Oil level within range CThe engine must be topped up with oil so that the oil level at least reaches the
range B
.
The engine consumes a little oil. The oil consumption may be as much as 0.5 l/
1 000 km depending on your style of driving and the conditions under which you
operate your vehicle. Consumption may be slightly higher than this during the
first 5 000 kilometres.
The oil level must be checked at regular intervals. We recommend after each time
you refuel or prior to making a long journey.
We recommend maintaining the oil level within the range
A
, but not above , if
the engine has been operating at high loads, for example, during a lengthy motor-
way trip during the summer months, towing a trailer or negotiating a high moun- tain pass.
If the oil level is too low, this will be indicated by an indicator light in the instru- ment cluster » page 16,
Engine Oil . Check the oil level using the dipstick as
soon as possible. Add oil accordingly.
CAUTION
The oil level must not exceed level A » Fig. 136 - risk of damaging the exhaust
system!
Replenishing
First read and observe the introductory information and safety warn-
ings
on page 166.
›
Check the oil level » page 167.
›
Unscrew the cap of the engine oil filler opening » Fig. 134
on page 165.
›
Replenish the oil in portions of 0.5 litres in accordance with the correct specifi-
cations » page 167 .
›
Check the oil level » page 167.
›
Carefully screw on the oil filler opening cap and push the dipstick in fully.
Changing
First read and observe the introductory information and safety warn-ings
on page 166.
The engine oil must be changed according to prescribed service inter-
vals » page 147 or according to the service interval display » page 28, Service in-
terval display .
Coolant
Introduction
This chapter contains information on the following subjects:
Capacity
169
Checking the coolant level
169
Replenishing
170
The coolant consists of water with coolant additive. This mixture guarantees anti- freeze protection, protects the cooling/heater system against corrosion and pre-
vents lime formation.
Vehicles exported to countries with a mild climate are already factory-filled with
a coolant which offers antifreeze protection down to about -25 ℃. In these coun-
tries, the concentration of coolant additive should be at least 40%.
Vehicles exported to countries with a cold climate are already factory-filled with a
coolant which offers antifreeze protection down to about -35 °C. In these coun-
tries, the concentration of coolant additive should be at least 50%.
If a higher concentration of antifreeze is required for climatic reasons, the con-centration of coolant additive can be increased up to a maximum of 60% (anti-
freeze protection down to approx. -40 °C).
When refilling, only use antifreeze with the name specified on the coolant expan- sion tank » Fig. 137 on page 169.
168General Maintenance
WARNING■The engine compartment of your car is a hazardous area. The following
warning instructions must be followed at all times when working in the en-
gine compartment » page 162.■
Do not continue your journey if for some reason it is not possible to fill with
coolant under the current circumstances . Switch off the engine and seek
assistance from a specialist garage.
CAUTION
■ The concentration of coolant additive in the coolant must never be under 40%.■Over 60% of coolant additive in the coolant reduces the antifreeze protection
and cooling effect.■
A coolant additive that does not comply with the correct specifications can sig-
nificantly reduce the corrosion protection.
■
Any faults resulting from corrosion may cause a loss of coolant and can conse-
quently result in major engine damage!
■
Do not fill the coolant above the mark
A
» Fig. 137 on page 169.
■
If a fault causes the engine to overheat, we recommend visiting a specialist ga-
rage, as otherwise serious engine damage may occur.
Capacity
First read and observe the introductory information and safety warn-
ings
on page 168.
Coolant capacity (in litres)
Petrol enginesFilling level1.2 l/55 kW4.21.2 l/63, 77 kW TSI7.01.4 l/90 kW TSI7.01.6 l/77 kW4.5Diesel engineFilling level1.6 l/66, 77 kW TDI CR6.5
Checking the coolant levelFig. 137
Engine compartment: Coolant
expansion reservoir
First read and observe the introductory information and safety warn-
ings on page 168.
The coolant expansion bottle is located in the engine compartment.
Inspecting the coolant level
›
Switch off the engine.
›
Open the bonnet.
›
Check the coolant level in the coolant expansion tank » Fig. 137.
Coolant level above mark
A
No coolant may be added.
The level may also rise slightly above the
A
marking when the engine is hot.
Coolant level between markings
A
and
B
Coolant may be added.
The coolant level must lie between the
A
and
B
markings when the engine is
cold.
Coolant level below mark
B
Coolant must be added.
Top up the coolant level to between the
A
and
B
markings when the engine is
cold.
If the coolant level in the coolant expansion tank is too low, this is indicated by
the indicator light
» page 16 ,
Coolant lighting up in the instrument cluster.
We still recommend inspecting the coolant level directly at the reservoir from
time to time.
