Page 158 of 248

152 Driving and operationFor vehicles with manual transmission
automated 3, the control indicator flashes
for a few seconds when the ignition is
turned off when the hand brake is not
applied. Anti-lock brake system (ABS
u)
ABS prevents the wheels from locking.
ABS starts to regulate brake pressure as
soon as a wheel shows a tendency to lock.
The vehicle remains steerable, even during
hard braking.
ABS control is made apparent though a
pulse in the brake pedal and the noise of
the regulation process.
For optimum braking, keep the brake
pedal fully depresse d throughout the
braking process, despite the fact that the
pedal is pulsating. Do not reduce the
pressure on the pedal.
Picture no: 17895s.tif
Control indicator u for ABS
It illuminates for a few seconds when
ignition is switched on. Once the control
indicator goes out, the system is ready for
operation.
If the control indica tor does not go out
after a few seconds, or if it illuminates while
driving, there is a fault in the ABS. The
brake system remains operational without
ABS regulation.
Adaptive brake lamp 3
During full-on braking, all three brake
lamps flash for the duration of ABS control. Self testing
When the engine is started and the vehicle
starts off, the system performs a self-check,
which may be audible.
Fault
Have cause of fault remedied by a
workshop. The system’s integrated self
diagnostics allow faults to be quickly
remedied.
9 Warning
If there is a fault in the ABS, the wheels
may be liable to lock due to braking that
is heavier than normal. The advantages
of ABS are no longer available. During
hard braking, the vehicle can no longer
be steered and may swerve.
Page 168 of 248

162 Driving and operation
Picture no: 17923s.tif
Stowage of coupling ball bar
Place coupling ball bar in bag and clip onto
the tool kit below the spare wheel 3159,
Fig. 14195 S.
On vehicles with tyre repair kit 3, the
coupling ball bar is stored in the left
stowage compartment beneath the floor
cover in the luggage compartment - see
Fig. above.
Caravan/trailer towingCaravan and trailer loads
1)
The permissible caravan/trailer loads are
vehicle and engine-dependent maximum
values which must not be exceeded. The
actual caravan/trailer load is the difference
between the actual gross weight of the
caravan/trailer and the actual coupling
socket load with the caravan/trailer
coupled.
The permissible caravan/trailer loads are
specified in the vehi cle documents. In
general, they are valid for gradients up to
maximum 12% The permitted caravan/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 because of the air becoming
thinner, therefore reducing climbing ability,
the permitted towing weight also
decreases by 10 % for
every 1000 metres of
additional altitude. The towing weight
does not have to be reduced when driving
on roads with slight inclines (less than 8 %,
e.g. motorways).
The permissible gross train weight must not
be exceeded. This weig ht is specified on
the identification plate 3218. 1)Observe national regulations.
Page 170 of 248

164 Driving and operationIf the trailer/caravan starts to sway, drive
more slowly, do not attempt to correct the
steering and brake sharply if necessary.
If it is necessary to apply the brakes fully,
depress the brake pedal as hard as
possible.
Remember that the braking distance for
vehicles towing carava ns/trailers with and
without brake is always greater than that
for vehicles not towing a caravan/trailer.
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 3228. Starting on inclines
For vehicles with ma
nual transmission,
the most favourable engine speed
when starting off on an incline is
between 2500 and 3000 rpm for petrol
engines and between 2000 and 2500 rpm
for diesel engines. Hold engine speed
constant, engage clutch gradually (let slip)
– release hand brake – and open throttle. If
possible, the engine speed should not drop
during this procedure.
For vehicles with ma nual transmission
automated 3 in Automatic mode simply
apply full gas. Before starting off under extreme
operating conditions, switch off
unnecessary consumers.
Page 171 of 248

