Assist systems
Braking and stabilisation systems
Introduction
This chapter contains information on the following subjects:
Electronic Stability Control (ESC)
109
Antilock Braking System (ABS)
109
Traction Control System (TCS)
109
Electronic Differential Lock (EDL)
110
Hydraulic Brake Assist (HBA)
110
Hill Hold Control (HHC)
110
This chapter deals with the functions of the braking and stabilisation systems,
with the error indicator referred to in chapter » page 34, Indicator lights .
The braking and stabilisation systems are automatically activated each time
the ignition is switched on.
WARNING■ A lack of fuel can cause irregular engine running or cause the engine to
shut down. The brake assist systems would then fail to function – risk of
accident!■
The increased safety provided by the brake assist systems must not
tempt you to take safety risks – risk of accident!
■
Adjust the speed and driving style to the current visibility, weather, road
and traffic conditions.
Electronic Stability Control (ESC)
Fig. 97
Press the ESC system: Activat-
ing/deactivating TCS
Read and observe on page 109 first.
The ESC improves vehicle stability in dynamic driving situations, such as when the vehicle starts to skid.
The ESC monitors whether the desired direction of the current vehicle motion
is occurring. In case of any deviation (e.g. oversteer), the ESC automatically
brakes individual wheels to maintain the desired direction.
During an intervention of the system, the warning light
flashes in the instru-
ment cluster.
The ESC system cannot be deactivated. The
» Fig. 97 button can only be
used to deactivate the TCS » page 109.
The warning light lights up in the instrument cluster when the ASR is deacti-
vated.
The TCS should normally always be enabled. The system should be deactivated
only in the following situations, for example.
› When driving with snow chains.
› When driving in deep snow or on a very loose surface.
› When “rocking a car free” when it has become stuck.
Antilock Braking System (ABS)
Read and observe
on page 109 first.
ABS prevents the wheels locking when braking. Thus helping the driver to
maintain control of the vehicle.
The intervention of the ABS is noticeable from the pulsating movements of
the brake pedal which is accompanied by noises.
When the ABS system is active, do not brake periodically or reduce the pres-
sure on the brake pedal.
Traction Control System (TCS)
Read and observe
on page 109 first.
TCS prevents the spinning of the wheels of the driven axle. TCS reduces thedrive power transmitted to the wheels in the case of slipping wheels. Thus, for
example, driving on road surfaces with low grip is made easier.
If your vehicle is fitted with the ESC system, the ASR is integrated into the ESC
system » page 109 .
109Assist systems
WARNING■If, in the case of puncture occurring, the spare tyre with a non-bound di-
rection or an opposite direction of rotation must be mounted, then drive
carefully. The best properties of the tyre are no longer present in this situa-
tion.■
If the dimensions or design of the spare wheel differ from the tyres fitted
to the vehicle (e.g. winter tyres or low-profile tyres), it must only be used
briefly in the event of a puncture and if an appropriately cautious style of
driving is adopted.
■
If the dimensions or design of the temporary spare wheel differ from the
fitted tyres, never drive faster than 80 km/h (or 50 mph).
■
Never use the temporary spare wheel if it is damaged.
Remove / store wheel
Fig. 131
Taking the wheel out
Read and observe on page 156 first.
The spare wheel is located in a well under the floor covering in the boot and is
fixed in place with a special bolt » Fig. 131.
Take out the wheel
›
Open the boot lid.
›
Lift up the floor in the luggage compartment.
›
Loosen the belt and take out the box with the tool kit.
›
Unscrew the nut in direction of arrow » Fig. 131.
›
Take out the wheel.
Stow the wheel
›
Place the wheel into the spare wheel well with the wheel rim pointing down-
ward.
›
Pull the fixing band through the opposite holes in the wheel rim.
› Screw on the nut in the opposite direction to the arrow
» Fig. 131 until the
wheel is safely secured.›
Place the box with the tool kit back into the spare wheel and secure it with
the tape.
›
Fold back the floor in the luggage compartment.
›
Close the boot lid.
Spare wheel
Read and observe
on page 156 first.
A warning label is displayed on the rim of the temporary spare wheel.
Please note the following if you intend to use the temporary spare wheel. › The warning label must not be covered after installing the wheel.
› Be particularly observant when driving.
› The temporary spare wheel is inflated to the maximum inflation pressure for
the vehicle » page 149.
› Only use this temporary spare wheel to reach the nearest specialist garage,
since it is not intended for permanent use.
WARNING■ Never drive with more than one temporary spare wheel mounted!■Only use the temporary spare wheel when absolutely necessary.■
Avoid accelerating at full throttle, sharp braking and fast cornering.
■
The snow chains cannot be used on the temporary spare wheel.
■
Observe the instructions on the warning sign of the temporary spare
wheel.
Changing a wheel
Introduction
This chapter contains information on the following subjects:
Preliminary work
157
Full wheel trim
157
Wheel bolts
157
Changing a wheel
158
Follow-up work
158
Loosening/tightening wheel bolts
158
156Do-it-yourself
Assignment of the fuses in the dash panelFig. 150
Schematic representation of the fuse box for vehicles with left-
hand steering/right-hand steering
Read and observe
and on page 169 first.
