Driving and operating217Trailer hitch
General information
Only use towing equipment that has
been approved for your vehicle.
Entrust retrofitting of towing
equipment to a workshop. It may be
necessary to make changes that
affect the cooling system, heat
shields or other equipment.
The bulb outage detection function for trailer brake light cannot detect a
partial bulb outage, e.g. in case of 4 x
5 Watt bulbs, the function only detects
lamp outage when only a single
5 Watt lamp remains or none remain.
Fitting of towing equipment could
cover the opening of the towing eye.
If this is the case use the coupling ball bar for towing. Always keep the
coupling ball bar in the vehicle.Driving characteristics and
towing tips Before attaching a trailer, lubricate
the coupling ball. However, do not do
so if a stabiliser, which acts on the
coupling ball, is being used to reduce snaking movements.
For trailers with low driving stability
and caravan trailers with a permitted
gross vehicle weight of more than
1300 kg (Sports tourer: 1200 kg) the use of a stabiliser is strongly
recommended when driving above
80 km/h.
If the trailer starts snaking, drive more
slowly, do not attempt to correct the
steering and brake sharply if
necessary.
When driving downhill, drive in the
same gear as if driving uphill and
drive at a similar speed.
Adjust tyre pressure to the value
specified for full load 3 309.Trailer towing
Trailer loads
The permissible trailer loads are
vehicle and engine-dependent
maximum values which must not be exceeded. The actual trailer load is
the difference between the actual
gross weight of the trailer and the
actual coupling socket load with the
trailer coupled.
The permissible trailer loads are
specified in the vehicle documents. In general, they are valid for gradients
up to max. 12 %.
The permitted trailer load applies up to the specified incline and up to an
altitude of 1000 metres above sea
level. Since engine power decreases
as altitude increases due to the air
becoming thinner, therefore reducing
climbing ability, the permissible gross
train weight also decreases by 10 %
for every 1000 metres of additional
altitude. The gross train weight does
not have to be reduced when driving
on roads with slight inclines (less than
8 %, e.g. motorways).
Driving and operating221
■The coupling ball bar must be firmly
engaged in the opening.
■ The coupling ball bar must be locked and the key removed.9 Warning
Towing a trailer is permitted only
when a coupling ball bar is fitted correctly. If the coupling ball bardoes not engage correctly, seekthe assistance of a workshop.
Dismounting the coupling ball
bar
Open the protective flap and turn the
key to position c to unlock the
coupling ball bar.
Pull out rotary handle and turn
clockwise as far as it will go. Pull out coupling ball bar downwards.
Insert sealing plug in opening. Fold away socket.
All versions except 3-door hatchback:
Attach the rear side of the cover into
the recess of the bumper and fold the
front side upward.
Press fastenings outward.
Trailer stability assist
If the system detects snaking
movements, engine power is reduced and the vehicle/trailer combination is
selectively braked until the snaking ceases. While system is working keep
steering wheel as still as possible.
Trailer stability assist (TSA) is a
function of the Electronic Stability
Control 3 175.
226Vehicle care
Coolant levelCaution
Too low a coolant level can causeengine damage.
If the cooling system is cold, the
coolant level should be above the
filling line mark. Top up if the level is
low.
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.
Power steering fluid
Caution
Extremely small amounts of
contamination can cause steering
system damage and cause it to not work properly. Do not allow
contaminates to contact the fluid
side of the reservoir cap/dipstick or
from entering the reservoir.
Power steering fluid level normally
does not have to be checked. If an
unusual noise sounds during steering or the power steering reacts
unusually, seek the assistance of a workshop.
