Heating and air conditioning system121
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
– Return to a higher level by selecting the menu point Back, i. e. in the
menu Aux. Heating (auxiliary heating) .
– In the menu Aux. Heating (auxiliary heating) select the menu point
Running time and set the desired operating period in steps of
1 minute. The operating period can be 5 to 60 minutes.
– By selecting the menu point Back, you will reach in the menu
Aux. Heating (auxiliary heating) .
– In the menu Aux. heating (auxiliary heating) select the menu point
Mode .
– In the menu Mode select the desired mode Heating or Ventilation .
Programming
For the programming of the auxiliary heating (auxiliary heating and ventilation) in
the menu Aux. heating (Aux. heating) there are three pre-set times:
•Pre-set time 1
•Pre-set time 2
•Pre-set time 3
In each pre-set time, the day (if necessary each day = daily) and the time (hour and
minute) can be set for the operating period of the auxiliary heating and/or ventila-
tion.
If you leave the pre-set menu by selecting the menu Back or do not operate the
display for longer than 10°seconds, the set values are stored, but the pre-set time is
not active.
Both other pre-set times can be prog rammed and stored in the same way.
If you select the menu Activate after setting the desired values, appears on the
display Pre-set time (weekday, hours, minute) activated! and the set pre-set
time is active.
Only one programmed pre-set time can be active.
The last programmed pre-set time remains active. Changing the active pre-set time is carried out after selecting the menu point
Activate
in the menu Aux. heating (auxiliary heating) by selecting a pre-set time.
The prerequisite for the correct switching on of the auxiliary heating (auxiliary
heating and ventilation) according to th e programmed pre-set time is the correct
setting of the current time and the weekday ⇒ page 120.
If the system is running, a warning light in the button for direct switching on/off of
the auxiliary heating lights up.
The running system deactivates after expiration of the operating period or is deac-
tivated earlier by pres sing the button for direct switching on/off of the auxiliary
heating ⇒page 123.
The random pre-set time can be deactivated by selecting the menu point Deactive
in the menu Activate.
After selecting the menu point Fa c t o r y s e t t i n g in the menu Aux. heating
(auxiliary heating) , it is possible to change to the factory setting.
Radio remote control
The auxiliary heating (auxiliary heating and ventilation) can be
switched on or off with the remote control.
– For switching on, press the button .
– For switching off, press the button .
Fig. 142 Auxiliary heating:
Radio remote control
ON
OFF
20A5Facelift.book Page 121 Saturday, September 6, 2008 2:13 PM
Heating and air conditioning system
122
The transmitter and the battery are housed in the housing of the remote control.
The receiver is located in the interior of the car.
If the battery is properly charged, the ef fective range is up to 600 m. For switching
on or off the auxiliary heating, hold the remote control vertically with the antenna
⇒ page 121, fig. 142 towards the top. You must not cover over the antenna with
the fingers or the palm of the hand. Obstacles between the remote control and the
vehicle, bad weather conditio ns and a weaker battery can clearly reduce the range.
The auxiliary heating can only be switched on or off with the remote control, if the
distance between the remote control and the vehicle is at least 2 m.
Warning light in the remote control
The warning light in the remote control ⇒page 121, fig. 142 indicates after a
keystroke if the remote control signal was received by the auxiliary heating and if
the battery is adequately charged.Caution
There are electronic components in the remote control, protect the remote control
against water, severe shoc ks and direct sun rays.
Changing the battery of the radio remote control
If the warning light of the remote control indicates a weak or discharged
battery, ⇒page 121, fig. 142 , it must be replaced. The battery is located
under a cover on the back of the remote control.
– Place a coin into the gap of the battry cover and by turning to the left, unlock the cover.
– Change the battery, insert the cover and lock it by turning to the right.
For the sake of the environment
Dispose of an old battery in accord ance with environmental regulations.
Note
•Pay attention to the correct polarity when changing the battery.