No.Power consumer1S-contact2START - STOP3Instrument cluster, headlight range adjustment, telephone, oil level
sensor, diagnostic port, dimmable interior rear-view mirror4Control unit for ABS/ESC, steering angle sensor strip with switches5Petrol engine: Speed regulating system6Reversing light (manual gearbox)7Ignition, engine control unit, automatic gearbox8Brake pedal switch, clutch switch, engine cooling fan9Operating controls for the heating, electronic control unit for air con-
ditioning system, park distance control, window lift, engine cooling
fan, heated washer nozzles10DC-DC converter11Mirror adjustment12Control unit for trailer detection13Electronic control unit for automatic gearbox, selector lever of the
automatic gearbox14Headlight range control15Not assignedNo.Power consumer16Power steering, speed sensor, engine control unit, control unit for
fuel pump17Daytime running lights/radio for vehicles with START-STOP18Mirror heater19Ignition lock input20Engine control unit, electronic control unit for fuel pump, fuel pump21Reversing lamp (automatic gearbox), fog lights with the function
CORNER
22
Operating controls for the heating, electronic control unit for air con-
ditioning system, telephone, instrument cluster, steering angle
sender, multi-function steering wheel, ignition key removal lock, di-
agnostic port, rain sensor23Interior lighting, storage compartment and luggage compartment,
side lights24Central control unit25Light switch26Rear window wiper27Operating lever underneath the steering wheel28Petrol engine: Purge valve, PTC heater29Injection, coolant pump30Fuel pump, ignition system, cruise control31Lambda probe32High-pressure fuel pump, control valve for fuel pressure33Engine control unit34Engine control unit, vacuum pump35Switch illumination, number plate light, parking light36High beam, light switch37Rear fog light, DC-DC converter38Fog lights39Air blower for heating40Not assigned41Heated front seats42Rear window heater 170Do-it-yourself
No.Power consumer43Horn44Windscreen wipers45Boot lid lock, central locking system46Alarm47Cigarette lighter48ABS49Turn signal lights, brake lights50DC-DC converter, radio51Electric windows (driver's window and rear left window)52Electric windows (front passenger's window and rear right)53Windscreen washer54START-STOP instrument cluster, operating lever under the steering
wheel, multifunction steering wheel55Control unit for automatic gearbox56Headlight cleaning system57Headlights front, rear58Headlights front, rear
Fuses in the engine compartment
Fig. 151
Vehicle battery: Cover for the fuse box - variant 1 / variant 2
Read and observe and on page 169 first.
Replacing fuses
›
Press together the interlocks of the cover simultaneously in the direction of
the arrow
1
» Fig. 151 .
›
Remove the cover in the direction of the arrow
2
.
›
Replace the appropriate fuse.
›
Place the cover on top of the fuse box.
›
Push in the interlocks on the cover and lock.
The cover must engage securely.
Fuse assignment in the engine compartment
Fig. 152
Fuses
Read and observe and on page 169 first.
No.Power consumer1ABS2Radiator fan3Automatic gearbox4ABS5Central control unit6Electrical auxiliary heating system171Fuses and light bulbs
Index
A
abroad lead-free petrol
135
Abroad Headlights
63
ABS Function
109
Warning light37
Acceptance and recycling of used vehicles127
Accessories124
Adjusting Belt height
15
Exterior mirror68
head restraints70
Interior mirror67
Seat69
Steering wheel10
Adjusting the seats9
Adjustment Beam range
58
Air-conditioning system Air outlet vents
86
Airbag16
Deactivating20
Deactivating the front passenger airbag20
Deployment16
Front airbag17
Head airbag19
Indicator light39
Modifications and damage to the airbag system 126 Side airbag
18
Airbag system16
Air conditioning85
Air distribution control87
Climatronic88
manual air conditioning88
Air distribution control87
Air outlet vents86
Alarm Switching off
53
Triggering53
Alcantara cleaning
133
Anti-theft alarm system Activating/deactivating
54
Trailer122
Anti-theft wheel bolts160
Antilock Braking System109
Armrest Front
72
Rear72
artificial leather133
Ashtray76
ASR warning light
37
Assembling the bar ball, Step 1
118
bar ball, Step 2118
Assist system ABS
109
Assist systems109
ABS37
ASR37
Cruise Control System111
EDL110
ESC37, 109
HBA110
HHC110
Parking aid110
START-STOP112
TCS109
Audio see radio / navigation system
4
Auto Check Control33
Automatic driving lamp control60
Automatic gearbox104
Manual shifting of gears106
Selector lever-emergency unlocking167
Selector lever lock105
Starting-off and driving106
Tiptronic106
Using the selector lever105
Automatic gearbox modes105
Automatic load deactivation147
automatic transmission selector lever lock defect
106
Automatic transmission Kickdown
106
Selector lever lock105
AUX97
B
Ball head Check fitting
119
Ready position117
Battery In the remote control key
166
Belts12
Belt tensioners15
Bonnet Closing
138
Opening138
Boot Cargo element
83
Class N1 vehicles84
Double-sided floor covering84
Hooks82
See Boot lid55
Storage compartments83
Boot cover Parking position
83
Boot lid automatic locking
55
Closing55
Opening55
185Index