Automatic gearbox
103
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
A functional fault can have the following effect:
The gearbox only shifts into certain gears.
The reverse gear
R cannot be used.
The manual shift programme (Tiptronic) is switched off in the emergency mode.
If the gearbox has switch
ed over to emergency mode, drive to the nearest
specialist garage in order to have the fault rectified.Selector lever-emergency unlockingIn case of interruption of the power supply (e
.g. flat vehicle battery, defective fuse) or
defect of the selector lever lock, the select
or lever can no longer be shifted from the
position
P in the normal way and the vehicle ca
n no longer be moved. The selector
lever must be unlocked in case of emergency. – Apply the handbrake firmly.– Carefully pull up the front left and right cover.– Pull up rear cover.– Use the finger to press the yellow plastic part downwards
fig. 103
.
– Simultaneously press the shiftlock button in
the handle of the selector lever in the
position
N9).
Tow-starting and towing vehicle Tow-starting a vehicle It is not possible to tow-start or push-sta
rt vehicles fitted wi
th automatic gearbox.
you can use jump-start
cables connected to the battery of another vehicle for starting
your car if the vehicle battery is flat
page 190.
Towing a vehicle Please pay attention to the following information if it comes necessary to tow-in your car
page 192.
9)If the selector lever is moved again into the position
P, it is once again blocked.Fig. 103 Selector lever-emergency unlocking
s3j8.a.book Page 103 Tuesday, April 20, 2010 1:10 PM
Breakdown assistance
190
Not positioning the lifting jack at the specified points can result in damage
to the vehicle. The jack can also slip off if it does not have sufficient grip - risk of injury!
Never start the engine if the vehicle is lifted - risk of accident.
Never lie under the vehicle if the vehicle is only lifted with the vehicle lifting
jack.
It is important to support the vehicle with suitable supporting blocks if you
wish to work under the lifted vehicle - risk of injury!Securing wheels against being stolen* You need a special adapter for sl
ackening the safety wheel bolts.
– Pull off the full wheel trim/cap from the wheel hub or cap from the safety wheel
bolt.
– Insert the adapter with its toothed side
into the inner toothing of the head of
the safety wheel bolt .
– Insert the wheel wrench fully onto the adapter .– Slacken the wheel bolt, or tighten it firmly
page 189.
– Reinstall the full wheel trim/wheel cap afte
r removing the adapter or place the cap
onto the safety wheel bolt.
– Have the
tightening torque
checked
with a torque wrench as soon as possible.
Steel and light alloy wheels must be tightened to a tightening torque of
120 Nm
.
The safety wheel bolts on vehicles fitted with them (one safety wheel bolt per wheel) can only be loosened or tighten
up by using the adapter provided.
It is meaningful to note th
e code number hammered into the rear side of the adapter
or the rear side of the safety wheel bolts. You can purchase a replacement adapter from a specialist garage, if necessary, by quoting this number. We recommend that you always carry the ad
apter for the wheel bolts with you in the
vehicle. It should be stow
ed in the vehicle tool kit.
Caution
Damage can occur to the adapter and safety
wheel bolt if the safety wheel bolt is
tightened up too much.
On steel wheels, the theft-deterrent wheel
bolt must always be installed in the
hole, which is close to the valve. Otherwise
the full wheel trim cannot be mounted and
the full wheel trim can be damaged during the assembly.
Note
The set of safety wheel bolts can be
obtained from a specialist garage.
Jump-startingInitial stepsYou can use the battery of another vehicle fo
r jump-starting yours if the engine does
not start because the battery on your vehicle
is flat. You will require jump-start cables
for this purpose. 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 discharged
battery in your vehicle.
WARNING (continued)
Fig. 156 Safety wheel bolt with adapter
ABAA
AB
s3j8.a.book Page 190 Tuesday, April 20, 2010 1:10 PM
Breakdown assistance
191
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Jump-start cables Only use jump-start cables which have an
adequately large cross-section and insu-
lated terminal clamps. Plea
se pay attention to the manufacturer's instructions.
Positive cable -
colour coding in the
majority of cases red.
Negative cable -
colour coding in the
majority of cases black.
WARNING
A discharged battery may already freeze
at temperatures just below 0°C. In
case of frozen battery carry out no jump-starting - risk of explosion! Also after thawing of the battery there is a risk
of caustic burns due to leaking acid.
Replace the frozen battery.
Please pay attention to the warning instructions relating to working in the
engine compartment
page 166.
Note
There must not be any contact between
the two vehicles otherwise current may
flow as soon as the negati
ve terminals are connected.
The discharged battery must be properly
connected to the system of the vehicle.
Switch off any installed telephone and also pay attention to the instructions for use
of the telephone in such a situation.
We recommend that you purchase the jump-starting cable in the specialist shops
of the battery manufacturers.
Start engineIt is important to connect the jump-start cables in the correct order.Connecting positive terminals– Attach one end to the positive terminal
fig. 157
of the discharged battery
.
– Attach the other end to the positive te
rminal of the battery supplying the power
.
Connecting negative term
inal and engine block
– Attach one end to the negative termin
al of the battery supplying the power .
