184Driving and operating
Deactivation
Adaptive cruise control is deactivated by the driver when:
■ y is pressed.
■ Brake pedal is applied.
■ Clutch pedal is depressed for more
than four seconds.
■ Gear selector lever of automatic transmission is moved to N.
The system is also automatically
deactivated when:
■ Vehicle speed accelerates above 120 mph or slows down below9 mph (on vehicles with automatic
transmission it slows down to a stop
without deactivating within
two minutes).
■ The Traction Control system is operating.
■ The Electronic Stability Control is operating.
■ There is no traffic and nothing detected on the road sides for
several minutes. In this case there
are no radar echoes and the sensor may report that it is blocked.■ The collision imminent braking system is applying the brakes.
■ The radar sensor is blocked by an ice or water film.
■ A fault is detected in the radar, engine or brake system.
Additionally the system is
automatically deactivated on vehicles
with automatic transmission (full
speed range adaptive cruise control)
when:
■ The electric parking brake is applied.
■ The vehicle is being held to a stop by the system for more than
two minutes.
■ The vehicle stops, the driver safety
belt is released and the driver's
door is opened.
When adaptive cruise control is
deactivated automatically, the control indicator m or C illuminates white
and a warning message is displayed
as a pop-up in the Driver Information
Centre.
The stored speed is maintained.9 Warning
When adaptive cruise control is
deactivated, the driver must take
over full brake and engine control.
Switching off
Press C to switch off adaptive cruise
control. The control indicator m or C
extinguishes. The stored speed is
deleted.
Switching off the ignition also
switches off adaptive cruise control
and deletes the stored speed.
Driver's attention ■ Use adaptive cruise control carefully on bends or mountain
roads, as it can lose the vehicle
ahead and need time to detect it
again.
192Driving and operating
Emergency automatic brakingAfter the brake preparation and just
before the imminent collision, this
function automatically applies limited
braking to reduce the impact speed of the collision.
Below a speed of 11 mph the system
can apply full braking.
Forward looking brake assist
In addition to the brake preparation
system and emergency automatic
braking, the forward looking brake
assist function makes the brake assist more sensitive. Therefore,
depressing the brake pedal less
strongly results in immediate hard
braking. This function helps the driver brake quicker and harder before the
imminent collision.9 Warning
Active emergency braking is not
designed to apply hard
autonomous braking or to
automatically avoid a collision. It is designed to reduce the vehicle
speed before a collision. It may not
react for stopped vehicles,
pedestrians or animals. After a
sudden lane change, the system
needs a certain time to detect the
next preceding vehicle.
The complete attention of the
driver is always required while
driving. The driver shall always be ready to take action and apply the
brakes and steer to avoid
collisions. The system is designed to work with all occupants wearingtheir seat belts.
System limitations
The active emergency braking has
limited or no function during rain,
snow or heavy dirt, as the radar
sensor can be covered by a water
film, dust, ice or snow. In case of
sensor blockage, clean the sensor
cover.
In some cases, the active emergency braking system may provide an
automatic braking in situations that
seem to be unnecessary, for instance
in parking garages, due to traffic signs
in a curve or due to vehicles in
another lane. This is normal
operation, the vehicle does not need
service. Firmly apply the accelerator
pedal to override the automatic
braking.
Settings Settings can be changed in the
vehicle personalisation menu in the
Colour-Info-Display.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 118.
Vehicle personalisation 3 122.
Fault In the event of a system service
requirement, a message is displayed
in the Driver Information Centre.
222Vehicle careVehicle careGeneral Information...................222
Vehicle checks ........................... 223
Bulb replacement .......................232
Electrical system ........................242
Vehicle tools .............................. 248
Wheels and tyres .......................249
Jump starting ............................. 262
Towing ....................................... 264
Appearance care .......................267General Information
Accessories and vehicle
modifications
We recommend to use genuine parts and accessories and factory
approved parts specific for your
vehicle type. We cannot assess or
guarantee reliability of other products
- even if they have a regulatory or
otherwise granted approval.
Do not make any modifications to the
electrical system, e.g. changes of
electronic control units (chip tuning).Caution
When transporting the vehicle on
a train or on a recovery vehicle, the
mud flaps might be damaged.
Vehicle storage
Storage for a long period of time
If the vehicle is to be stored for several months:
■ Wash and wax the vehicle.
