (
page 258).
Turn the SmartKey in the starter switch
to position1.
or
Press the KEYLESS-GO* start/stop
button on the gear selector lever once
without depressing the brake pedal.
Press I on electric air pump switch2.
The electric air pump should now
switch on and inflate the tire.
Inflate the tire to approximately 51 psi
(3.5 bar).
This takes about 5 minutes for the col-
lapsible tire. Air hose4 and union
nut5 can become hot during infla-
tion. Exercise proper caution to avoid
burning yourself when using the equip-
ment.
Press 0 on electric air pump switch2.
Turn the SmartKey in the starter switch
to position0.
or
Press KEYLESS-GO* start/stop button
on the gear selector lever twice without
depressing the brake pedal.
The electric air pump should now be
switched off.
If the tire inflation pressure is above
51 psi (3.5 bar), release excess tire in-
flation pressure using the vent screw.
Detach the electric air pump.
Stow electrical plug3 and air hose4
behind flap1 and place the air pump
back in the trunk.
!Do not operate the air pump longer
than 8 minutes without interruption.
Otherwise it may overheat.
You may operate the air pump again
after it has cooled off.
Warning!
G
Follow recommend inflation pressures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout)
because they are more likely to become
punctured or damaged by road debris,
potholes, etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
436 Practical hintsJump starting
Always make sure the jumper cables
are not on or near pulleys, fans or other
parts that move when the engine is
started or running.
The main battery is located in the trunk un-
derneath the luggage box (
page 401).
Make sure the two vehicles do not
touch.
Turn off all electrical consumers.
Apply parking brake.
Shift gear selector lever to positionP.
Connect positive terminals1 and3
of the batteries with the jumper cable.
Clamp cable to charged battery3
first.
1Positive terminal of discharged battery
2Negative terminal of discharged bat-
tery
3Positive terminal of charged battery
4Negative terminal of charged battery
Start engine of the vehicle with the
charged battery and run at idle speed.
Connect negative terminals4 and2
of the batteries with the jumper cable.
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 terminals2 and4 and then
from positive terminals1 and3.
Now you can turn on the lights.
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
(page 299).
!Never invert the terminal connections!
iThe message
Malfunction - electric
consumers switched off
may appear
in the instrument cluster. It will disap-
pear as soon as the battery is suffi-
ciently charged.
465 Technical data
Fuels, coolants, lubricants etc.
Premium unleaded gasoline
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to
engine performance problems such as:
Warm-up hesitation
Unstable idle
Knocking/pinging
Misfire
Power loss
Warning!
G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious inju-
ry. Whenever you are around gasoline, avoid
inhaling fumes and skin contact, extinguish
all smoking materials. Never allow sparks,
flame or smoking materials near gasoline!
!To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
gasoline is not available and low octane
fuel is used, follow these precautions:
Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible
Avoid full throttle driving and abrupt
acceleration
Do not exceed an engine speed of
3 000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage
Do not exceed
2/3 of maximum
accelerator pedal position if the
vehicle is fully loaded or operating
in mountainous terrain
472 Technical termsBar
(
page 332)
BAS
(Brake 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.
Bead
(
page 332)
Bi-Xenon headlamps*
Headlamps which use an electric arc as
a light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service
center which can help you with any
questions about your vehicle and pro-
vide assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control
vehicle 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.Cold tire inflation pressure
(
page 332)
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.
COMAND
(Cockpit M
anagement and D
ata
System)
Information and operating center for
vehicle sound and communications
systems, including the radio and navi-
gation system, as well as other optional
equipment (CD changer, telephone,
etc.).
482 IndexControl system submenus
Convenience 168
Instrument cluster 160
Lighting 164
Time/Date 162
Vehicle 168
Convenience submenu 168
Activating easy-entry/exit
feature* 168
Setting parking position for exterior
rear view mirror 169
Coolant
Checking level 297
Messages in display 378, 379, 380
Temperature 289
Temperature gauge 145
Warning lamp 357
Cruise control 222, 473
Canceling 224
Driving downhill 223
Driving uphill 223
Fine adjustment 225
Lever 231
Saving current speed 223
Setting speeds 225Cruise control lever 222, 231
Cup holders 255
Cleaning 349
Curb weight 332
Customer Assistance Center see CAC
D
Date display, setting 163, 164
Daytime running lamp mode 136
Setting 164
Deceleration
With Distronic* 230
Defogging windshield 206
Delayed switch-off
Interior lighting 167
Department of Transportation see DOT
Dialing
A number (telephone) 174
Difficulties
While driving 56
With starting 51
Digital speedometer 153
Direction of rotation (tires) 304Displays
Digital speedometer 153
Distronic* 228
Maintenance service indicator 339
Multifunction display 147
Selecting 161
Symbol messages 373
Text messages 365
Vehicle status message memory 156
Distance
Decreasing in Distronic* 235
Increasing in Distronic* 234
Warning function 235
Distance to empty (range)
Trip computer 171
Distronic* 226, 473
Activating/deactivating 231
Cleaning system sensor 346
Distance warning function 235
Driving hints 236
Intermittent warning sound 235
Menu 230
Messages in display 366
Sensor cover 346
Symbol in multifunction display 155
Warning and indicator lamps 229