169Inspecting and replenishing
Loss of coolant
A loss of coolant is first and foremost an indication of a leak in the system. Do
not merely top up the coolant. Have the cooling system checked by a specialist
garage.
Replenishing
First read and observe the introductory information and safety warn-
ings
on page 168.
Only top up with new coolant.
›
Switch off the engine.
›
Allow the engine to cool.
›
Place a cloth over the cap of the coolant expansion tank and unscrew the cap carefully .
›
Replenish the coolant.
›
Turn the cap until it clicks into place.
Do not use an alternative additive if the specified coolant is not available in an emergency. In this case, use just water and have the correct mixing ratio of waterand coolant additive restored by a specialist garage as soon as possible.
Brake fluid
Introduction
This chapter contains information on the following subjects:
Checking the brake fluid level
170
Changing
171WARNING■ The engine compartment of your car is a hazardous area. The following
warning instructions must be followed at all times when working in the en-
gine compartment » page 162.■
If the fluid level has dropped below the MIN marking » Fig. 138 on page 170,
do not continue your journey - risk of accident! Seek help from a specialist
garage.
■
Do not use used brake fluid - the function of the brake system may be im-
paired – risk of accident!
CAUTION
Brake fluid damages the paintwork of the vehicle.
Note
The brake fluid is changed as part of a compulsory inspection service.
Checking the brake fluid level
Fig. 138
Engine compartment: Brake fluid
reservoir
First read and observe the introductory information and safety warn-
ings on page 170.
The brake fluid reservoir is located in the engine compartment.
›
Switch off the engine.
›
Open the bonnet.
›
Check the level of brake fluid in the reservoir » Fig. 138.
The level must be between the “MIN” and “MAX” markings.
170General Maintenance
WARNING■It is prohibited to work with naked flames or lights.■It is prohibited to smoke or carry out any activities that produce sparks.■
Never use a damaged vehicle battery – risk of explosion!
■
Never charge a frozen or thawed vehicle battery – risk of explosion and
chemical burns!
■
Replace a frozen vehicle battery.
■
Never jump-start vehicle batteries with insufficient acid levels – risk of ex-
plosion and chemical burns.
WARNING■ When you charge a battery, hydrogen is released, and a highly explosive gas
mixture is also produced. An explosion can be caused through sparkling over during unclamping or loosening of the cable plug while the ignition is on.■
Creating a bridge between the poles on the battery (e.g. with a metal object
or cable) creates a short circuit - risk of melting the lead bars, and risk of ex-
plosion, battery fire and acid splashes.
■
Avoid creating sparks when working with cables and electrical devices.
Strong sparking represents a risk of injury.
■
Before carrying out any work on the electrical system, switch off the engine,
the ignition and all electrical components and disconnect the negative termi-
nal (-) on the battery.
CAUTION
Improper handling of the battery can lead to damage. We recommend having all
work on the vehicle battery carried out by a specialist garage.
CAUTION
■ The vehicle battery must only be disconnected if the ignition is switched off,
otherwise the vehicle's electrical system (electronic components) can be dam-
aged. When disconnecting the battery from the electrical system, first of all dis-
connect the negative terminal (-) of the battery, followed by the positive terminal
(+).■
When connecting the battery to the electrical system, first of all connect the
positive terminal (+) of the battery, followed by the negative terminal (-). Under no
circumstances must the battery cables be connected incorrectly – risk of a cable fire.
■ Ensure that battery acid does not come into contact with the bodywork – risk of
damage to the paintwork.■
Do not place the battery in direct daylight in order to protect the vehicle battery
housing from the effects of ultra-violet light.
■
If the vehicle has not been driven for more than 3 to 4 weeks, the battery will
discharge. This is because certain electrical components consume electricity (e. g.
control units) also in idle state. Prevent the battery from discharging by discon- necting the battery's negative terminal (-) or continuously charging the battery
with a very low charging current.
■
If the vehicle is frequently used for making short trips, the vehicle battery will
not have time to charge up sufficiently and may discharge.
For the sake of the environment
A vehicle battery that has been removed is a special type of hazardous waste.
These must be disposed of in accordance with national legal regulations.
Note
You should replace batteries older than 5 years.
Opening the cover
Fig. 139
Vehicle battery: Open up the
cover
First read and observe the introductory information and safety warn- ings on page 171.
The battery is located in the engine compartment.
›
Open the battery cover in the direction of the arrow » Fig. 139.
The installation of the battery cover on the positive terminal side takes place in the reverse order.
172General Maintenance
Checking the battery electrolyte levelFig. 140
Vehicle battery: Electrolyte level
indicator
First read and observe the introductory information and safety warn-
ings on page 171.
On vehicles with a vehicle battery fitted with a colour indicator, the so-called
magic eye » Fig. 140, the electrolyte level can be determined by looking at the
change in colour.