■ Have the wax in the engine compartment and underbody
checked.
■ Clean and preserve rubber seals.
■ Fill up fuel tank completely.
■ Change engine oil.
■ Drain washer fluid reservoir.
■ Check coolant antifreeze and corrosion protection.
■ Adjust tyre pressure to the value specified for full load.
■ Park vehicle in dry, well ventilated place. Engage first or reverse gear
or set selector lever to P. Prevent
the vehicle from rolling.
■ Do not apply parking brake.
244Vehicle care
No.Circuit1Transmission control module2Engine control module3–4–5Ignition/Transmission control
module/Engine control module6Windscreen wiper7–8Fuel injection/Ignition system9Fuel injection/Ignition system10Engine control module11Lambda probe12Starter13Sensor throttle heating14Lighting15Rear window wiperNo.Circuit16Vacuum pump/Mass air flow
meter/Water in fuel sensor/DC
transformer17–18Adaptive forward lighting19Adaptive forward lighting20Fuel pump21Rear power windows22ABS23Variable effort steering24Front power windows25Power outlets26ABS27Electric parking brake28Heated rear window29Left power seat30Right power seatNo.Circuit31Air conditioning system32Body control module33Heated front seats34Sunroof35Infotainment system36–37Right high beam38Left high beam39–40–41Vacuum pump42Radiator fan43Vehicle battery/DC transformer
(only on vehicles with stop-start
system)44Headlamp washer system45Radiator fan
254Vehicle careTyre chains
Tyre chains are only permitted on the
front wheels.
Always use fine mesh chains that add no more than 10 mm to the tyre tread
and the inboard sides (including chain lock).
9 Warning
Damage may lead to tyre blowout.
5-door Hatchback, 4-door Saloon,
Sports Tourer
Tyre chains are only permitted on
tyres of size 205/60 R16, 215/60 R16 ,
225/55 R17, 225/45 R18,
225/50 R17 and 235/45 R18.
Country Tourer
Tyre chains are only permitted on
tyres of size 235/45 R18.
Temporary spare wheel
The use of tyre chains is not permitted on the temporary spare wheel.
Tyre repair kit
Minor damage to the tyre tread can be
repaired with the tyre repair kit.
Do not remove foreign bodies from
the tyres.
Tyre damage exceeding 4 mm or that
is at tyre's side wall cannot be
repaired with the tyre repair kit.9 Warning
Do not drive faster than 50 mph.
Do not use for a lengthy period.
Steering and handling may be
affected.
If you have a flat tyre:
Apply the parking brake and engage
first gear, reverse gear or P.
The tyre repair kit is in a compartment
under the floor cover in the load
compartment.
Vehicle care257
If tyre pressure is more than
1.3 bar , set it to the correct value.
Repeat the procedure until there
is no more loss of pressure.
If the tyre pressure has fallen
below 1.3 bar, the vehicle must
not be used. Seek the assistance
of a workshop.
18. Stow away tyre repair kit in load compartment.
Notice
The driving characteristics of the
repaired tyre is severely affected,
therefore have this tyre replaced.
If unusual noise is heard or the
compressor becomes hot, turn
compressor off for at least 30
minutes.
The built-in safety valve opens at a
pressure of 7 bar.
Note the expiry date of the kit. After
this date its sealing capability is no
longer guaranteed. Pay attention to
storage information on sealant
bottle.
Replace the used sealant bottle. Dispose of the bottle as prescribed
by applicable laws.
The compressor and sealant can be used from approx. -30 °C.
The adapters supplied can be used
to pump up other items e.g.
footballs, air mattresses, inflatable
dinghies etc. They are located on the
underside of the compressor. To
remove, screw on compressor air hose and withdraw adapter.
Wheel changing
Some vehicles are equipped with a
tyre repair kit instead of a spare wheel 3 254.Make the following preparations and
observe the following information:
■ Park the vehicle on a level, firm and
non-skid surface. The front wheels
must be in the straight-ahead
position.
■ Apply the parking brake and engage first gear, reverse gear or
P .
■ Remove the spare wheel 3 260.
■ Never change more than one wheel
at once.
■ Use the jack only to change wheels
in case of puncture, not for
seasonal winter or summer tyre
change.
■ The jack is maintenance-free.
