148Climate controlClimate controlClimate control systems ............. 148
Air vents ..................................... 154
Maintenance .............................. 155Climate control systems
Heating and ventilation
system
Controls for: ■ Temperature
■ Air distribution
■ Fan speed
■ Demisting and defrosting
Heated rear window Ü 3 32.
Temperature
red=warmblue=coldHeating will not be fully effective until
the engine has reached normal
operating temperature.
Air distributionl=to windscreen and front door
windowsM=to head area via adjustable air
ventsK=to foot well
All combinations are possible.
Fan speed
Adjust the air flow by switching the fan to the desired speed.
Demisting and defrosting ■ Press button V: fan automatically
switches to higher speed, the air
distribution is directed towards the
windscreen.
■ Set temperature control to warmest
level.
■ Switch on heated rear window Ü.
■ Open side air vents as required and
direct them towards the door
windows.
164Driving and operating
Cleaning takes place quickest at high
engine speeds and loads.
The control indicator % extinguishes
as soon as the self-cleaning
operation is complete.
Catalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.Caution
Fuel grades other than those listed on pages 3 207, 3 274 could
damage the catalytic converter or
electronic components.
Unburnt petrol will overheat and
damage the catalytic converter.
Therefore avoid excessive use of the starter, running the fuel tank
dry and starting the engine by
pushing or towing.
In the event of misfiring, uneven
engine running, a reduction in engine performance or other unusual
problems, have the cause of the fault
rectified by a workshop as soon as
possible. In an emergency, driving
can be continued for a short period,
keeping vehicle speed and engine
speed low.
AdBlue General information
The selective catalytic reduction
(BlueInjection) is a method to
substantially reduce the nitrogen
oxides in the exhaust emission. This
is achieved by injecting a Diesel
Exhaust Fluid (DEF) into the exhaust system.
The designation of the used DEF is
AdBlue Ⓡ 1)
. It is a non-toxic, non-
flammable, colourless and odourless
fluid which consists of 32 % urea and
68 % water.9 Warning
Avoid contact of your eyes or skin
with AdBlue.
In case of eye or skin contact,
rinse off with water.
Caution
Avoid contact of the paintwork with AdBlue.
In case of contact, rinse off with water.
AdBlue freezes at a temperature of
approx. -11 °C. As the vehicle is
equipped with an AdBlue pre-heater,
the emissions reduction at low
temperatures is ensured. The AdBlue
pre-heater works automatically.
Level warnings The AdBlue consumption is approx.4000 mpg and depends on the driving
behaviour.
1) Registered trademark of the Verband der Automobilindustrie e.V. (VDA)
Driving and operating165
If the AdBlue level falls below a
certain value, a level warning Exhaust
Fluid Range: 1500 mi will be
displayed in the Driver Information Centre (DIC).
A volume of at least 5 litres of AdBlue must be refilled soon.
Driving is possible without any
restrictions.
If AdBlue is not refilled within a certain
distance, further level warnings are
displayed in the DIC depending on
the current AdBlue level. The
warnings announce restrictions,
starting with limitations of the
maximum speed up to a prevention of an engine restart. The restrictions are
a legal requirement.
Before a limitation of the maximum
speed is activated with the next
restart, the warning messages
■ Exhaust Fluid Empty Refill Now
■ Max Speed Upon Restart 60 mph
are alternately displayed in the DIC.
Additionally the control indicator Y
illuminates continuously and a
warning chime sounds.
A speed limitation to 60 mph will be
activated with approx. 560 miles
exhaust fluid range remaining.
After a further limitation of the
maximum speed to 30 mph, a
prevention of the engine restart will be
announced.
Before the prevention of the engine
restart is activated, the warning
messages
■ Exhaust Fluid Empty Refill Now
■ Speed Limited to 30 mph
■ Engine Will Not Restart
are alternately displayed in the DIC.
166Driving and operating
Additionally the control indicator Y
flashes continuously and a warning
chime sounds repeatedly.
To restart the engine, the tank must be filled with AdBlue first.
Refilling AdBlueCaution
Only use AdBlue that complies
with European standards
DIN 70 070 and ISO 22241-1.
Do not use additives.
Do not dilute AdBlue.
Otherwise the selective catalytic
reduction system could be
damaged.
Notice
Only use the designated AdBlue canisters for refilling to prevent a
topping up of too much AdBlue.
Additionally the fumes in the tank are captured in the canister and do not
emerge.
Since AdBlue has a limited
durability, check the date of expiry
before refilling.
Notice
A volume of at least 5 litres of AdBlue
must be added when refilling.
Otherwise the refilling of AdBlue
might not be detected by the system.
If AdBlue must be refilled at
temperatures below -11 °C, the
refilling of AdBlue might not be
detected by the system. In this case,
park the vehicle in a space with a
higher ambient temperature until
AdBlue is liquefied.
Notice
When unscrewing the protective cap from the filler neck, ammonia fumesmight emerge. Do not inhale as the
fumes have a pungent smell. The
fumes are not harmful by inhalation.
The vehicle must be parked on a level surface.
The filler neck for AdBlue is located
behind the fuel filler flap.
The fuel filler flap is located at right rear side of the vehicle.The fuel filler flap can only be opened
if the vehicle is unlocked.
