Instruments and Indicator/Warning Lights
33
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
A fault in the entire brake system If the ABS warning light
comes on together with the brake system warning light
(handbrake must be released), there is
a fault not only in the ABS but also in
another part of the brake system
⇒
.
Electronic Differential Lock (EDL)* The EDL is a part of the ABS. A fault in th
e EDL is indicated by the ABS warning light
in the instrument cluster. Have the vehicle inspected immediately by your nearest specialist garage. Models fitted with ESP are equipped with
electronic differential lock (EDL).
If a significant fault occurs in the ABS system, a warning signal sounds additionally (3 peeps). Further information on the EDL
⇒page 132.
WARNING
•
If the brake system warning light
comes on together with the ABS
warning light
stop the vehicle immediatel
y and check the brake fluid
level in the reservoir
⇒page 167, “Brake fluid”. If the fluid level has dropped
below the MIN marking, do not drive any further - risk of accident! Obtain professional assistance.•
Pay attention to the following instru
ctions before checking the brake
fluid level and opening the bonnet
⇒page 160, “Working in the engine
compartment”.•
If the brake fluid is at
the correct level, the ABS control function has
failed. The rear wheels may then block ve
ry rapidly when braking. In certain
circumstances, this can result in the rear end of the car breaking away - risk of skidding! Drive carefully to the ne
arest specialist garage and have the
fault rectified.Traction control system (TCS) *
The warning light
comes on for a few seconds when the ignition is switched on.
The warning light flashes when a cont
rol cycle is activated while driving.
The warning light will come on and remains
on if the TCS is switched off or if there
is a fault in the system. The fact that the TCS system operates together with the ABS means that the TCS warning light will also come on if the ABS system is not operating properly. If the warning light
comes on immediately after starting the engine, the TCS
system can be switched off for technical
reasons. In this case, the TCS system can
be switched on again by swit
ching the ignition on and off. If the warning light goes
out, the TCS system is fully functional again. Further information about the TCS
⇒page 133, “Traction control system (TCS)”.
Electronic stability programme (ESP)*
The warning light
comes on for a few seconds when
the ignition is switched on.
Components of the ESP system also include the Traction Control System (TCS), the Electronic Differential Lock (EDL) and the Antilock Brake System (ABS). The warning light flashes when a control cycle is activated while driving.The warning light will come on and remains on
if the ESP is switched off or if there
is a fault in the system. The fact that the ESP system operates together with the ABS and the EDL means that the ESP warning light will also come on if
the ABS system is not operating properly.
If the warning light
comes on immediately after starting the engine, the ESP
system can be switched off for technical
reasons. In this case, the ESP system can
be switched on again by swit
ching the ignition on and off. If the warning light goes
out, the ESP system is fully functional again. Further information on the ESP
⇒page 131, “Electronic
stability programme
(ESP)*”.
Note
If the battery has been disconnected
and reconnected, the warning light
comes
on after switching on the ignition. The warn
ing light must go out after driving a short
distance.
s2g8.b.book Page 33 Tuesday, April 7, 2009 8:53 AM
Intelligent Technology
131
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Driving TipsIntelligent TechnologyElectronic stability programme (ESP)*GeneralGeneral The ESP aids you maintain control of your vehicle in situations in borderline driving situations such as when negotiating a curve too fast. The risk of skidding is reduced and your vehicle thus offers greater driving stability depending on the conditions of the road surface. This occurs at all speeds. The following systems are integrated into the electronic stability programme:•
Electronic Differential Lock (EDL),
•
Traction control system (TCS),
•
Antilock brake system (ABS),
•
Brake Assist.
Operating principle The ESP switches on automatically when the engine is started and then conducts a self-test. The ESP control unit processes data from the individual systems. It also processes additional measurement data which are supplied by highly sensitive sensors: the rotational velocity of the vehi
cle about its vertical axis, the lateral accel-
eration of the vehicle, the brakin
g pressure and the steering angle.
The direction which the driver wishes to ta
ke is determined based on the steering
angle and the speed of the vehicle and is constantly compared with the actual behaviour of the vehicle. If differences exis
t, such as the vehicle beginning to skid,
the ESP will automatically brake the appropriate wheel. The car is stabilised again by the forces which take effect when the wheel is braked. Intervention into the brake system takes place primarily on the outer front wheel of a vehicle which tends to oversteer (tendency for the rear of the vehicle to break away) while occurs this is on the inner re
ar wheel of a vehicle which tends to under-
steer (tendency to shift out of the curve). This braking control cycle is accompanied by noises. The ESP operates in combination with the ABS
⇒page 135, “Antilock brake system
(ABS)*”. If there is a fault in the ABS system, the ESP also does not operate. The ESP warning light
⇒page 33 lights up in the instrument cluster when there is a
fault on the ESP. Switching off You can switch the ESP off and on again
as you wish, by pressing the button
⇒ fig. 139
. The ESP warning light
⇒page 33 lights up in the instrument cluster
when the ESP is switched off. The ESP should normally always be switched
on. It may be good practice in certain
exceptional cases, such as when you wish
to have wheel slip, to switch off the
system. Examples:
Fig. 139 ESP switch
s2g8.b.book Page 131 Tuesday, April 7, 2009 8:53 AM
Intelligent Technology
132
•
when driving with snow chains
•
when driving in deep snow or on a loose surface
•
when it is necessary to rock a vehicle when it has become stuck.
then you should switch on the ESP again.