•The replacement battery must have the same specification as the original
battery.
Display warning lightImportance
Lights up green for 2 seconds.The auxiliary heating was switched on.
Lights up red for 2 seconds.The auxiliary heating was switched off.
Slowly flashes green for 2 seconds.The ignition signal was not received.
Quickly flashes green for 2 seconds.The auxiliary heating is blocked, e. g
because the tank is nearly empty or
there is a fault in the auxiliary heating.
Flashes red for 2 seconds.The switch off signal was not received.
Lights up orange for 2 seconds, then
green or red.The battery is weak, however the
switching on or off signal was received.
Lights up orange for 2 seconds, then
flashes green or red.The battery is weak, however the
switching on or off signal was not
received.
Flashes orange for 5 seconds.The battery is discharged, however the
switching on or off signal was not
received.
AA
20A5Facelift.book Page 122 Saturday, September 6, 2008 2:13 PM
Heating and air conditioning system123
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Direct switching on/off
The auxiliary heating (auxiliary heating and ve ntilation) can be switched on or off at
any time directly using the button on the operating part of the Climatic
⇒ fig. 143 or on the operating part of the Climatronic.
If the auxiliary heating and ventilation is not switched off earlier, it switches off
automatically after the expiration of the set operating period, in the menu Running
time .
Fig. 143 Button for direct
switching on/off of the auxil-
iary heating (auxiliary
heating and ventilation) on
the operating part of the
Climatic
20A5Facelift.book Page 123 Saturday, September 6, 2008 2:13 PM
Starting-off and Driving125
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Ignition lock
Petrol engines
- ignition switched off, engine off, the steering can be locked.
- ignition switched on
- start engine
Diesel engines - interruption of fuel supply, ignition switched off, engine off, the steering can
be locked.
- heating glow plugs on, ignition switched on
•You should not switch on any major elec trical components during the heating
period otherwise the vehicle batter y will be drained unnecessarily.
- start engine
Applies to all models:
Position
To lock the steering , with the ignition key withdrawn, turn the steering wheel until
the steering locking pin is heard to engage. You should always lock the steering as
a general rule if you leave your vehicle. This acts as a deterrent against possible theft
of your vehicle ⇒.
Position Move the steering wheel back and forward
a little if the ignition key cannot, or
cannot easily be turned into this position, in order to release the steering lock.
Position
The engine is started in this position. At the same time switched on low beam or
main beam or other electrical compon ents with major power consumption are
briefly switched off. The ignition key moves back into position when one
releases the key.
The ignition key must be turned back into position each time before starting the
engine again. The starter repeat lock in th e ignition lock prevents the starter being
engaged when the engine is ru nning and thus getting damaged.
Ignition key withdrawal lock (automatic gearbox)
You can only withdraw the ignition key after switching off the ignition if the selector
lever is in position P .
WARNING
•When driving, the ignition key must always be in the position (igni-
tion switched on) without the engine running. This position is indicated by
the warning lights coming on. If this is not the case, it could result in unex-
pected locking of the steering wheel - risk of accident!
•Only remove the ignition key from the ignition lock when the vehicle has
come to a standstill (put on the handbrake or select the selector lever posi-
tion P). The steering lock can enga ge immediately - risk of accident!
•Always withdraw the ignition key if you are going to leave the vehicle,
even for a short time. This is particularly important if children are left in the
vehicle. The children might otherwise star t the engine or switch on electrical
equipment (e.g. power windows) - risk of accident or injury!
Fig. 146 Ignition lock posi-
tions
A1
A2
A3
A1
A2
A3
A1
A2
A3
A2
A1
A2
20A5Facelift.book Page 125 Saturday, September 6, 2008 2:13 PM
Starting-off and Driving127
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
You should not switch on any major electrical components during the heating
period otherwise the vehicle battery will be drained unnecessarily.
•You should start the engine immediately after the glow plug warning light
has gone out.
