Page 539 of 801

538 Controls in detailUseful features
Power outlet
The power outlet is located in the rear cen-
ter console.
Switch on the ignition (
page 370).
Flip up cover1 and insert electrical
plug (cigarette lighter type).
Floormats*
!
The lighter socket can be used to accommo-
date 12V DC electrical accessories (up to a max-
imum of 85 W) designed for use with the
standard “cigarette lighter” plug type. Keep in
mind, however, that connecting accessories to
the lighter socket (for example extensive con-
necting and disconnecting, or using plugs that do
not fit properly) can damage the lighter socket.
With the socket damaged, the lighter may no
longer be able to be placed in the heating
(pushed-in) position, or the lighter may pop out
too early with the lighter not hot enough.
To help avoid damaging the cigarette lighter
socket, we recommend connecting 12V DC elec-
trical accessories designed for use with a stan-
dard “cigarette lighter” plug type.
i
Operation of the rear door lighters is only
possible, if the override switch (
page 64) is de-
activated.
i
If the engine is off and the cigarette lighter is
being used extensively, the vehicle battery may
become discharged.
i
The power outlet can be used to
accommodate 12V DC electrical accessories
(e.g. air pump, auxiliary lamps) up to a maximum
of 180 W.
If the engine is off and the outlet is being used
extensively, the vehicle battery may become dis-
charged.
Warning!
G
Whenever you are using floormats, make
sure there is enough clearance and that the
floormats are securely fastened.
Floormats should always be securely fas-
tened using the eyelets and the retainer
pins.
Before driving off, check that the floormats
are securely in place and adjust them if nec-
essary. A loose floormat could slip and
hinder proper functioning of the pedals.
Do not place several floormats on top of
each other as this may impair pedal move-
ment.i
To install or remove the floormat more easi-
ly, move the driver’s seat or front passenger seat
as far to the rear as possible (
page 373).
Page 573 of 801

572 OperationAt the gas stationCheck regularly and before a long tripExample illustration from S 5501Coolant level
2Brake fluid
3Windshield washer and headlamp
cleaning systemWindshield washer system and head-
lamp cleaning system
For more information on refilling the wash-
er reservoir, see “Windshield washer sys-
tem and headlamp cleaning system”
(
page 580).
Coolant
For more information on coolant, see
“Coolant level” (
page 579) and see “Fu-
els, coolants, lubricants, etc.”
(
page 764).
Brake fluid
For information on brake fluid, see “Brake
fluid” (
page 769).Engine oil level
For more information on engine oil, see
“Engine oil” (
page 575).
Vehicle lighting
Check function and cleanliness. For more
information on replacing light bulbs, see
“Replacing bulbs” (
page 714).
For more information, see “Lighting”
(
page 399).
Tire inflation pressure
For information on tire inflation pressure,
see “Checking tire inflation pressure”
(page 592).
i
Opening the hood (
page 573).
!
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 immediately. Notify an
authorized Mercedes-Benz Center immediately.
Do not add brake fluid as this will not solve the
problem. For more information, see “Practical
hints” (page 631) and (
page 664).
Page 695 of 801
694 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Night View Assist
Lights ON or AUTO,
Not in R Gear
You have tried to switch on Night View As-
sist* but the light switch is not set to *
or B.
In addition, the automatic transmission is in
reverse gearR.
Turn the exterior lamp switch to * or
B (
page 399).
Shift the automatic transmission to park
positionP, neutral positionN or drive
positionD (
page 426).
Night View Assist
Only When
It Is Dark
You have tried to switch on Night View As-
sist* by daylight.
You can only switch on Night View Assist* when
it is dark.
Engine Oil Level Low
Stop Vehicle
Turn Engine Off
S 600 and S 65 AMG only:
There is no oil in the engine. There is a dan-
ger of engine damage.
Carefully bring the vehicle to a halt as soon
as it is safe to do so in a safe location.
Engage the electronic parking brake
(page 422).
Turn off the engine.
Add engine oil (
page 578) and check the
engine oil level (page 575).
Page 786 of 801

785 Index
K
Key, Mechanical 708
Loss of 366
Key, SmartKey 358
Battery check lamp 358, 360
Factory setting 359
Global locking and unlocking 359
Lock button 358
Locking and unlocking 358
Loss of 366
Messages in display 685
Opening button for trunk 358
Panic button 66
Remote control 358
Restoring to factory setting 361
Selective setting 360
Starting the engine 417
Switching on ignition with 370
Turning off engine 425
Unlock button 358Key, SmartKey with KEYLESS-GO* 361
Battery check lamp 361, 365
Closing, Trunk 511
Factory setting 364
Global locking and unlocking 364
Important notes on using
KEYLESS-GO* 362
Lock button 361
Locking and unlocking 361
Loss of 366
Messages in display 684
Opening button for trunk 361
Panic button 66
Remote control 361
Restoring to factory setting 366
Selective setting 365
Starting the engine 417
Switching on ignition with 372
Turning off engine 425
Unlock button 361
Kickdown 433
Kilopascal 607L
Labels 748
Certification 748
Emission control information 749
Tire and Loading Information 586
Vacuum line routing diagram 749
Lamp bulbs, exterior 714
Lamps, exterior
Front 715
Light sensor 688
Rear 715
Lamps, indicator and warning
ABS 29, 67, 628
Air bag Off 46
Battery check lamp (SmartKey with
KEYLESS-GO*) 365
Battery check lamp (SmartKey) 360
Brake warning lamp 29
Brakes 629
Combination low tire pressure* mal-
function telltale 29, 638
Distance warning lamp* 29, 634
DISTRONIC Plus* 29, 454, 634
Electronic parking brake 29, 630
Engine diagnostics 29, 632
Engine malfunction 29, 632