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168Driving and operatingIf AdBlue refill is still not detected
seek the assistance of a workshop.
If AdBlue must be refilled at
temperatures below -11 °C, the
refilling of AdBlue may 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 fumesmay 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 3 211.
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.
8. Unscrew the hose from the filler neck.
9. Mount the protective cap and turn
clockwise until it engages.
Notice
Dispose of AdBlue canister and
hose according to environmental requirements.
Exchanging AdBlue
If less than 5 litres of AdBlue have been refilled during the last 2 years,
the remaining fluid should be
exchanged since AdBlue has a
limited durability. Seek the assistance of a workshop.Caution
Disregard could lead to damage to
the selective catalytic reduction
system.
Page 273 of 305

Service and maintenance271Additional 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 3 274.
All of the recommended viscosity
grades are suitable for high ambient
temperatures.
Coolant and antifreeze
Use only organic acid type-long life
coolant (LLC) antifreeze approved for
the vehicle. Consult a workshop.
The system is factory filled with
coolant designed for excellent
corrosion protection and frost
protection down to approx. -28 °C. Innorthern 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
Over time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should
therefore be replaced at the specified interval.
AdBlue Only use AdBlue to reduce the
nitrogen oxides in the exhaust
emission 3 165.
Page 289 of 305
Technical data287AdBlue tankAdBlue, refilling quantity [l]7.5
Page 300 of 305

298IndexAAccessories and vehicle modifications .......................... 223
Active Emergency Braking .........192
Active head restraints ...................37
Adaptive cruise control .......116, 181
Adaptive forward lighting ..115,
142, 233
AdBlue ........................ 114, 165, 270
Adjustable air vents ...................156
Airbag and belt tensioners .........110
Airbag deactivation ..............58, 111
Airbag label................................... 54
Airbag system .............................. 54
Air conditioning regular operation ................................ 157
Air conditioning system .............. 151
Air intake .................................... 157
Air vents...................................... 156
Antilock brake system ................ 172
Antilock brake system (ABS) .....112
Anti-theft alarm system ................26
Anti-theft locking system .............. 26
Appearance care ........................264
Armrest ......................................... 42
Armrest storage ........................... 69
Ashtrays ..................................... 103
Automatic anti-dazzle ..................30
Automatic light control ...............139
Automatic locking ........................24Automatic transmission .............169
Auxiliary heater ........................... 156
B Battery discharge protection ......149
Battery voltage ........................... 126
Bicycle rack .................................. 70
BlueInjection ............................... 165
Bonnet ....................................... 224
Brake and clutch fluid .................270
Brake and clutch system ...........111
Brake assist ............................... 175
Brake fluid .................................. 228
Brakes ............................... 172, 228
Breakdown.................................. 262
Bulb replacement ....................... 231
C
Capacities .................................. 286
Cargo management system ........88
Car Pass ...................................... 20
Catalytic converter .....................165
Central locking system ................21
Centre console lighting ..............148
Centre console storage ...............70
Changing tyre and wheel size ...251
Charging system ........................ 111
Child locks ................................... 24
Child restraint installation locations ................................... 62
Child restraints.............................. 60