
Starting-off and Driving101
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Starting the engine
General
You can only start the engine only using an original ignition key.
•Place the gearshift lever into neutral (or place the selector lever to the position
P or N in the case of an automatic gearbox) and put on the handbrake firmly before
starting the engine.
•The clutch pedal should be fully depressed when starting the engine which
means that the starter only has to crank the engine.
•Let go of the key as soon as the engine starts otherwise there may be damage
to the starter.
The engine running noises may louder at first be louder for a short time after
starting the cold engine until oil pressure can be built up in the hydraulic valve
clearance compensation. This is quite normal and is not an operating problem.
If the engine does not start ...
You can use the battery of anothe r vehicle as a jump-start aid ⇒page 215.
It is only possible to tow-start vehicl es fitted with a manual gearbox. The tow-
starting distance must not be more than 50 metres ⇒page 217.
WARNING
•Never run the engine in non ventilat ed or enclosed areas. The exhaust
gases of the engine contain besides the odorless and colourless carbon
monoxide a poisonous gas - hazard! Carbon monoxide can cause uncon-
sciousness and death.
•Never leave your vehicle unattended with the engine running.
Caution
•The starter may only be operated (ignition key position ), if the engine is not
running. If the starter is immediately oper ated after switching off the engine, the
starter or the engine can be damaged.
•Avoid high engine revolutions, full throttle and high engine loads as long as the
engine has not yet reached it s normal operating temperature - risk of damaging the
engine!
•Vehicles which are fitted wi th an exhaust gas catalytic converter should not be
tow-started over a distance of more than 50 metres.
For the sake of the environment
Never warm up the engine when the vehicle is standing. Drive off right away.
Through this the engine reaches its operating temperature more rapidly and the
pollutant emissions are lower.
Petrol engines
These engines are fitted with a starter system which selects the correct fuel/air
mixture for every external air temperature.
•Do not operate accelerator before and when starting engine.
•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 electric al fuel pump is defect if the engine still
does not start. Check the fuse and replace it if necessary ⇒page 220.
•If the engine does not start, contact th e nearest specialist garage to obtain
professional assistance.
It may be necessary, if the engine is very hot, to slightly depress the accelerator
after the engine has started.
Diesel engines
Glow plug system
Diesel engines are equipped with a glow plug system, the preglow period being
controlled automatically in line with the coolant temperature and outside temper-
ature.
The preglow indicator light
comes on after the ignition has been switched on.
A3
NKO B5 20.book Page 101 Friday, March 2, 2007 1:46 PM

Fuel183
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
WARNING
Pay attention to any legal requirements if you do carry a spare canister in the
vehicle. We do not recommend carrying any fuel canisters in your vehicle for
safety reasons. The canister can be da maged in the event of an accident and
fuel may leak out.
Caution
•Remove any fuel which has spilled onto the paintwork of your vehicle immedi-
ately - risk of paint damage!
•Vehicles fitted with catalytic converter sh ould never be allowed to let the fuel
tank to run completely empty. An irregular supply of fuel to the engine can result in
misfiring and unburnt fuel may get into the exhaust system, which may result in
overheating and damage to the catalytic converter.
•Make sure that the valve is not pressed into the filler tube when inserting the
pump nozzle into the filler tube. Otherwis e you are unintentionally filling up the
volume, which in case of heat can cause an expansion of the fuel. This can lead to
an overflow of fuel or damage to parts of the fuel reservoir.
•T h e f u e l t a n k i s f u l l j u s t a s s o o n a s t h e pump nozzle switches off for the first time,
provided the nozzle has been operated properly. Do not continue refuelling -
otherwise the expansion volume is filled up.
Emergency release of fuel filler flap
If the electric lock is faulty, you can also unlock the fuel filler flap manually.
– Open the boot lid/luggage compartment door.
– Unscrew the clip attaching the right-hand side trim panel and pull the trim panel off the body.
– Pull on the loop in direction of arro w in order to unlock the fuel filler
flap ⇒fig. 171 .
WARNING
When unlocking the fuel filler flap manually, pay attention to sharp edges of
the body - risk of injury!
B1Z-0042HB1Z-0042H
Fig. 171 Luggage
compartment: Emer-
gency release of fuel filler
flap
NKO B5 20.book Page 183 Friday, March 2, 2007 1:46 PM

Fuses and light bulbs221
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Fuse assignment
Certain electrical components are only standard on certain vehicle model versions
or only suppliable as optional equipment for certain models.
No.Amperes
1Heatable windscreen washing nozzles5
2Tu r n s i g n a l s10
3Not assigned
4Licence plate light5
5
Instrument cluster - warning ligh ts, seat heaters, cruise con-
trol system, exterior mirror ad justment, lighting of controls
and switches, outside temperature display, air conditioning,
audible parking aid, navigation system, multifunction steer-
ing wheel
10
6Heating of the external mirror5
7ABS, EDS, ASR, ESP, cruise co ntrol system, engine electron-
ics10
Fig. 202 Schematic
representation of fuse
carrier
8Automatic headlight beam adjustment5
9Parking aid5
10CD changer, mobile phone, multifunction steering wheel5
11DVD player7,5
12Power supply for diagnostic socket10
13Brake lights10
14Central locking control unit, interior lighting10
15Instrument cluster, air cond itioning, automatic gearbox,
exterior mirror adjustment memory and navigation system10
16ESP5
17Two-way radio system, special vehicles (police etc.)10
18Right main beam10
19Left main beam10
20Low beam on the right15
21Low beam on the left15
22Parking light on the right5
23Parking light on the left5
24Windscreen washer system, windscreen wiper pump and
intermittent switch25
25Fan for fresh air, the air co nditioning unit, Climatronic30
26Rear window heating, recirculated air mode30
27Not assigned
28Fuel pump, diesel additional pump20
29Engine control20
30Electric sliding/tilting roof/DVD player20/7,5
No.Amperes
NKO B5 20.book Page 221 Friday, March 2, 2007 1:46 PM