Page 236 of 303

234Vehicle 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 3 272.
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 249 of 303
Vehicle care247No.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 275 of 303

Service and maintenance273Dexos is the newest engine oil quality
that provides optimum protection for
petrol and diesel engines. If it is
unavailable, engine oils of other listed qualities must be used.
Recommendations for petrol engines
are also valid for Compressed Natural
Gas (CNG), Liquified Petroleum Gas
(LPG) and Ethanol (E85) fuelled
engines.
Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 277.
Topping up engine oil
Engine oils of different manufacturers
and brands can be mixed as long as
they comply with the required engine
oil quality and viscosity.
Use of engine oil with only
ACEA A1/B1 or only A5/B5 quality is
prohibited, since it can cause long-
term engine damage under certain
operating conditions.
Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 277.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 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 3 277.
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. Incold regions 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.
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.
Page 299 of 303

297Child restraint systems ................59
Climate control ............................. 16
Clock............................................. 83
Collision damage repair ..............290
Control indicators.......................... 97
Control of the vehicle .................153
Controls ........................................ 79
Convex shape .............................. 33
Coolant and antifreeze ...............272
Cruise control ....................103, 178
Cupholders .................................. 68
Curtain airbag system .................. 57
Curve lighting.............................. 130
D Danger, Warnings and Cautions ...4
Daytime running lights ...............130
Declaration of conformity ............288
DEF ............................................ 162
Diesel exhaust fluid ....................162
Diesel fuel system bleeding .......236
Diesel particle filter ....................160
Door open .................................. 103
Doors ............................................ 28
Driver assistance systems ..........178
Driver Information Centre ...........104
Driving characteristics and towing tips .............................. 225
Driving hints ................................ 153E
Electric adjustment ......................33
Electrical system......................... 244
Electric parking brake ...........99, 171
Electric parking brake fault ...........99
Electronic climate control system 143
Electronic key system ...................21
Electronic Stability Control.......... 174
Electronic Stability Control and Traction Control system ..........100
Electronic Stability Control off..... 100
End-of-life vehicle recovery .......230
Engine compartment fuse box ...245
Engine coolant ........................... 233
Engine coolant temperature ......101
Engine coolant temperature gauge ....................................... 96
Engine data ............................... 280
Engine exhaust .......................... 160
Engine identification ...................276
Engine oil ................... 232, 272, 277
Engine oil pressure ....................101
Entry lighting .............................. 137
Event data recorders ..................293
Exit lighting ................................ 137
Exterior care .............................. 268
Exterior light ............................... 102
Exterior lighting ....................13, 126
Exterior mirrors ............................. 33F
First aid ......................................... 75
First aid kit ................................... 75
Fixed air vents ........................... 150
Fog light ..................................... 102
Fog lights ................................... 239
Folding mirrors ............................. 33
Following distance ......................100
Following distance indication ......192
Forward collision alert................. 189
Front airbag system .....................56
Front fog lights ........................... 134
Front pedestrian protection ........196
Front seats.................................... 42
Front storage ................................ 69
Fuel............................................. 221
Fuel consumption - CO 2-
Emissions ............................... 224
Fuel for diesel engines ..............222
Fuel for petrol engines ...............221
Fuel gauge ................................... 95
Funnel......................................... 222
Fuses ......................................... 244
G Gauges ......................................... 93
Gear shifting ............................... 100
General information ...................225
Glovebox ..................................... 68