Page 242 of 323

240Vehicle careDepending on the engine, the
position of the coolant container may be different.9 Warning
Allow the engine to cool before
opening the cap. Carefully open
the cap, relieving the pressure
slowly.
To top up, use a 1:1 mixture of
released coolant concentrate mixed
with clean tap water. If no coolant
concentrate is available, use clean
tap water. Install the cap tightly. Have the coolant concentration checked
and have the cause of the coolant
loss remedied by a workshop.
Washer fluid
Fill with clean water mixed with a
suitable quantity of approved
windscreen washer fluid which
contains antifreeze.
Caution
Only washer fluid with a sufficient
antifreeze concentration provides
protection at low temperatures or
a sudden drop in temperature.
Washer fluid 3 284.
Brakes
In the event of minimum thickness of
the brake lining, a squealing noise
sounds during braking.
Continued driving is possible but
have the brake lining replaced as
soon as possible.
Once new brake linings are installed,
do not brake unnecessarily hard for
the first few journeys.
Brake fluid9 Warning
Brake fluid is poisonous and
corrosive. Avoid contact with eyes, skin, fabrics and painted surfaces.
Page 259 of 323
Vehicle care257No.Circuit52–53–54–55–56Starter57–58–59Left headlight (LED)60Cooling fan61–62–63–64–65Climate control66–67–68–No.Circuit69Right high beam (Halogen) /
Right headlight (LED)70Left high beam (Halogen)71–72Starter73–74Transmission control module75Engine control module76Exhaust reduction system77–78Horn79Washer system80–81Engine control module82–83Ignition coil84Ignition coil85PowertrainNo.Circuit86–87Diesel fuel heating88Air shutter89–90–91–92After boil pump93Electronic key system94–95Coolant pump96Diesel fuel heating97–98–99Coolant pump
After having changed defective fuses,
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunction may occur.
Page 287 of 323

Service and maintenance285Engine oil viscosity grades
The SAE viscosity grade gives
information on 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 3 288.
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. In
cold regions with very low
temperatures the factory filled coolant
provides frost protection down to
approx. -37 °C. This concentrationshould 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.
Washer fluid Use only washer fluid approved for
the vehicle to prevent damage of wiper blades, paintwork, plastic and
rubber parts. Consult a workshop.
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 3 167.
Page 319 of 323

317Child restraint systems ................64
Climate control ............................. 16
Clock............................................. 92
Collision damage repair ..............309
Control indicators........................ 105
Control of the vehicle .................158
Controls ........................................ 88
Convex shape .............................. 37
Coolant and antifreeze ...............284
Cruise control ....................111, 182
Cupholders .................................. 73
Curtain airbag system .................. 62
Curve lighting.............................. 138
D Danger, Warnings and Cautions ...4
Daytime running lights ...............138
Declaration of conformity ............305
DEF ............................................ 167
Diesel exhaust fluid ....................167
Diesel fuel system bleeding .......243
Door open .................................. 111
Doors ............................................ 29
Driver assistance systems ..........182
Driver Information Centre ...........112
Driving characteristics and towing tips .............................. 231
Driving hints ................................ 158E
Electric adjustment ......................37
Electrical system......................... 254
Electric parking brake .........107, 176
Electric parking brake fault .........107
Electronic climate control system 148
Electronic driving programmes ..172
Electronic key system ...................22
Electronic Stability Control.......... 179
Electronic Stability Control and Traction Control system ..........108
Electronic Stability Control off..... 108
End-of-life vehicle recovery .......236
Engine compartment fuse box ...255
Engine coolant ........................... 239
Engine coolant temperature ......109
Engine coolant temperature gauge ..................................... 104
Engine data ............................... 291
Engine exhaust .......................... 165
Engine identification ...................287
Engine oil ................... 238, 284, 288
Engine oil pressure ....................109
Entry lighting .............................. 143
Event data recorders ..................312
Exhaust filter ............................... 165
Exit lighting ................................ 143
Exterior care .............................. 279
Exterior light ............................... 110Exterior lighting ....................13, 134
Exterior mirrors ............................. 37
F
Fault ........................................... 173
First aid kit ................................... 84
Fixed air vents ........................... 155
Folding mirrors ............................. 37
Following distance ......................108
Following distance indication ......199
Forward collision alert................. 196
Front airbag system .....................61
Front fog lights ...........110, 140, 246
Front pedestrian protection ........203
Front seats.................................... 47
Front storage ................................ 74
Fuel............................................. 227
Fuel for diesel engines ..............228
Fuel for petrol engines ...............227
Fuel gauge ................................. 103 Funnel......................................... 229
Fuses ......................................... 254
G Gauges ....................................... 101
Gear selection ........................... 170
Gear shifting ............................... 108
General information ...................231
Glovebox ..................................... 73