165
Self-help, vehicle care
Self-help, vehicle care
Diesel fuel system, bleeding If the tank is allowed to run dry, the diesel
fuel system must be bled. Turn over the
ignition three times for 15 seconds at a
time. Then start the engine for a maximum
of 40 seconds
1). Repeat this process after
no less than 5 seconds. If the engine fails to
start, seek the assistance of a workshop.
Picture no: 16109s.tif
Bonnet Pull the release lever lo cated on the driver’s
side below the instru ment panel and push
it back to its original position.
Diesel fuel system, bleeding ............... 165
Bonnet .................................................. 165
Starting the engine with jump
leads 3............................................. 166
Towing .................................................. 168
Warning triangle ¨ 3,
First-aid kit +3................................. 171
Jack £ 3 and vehicle tools 3............ 171
Spare wheel 3...................................... 172
Changing wheels ................................. 174
Tyre repair kit 3................................... 178
Electrical system .................................. 181
Fuses and the most important circuits they protect ....................................... 182
Bulb replacement ................................ 185
Vehicle care.......................................... 196
1)For technical reasons, only 30 seconds are
possible on engines Y 17 DT and Z 17 DTH
Page 172 of 248
166 Self-help, vehicle care
Picture no: 17883s.tif
Pull the safety catch and open the bonnet.
Any dirt or snow on the bonnet can slide
down toward the windscreen when the
bonnet is opened and block the air intake
3127.
Picture no: 14733s.tif
Secure the bonnet support. Before closing
the bonnet, press the support into the
holder.
Lower the bonnet and allow it to drop into
the catch. Check that the bonnet is
engaged.
Starting the engine with jump
leads
3
Do not use a rapid charger or push or two
the vehicle to get it started.
A vehicle with a discha rged battery can be
started using jump leads and the battery of
another vehicle.
9 Warning
Starting the engine with jump leads must
be carried out with the utmost caution.
Any deviation from the following
instruction may lead to injury or damage
due to the explosion of the batteries and
to damage of the electrics in both
vehicles.
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167
Self-help, vehicle care
Picture no: 15286a.tif
zNever expose the battery to naked
flames or sparks.
z A flat battery can fr eeze at temperatures
around 0 C. Defrost the battery before
connecting up jump leads.
z Do not allow battery fluid to come into
contact with eyes, skin, fabrics or
painted surfaces. The fluid contains
sulphuric acid which can cause injuries
and damage in the event of direct
contact.
z Wear eye protection and protective
clothing when handling a battery. z
Use a booster battery with the same
voltage (12 volts). Its capacity (Ah) must
not be much less than that of the
discharged battery.
z Use jump leads with insulated terminals
and a cross section of at least 16 mm
2
(25 mm
2 for diesel engines).
z Do not disconnect the discharged
battery from the vehicle.
z Switch off all unnecessary electrical
consumers.
z Do not lean over the battery during jump
starting.
z Do not allow the terminals of one lead to
touch those of the other lead.
z The vehicles must not come into contact
with each other during the jump starting
process.
z Apply the handbrake. Gear lever in
neutral.
Picture no: 16485s.tif
Lead connection order:
1. Connect the red lead to the positive
terminal 1 of the booster battery.
2. Connect the other red lead to the positive terminal 2 of the discharged
battery.
3. Connect the black lead to the negative terminal 3 of the booster battery.
4. Connect the other end of the black lead 4 to a vehicle grounding point, such
as the engine block or a screw
connection in the engine suspension.
Connect as far away from the
discharged battery as possible.
Page 174 of 248
168 Self-help, vehicle careRoute the leads so that they cannot catch
on rotating parts in the engine
compartment.
To start the engine:
1. Start the engine of the vehicle providing the jump start.
2. After 5 minutes, start the other engine. Start attempts shou ld be made at
intervals of 1 minute not last longer
than 15 seconds.
3. Allow both engines to idle for approx. 3 minutes with the leads connected.
4. Switch on electrical consumers (e.g. light, heated rear window) of the vehicle
receiving the jump start.
5. Reverse above sequence exactly when removing leads.
Picture no: 17896s.tif
Towing Towing your own vehicle
Disengage cap at bottom and remove
downwards.
Picture no: 14198s.tif
The towing eye is in the tool kit 3 in the
luggage compartment underneath the
spare wheel 3, see Fig. above, or for
versions with tyre repair kit 3, in the
storage compartment underneath the floor
cover, see Fig. 17918 S.
Page 175 of 248
169
Self-help, vehicle care
Picture no: 17918s.tif
Screw in the towing eye anticlockwise as far
as it will go until it stops in a horizontal
position.
Attach a tow rope 3 – or better still a tow
rod 3 – to the eye.
The towing eye may only be used for
towing and not for recovery of the vehicle. Switch on ignition to release steering
column lock and to permit operation of
brake lamps, horn an
d windscreen wipers.
Gear lever in neutral.
Picture no: 17897s.tif
When the engine is not running,
considerably more force is needed to brake
and steer.
To prevent the entry of exhaust fumes from
the towing vehicle, switch on the air
recirculation 3 and close the windows.
Contact a workshop for assistance.
Caution
Drive slowly. Do not drive jerkily.
Excessive tractive force can damage
the vehicle.