lamps/low-beam headlamps go out after
three minutes.
When the engine is running, the vehicle is
stationary and in high ambient light
brightness: if you turn the light switch
to T, the daytime running lamps and the
parking lamps are switched on.
If
the
engine is running and you turn the light
switch to L, the manual settings take
precedence over the daytime running lamps.
Daytime running lamps in the USA 1W
Left-hand standing lamps
2X Right-hand standing lamps
3T Parking lamps, license plate and
instrument cluster lighting
4Ã Automatic headlamp mode/daytime
running lamps
5L Low-beam/high-beam headlamps
BR Fog lamps (vehicles with front fog
lamps)
In the USA, the daytime running lamps are
deactivated upon delivery from the factory.
X To activate: activate the daytime running
lamps function in the on-board computer
(Y page 216).
X Turn the light switch to Ã.
With the
engine running: depending on the
ambient light, the daytime running lamps or
the low-beam headlamps are switched on.
When the low-beam headlamps are
switched on, the L indicator lamp in the
instrument cluster lights up. If the engine is running and you turn the light
switch to L, the manual settings take
precedence over the daytime running lamps.
Automatic headlamp mode
G
WARNING
If the light switch is set to Ã,
the
low-beam
headlamps will not come on automatically if
it is foggy. This could endanger you and
others. Therefore, turn the light switch to
L in fog.
The automatic headlamp feature is only an
aid. The driver is responsible for the vehicle's
lighting at all times. 1W
Left-hand standing lamps
2X Right-hand standing lamps
3T Parking lamps, license plate and
instrument cluster lighting
4Ã Automatic headlamp mode/daytime
running lamps
5L Low-beam/high-beam headlamps
BR Fog lamps (vehicles with front fog
lamps)
X To switch on automatic headlamp
mode: turn the light switch to Ã.
SmartKey in
position 1 in the ignition lock:
the parking lamps are switched on or off
automatically depending on the brightness
of the ambient light.
With the engine running: if you have
activated the daytime running lamps
function in the on-board computer, the
daytime running lamps or the low-beam 110
Exterior lighting
Lights and windshield wipers
headlamps are switched on or off
automatically
depending
on the brightness
of the ambient light.
When the low-beam headlamps are
switched on, the L indicator lamp in the
instrument cluster lights up.
Front fog lamps G
WARNING
If you suspect that driving conditions will be
foggy, turn
the light switch to L before you
start your journey. Your vehicle may
otherwise not be visible and you could
endanger yourself and others. 1W
Left-hand standing lamps
2X Right-hand standing lamps
3T Parking lamps, license plate and
instrument cluster lighting
4Ã Automatic headlamp mode/daytime
running lamps
5L Low-beam/high-beam headlamps
BR Fog lamps (vehicles with front fog
lamps)
X To switch on the front fog lamps: turn
the SmartKey
in the ignition lock to position
2 or start the engine.
X Turn the light switch to L or Ã. X
Press the N button.
The green N indicator lamp in the
instrument cluster lights up.
X To switch off the front fog lamps: press
the N button.
The green N indicator lamp in the
instrument cluster goes out.
Only vehicles with front fog lamps have the
fog lamps function.
Standing lamps 1W
Left-hand standing lamps
2X Right-hand standing lamps
3T Parking lamps, license plate and
instrument cluster lighting
4Ã Automatic headlamp mode/daytime
running lamps
5L Low-beam/high-beam headlamps
BR Fog lamps (vehicles with front fog
lamps)
If you switch on the standing lamps, the
parking lamps on one side of the vehicle are
lit dimly.
X To switch on the standing lamps: the
SmartKey is not in the ignition lock or it is
in position 0.
X Turn the light switch to W (left-hand
side
of the vehicle) or X (right-hand side of
the vehicle). Exterior lighting
111
Lights and windshield wipers Z
Combination switch
Turn signals :
High-beam headlamps
; Turn signal, right
= High-beam flasher
? Turn signal, left
X To indicate briefly:
press the
combination
switch briefly to the pressure point in the
direction of arrow ; or ?.
The corresponding turn signal flashes three
times.
X To indicate: press the
combination switch
beyond the pressure point in the direction
of arrow ; or ?.