– Attach the other end to a solid metal
part which is connected firmly to the
engine block, or to the engine block itself
.
Starting the engine– Start the engine of the vehicle providing
current and run the engine at idling speed.
– Now start the engine of the vehicle with the discharged battery. – Interrupt the attempt at starting an engine after 10 seconds if it does not start right
away and wait for about 30 seconds before repeating the attempt.
– Disconnect the cables on the engine in exactly the
reverse order
they were
connected up.
Fig. 157 Jump-starting using the battery from another vehicle: A - flat vehicle battery, B - battery providing current
A1
AA
A2
AB
A3
AB
A4
s3j8.a.book Page 191 Tuesday, April 20, 2010 1:10 PM
Breakdown assistance
192
WARNING
The non-insulated parts of the terminal clamps must never make contact
with each other. Furthermore, the cable connected to the positive terminal of the battery must not come into contact with electrically conducting parts of the vehicle - risk of a short circuit!
Do not affix the jump starting cables to the negative terminal of the
discharged 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.
Do not affix the cable end to parts of the fuel and brake system.
Run the jump-start cables so that they cannot be caught by any rotating
parts in the engine compartment.
Do not bend over the batteries - 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 an explosion!
Never jump-start the batteries which have a too low electrolyte level - risk
of explosion and caustic burns!Jump-starting on vehicles with the “START-STOP” systemOn vehicles with the “START-STOP” syst
em, the jump-starting cable must not be
connected directly to the negative terminal
of the vehicle battery, but only to the
engine earth
fig. 158
.
Tow-starting and towing vehicleGeneralPlease pay attention to the following instru
ctions if you are going to use a tow rope:
Driver of the towing vehicle– Do not drive off until the tow rope is taught. – Release the clutch particularly gently when starting off.Driver of the towed vehicle– Switch the ignition on so that the steeri
ng wheel is not blocked and you can also
operate the turn signal lights, the headlight flasher, the windscreen wipers and windscreen washer system.
– Take the vehicle out of gear or move the selector lever into position
N if your
vehicle is fitted with an automatic gearbox.
– Note that the brake servo unit and power steering only operate if the engine is
running. You will require significantly greater physical force to depress the brake pedal and to steer the vehicle
if the engine is not running.
– Ensure that the tow rope is always kept taught. Tow rope or tow bar A tow
bar
is safest way of towing a vehicle and also minimizes any shocks. You can use
a tow
rope
only if a suitable tow bar is not available.
The tow rope must be elastic to protect the
vehicle. Thus one shou
ld only use plastic
fibre rope or a rope made out
of a similarly elastic material.
Attach the tow rope or the tow bar only to the
towing eyes
provided for this purpose
page 193, “Front towing eye” and
page 193, “Rear towing eye”.
Driving style Towing another vehicle requires a certain am
ount of practice. Both drivers should be
familiar with the particular points about to
wing a vehicle. Unskilled drivers should not
attempt to tow in another vehicle or to be towed in.
A4
Fig. 158 Jump-starting - START-STOP system
s3j8.a.book Page 192 Tuesday, April 20, 2010 1:10 PM
Breakdown assistance
193
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
One should be constantly vigi
lant not to allow impermissi
bly high towing forces or
jerky loadings. There is always a risk of excessive stresses and damage resulting at the points to which you attach the tow rope or
tow bar when you attempt to tow a vehicle
which is not standing on a paved road.
Caution
If the gearbox of your vehicle no longer
contains any oil because of a defect, your
vehicle must only be towed in with the driven wheels raised clear of the ground, or on a special vehicle transporter or trailer.
Note
Please comply with any national legal provisions particularly regarding the
switched on signal systems, when towi
ng in or tow-starting another vehicle.
The tow rope must not be twisted as it ma
y in certain circumstances result in the
front towing eye being unscrewed out of your vehicle.Front towing eye The towing eye is stored in the box for the vehicle tool kit.Fig. 159 Front bumper: Cover
/ installing the towing eye
– Press on the left half of the cover at the point of the arrow
fig. 159
- left.
– Pull the cover out of the front bumper.
– Screw in the towing eye by hand to the left up to the stop
fig. 159
- right and
tighten it as much as po
ssible. For tightening, we
recommend that you use for
example the wheel wrench*, the lashing eye of another vehicle or a similar object which you can push through the eye.
– In order to reinstall the cover after screwing out the towing eye, insert it in the
mounts and then press on the right side of the cover. The cover must engage firmly.Caution
The towing eye must always be screwed in
fully and firmly tightened, otherwise the
towing eye can tear when towing in or tow-starting.Rear towing eyeThe rear towing eye is located below the rear bumper on the right
fig. 160
.
Tow-starting a vehicleIf the engine does not start, we generally do
not
recommend
to tow-start your vehicle.
One should attempt to start the engine using jump start cables
page 190 or call on
the services of the SERVICE mobile.If your vehicle has to be towed:– Engage 2nd or 3rd gear with the vehicle stationary. – Depress the clutch pedal fu
lly and keep it depressed.
Fig. 160 Rear towing eye
s3j8.a.book Page 193 Tuesday, April 20, 2010 1:10 PM