Vehicle care255
Fuse assignmentsNo.Circuit1–2Trailer outlet3Parking assist4–5–6–7Power seat8–9–10–11Trailer module, trailer socket12Trailer module13Trailer outlet14Rear seat, electrical folding15–16Inside mirror, rear view camera17Power outletNo.Circuit18–19Steering wheel heating20Sunroof21Heated front seats22–23–24–25–26–27–28–29–30–31Amplifier, subwoofer32Active damping system, lane
departure warning
338
Glass panel .................................. 37
Glovebox ..................................... 60
Graphic-Info-Display, Colour- Info-Display ............................ 124
H Halogen headlights ....................231
Hand brake ......................... 171, 172
Hazard warning flashers ............144
Headlight flash ........................... 139
Headlight range adjustment ......139
Headlights................................... 137
Headlights when driving abroad 140
Head restraint adjustment .............9
Head restraints ............................ 38
Heated mirrors ............................. 32
Heated rear window ..................... 35
Heated steering wheel ...............101
Heating ........................................ 46
Heating and ventilation system . 150
Height adjustable rear floor cover 88
High beam ......................... 118, 138
High beam assist ................118, 138
Hill start assist ........................... 174
Horn ..................................... 15, 101
I
Identification plate .....................287
Ignition switch positions .............161
Immobiliser .......................... 30, 118Indicators.................................... 108
Information displays.................... 119
Instrument cluster ......................108
Instrument panel fuse box .........253
Instrument panel illumination .....249
Instrument panel illumination control .................................... 146
Instrument panel overview ........... 11
Interactive driving system ...........177
Interior care ............................... 282
Interior lighting ............................ 146
Interior lights ...................... 146, 249
Interior mirrors .............................. 32
Interruption of power supply ......170
Introduction .................................... 3
ISOFIX child restraint systems ....59
J
Jump starting ............................. 276
K Key, memorised settings ..............23
Keys ............................................. 21
Keys, locks ................................... 21
L
Lane departure warning .....116, 209
Lashing eyes ............................... 91
Lighting features .........................147
Light switch ................................ 137Load compartment ................26, 82
Load compartment cover .............86
Load compartment fuse box ......254
Loading information .....................98
Low fuel ..................................... 118
Low washer fluid ........................119
M
Malfunction indicator light ..........114
Manual anti-dazzle ......................32
Manual mode ............................. 169
Manual transmission .................. 171
Manual windows ..........................33
Memorised settings ......................23
Mirror adjustment ......................... 10
Misted light covers .....................145
N New vehicle running-in ..............161
Number plate light .....................249
O
Object detection systems ...........195
Odometer ................................... 108
Oil, engine .......................... 285, 289
Operate pedal ............................. 115
Outside temperature ..................104
Overrun cut-off ........................... 162
339
PParking ................................ 19, 165
Parking assist ............................ 195
Parking brake ............................ 172
Parking lights ............................. 145
Particulate filter ........................... 166
Performance .............................. 295
Performing work ........................223
Pollen filter ................................. 159
Power outlets ............................. 106
Power seat adjustment ................44
Power steering............................ 116
Power steering fluid ....................226
Power windows ............................ 33
Preheating ................................. 117
Puncture ..................................... 268
Q
Quickheat ................................... 158
R Radio Frequency Identification (RFID) ..................................... 335
Radio remote control ...................22
Reading lights ............................ 147
Rear carrier system ......................64
Rear floor storage cover ..............88
Rear fog light ............................. 119
Rear fog lights ........................... 145
Rear seats .................................... 47Rear storage................................. 86
Rear view camera ...................... 204
Rear window wiper/washer ........ 104
Recommended fluids and lubricants ........................ 285, 289
Reduced engine power ..............118
Refuelling ................................... 213
Retained power off .....................161
Reversing lights .........................145
Ride control systems ..................174
Roof .............................................. 36
Roof load ...................................... 98
Roof rack ..................................... 97
S Safety belts ................................... 47
Safety net .................................... 93
Seat adjustment ....................... 7, 40 Seat belt ........................................ 9
Seat belt reminder .....................113
Seat belts ..................................... 47
Seat folding .................................. 43
Seat position ................................ 40
Selector lever ............................. 168
Service ............................... 159, 284
Service display .......................... 110
Service information ....................284
Service vehicle soon .................. 114
Side airbag system ......................51
Side blind spot alert ....................203Sidelights.................................... 137
Side turn signal lights ................247
Smartphone controller ................125
Spare wheel ............................... 272
Speed limiter............................... 181
Speedometer ............................. 108
Starting and operating ................161
Starting off ................................... 18
Starting the engine ....................161
Steering ...................................... 160
Steering wheel adjustment ..10, 100
Steering wheel controls .............100
Stop-start system........................ 163
Storage ......................................... 60
Storage compartments .................60
Sunroof ........................................ 36
Sunvisor lights ........................... 147
Sun visors .................................... 35
Symbols ......................................... 4
T Tachometer ............................... 108
Tail lights ................................... 240
Three-point seat belt .................... 48
Tools .......................................... 256
Top-tether fastening eyes ............59
Tow bar....................................... 217
Towing ................................ 217, 278
Towing another vehicle .............279
Towing equipment .....................218