The brake fluid must comply with the following standards or specifications:› VW 50114;
› FMVSS 116 DOT4.
Vehicle battery
Introduction
This chapter contains information on the following subjects:
Opening the cover
225
Checking the battery electrolyte level
226
Charging
226
Replacing
227
Disconnecting and reconnecting
227
Automatic load deactivation
227
Warning symbols on the vehicle battery
SymbolMeaningAlways wear eye protection!Battery acid is severely caustic. Always wear gloves and eye protec- tion!Keep fire, sparks, open flames and lit cigarettes well clear of the ve-
hicle battery!When charging the vehicle battery, a highly explosive gas mixture is produced!Keep children away from the vehicle battery!WARNINGThere is a risk of injuries, poisoning, chemical burns, explosions or fire when
carrying out any work on the battery and on the electrical system. The general
applicable safety rules and the following warnings must be observed without
exception.■
Keep children away from the vehicle battery.
■
Do not tilt the battery otherwise battery electrolyte may flow out of the bat-
tery vent openings. Protect your eyes by safety glasses or a face shield – risk
of blindness!
■
Always wear protective gloves, eye and skin protection when handling the
vehicle battery.
■
The battery acid is strongly corrosive and must, therefore, be handled with
the greatest of care.
■
Corrosive fumes in the air irritate the air passages and lead to conjunctivitis
and inflammation of the air passages in the lungs.
■
Battery acid corrodes dental enamel and creates deep wounds after contact
with the skin which take a long time to heal. Repeated contact with diluted
acids causes skin diseases (inflammations, ulcers, skin cracks).
■
If any battery electrolyte comes into contact with your eyes, rinse the rele-
vant eye immediately with clear water for several minutes - consult a doctor
immediately!
■
Splashes of acid on your skin or clothes should be neutralised as soon as
possible using soap suds and then rinsed with plenty of water. If you swallow
battery acid, seek immediate medical assistance!
WARNING■ It is prohibited to work with a naked flame and light.■Smoking or to carrying out any activities which produce sparks are prohibi-
ted.■
Never use a damaged vehicle battery – risk of explosion!
■
Never charge a frozen or thawed vehicle battery – risk of explosion and
caustic burns!
■
Replace a frozen vehicle battery.
■
Never jump-start vehicle batteries with an electrolyte level that is too low –
risk of explosion and caustic burns.
224General Maintenance
›Continue driving carefully to the nearest specialist garage at a maximum speed
of 80 km/h (50 mph).
Jump-starting
Introduction
This chapter contains information on the following subjects:
Jump-starting using the battery from another vehicle
243
Jump-starting in vehicles with the START-STOP system
244WARNING■ A discharged vehicle battery may already freeze at temperatures just below
0 °C. If the battery is frozen, do not carry out a jump start with the battery of
another vehicle – risk of explosion!■
Pay attention to the warning instructions relating to working in the engine
compartment » page 215.
■
The non-insulated parts of the terminal clamps must never touch each other
– risk of short circuit!
■
The jump-start cable connected to the positive terminal of the battery must
not come into contact with electrically conducting parts of the vehicle – risk of
short circuit!
■
Do not clamp the jump-start cable to the negative terminal of the dis-
charged battery. There is the risk of detonating gas seeping out the battery being ignited by the strong spark which results from the engine being started.
■
Route the jump-start cables so that they cannot be caught by any rotating
parts in the engine compartment.
■
Do not bend over the battery – risk of caustic burns!
■
The vent screws of the battery cells must be tightened firmly.
■
Keep any sources of ignition (naked flame, smouldering cigarettes, etc.)
away from the battery – risk of explosion!
■
Never jump-start vehicle batteries with an electrolyte level that is too low –
risk of explosion and caustic burns.
CAUTION■ There must not be any contact between the two vehicles otherwise current
may flow as soon as the negative terminals are connected.■
The discharged battery must be properly connected to the system of the vehi-
cle.
■
We recommend you buy jump-start cables from a car battery specialist.