High-beam headlamps :
High-beam headlamps
; Turn signal, right
= High-beam flasher
? Turn signal, left X
To
switch on the high-beam headlamps:
turn the SmartKey in the ignition lock to
position 2 or start the engine.
X Turn the light switch to L or Ã.
X Press the combination switch beyond the
pressure point in the direction of
arrow :.
In the à position, the high-beam
headlamps are only switched on when it is
dark and the engine is running.
The K indicator lamp in the instrument
cluster lights up when the high-beam
headlamps are switched on.
X To switch off the high-beam
headlamps: move the
combination switch
back to its normal position.
The K indicator lamp in the instrument
cluster goes out.
High-beam flasher :
High-beam headlamps
; Turn signal, right
= High-beam flasher
? Turn signal, left
X To switch on: turn the SmartKey in the
ignition lock to position 1
or 2 or start the
engine.
X Pull the combination switch in the direction
of arrow =.112
Exterior lighting
Lights and windshield wipers
Switching Adaptive Highbeam Assist
on/off
:
High-beam headlamps
; Turn signal, right
= High-beam flasher
? Turn signal, left
X To activate: activate the Adaptive
Highbeam Assist function using the on-
board computer ( Y page 217).
X Turn the light switch to Ã.
X Press the combination switch beyond the
pressure point in the direction of
arrow : (Y page 112).
The _ indicator lamp in the
multifunction display lights up if it is dark
and the
light sensor activates the low-beam
headlamps.
If you are driving at speeds above
approximately 28 mph (45km/h):
the headlamp range is set automatically
depending on the distance between the
vehicle and other road users.
If you are driving at speeds above
approximately 35 mph (55km/h) and no
other road users have been detected:
the high-beam headlamps are switched on
automatically. The K indicator lamp in
the instrument cluster also lights up.
If you are driving at speeds below
approximately 30 mph (45km/h) or other
road users have been detected or the roads
are adequately lit:
The high-beam headlamps are switched off
automatically. The K indicator lamp in the instrument cluster goes out. The
_
indicator lamp in the multifunction display
remains lit.
X To deactivate: move the combination
switch back to its normal position.
The _ indicator lamp in the instrument
cluster goes out. Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
X Switch on the lights and drive off.
The level of fogging diminishes, depending
on the length of the journey and the
weather conditions (humidity and
temperature).
If the level of fogging does not diminish:
X Have the headlamps checked at a qualified
specialist workshop. Interior lighting
Overview of interior lighting
Example
:
p Switches the left-hand reading lamp
on/off
; c
Switches the interior lighting on
= | Switches the interior lighting/
automatic interior lighting control off Interior lighting
115
Lights and windshield wipers Z
The Start/Stop button can be removed from
the ignition lock. Then, you can insert the
SmartKey into the ignition lock.
i
You do
not have to remove the Start/Stop
button from the ignition lock when you
leave the vehicle. You should, however,
always take the SmartKey with you when
leaving the vehicle. As long as the
SmartKey is in the vehicle:
R the vehicle can be started using the
Start/Stop button and
R electrically powered equipment can be
operated.
i The engine can be turned off while the
vehicle is in motion by pressing and holding
the Start/Stop button for three seconds.
This function operates independently from
the ECO start/stop automatic engine
switch-off function.
Key positions with KEYLESS-GO :
Start/Stop button
; Ignition lock
X Insert Start/Stop button : into ignition
lock ;.
i When you insert Start/Stop button :
into ignition lock ;, the system needs
approximately two seconds recognition
time. You can then use Start/Stop
button :. Start/Stop button
=
USA only
? Canada only
Activating power supply
X If Start/Stop button : has not yet been
pressed, this
corresponds to the SmartKey
being removed from the ignition.
X Press Start/Stop button : once.
The power supply is switched on. You can
now activate the windshield wipers, for
example.
i The power supply is switched off:
R when the driver's door is open and
R you press Start/Stop button : twice
when in this position
Switching on the ignition
X Press Start/Stop button : twice.
The ignition is switched on.
i The ignition is switched off:
R when the driver's door is open and
R you press Start/Stop button : once
when in this position
As soon
as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. If an indicator lamp does not go out after
starting the engine or lights up while driving,
there may be a technical problem
(Y page 257). 136
Driving
Driving and parking
Problems with the engine
Problem Possible causes/consequences and
M Solutions
The engine does not
start. The HOLD function is activated.
