Checking and refilling levels207
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
•
Before opening the bonnet to check the brake fluid level, read and
observe the warnings ⇒page 193.
•
Brake fluid should be stored in the closed original container in a safe
place out of reach of children. This represents a toxic danger.
•
Have the brake fluid changed every two years at the latest. Heavy use
of the brakes may cause a vapour lock if the brake fluid is left in the system
for too long. This would seriously affect the efficiency of the brakes and the
safety of the vehicle. This may be an accident risk.Caution
Brake fluid could damage the paintwork. Wipe off any brake fluid from the
paintwork immediately.
For the sake of the environment
Brake fluid must be drained and disposed of in the proper manner observing
environmental regulations.
BatteryWarnings on handling the battery
WARNING
Always be aware of the danger of injury and chemical burns as well as the
risk of accident or fire when working on the battery and the electrical
system:•
Wear eye protection. Protect your eyes , skin and clothing from acid and
particles containing lead.
•
Battery acid is very corrosive and caustic. Wear protective gloves and
eye protection. Do not tilt the batter ies. This could spill acid through the
vents. Rinse battery acid from eyes immediately for several minutes with
clear water. Then seek medical care immediately. Neutralize any acid
splashes on the skin or clothing with a soapy solution, and rinse off with
plenty of water. If acid is swallowed by mistake, consult a doctor immedi-
ately.
•
Fires, sparks, naked lights and smoki ng are prohibited. When handling
cables and electrical equipment, avoid causing sparks and electrostatic
WARNING (continued)
Wear eye protection
Battery acid is very corrosive and caustic. Wear protec-
tive gloves and eye protection!
Fires, sparks, naked lights and smoking are prohibited!
A highly explosive mixture of gases is released when the
battery is under charge.
Keep children away from acid and batteries!
leon_ingles Seite 207 Donnerstag, 20. Oktober 2005 12:14 12
Checking and refilling levels
208charge. Never short the battery terminals. High-energy sparks can cause
injury.•
A highly explosive mixture of gases is released when the battery is
under charge. The batteries should be charged in a well-ventilated room
only.
•
Keep children away from acid and batteries.
•
Before working on the electrical system, you must switch off the
engine, the ignition and all consumers. The negative cable on the battery
must be disconnected. When a light bulb is changed, you need only switch
off the light.
•
Deactivate the anti-theft alarm by unlocking the vehicle before you
disconnect the battery! The alarm will otherwise be triggered.
•
When disconnecting the battery from the vehicle electrical system,
disconnect first the negative cable and then the positive cable.
•
Switch off all electrical consumers before reconnecting the battery.
Reconnect first the positive cable and then the negative cable. Never
reverse the polarity of the connections. This could cause an electrical fire.
•
Never charge a frozen battery, or one which has thawed. This could
result in explosions and chemical burns. Always replace a battery which
has frozen. A flat battery can freeze at temperatures around 0
°C.
•
Ensure that the vent hose is always connected to the battery.
•
Never use a defective battery. This may be fatally explosive. Replace a
damaged battery immediately.Caution
•
Never disconnect the battery if the ignition is switched on or if the engine
is running. This could damage the electrical system or electronic compo-
nents.
•
Do not expose the battery to direct sunlight over a long period of time, as
the intense ultraviolet radiation can damage the battery housing.
•
If the vehicle is left standing in cold conditions for a long period, protect
the battery from frost. If it “freezes” it will be damaged.
Checking the electrolyte level
The electrolyte level should be checked regularly in high-
mileage vehicles, in hot countries and in older batteries.– Open the bonnet and open the battery cover at the front ⇒ in
“Safety instructions on working in the engine compartment” on
page 193 ⇒ in “Warnings on handling the battery” on
page 207.
– Check the colour display in the “magic eye” on the top of the battery.
– If there are air bubbles in the window, tap the window gently until they disperse.The position of the battery is show n in the corresponding engine compart-
ment diagram ⇒page 252.
The round window (“magic eye”) on the top of the battery changes colour,
depending on the charge level and electrolyte level of the battery.
