in the door. The side window stops. To con-
tinue closing the side window, pull on the
W switch.XConvenience closing feature: press and
hold the e button until the side win-
dows and the panorama sliding sunroof are
closed.
The indicator lamp in the e button lights
up. Air-recirculation mode is activated.
If parts of the body are in the closing area
during convenience closing, proceed as fol-
lows:
XTo open/close the side window, press the
W button.
The side window stops.XTo then open the side window, press the
W button again.
or
XPress and hold the e button again for
at least two seconds.
The side windows move in the opposite
direction.XPress the 3 button for opening/closing
the panorama sliding sunroof.
The panorama sliding sunroof stops.XTo then open the panorama sliding sunroof,
press the 3 button again.
iNotes on the automatic reversing func-
tion for:
R the side window ( Y page 87)
R the panorama sliding sunroof
( Y page 90)
XConvenience opening feature: press and
hold the e button until the side win-
dows and the panorama sliding sunroof
have opened. The side windows and the
panorama sliding sunroof move back to
their original position.
The indicator lamp in the e button goes
out. Air-recirculation mode is deactivated.
i If you open the side windows or the pan-
orama sliding sunroof manually after clos-
ing with the convenience closing feature,
they will remain in this position when
opened using the convenience opening fea-
ture.
Activating/deactivating the residual
heat function
The residual heat function is only available
with THERMOTRONIC automatic climate con-
trol.
It is possible to make use of the residual heat
of the engine to continue heating the vehicle
for approximately 30 minutes after the engine
has been switched off. The heating time
depends on the temperature that has been
set for the vehicle interior.
i The blower will run at a low speed regard-
less of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
XTurn the key to position 0 in the ignition
lock or remove it ( Y page 145).XTo activate: press the Ì button.
The indicator lamp in the Ì button lights
up.XTo deactivate: press the Ì button.
The indicator lamp in the Ì button goes
out.
i Residual heat is deactivated automati-
cally:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is switched on
Operating the climate control system135Climate controlZProCarManuals.com
Switching the auxiliary heating/venti-
lation on/off using the centre console
button
Switching on the auxiliary heating/venti-
lation
The colours of the indicator lamps on the but-
ton have the following meanings:
BlueAuxiliary ventilation switched onRedAuxiliary heating switched onYellowDeparture time preselected
( Y page 224)XPress button :.
The red or blue indicator lamp in but-
ton : lights up.
Switching off the auxiliary heating/venti-
lation
XPress button :.
The red or blue indicator lamp in but-
ton : goes out.
Switching the auxiliary heating/venti-
lation on/off using the remote control
Your vehicle comes with one remote control.
You may use two additional remote controls
for your vehicle. For more information, please
contact a qualified specialist workshop.
The remote control has a maximum range of
approximately 300 metres. This range is
reduced by:
R sources of radio interference
R solid objects between the remote control
and the vehicle
R the remote control being in an unfavoura-
ble position in relation to the vehicle
R transmitting from an enclosed space
i The optimum range can be achieved if you
hold the remote control vertically, pointing
upwards when you press one of the but-
tons.
i A battery symbol appears in the display
when the battery in the remote control is
low. Replace the remote control battery
( Y page 138).
Switching the auxiliary heating/ventila-
tion on/off
Remote control
:Display;. To check the status/set the depar-
ture time=^ To switch off the auxiliary heating/
ventilation?u To switch on the auxiliary heating/
ventilationA, To check the status/set the depar-
ture timeXTo activate: press the u button.
ON is shown in the remote control display.XTo deactivate: press the ^ button.
OFF is shown in the remote control display.
Checking the status of the auxiliary heat-
ing/ventilation
XPress the , or . button.Operating the climate control system137Climate controlZProCarManuals.com
iWhen the transmission is in position N,
you can also start the engine with the brake
pedal depressed.