■ If the ground on which the vehicle is standing is soft, a solid board
(max. 1 cm thick) should be placed
under the jack.
■ Take heavy objects out of the vehicle before jacking up.
■ No people or animals may be in the
vehicle when it is jacked-up.
Vehicle care263
■Never expose the vehicle battery to
naked flames or sparks.
■ A discharged vehicle battery can already freeze at a temperature of
0 °C. Defrost the frozen battery
before connecting jump leads.
■ Wear eye protection and protective
clothing when handling a battery.
■ Use a booster battery with the same voltage (12 Volts). Its
capacity (Ah) must not be much less than that of the discharged
vehicle battery.
■ Use jump leads with insulated terminals and a cross section of at
least 16 mm 2
(25 mm 2
for diesel
engines).
■ Do not disconnect the discharged vehicle battery from the vehicle.
■ Switch off all unnecessary electrical
consumers.
■ Do not lean over the vehicle battery
during jump starting.
■ Do not allow the terminals of one lead to touch those of the other
lead.■ The vehicles must not come into contact with each other during the
jump starting process.
■ Apply the parking brake, transmission in neutral, automatic
transmission in P.
■ If there is a cover over the vehicle
battery, remove it to charge or jumpstart the vehicle battery. Lift up the
cover at the rear and unlatch it at
the front.
■ Open the positive terminal protection caps of both vehicle
batteries.
Lead connection order:
1. Connect the red lead to the positive terminal of the booster
battery.
2. Connect the other end of the red lead to the positive terminal of the
discharged battery.
3. Connect the black lead to the negative terminal of the booster
battery.
4. Connect the other end of the black
lead to a vehicle grounding point,
such as the engine block or an
engine mounting bolt. Connect as
325
Centre console lighting ..............135
Changing tyre and wheel size ...253
Charging system ........................ 105
Child locks ................................... 28
Child restraint installation locations ................................... 66
Child restraints.............................. 64
Child restraint systems ................64
Climate control ............................. 15
Climate control systems .............138
Clock............................................. 91
Colour-Info-Display .....................118
Control indicators........................ 104
Control of the vehicle .................152
Controls ........................................ 86
Convex shape .............................. 36
Coolant and antifreeze ...............272
Cruise control ....................110, 177
Cupholders .................................. 70
Curtain airbag system .................. 62
Curve lighting.............................. 129
D Danger, Warnings and Cautions ...4
Daytime running lights ...............129
Declaration of conformity ............320
DEF ............................................ 161
Diesel exhaust fluid ....................161
Diesel fuel system bleeding .......230
Diesel particle filter .............108, 160Door open .................................. 111
Doors ............................................ 28
Driver assistance systems ..........177
Driver Information Centre ...........111
Driving characteristics and towing tips .............................. 218
Driving hints ................................ 152
Dual automatic climate control system ..................................... 144
E Electric adjustment ......................36
Electrical system......................... 242
Electric parking brake .........106, 170
Electric parking brake fault .........106
Electronic driving programmes ..167
Electronic key system ...................22
Electronic Stability Control.......... 173
Electronic Stability Control and Traction Control system ..........108
Electronic Stability Control off..... 108
End-of-life vehicle recovery .......223
Engine compartment fuse box ...243
Engine coolant ........................... 226
Engine coolant temperature gauge ..................................... 102
Engine data ............................... 279
Engine exhaust .......................... 160
Engine identification ...................275
Engine oil ................... 224, 272, 276Engine oil pressure ....................109
Entry lighting .............................. 135
Event data recorders ..................322
Exit lighting ................................ 136
Exterior care .............................. 267
Exterior light ............................... 110
Exterior lighting ....................12, 126
Exterior mirrors ............................. 36
F
Fault ........................................... 167
First aid ......................................... 82
First aid kit ................................... 82
Fixed air vents ........................... 150
Fog light ..................................... 110
Fog lights ................................... 236
Folding mirrors ............................. 37
Following distance ......................107
Following distance indication ......190
Forward collision alert................. 187
Front airbag system .....................61
Front fog lights ........................... 132
Front seats.................................... 47 Front storage ................................ 71
Front turn signal light ..................232
Fuel............................................. 210
Fuel consumption - CO 2-
Emissions ............................... 217
Fuel for diesel engines ..............211
Fuel for liquid gas operation .......211