If the colour in the window is colourless or bright yellow, the electrolyte level
of the battery is too low. Have the battery checked by a qualified workshop.
The colours green and black are used by the workshops for diagnostic
purposes.
WARNING (continued)
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If and when217
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
Note
•
Seek professional assistance if the repair of a tyre puncture is not
possible with the sealing compound.
Wheel changePreparation work
What you must do before changing a wheel.– If you have a flat tyre or puncture, park the vehicle as far away from the flow of traffic as possible. Choose a location that is as
level as possible.
– All passengers should leave the vehicle. They should wait in a safe area (for instance behind the roadside crash barrier).
– Switch off the engine. Switch on the hazard warning lights.
–Apply the handbrake firmly.
–Engage the first gear, or put the selector lever to position P for
those vehicles with an automatic gearbox.
– If you are towing a trailer, unhitch it from your vehicle.
–Take the vehicle tools and the spare wheel out of the luggage
compartment.
WARNING
Put the hazard warning lights on and place the warning triangle in position.
This is for your own safety and also warns other road users.
Caution
If you have to change the wheel on a gradient, block the wheel opposite the
wheel being changed by placing a stone or similar object under it to prevent
the vehicle from rolling away.
Note
Please observe legal requirements when doing so.Changing a wheelChange the wheel as described below
– Remove the wheel cover. See ⇒page 218, fig. 146 .
–Slacken the wheel bolts.
– Raise the car wi th the jack in the corresponding zone.
– Take off the wheel and then put on the spare wheel.
– Lower the vehicle.
– Tighten the wheel bolts firmly i n d i a go na l s e q u e n ce wi t h t h e b ox
spanner.
–Replace the cover.
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If and when
226Fuses on left side of dash panelFuses
Number Electrical equipment Amperes
1 Diesel and petrol engine control unit 10
2 ABS/ESP control unit 5
3 Airbag control unit 5
4 Heating controls, pressure sensor, heated seats, ESP switch, reverse gear 5
5 Left and right headlamp motor, dimmer, GDL control unit 5
6 Gateway, Automatic gearbox lever 5
7 Windscreen relay, heated mirrors, VDA telephone 5
8 Trailer control unit 5
9 Vacant
10 Vacant
11 Vacant
12 Door control unit (autolock K3) 10
13 Diagnosis, light switch, brake 10
14 Automatic gearbox 5
15 Cable control unit 7,5
16 Heating controls / Air and air conditioning 10
17 Rain sensor 5
18 Automatic gearbox selector lever, parking aid control unit 5
19 Vacant
20 ESP control unit 5
21 D2L engine (20 147 kW) 10
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If and when227
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
22
Heater 40
23 Door control unit 30
24 Cigarette lighter 25
25 Cable control unit 25
26 12 V power sockets 30
27 FSI capacity gauge control unit, fuel relay, EKP 1.6 relay 15
28 Comfort system control unit (without autolock 4F8) 25
29 Flowmeter, engine 10
30 Prewired 20
31 Vacuum pump 20
32 Door control unit 30
33 Sunroof 30
34 Comfort system control unit (autolock 4 K3) 25
35 Alarm sensor, horn 5
36 Headlight washer system 20
37 Seats 30
38 Engine 10
39 Automatic gearbox 20
40 Heater 40
41 Tailgate, power 15
42 Cable control unit 15
43 Trailer control unit 15
44 Trailer control unit 20
45 Trailer control unit 15
Number
Electrical equipment Amperes
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If and when
230Position in engine compartment: side boxFuses
Some of the electrical items listed in the table are only fitted on certain
models or are optional extras.
Please note that the above list, while corr ect at the time of printing, is subject
to alterations. 29
Electric windows (front and back)
50
Electric windows (front) 30
30 Contact relief-relay 40
Number Electrical equipment Amperes
B1 Alternator < 140 W
150
Alternator > 140 W 200
C1 Power steering 80
D1 Multi-terminal voltage supply “30”. Internal fuse box 100
E1 Ventilator < 500 W / Ventilator > 500 W 50 / 80
F1 PTCs (Supplementary electrical heating using air) 100
G1 Trailer fuse voltage supply in internal fuse box 50
H1 Central locking control unit (4F8 with autolock)
Number
Electrical equipment Amperes
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If and when241
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
How to jump startIn ⇒ fig. 172, the flat battery is A and the charged battery B.