Starting procedureXTo start a petrol engine: turn the key to
position 3 in the ignition lock
( Y page 145) and release it as soon as the
engine is running.XTo start a diesel engine: turn the key to
position 2 in the ignition lock
( Y page 145).
The % preglow indicator lamp in the
instrument cluster lights up.XWhen the % preglow indicator lamp
goes out, turn the key to position
3 (Y page 145) and release it as soon as the
engine is running.
i You can start the engine without preglow
if the engine is warm.
Pulling away
Manual transmission
! Change gear in good time and avoid spin-
ning the wheels. Otherwise, you could dam-
age the vehicle.
XDepress the brake pedal and keep it
depressed.XDepress the clutch pedal fully.XShift to either first gear or reverse gear R.XRelease the electric parking brake
( Y page 163).XRelease the brake pedal.XSlowly release the clutch pedal and gently
depress the accelerator pedal.
i Follow the shift recommendations in the
multifunction display for an economical
driving style ( Y page 152).
i The vehicle locks centrally once you have
pulled away. The locking knobs in the doors
drop down.
You can open the doors from the inside at
any time.
You can also deactivate the automatic lock-
ing feature ( Y page 223).
Automatic transmission
i It is only possible to shift the transmission
from position P to the desired position if
you depress the brake pedal. Only then can
the parking lock be deactivated. If you do
not depress the brake pedal, the DIRECT
SELECT lever can still be moved but the
parking lock remains engaged.
i At transmission fluid temperatures below
Ò 20 †, you can only shift out of position P
into another transmission position when
the engine is running.
XDepress the brake pedal and keep it
depressed.XShift the transmission to position D or R.XRelease the brake pedal.XCarefully depress the accelerator pedal.
The electric parking brake ( Y page 163) is
automatically released.
The red ! indicator lamp in the instru-
ment cluster goes out.
i The vehicle locks centrally once you have
pulled away. The locking knobs in the doors
drop down.
You can open the doors from the inside at
any time.
You can also deactivate the automatic lock-
ing feature ( Y page 223).
i Upshifts take place at higher engine
speeds after a cold start. This helps the
catalytic converter to reach its operating
temperature more quickly.
146DrivingDriving and parking
ProCarManuals.com
applying the brakes during the automatic
stop phase. When you depress the accel-
erator pedal, the engine starts automati-
cally and the braking effect of the HOLD
function is deactivated.
Automatic engine start
General notes
The engine is started automatically if:
R you switch off the ECO start/stop function
by pressing the ECO button
R you engage reverse gear R
R the vehicle starts to roll
R the brake system requires this
R the temperature in the vehicle interior devi-
ates from the set range
R the system detects moisture on the wind-
screen when the air-conditioning system is
switched on
R the battery's charge status is too low
R the driver's seat belt is released or the driv-
er's door is opened
Vehicles with manual transmission
! Only engage gear when the clutch pedal
is depressed.
The engine is started automatically if you:
R depress the clutch pedal fully
R depress the accelerator pedal
Vehicles with automatic transmission
The engine is started automatically if you:
R release the brake pedal when HOLD is not
activated and the transmission is in posi-
tion D or N
R depress the accelerator pedal
R move the transmission out of position P
i Shifting the transmission to position P
does not start the engine.
i If you shift the transmission from R to D,
the ECO start/stop function is available
again once the ¤ symbol reappears in
green in the multifunction display.
Deactivating/activating the ECO start/
stop function
ECO button
XTo switch off: press button :.
Indicator lamp ; and the ¤ symbol in
the multifunction display go out.XTo switch on: press button :.
Indicator lamp ; lights up.
If all conditions for automatic engine
switch-off ( Y page 148) are fulfilled, the
¤ symbol is shown in green in the mul-
tifunction display.
If not all conditions for automatic engine
switch-off ( Y page 148) are fulfilled, the
¤ symbol is shown in yellow in the mul-
tifunction display. If this is the case, the
ECO start/stop function is not available.
i If indicator lamp ; is off, the ECO start/
stop function has been deactivated man-
ually or as the result of a malfunction. The
engine will then not be switched off auto-
matically when the vehicle stops.