1. Remove key from ignition lock.
2. Close all doors to avoid ammonia fumes entering the interior of the
vehicle.
3. Pull fuel filler flap at the recess and open 3 210.
4. Unscrew protective cap from the
filler neck.
5. Open AdBlue canister.
6. Mount one end of the hose on the
canister and screw the other end
on the filler neck.
7. Lift the canister until it is empty.
Driving and operating167
8. Unscrew the hose from the fillerneck.
9. Mount the protective cap and turn
clockwise until it engages.
Notice
Dispose AdBlue canister and hose
according to environmental
requirements.
After restart, let the engine run in
neutral for approx. 10 seconds before
starting-off.
Exchanging AdBlue
Have AdBlue in the tank exchanged
completely after two years at the latest when driving mainly in warm
areas and with low mileage.Caution
Disregard could lead to damage to
the engine.
Automatic transmission
The automatic transmission permits
automatic gearshifting (automatic
mode) or manual gearshifting
(manual mode).
Transmission display
The mode or selected gear is shown
in the transmission display.
Selector leverP=park position, wheels are
locked, engage only when the
vehicle is stationary and the
parking brake is appliedR=reverse gear, engage only
when the vehicle is stationaryN=neutralD=automatic mode with all gears
The selector lever is locked in P and
can only be moved when the ignition
is on and the brake pedal is applied.
268Service and maintenance
Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 271.
Additional engine oil additives
The use of additional engine oil
additives could cause damage and
invalidate the warranty.
Engine oil viscosity grades
The SAE viscosity grade gives
information of the thickness of the oil.
Multigrade oil is indicated by two
figures, e.g. SAE 5W-30. The first
figure, followed by a W, indicates the
low temperature viscosity and the
second figure the high temperature viscosity.
Select the appropriate viscosity grade
depending on the minimum ambient
temperature 3 271.
All of the recommended viscosity
grades are suitable for high ambient
temperatures.Coolant and antifreeze
Only use silicate-free long life coolant
(LLC) antifreeze.
The system is factory filled with
coolant designed for excellent
corrosion protection and frost
protection down to approx. -28 °C. In
northern countries with very low
temperatures the factory filled coolant
provides frost protection down to
approx. -37 °C. This concentration
should be maintained all year round.
The use of additional coolant
additives that intend to give additional
corrosion protection or seal against
minor leaks can cause function
problems. Liability for consequences
resulting from the use of additional
coolant additives will be rejected.
Brake and clutch fluid
Only use high-performance brake
fluid approved for the vehicle, consult a workshop.Over time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should
therefore be replaced at the specified interval.
Brake fluid should be stored in a
sealed container to avoid water
absorption.
Ensure brake fluid does not become
contaminated.
AdBlue Only use AdBlue to reduce the
nitrogen oxides in the exhaust
emission 3 164.
Technical data283
AdBlue tankAdBlue, refilling quantity [l]7.5Tyre pressuresComfort with up to
3 peopleECO with up to 3 peopleWith full loadEngineTyresfrontrearfrontrearfrontrear[kPa/bar]
([psi])[kPa/bar]
([psi])[kPa/bar]
([psi])[kPa/bar]
([psi])[kPa/bar]
([psi])[kPa/bar]
([psi])A14NEL,
A14NET,
A14NET LPG215/60 R16,220/2.2 (32)220/2.2 (32)260/2.6 (38)260/2.6 (38)230/2.3
(33)300/3.0
(43)225/50 R17,235/45 R18,235/40 R19A16XNT CNG225/50 R17,220/2.2 (32)220/2.2 (32)260/2.6 (38)260/2.6 (38)230/2.3
(33)280/2.8
(41)215/60 R16
290IndexAAccessories and vehicle modifications .......................... 221
Active Emergency Braking .........190
Active head restraints ...................36
Adaptive cruise control .......114, 180
Adaptive forward lighting ..........
................................ 114, 139, 231
AdBlue ........................ 112, 164, 267
Adjustable air vents ...................154
Advanced parking assist ............195
Airbag and belt tensioners .........109
Airbag deactivation ..............55, 109
Airbag system .............................. 53
Air conditioning regular operation ................................ 156
Air conditioning system .............. 149
Air intake .................................... 155
Air vents...................................... 154
Antilock brake system ................ 171
Antilock brake system (ABS) .....111
Anti-theft alarm system ................25
Anti-theft locking system .............. 25
Appearance care ........................262
Armrest ......................................... 42
Armrest storage ........................... 66
Ashtrays ..................................... 101
Automatic anti-dazzle ..................29
Automatic light control ...............137Automatic locking ........................23
Automatic transmission .............167
Auxiliary heater ........................... 154
B
Battery discharge protection ......147
Battery voltage ........................... 125
Bicycle rack .................................. 68
BlueInjection ............................... 164
Bonnet ....................................... 223
Brake and clutch fluid .................267
Brake and clutch system ...........110
Brake assist ............................... 173
Brake fluid .................................. 226
Brakes ............................... 171, 226
Breakdown.................................. 260
Bulb replacement ....................... 229
C
Capacities .................................. 282
Cargo management system ........86
Car Pass ...................................... 19
Catalytic converter .....................164
Central locking system ................21
Centre console lighting ..............146
Centre console storage ...............67
Changing tyre and wheel size ...249
Charging system ........................ 109
Child locks ................................... 23