•The glow plug warning light will come on for about one second if the engine is
at a normal operating temperature or if th e outside temperature is above +5°C. This
means that you can start the engine right away.
•Interrupt the attempt at starting after 10 seconds if the engine does not start
right awayand wait for about 30 seconds before repeating the attempt.
•It is possible that the fuse on the diesel preglow system is defect if the engine
still does not start. Check the fuse and replace it if necessary ⇒page 257.
•Contact the nearest specialist garage to obtain professional assistance.
Starting the engine after the fuel tank has run dry
It may take longer than normal to start the engine after refuelling if the fuel tank has
run completely dry - up to one minute. This is because the fuel system must first of
all be filled while the attempting to start the engine.
Switching off the engine
– The engine can be switched off by turning the ignition key from posi- tion into ⇒page 125, fig. 146 .
WARNING
•Never switch off the engine before the vehicle is stationary - risk of acci-
dent!
•The brake booster only operates when the engine is running. Greater
physical effort for braking is required when engine is switched off. Because
if you do not stop as normal, this can cause an accident and severe injuries.
Caution
you should not switch the engine off right away at the end of your journey after the
engine has been operated for a lengthy peri od at high loads but should be allowed
it to run at idling speed for about 2 minutes . This prevents any accumulation of heat
when the engine is switched off.
Note
•The radiator fan may continue running fo r a further 10 minutes or so after the
engine and the ignition have been switched off. The coolant fan may, however, also
switch on again after some time if the coolant temperature rises because of an
accumulation of heat in the engine or if the engine is warm and the engine
compartment is additionally heated by strong sunlight.
•This is why particular care is required when carrying out any work in the engine
compartment ⇒page 225, “Working in the engine compartment”.
Shifting (manual gearbox)
Shift into reverse only when the car is stationary. Depress the clutch pedal and hold
it fully depressed. Wait a moment before engaging reverse gear in order to avoid
any shift noises.
A1
Fig. 147 The shift pattern: 5-
speed or 6-speed manual
gearbox
20A5Facelift.book Page 127 Saturday, September 6, 2008 2:13 PM
Starting-off and Driving
128
The reversing lights will come on once reverse gear is engaged, provided the igni-
tion is on.
WARNING
Never engage the reverse gear when driving - risk of accident!
Note
•One should not lay the hand on the shift lever while driving the vehicle. The
pressure of the hand will be transferred to the gearshift forks in the gearbox. This
can, over a period of time, lead to early wear of the gearshift forks.
•Depress the clutch pedal fully when chan ging gears, in order to avoid unneces-
sary wear and damage.
Handbrake
Applying the handbrake
– Pull the handbrake lever up fully. Releasing the handbrake
– Pull the handbrake lever up slightly and
at the same time press in the
locking button ⇒fig. 148 .
– Hold the button pressed and push the handbrake lever down fully ⇒ .
The handbrake warning light lights up when the handbrake is applied, provided
the ignition is on.
A warning signal sounds and the following text appears in the display* if you have
inadvertently driven off with the handbrake applied:
Handbrake on
The handbrake warning is activated if you drive at a speed of more than 6 km/h for
more than 3 seconds.
WARNING
•Please note that the handbrake must be fully released. A handbrake
which is only partially released can re sult in the rear brakes overheating
which will have a negative effect on the operation of the brake system - risk
of accident! In addition this can result in premature wear of the rear brake
pads.
•Never leave children unattended in the vehicle. The children might, for
example, release the handbrake or take the vehicle out of gear. The vehicle
might then move off - risk of accident!
Caution
After the car has come to a stop, always firs t of all apply the handbrake firmly before
then additionally engaging a gear (manual gearbox) or moving the selector lever
into position P (automatic gearbox).
Fig. 148 Centre console:
Handbrake
20A5Facelift.book Page 128 Saturday, September 6, 2008 2:13 PM
Automatic gearbox135
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Information for driving with the automatic gearbox DSG*
The abbreviation DSG means Direct shift gearbox (Direct shift
gearbox).