Air bubbles can influence the colour of the indicator. For this reason carefully
knock on the indicator before carrying out the check.
› Black colour – electrolyte level is correct.
› Colourless or light yellow colour – electrolyte level too low, the battery must be
replaced.
Vehicles with a START-STOP system are fitted with a battery control unit for checking the energy level for the recurring engine start.
We recommend that you have the acid level checked regularly by a specialist ga-
rage, especially in the following cases.
› High external temperatures.
› Longer day trips.
› After each charge.
Winter time
The vehicle battery only has a proportion of the starting power in lower tempera-
tures. A discharged vehicle battery may already freeze at temperatures just be-
low 0 °C .
We therefore recommend that you have the battery checked and, if necessary, re-
charged by a specialist garage before the start of the winter.
CAUTIONFor technical reasons, on vehicles with the description “AGM”, the electrolyte lev- el cannot be checked.
Note
The battery acid level is also checked regularly by a specialist garage as part of
the inspection service.
Charging
First read and observe the introductory information and safety warn-ings
on page 171.
A properly charged vehicle battery is essential for reliably starting the engine.
›
Switch off the ignition and all of the electrical components.
›
Only when performing a “quick-charge”, disconnect both battery cables (first
“negative”, then “positive”).
›
Attach the terminal clamps of the charger to the battery terminals (red = “posi- tive”, black = “negative”).
›
Plug the mains cable of the charger into the power socket and switch on the
device.
›
After charging has been successful: Switch off the charger and remove themains cable from the power socket.
›
Only then disconnect the charger's terminal clamps.
›
Reconnect the cables to the battery (first “positive”, then “negative”).
It is not necessary to disconnect the cables of the battery if you recharge the ve-
hicle battery using low amperages (for example from a mini-charger). Refer to the
instructions of the charger manufacturer .
A charging current of 0.1 multiple of the total vehicle battery capacity (or lower) must be used until full charging is achieved.
It is necessary to disconnect both cables before charging the battery with high
amperages, known as “ rapid charging”.
The vent plugs of the vehicle battery should not be opened for charging.
173Inspecting and replenishing
WARNING“Quick-charging” the vehicle battery is dangerous and requires a special
charger and specialist knowledge.
CAUTION
On vehicles with the START/STOP system, the pole terminal of the charger must
not be connected directly to the negative terminal of the vehicle battery, but only
to the engine earth » page 191, Jump-starting in vehicles with the START-STOP
system .
Note
We therefore recommend that vehicle batteries be rapid charged by a specialist
garage.
Replacing
First read and observe the introductory information and safety warn-
ings
on page 171.
When replacing a battery, the new vehicle battery must have the same capacity,
voltage, amperage and be the same size. Suitable vehicle battery types can be
purchased from a specialist garage.
We recommend having the battery replaced by a specialist garage, where the
new vehicle battery will be installed properly and the original battery will be dis-
posed of in accordance with national regulations.
Disconnecting and reconnecting
First read and observe the introductory information and safety warn-
ings
on page 171.
On disconnecting and reconnecting the vehicle battery, the following functions
are initially deactivated or are no longer able to operate fault-free:
OperationOperating measureEnter the radio/navigation system code num-
ber» User manual of the radio
or » user manual of the naviga-
tion systemSetting the clock» page 13Data in the multifunction display are deleted.» page 25
Note
We recommend having the vehicle checked by a specialist garage in order to en-
sure full functionality of all electrical systems.
Automatic load deactivation
First read and observe the introductory information and safety warn-ings
on page 171.
The vehicle voltage control unit automatically prevents the battery from discharg-
ing when the battery is put under high levels of strain. This manifests itself by the
following.
› The idling speed is raised to allow the generator to deliver more electricity to
the electrical system.
› Where necessary, large convenience consumers such as seat heaters and rear
window heaters have their power limited or are shut off completely in the event
of an emergency.
CAUTION
■ Despite such intervention by the vehicle electric system management, the vehi-
cle battery may be drained. For example, when the ignition is switched on a long
time with the engine turned off or the side or parking lights are turned on during longer parking.■
Consumers that are supplied via a 12-V power socket can cause the vehicle bat-
tery to discharge when the ignition is switched off.
Note
Driving comfort is not impaired by consumers being deactivated. The driver is of-
ten not aware of it having taken place.
174General Maintenance
WARNING■The factory-supplied lifting jack is only intended for your model of vehicle.
Under no circumstances use it to lift heavier vehicles or other loads – risk of
injury!■
Ensure that the vehicle tool kit is safely secured in the boot.
■
Ensure that the box is always secured with the strap.