Driving149Driving and parkingZProCarManuals.com
ProblemPossible causes/consequences and M SolutionsVehicles with a petrol
engine:
The engine is not run-
ning smoothly and is
misfiring.There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.XHave the cause rectified immediately at a qualified specialist
workshop.The coolant tempera-
ture display is showing
more than 120 †. The
coolant warning lamp
may also be on and a
warning tone may
sound.The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.XStop as soon as possible and allow the engine and the coolant
to cool down.XCheck the coolant level ( Y page 285). Observe the warning
notes as you do so and top up the coolant if necessary.If the coolant level is correct, the engine radiator fan may be faulty.
The coolant is too hot and the engine is no longer being cooled
sufficiently.XIf the coolant temperature is below 120 †, you can continue
driving to the nearest qualified specialist workshop.XAvoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-start traffic.Manual transmission
Gear lever
! Only engage gear when the clutch pedal
is depressed.
! When shifting to 5th and 6th gear, you
must press the shift lever to the right. Oth-
erwise, you could shift unintentionally into
3rd or 4th gear and damage the engine or
transmission.
If you shift down at too high a speed (trans-
mission braking), this can cause the engine
to overrev, leading to engine damage.
Do not use the clutch bite point to keep the
vehicle stationary on uphill gradients.
There is otherwise a risk of damaging the
clutch.
! On long and steep downhill gradients,
especially if the vehicle is laden or towing
a trailer, you must shift into gear 1, 2 or 3
in good time. This uses the engine's braking
effect. This relieves the load on the brake
system and prevents the brakes from over-
heating and wearing too quickly.
Gear lever
kReverse gear1 to 6Forward gearsManual transmission151Driving and parkingZProCarManuals.com
cle from rolling away by applying the parking
brake.
Vehicles with manual transmissionXShift to either first gear or reverse gear R.XTurn the key to position 0 in the ignition
lock and remove it.
The immobiliser is activated.XApply the electric parking brake.
Vehicles with automatic transmission
XApply the electric parking brake.XShift the transmission to position P.XTurn the key to position 0 in the ignition
lock and remove it.
The immobiliser is activated.
i If you switch the engine off with the trans-
mission in position R or D, the automatic
transmission shifts to N automatically.
If you then open one of the front doors or
remove the key from the ignition, the auto-
matic transmission shifts to P.
If you shift the automatic transmission to
N before switching off the engine, the auto-
matic transmission remains in N even if a
door is opened.
Electric parking brake
General notes
GWARNING
If you leave children unattended in the vehi-
cle, they could set the vehicle in motion by,
for example:
R releasing the parking brake
R shifting an automatic transmission out of
parking position P
R shifting a manual transmission into neutral
R starting the engine
They could also operate vehicle equipment.
There is a risk of an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle.
i The electric parking brake carries out a
function check at regular intervals when
the engine is switched off. Noises that
occur are normal.
Engaging/releasing manually
Engaging
XPush handle :.
When the electric parking brake is applied,
the ! red indicator lamp lights up in the
instrument cluster.
i The electric parking brake can also be
applied when the key is removed.
Releasing
XPull handle :.
The red ! indicator lamp in the instru-
ment cluster goes out.
i You can only release the electric parking
brake when the key is in position 1 or 2 in
the ignition lock.
Parking163Driving and parkingZProCarManuals.com
Applying automatically
The electric parking brake is applied auto-
matically:
R if DISTRONIC PLUS brings the vehicle to a
standstill (vehicles with automatic trans-
mission) or
R if the HOLD function is keeping the vehicle
stationary or
R if Active Parking Assist is holding the vehi-
cle at a standstill
In addition, at least one of the following con-
ditions must be fulfilled:
R the engine is switched off
R the driver's door is open and the seat belt
is not fastened
R there is a system malfunction
R the power supply is insufficient
R the vehicle is stationary for a lengthy period
The red ! indicator lamp in the instrument
cluster lights up.
i The electric parking brake is not automat-
ically applied if the engine is switched off
by the ECO start/stop function.