Jump lead terminal connections
– Switch off the ignition on both vehicles ⇒.
1. Connect one end of the red jump lead to the positive ⇒fig. 172
terminal of the vehicle with the flat battery ⇒.
2. Connect the other end of the red jump lead to the positive terminal in the vehicle providing assistance.
3. Connect one end of the black jump lead to the negative terminal on the battery of the vehicle providing assistance. 4. Connect the other end of the black jump lead to a solid metal
component which is bolted on to the engine block, or onto the
engine block itself of the vehicle with the flat battery. Do not
connect it to a point near the battery ⇒.
5. Position the leads in such a way that they cannot come into contact with any moving parts in the engine compartment.
Starting
6. Start the engine of the vehicle with the boosting battery and let
it run at idling speed.
7. Start the engine of the car with the flat battery and wait one or two minutes until the engine is “running”.
Removing the jump leads
8. Before you remove the jump leads, switch off the headlights (if they are switched on).
9. Turn on the heater blower and rear window heater in the vehicle with the flat battery. This helps minimise voltage peaks which are
generated when the leads are disconnected.
10. When the engine is running, disconnect the leads in reverse order to the details given above.
Connect the battery clamps so they ha ve good metal-to-metal contact with
the battery terminals.
If the engine fails to start, switch off the starter after about 10 seconds and
try again after about half a minute.
Fig. 172 How to connect
the jump leads
A+
A+
A-
AX
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If and when
244
Notes for the driver of the towing vehicle
– Drive slowly at first until the to w-rope is taut. Then accelerate
gradually.
– Begin and change gears cautiously. If you are driving an auto- matic vehicle, accelerate gently.
– Remember that the brake servo and power steering are not working in the vehicle you are towing. Brake earlier than you
would normally, but with a more gentle pressure on the brake.
Notes for the driver of the towed vehicle
– Ensure that the tow-rope remains taut at all times when towing.
Fitting the towing eye
– Take the towing ring and the wheel spanner out of the vehicle tool kit.
– Pull the lower front cover down and leave the cover hanging on the vehicle.
– Remove the cover of the screw hole, insert a screwdriver into the lower slot and lever gently.
– Screw the towing eye as shown by arrow anti-clockwise to the
limit position in the front ⇒page 243, fig. 173 or rear
⇒ page 243, fig. 174 threaded hole.
– Use the wrench for leverage to tighten the towing eye.Tow-rope or tow-bar
It is easier and safer to tow a vehicle with a tow-bar. You should only use a
tow-rope if you do not have a tow-bar. A tow-rope should be slightly elastic to reduce the loading on both vehicles.
It is advisable to use a tow-rope made of synthetic fibre or similarly elastic
material.
Attach the tow-rope or the tow-bar only to the towing eyes provided or a
towing bracket.
Driving style
Towing requires some experience, espec
ially when using a tow-rope. Both
drivers should be familiar with the te chnique required for towing. Inexperi-
enced drivers should not attempt to tow-start or tow away another vehicle.
Do not pull too hard with the towing vehicle and take care to avoid jerking the
tow-rope. When towing on an unpaved road, there is always a risk of over-
loading and damaging the anchorage points.
The ignition of the vehicle being towed must be switched on to prevent the
steering wheel from locking and also to allow the use of the turn signals,
horn, windscreen wipers and washers.
As the brake servo does not work if the engine is not running, you must apply
considerably more pressure to the brake pedal than you normally would.
As the power assisted steering does not work if the engine is not running, you
will need more strength to steer than you normally would.
Towing vehicles with an automatic gearbox
•
Put the selector lever into position “N”.
•
Do not drive faster than 50 km/h when towing a vehicle.
•
Do not tow further than 50 km.
•
If a breakdown vehicle is used, the vehicle must be towed with the front
wheels raised.Note
•
Observe legal requirements when towing or tow-starting.
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