Two independent clutches are needed for the power transmission
between the engine and the gearbox. These replace the torque converter
of the conventional automatic gearbox. Their shifting is matched in such
a way that there are no jerks when shifting the gear and the power trans-
mission of the engine to the front wheels is not interrupted. Shifting up
and down through the gears is perf ormed automatically. You can also,
however, switch the gearbox over into the Tiptronic mode. This mode
makes it possible for you to also shift gears manually ⇒page 138.
Starting-off and Driving
– Depress the brake pedal fully and keep it depressed.
– Press the Shiftlock button (button in handle of the selector lever),
move the selector lever into the desired position, e.g. in D, and then
release the Shiftlock button.
– Release the brake pedal and depress the accelerator ⇒.
Stopping for a short time
– The selector lever position N does not have to be selected when stop-
ping just for a short time, such as at a cross roads. It is absolutely suffi-
cient to hold the stopped vehicle stationary by depressing the foot
brake. The engine can, however, be allowed just to idle.
Parking
– Depress the brake pedal and hold it depressed.
– Apply the handbrake firmly.
– Press and Shiftlock button in the selector lever, move the selector lever to P and then release the Shiftlock button.
The engine can only be started when the selector lever is in position P or N
⇒ page 126. At temperatures below -10 °C the engine can only be started in the
selector lever position P.
It is sufficient to engage selector lever position P when parking on a flat surface.
When parking on a slope you should first apply the handbrake firmly and then
move the selector lever into position P. This is to ensure that there is no excessive
pressure acting on the lock mechanism and that it is easier to subsequently move
the selector lever out of position P.
If the selector lever position N is selected by accident while driving it is first neces-
sary to release pressure on the accelerato r pedal and wait for idling speed of the
engine to be reached before engaging a drive position in the selector lever.
WARNING
•Do not depress the accelerator when changing the position of the
selector lever if the car is stationary an d the engine is running - risk of acci-
dent!
•Never move the selector lever into position R or P when driving - risk of
an accident!
•If you are stopping at a hill (downhill section), never try to hold the car
stationary with the gear engaged by me ans of the “accelerator”, this means
by letting the clutch slip. This can lead to overheating of the clutch. If there is
a risk of overheating of the clutch due to overload, the clutch is opened auto-
matically and the vehicle rolls backward - risk of accident!
•If you must stop at a slope, depress and hold the brake pedal, so that you
can prevent the vehicle from rolling back.
Caution
•The double clutch on the automatic gear box DSG is equipped with an overload
protection. If you make use of the uphill function on a vehicle which is stationary or
driving slowly uphill, it will result in an increase of thermal stress of the clutches.
•An overheating of the clutches can be detected by the flashing of the selector
level indicator and the “jerk” of the clut ches, finally the clutches are opened. The
power transmission from the engine to the front wheels is interrupted and as a
20A5Facelift.book Page 135 Saturday, September 6, 2008 2:13 PM
Intelligent Technology
194
•when driving with snow chains
•when driving in deep snow or on a loose surface
•when it is necessary to rock a ca r free 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 other assign-
ment of tyres and wheels) can influence the function of the ESP ⇒page 243,
“Accessories, changes and replacement of parts”.
Electronic Differential Lock (EDS)*
The electronic differential lock pr events an individual wheel from
slipping.
Models fitted with ESP are equipped with electronic 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 driven 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
•Depress the accelerator carefully when accelerating on uniformly slip-
pery road surfaces, such as ice and snow. 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 or ESP warning light comes on, this may also indicate a fault in the
EDL. Please have the car inspected as soon as possible by a specialist garage.
•Changes to vehicle (e.g. on engine, on the brakes, on chassis or other assign-
ment of tyres and wheels) can in fluence the function of the EDL ⇒page 243,
“Accessories, changes and replacement of parts”.
20A5Facelift.book Page 194 Saturday, September 6, 2008 2:13 PM