Jump-starting using the battery from another vehicle
Fig. 203
Jump-starting: A – flat battery, B
– battery providing current
First read and observe the introductory information and safety warn-
ings on page 243.
The battery of another vehicle can be used to jump-start your vehicle if the en-
gine will not start because the battery is flat. Jump-start cables are required for
this purpose.
The jump-start cables must be attached in the following sequence.
›
Attach clamp
1
to the positive terminal of the discharged battery
A
» Fig. 203 .
›
Attach clamp
2
to the positive terminal of the battery supplying power
B
.
›
Attach clamp
3
to the negative terminal of the battery supplying power
B
.
›
Attach the clamp
4
to a solid metal part which is connected firmly to the en-
gine block or to the engine block itself.
Starting engine
›
Start the engine on the vehicle providing the power and allow it to idle.
›
Start the engine of the vehicle with the discharged battery.
›
If the engine does not start, terminate the attempt to start the engine after 10 seconds and wait for 30 seconds before repeating the process.
›
Disconnect the cables in exactly the reverse order to the one described above.
243Emergency equipment, and self-help
Both batteries must have a rated voltage of 12 V. The capacity (Ah) of the battery
supplying the power must not be significantly less than the capacity of the dis-
charged battery in your vehicle.
Jump-start cables
Only use jump-start cables which have an adequately large cross-section and in-
sulated terminal clamps. Observe the instructions of the jumper lead manufactur-
er.
Positive cable – colour coding in the majority of cases is red.
Negative cable – colour coding in the majority of cases is black.
Jump-starting in vehicles with the START-STOP system
Fig. 204
Engine earth: START-STOP sys-
tem
First read and observe the introductory information and safety warn- ings on page 243.
On vehicles with the START-STOP system, the jump-start cable of the charger
must never be connected directly to the negative pole of the vehicle battery, but
only to the engine earth » Fig. 204.
Towing the vehicle
Introduction
This chapter contains information on the following subjects:
Front towing eye
245
Rear towing eye
245
Vehicles with a tow hitch
246Vehicles with manual transmission may be towed in with a tow bar or a tow rope
or with the front or rear wheels raised.
Vehicles with automatic transmission may be towed in with a tow bar or a tow
rope or with the front wheels raised. If the vehicle is raised at rear, the automatic
gearbox is damaged!
A tow bar is the safest way of towing a vehicle and also minimises any shocks.
Only use a tow rope if a suitable tow bar is not available.
When towing, the following guidelines must be observed.
Driver of the tow vehicle›
Release the clutch particularly gently when starting off or depress the accelera-
tor particularly gently if the vehicle is fitted with an automatic gearbox.
›
On vehicles with a manual transmission, only push down on the accelerator
pedal once the rope is taught.
The maximum towing speed is 50 km/h.
Driver of the towed vehicle
›
Switch on the ignition so that the steering wheel is not blocked and so that the
turn signal lights, horn, windscreen wipers and windscreen washer system can be used.
›
Take the vehicle out of gear or move the selector lever into position N if the ve-
hicle is fitted with an automatic gearbox.
Please note that the brake servo unit and power steering only operate if the en-
gine is running. If the engine is not running, significantly more physical force is re- quired to depress the brake pedal and steer the vehicle.
If using a tow rope, ensure that it is always kept taught.
CAUTION
■ Do not tow start the engine – there is a risk of damaging the engine and the
catalytic converter. The battery from another vehicle can be used as a jump-start
aid » page 243 , Jump-starting .■
If the gearbox no longer contains any oil because of a defect, your vehicle must
only be towed with the driven wheels raised clear of the ground or on a special
breakdown vehicle or trailer.
■
The vehicle must be transported on a special breakdown vehicle or trailer if it is
not possible to tow in the vehicle in the way described or if the towing distance is
greater than 50 km.
■
To protect both vehicles when tow-starting or towing, the tow rope should be
elastic. Thus one should only use plastic fibre rope or a rope made out of a simi-
larly elastic material.
244Do-it-yourself