Page 592 of 705
591 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Gas cap open
A loss of pressure has been detected in the
fuel system. The fuel cap may not be closed
properly or the fuel system may be leaky.
Check the fuel cap (
page 489).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an autho-
rized Mercedes-Benz Center.
You are driving with the hood open.
Stop your vehicle as soon as it is safe to do
so.
Close the hood (
page 493).
There is otherwise danger of an accident.
Page 624 of 705

623 Practical hints
Replacing bulbs
Notes on bulb replacement
Only use 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
come on, visit an authorized
Mercedes-Benz Center.
Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Center.
the Bi-Xenon lamps
the front turn signal lamps
the front fog lamps
the additional turn signal lamps in the
exterior rear view mirrors
the parking and standing lamps
the front side marker lamps
the high mounted brake lamps
the brake, tail and rear standing lamps
the rear side marker lamps
the rear fog lamp
the rear turn signal lamps
the rear side marker lamps
the license plate lamps
Replacing bulbs for front lamps
Before you start to replace a bulb for a
front lamp, do the following first:
Turn the exterior lamp switch to M
(page 342).
Open the hood (
page 492) (except
for side marker lamps).
Warning!
G
Keep bulbs out of reach of children.
Bulbs and bulb sockets can be very hot. Al-
low 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.
i
Have the headlamp adjustment checked
regularly.
Page 628 of 705

627 Practical hints
Replacing wiper blades
Replacing wiper blades
Placing wiper arms in vertical positionWiper blades in vertical positionVehicles with SmartKey
Turn SmartKey in starter switch
position1.
Turn combination switch to wiper
settingu (
page 351).
With wiper arm in vertical position, turn
the SmartKey in starter switch to
position0.
Warning!
G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch (vehi-
cles with KEYLESS-GO*: Make sure the
vehicle’s on-board electronics have
status0) before replacing a wiper blade.
Otherwise, the wiper motor could suddenly
turn on and cause injury. Warning!
G
Wiper blades are components that are sub-
ject to wear and tear. Change the wiper
blades twice a year, preferably in the spring
and fall. Otherwise the windows will not be
properly wiped. As a result, you may not be
able to observe surrounding traffic condi-
tions and could cause an accident.
!
To avoid damage to the hood:
The wiper arms should only be folded for-
ward when in the vertical position.
Never open the hood when the wiper arm is
folded forward.
!
Hold on to the wiper when folding the wiper
arm back. If released, the force of the impact
from the tensioning spring could crack the wind-
shield.
Do not allow the wiper arms to contact the wind-
shield glass without a wiper blade inserted.
Make certain that the wiper blades are properly
installed. Improperly installed wiper blades may
cause windshield damage.
For your convenience, we recommend that you
have this work carried out by an authorized
Mercedes-Benz Center.
Page 638 of 705

637 Practical hints
Batteries
Switching off vehicle’s internal electri-
cal functions
Shift the automatic transmission toP.
Turn off all electrical consumers.
Turn SmartKey in starter switch to po-
sition 0.
Turn SmartKey in starter switch to po-
sition 1.
Wait for 30 seconds.
The vehicle’s internal electrical func-
tions are switched off.
Turn SmartKey in starter switch to po-
sition 0.Disconnecting starter battery
Open the hood (
page 492).
Use a 10-mm open-end wrench to dis-
connect the battery negative lead.
Remove cover2 (
page 636) from
the positive terminal.
Disconnect the battery positive lead.
Removing starter battery
Pull out the battery ventilation hose
from the battery (depending on battery
arrangement in your vehicle model, the
ventilation hose is located either on the
left or right side of the battery).
Fold bar on starter battery up.
Take out the starter battery.
Charging battery
i
Vehicles with KEYLESS-GO: remove the
KEYLESS-GO button (
page 316) and use the
SmartKey with KEYLESS-GO like a normal
SmartKey.
!
Do not remove the SmartKey!
i
For your convenience, have the starter bat-
tery removed by a Mercedes-Benz Center.
Warning!
G
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the bat-
tery in its installed position. Contact an au-
thorized Mercedes-Benz Center for
information and availability. Charge battery
in accordance with the separate instruc-
tions for the accessory battery charger.i
Have the batteries charged by a
Mercedes-Benz Center. If you charge the batter-
ies yourself, follow the operating instructions for
your charging device.
Page 641 of 705
640 Practical hintsJump startingJump starting should only be performed on
the starter battery. The starter battery is
located in the engine compartment on the
passenger side (
page 634).
Make sure the two vehicles do not
touch.
Secure vehicle in place with electric
parking brake.
Shift the automatic transmission toP.
Turn off all electrical consumers, ex-
cept hazard warning flashers or work
lights.
Open the hood (
page 492).
Start the engine of the vehicle with the
charged battery and run at idle speed.1Positive terminal of your vehicle’s
battery
2Positive terminal of other vehicle’s
battery
3Negative terminal of other vehicle’s
battery
4Negative clamp
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 634).
i
Vehicles with KEYLESS-GO: remove the
KEYLESS-GO button (
page 316) and use the
SmartKey with KEYLESS-GO like a normal
SmartKey.
Page 688 of 705

687 Index
G
Garage door opener 470
Gasoline see Fuel
GAWR 526
Gear range 673
Automatic transmission 372
Limiting 372
Shifting into optimal 376
Gear selector lever 367
Gearshift pattern 367
Messages in display 562, 566, 567,
569, 610
Position 369
Shifting procedure 369
Transmission position 370
Global Positioning System see GPS
Glove box 448
Gloves, Vehicle tool kit 611
GPS 673
Reception (COMAND) 145
Tele Aid 462
Gross Axle Weight Rating see GAWR
Gross Vehicle Weight Rating see GVWR
Gross Vehicle Weight see GVW
GVW 526
GVWR 527H
Hands-free microphone 37
Hard plastic trim items, Cleaning 542
Hazard warning flasher 348
Head restraints 324
Adjustment 324
Folding back and placing upright rear
head restraints 325
Front seat 324
Luxury active head restraints
(S600 only) 59
Rear seat 325
Resetting activated luxury active head
restraints (S600 only) 618
Headlamp cleaning system 346, 498
Washer fluid 662, 668
Headlamps
Automatic control 343
Automatic headlamp mode 255
Cleaning lenses 537
Cleaning system 498
Manual headlamp mode 255
Messages in display 595
Refilling washer fluid 499
Headliner and shelf below rear window,
Cleaning and care of 542Heated seats* 322
Heated steering wheel* 331
Height adjustments
Vehicle level (ABC*) 403
High beam
Replacing bulbs 622
High beam flasher 347
High beam headlamps
Switching on 346
High mounted brake lamp 622
Hood 492
Message in display 591
Opening 492
Horn 27
Hydroplaning 483
I
Identification labels 652
Identification Number, Vehicle (VIN) 652
Ignition 315, 317
Switching on 315
Switching on, KEYLESS-GO* 317
Immobilizer 75
Indicator lamps see Lamps, indicator and
warning
Individualization
Voice Control* 302
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