Releasing automatically
i The electric parking brake can only be
released automatically in vehicles with
automatic transmission.
The electric parking brake of your vehicle is
released automatically when all of the follow-
ing conditions are fulfilled:
R the engine is running.
R the transmission is in position D or R.
R the seat belt is fastened.
R you depress the accelerator pedal.
If the transmission is in position R, the tailgate
must be closed.
If your seat belt is not fastened, the following
conditions must be fulfilled to automatically
release the electric parking brake:
R the driver's door is closed.
R you have shifted out of transmission posi-
tion P or you have previously driven faster
than 3 km/h.
Emergency braking
The vehicle can also be braked during an
emergency using the electric parking brake.
XWhile driving, push handle : of the electric
parking brake ( Y page 163).
i
The vehicle is braked for as long as han-
dle : of the electric parking brake
pressed. The longer the electric parking
brake handle : is depressed, the greater
the braking force.
During braking:
R a warning tone sounds
R the Release parking brake message
appears
R the red ! indicator lamp in the instru-
ment cluster flashes
When the vehicle has been braked to a stand-
still, the electric parking brake is engaged.
Parking up the vehicle
If you leave the vehicle parked up for longer
than four weeks, the battery may be damaged
by exhaustive discharging.
If you leave the vehicle parked up for longer
than six weeks, the vehicle may suffer dam-
age as a result of lack of use.
XVisit a qualified specialist workshop and
seek advice.
i You can obtain information about trickle
chargers from a qualified specialist work-
shop.
164ParkingDriving and parking
ProCarManuals.com
dynamic changes in the bars at the start of
a journey. During a prolonged driving time,
these changes are smaller. For more
dynamic changes, perform a manual reset.
For further information on the ECO display,
see ( Y page 212).
Braking
Important safety notes
GWARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
This increases the risk of skidding and having
an accident.
Do not shift down for additional engine brak-
ing on a slippery road surface.
Downhill gradients
Change into a lower gear in good time on long
and steep downhill gradients. Take particular
note of this when driving a laden vehicle and
when towing a trailer. For vehicles with auto-
matic transmission, you need to have selec-
ted manual drive program M(Y page 156).
i This also applies if you have activated
cruise control, SPEEDTRONIC or DIS-
TRONIC PLUS.
This will use the braking effect of the engine,
so less braking will be required to prevent the
vehicle from gaining speed. This relieves the
load on the brake system and prevents the
brakes from overheating and wearing too
quickly.
i Briefly depressing the accelerator pedal
on downhill gradients while the manual
drive program M is temporarily activated
(vehicles with automatic transmission): the
automatic transmission may switch back to
the last active automatic drive program E
or S. The automatic transmission may shift
to a higher gear. This can reduce the
engine's braking effect.
Heavy and light loadsGWARNING
The braking system can overheat if you leave
your foot on the brake pedal while driving.
This increases the braking distance and could
even cause the braking system to fail. There
is a risk of an accident.
Never use the brake pedal as a footrest. Do
not simultaneously depress both the brake
pedal and the accelerator pedal while driving.
! Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If heavy demands are made on the brakes, do
not park the vehicle immediately. Drive on for
a short while. This allows the airflow to cool
the brakes more quickly.
If the brakes have been used only moderately,
you should occasionally test their effective-
ness. To do this, brake more firmly from a
higher speed, paying attention to traffic con-
ditions. This improves the grip of the brakes.
Wet road surfaces
If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after a car wash or
after driving through deep water.
You have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehi-
cle washed, brake firmly while paying atten-
tion to the traffic conditions. This will warm
up the brake discs, thereby drying them more
quickly and protecting them against corro-
sion.
166Driving tipsDriving and parking
ProCarManuals.com