X
Deactivate the HOLD function (Y page 175).
X Try to start the engine again. The engine does not
start.
The
starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Turn
the SmartKey back to position
0
in
the ignition lock before
attempting to start the engine again.
or
X Press the Start/Stop button repeatedly until all indicator lamps
in the instrument cluster go out.
X Try to start the engine again (Y page 137). Avoid excessively
long and
frequent attempts to start the engine, as this will drain
the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak
or discharged.
X
Jump-start the vehicle (
Y page 516).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. The engine is not
running smoothly and
is misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it.142
Driving
Driving and parking
For further information on fuel and fuel quality
(Y page 561).
Refueling
Fuel filler flap :
To open the fuel filler flap
; To insert the fuel filler cap
= Tire pressure table
? Fuel type to be used
The fuel filler flap is unlocked or locked
automatically when you open or close the
vehicle with
the SmartKey or using KEYLESS-
GO.
The position of the fuel filler cap is displayed
8 in the instrument cluster. The arrow
next to the filling pump indicates the side of
the vehicle.
Opening X
Switch off the engine.
X Remove the SmartKey from the ignition
lock.
X KEYLESS-GO: open the driver’s door.
This corresponds to SmartKey position 0,
"key removed".
The driver’s door can be closed again.
X Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap opens slightly.
X Open the fuel filler flap fully.
X Turn the fuel filler flap counter-clockwise
and remove it. X
Insert the fuel filler cap into the holder
bracket on the inside of filler flap ;.
X Completely insert the filler neck of the fuel
pump nozzle into the tank and refuel.
X Only fill the tank until the pump nozzle
switches off.
i Do not add any more fuel after the pump
stops filling for the first time. Otherwise,
fuel could leak out.
Closing X
Place fuel filler cap on the fuel filler neck
and turn clockwise until it engages.
X Close the fuel filler flap.
i Close the
fuel filler flap before locking the
vehicle.
i If you drive with the fuel filler cap open,
the reserve fuel warning lamp flashes. In
addition, the ; engine diagnostics
warning lamp may light up. A message
appears in the multifunction display
(Y page 240).
For further information on warning and
indicator lamps in the instrument cluster,
see ( Y page 263). Refueling
153
Driving and parking Z
Vehicles with automatic transmission
X
Vehicles with a SmartKey: move the
transmission to position P.
X Turn the SmartKey to position 0 in the
ignition lock and remove it.
The immobilizer is activated.
X Vehicles with KEYLESS-GO: press the
Start/Stop button (
Y page 135).
The engine stops and all the indicator
lamps in the instrument cluster go out.
When the driver's door is closed, this
corresponds to key position 1. When the
driver's door is open, this corresponds to
key position 0(Y page 135).
If you try to switch off the engine when the
transmission is not in position P, a message
appears in
the multifunction display. A signal
sounds.
i The engine can be turned off while the
vehicle is in motion by pressing and holding
the Start/Stop button for three seconds.
This function operates independently from
the ECO start/stop automatic engine
switch-off function. Electric parking brake
General notes G
WARNING
When leaving the vehicle, always remove the
SmartKey from
the starter switch, take it with
you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Children could
release the parking brake and/or shift the
automatic transmission out of park position
P, either of which could result in an accident
and/or serious personal injury.
i The electric parking brake performs a
function test at regular intervals while the
engine is switched off. The sounds that can
be heard while this is occurring are normal. Engaging and releasing manually
X
To engage: push handle :.
The red F (USA only) or ! (Canada
only) indicator lamp in the instrument
cluster lights up.
i The electric parking brake can also be
applied when the SmartKey is removed.
X To release: switch on the ignition.
X Pull handle :.
The red F (USA only) or ! (Canada
only) indicator lamp in the instrument
cluster goes out.
i The electric parking brake can only be
released:
R if the SmartKey is in position 1 in the
ignition lock or
R if the ignition was switched on using the
Start/Stop button.
Applying automatically The electric parking brake is applied
automatically:
R
if DISTRONIC PLUS brings the vehicle to a
standstill or
R if the
HOLD function is keeping the vehicle
stationary
In addition, at least one of the following
conditions must be fulfilled: Parking
155
Driving and parking Z