WARNING
It is also not possible for the ESP to overcome the physical limits of the vehicle. Even if a vehicle fitted with ESP you should still always adapt your style of driving to the condition of the
road surface and the traffic situation.
This particularly applies when driving on slippery and wet roads. The increased safety offered must not tempt you to take greater risks than other- wise - risk of an accident!
Note
•
All four wheels must be fitted with the same tyres in order to achieve problem-
free operation of the ESP. Differing rolling
circumferences of the tyres can lead to an
undesirable reduction in the engine output.•
Changes to vehicle (e.g. on engine, on the brakes, on chassis or another combi-
nation of tyres and wheels) can influence the function of the ESP
⇒page 179,
“Accessories, changes and replacement of parts”.Electronic Differential Lock (EDL)* The electronic differential lock pr
events an individual wheel from
slipping.Vehicles fitted with ABS*
can be equipped with electron
ic differential lock (EDL).
General The EDL makes it much easier, and sometimes at all possible, to start off, accelerate and climb a steep hill when the conditio
ns of the road surface are unfavourable.
Operating principle The EDL is activated automatically, that is
without any action on the part of the
driver. It monitors the speeds of the driven wheels with the aid of the ABS sensors. Should only
one
drive wheel begin spinning on a slippery surface there will be an
appreciable difference in the speed of the driven wheels. The EDL function brakes the slipping wheel and the differential transmits a greater driving force to the other driven wheel. This control proces
s is also accompanied by noises.
Overheating of the brakes The EDL switches off
automatically if unusually severe
stresses exist in order to
avoid excessive heat generation in the
disc brake on the wheel which is being
braked. The vehicle can continue to be driv
en and has the same characteristics as a
vehicle not fitted with EDL. The EDL switches on again
automatically as soon as the brake has cooled down.
WARNING
•
Carefully depress the accelerator when accelerating on uniformly slip-
pery road surfaces, such as ice and sn
ow. The driven wheels might still spin
despite the EDL and affect the stability
of the vehicle - risk of an accident!
•
You should always adapt your style of driving to the condition of road
surface and to the traffic situation even
when your vehicle is fitted with EDL.
The increased safety offered must not tempt you to take greater risks than otherwise - risk of an accident!
Note
•
If the ABS warning light comes on, this ma
y also indicate a fault in the EDL.
Please have the vehicle inspected as soon
as possible by a specialist garage.
•
Changes to vehicle (e.g. on engine, on the brakes, on chassis or another combi-
nation of tyres and wheels) can in
fluence the function of the EDL
⇒page 179,
“Accessories, changes and
replacement of parts”.
s2g8.b.book Page 132 Tuesday, April 7, 2009 8:53 AM
Index
216
Child seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Classification into groups . . . . . . . . . . . . . . . . . 126ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129Use of child safety seats . . . . . . . . . . . . . . . . . . 126
Children and safety . . . . . . . . . . . . . . . . . . . . . . . . . . 123Chrome parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Cigarette lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147Climatronic
Defrosting windows . . . . . . . . . . . . . . . . . . . . . . . 91Recirculated air mode . . . . . . . . . . . . . . . . . . . . . 91Setting temperature . . . . . . . . . . . . . . . . . . . . . . . 92
Climatronic (automatic air conditioning) . . . . . . . 89 Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Clothes hooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Cockpit
General view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Compartments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Convenience operation . . . . . . . . . . . . . . . . . . . . . . . 45 Converting/masking over headlights . . . . . . . . . . 142Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
replenishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Coolant level
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Coolant quantity
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Coolant temperature gauge . . . . . . . . . . . . . . . . . . . 16 Coolant temperature/coolant level
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Correct seated position . . . . . . . . . . . . . . . . . . . . . . 104
Counter for distance driven . . . . . . . . . . . . . . . . . . . . 18 Cruise control system . . . . . . . . . . . . . . . . . . . . . . . . . . 98Cup holder
front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
DDeactivating
an airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Deactivating an airbag . . . . . . . . . . . . . . . . . . . . . . . 120 Defrosting rear window . . . . . . . . . . . . . . . . . . . . . . . . 55De-icing the windows . . . . . . . . . . . . . . . . . . . . . . . 150 Detachable towing device . . . . . . . . . . . . . . . . . . . 146 Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155Diesel engines
Starting the engine . . . . . . . . . . . . . . . . . . . . . . . . . 95
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Direction indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Distance driven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Door
Child safety lock . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Driving economically . . . . . . . . . . . . . . . . . . . . . . . . 138EEDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 Electric sliding/tilting roof . . . . . . . . . . . . . . . . . . . . . . 46 Electrically adjustable exterior mirror . . . . . . . . . . . 58Electronic Differential Lock . . . . . . . . . . . . . . . . . . . 132Electronic immobiliser . . . . . . . . . . . . . . . . . . . . . 29, 36
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Electronic stability programme . . . . . . . . . . . . . . . . 131 Electronic stability programme (ESP)
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Emergency wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 Engine
starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94switching off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Engine compartment
Safety information . . . . . . . . . . . . . . . . . . . . . . . . 160
Engine electronics
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163replenishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Engine revolutions counter . . . . . . . . . . . . . . . . . . . . 16Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Environmental compatibility . . . . . . . . . . . . . 138, 142 ESP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Exhaust gas
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Exhaust gas inspection
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Explanations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Exterior mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Exterior mirror heater . . . . . . . . . . . . . . . . . . . . . . . . . 58FFirst-aid box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
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