Changing a wheel
Introduction
This chapter contains information on the following subjects:
Preliminary work
184
Changing a wheel
185
Follow-up work
185
Loosening/tightening wheel bolts
185
Raising the vehicle
186
Securing wheels against theft
186WARNING■ If you are in flowing traffic, switch on the hazard warning light system and
set up the warning triangle at the prescribed distance! The national legal re-
quirements must be observed.■
Park the vehicle as far away as possible from the flow of traffic. Park on as
flat and firm a surface as possible.
■
The following instructions must be followed if the vehicle is subsequently
fitted with tyres or rims that differ from the factory-fitted ones » page 177,
New tyres .
WARNINGObserve the following instructions for lifting the vehicle.■If the wheel has to be changed on a slope, first of all block the opposite
wheel with a stone or similar object to prevent the vehicle from unexpectedly
rolling away.■
Secure the base plate of the lifting jack with suitable means to prevent pos-
sible moving. A soft and slippery ground under the base plate may move the lifting jack, causing the vehicle to fall down. It is therefore always necessary to
place the lifting jack on a solid surface or use a wide and stable base. Use a non-slip base (e.g. a rubber foot mat) if the surface is smooth, such as cobbled
stones, tiled floor, etc.
■
Only attach the lifting jack to the attachment points provided for this pur-
pose.
■
Always raise the vehicle with the doors closed.
■
Never position any body parts, such as arms or legs under the vehicle, while
the vehicle is raised with a lifting jack.
■
Never start the engine when the vehicle is raised – risk of injury.
CAUTION
■ The prescribed tightening torque of the wheel bolts for steel and light alloy
wheels is 120 Nm.■
If the wheel bolts are fastened too tightly, this can cause damage to the anti-
theft wheel bolt or the adapter.
Note
The national legal requirements must be observed when changing a wheel.
Preliminary work
First read and observe the introductory information and safety warn-ings
on page 184.
Always change a wheel on a level surface as far as possible.
The following steps must be carried out before actually changing the wheel:
›
Have all of the occupants get out of the vehicle. While changing a tyre, the oc-
cupants of the vehicle should not stand on the road (they should instead remain
behind a crash barrier).
184Do-it-yourself
›Switch off the engine.›Move the gearshift lever into
Neutral or move the selector lever for the auto-
matic gearbox into position P .›
Firmly apply the handbrake.
›
Uncouple any trailers.
›
Remove the vehicle tool kit » page 183 and the spare wheel » page 179 from
the boot.
Changing a wheel
First read and observe the introductory information and safety warn-
ings
on page 184.
›
Remove the full wheel trim » page 180 or caps » page 180 .
›
First of all slacken the anti-theft wheel bolt and then the other wheel
bolts » page 185 .
›
Jack up the vehicle until the wheel that needs changing is clear of the
ground » page 186 .
›
Unscrew the wheel bolts and place them on a clean surface (cloth, paper, etc.).
›
Remove the wheel carefully.
›
Attach the spare wheel and slightly screw on the wheel bolts.
›
Lower the vehicle.
›
Alternately tighten wheel bolts opposite (diagonally) with the wheel wrench.
Tighten the anti-theft wheel bolt last » page 185.
›
Replace the wheel trim or the caps.
Note
■
All bolts must be clean and must turn easily.■Under no circumstances grease or oil the wheel bolts!■
When fitting unidirectional tyres, ensure that the direction of rotation is cor-
rect » page 178 .
Follow-up work
First read and observe the introductory information and safety warn-
ings
on page 184.
The following steps must also be performed after changing the wheel.
› Stow and attach the replaced wheel in the spare wheel well using a special
bolt » page 179 , Spare wheel .›
Stow the tool kit in the space provided and secure using the band.
›
Check the tyre pressure on the installed spare wheel as soon as possible.
›
Have the tightening torque of the wheel bolts checked with a torque wrench
as soon as possible.
›
Replace the damaged wheel or consult a specialist garage about repair options.
Note
■ If it is determined that the wheel bolts are corroded and difficult to turn when
changing the wheel, the bolts must be replaced before checking the tightening
torque.■
Drive cautiously and only at a moderate speed until the tightening torque has
been checked.
Loosening/tightening wheel bolts
Fig. 150
Changing a wheel: Loosening
the wheel bolts
First read and observe the introductory information and safety warn- ings on page 184.
Release
›
Push the wheel wrench onto the wheel bolt to the stop 1)
.
›
Grasp the end of the wrench and turn the bolt about one turn in the direction of
the arrow » Fig. 150.
Tightening
›
Push the wheel wrench onto the wheel bolt to the stop 1)
.
1)
Use the appropriate adapter for undoing and tightening the anti-theft wheel bolts
» page 186.
185Emergency equipment and self-help