overheating AUDI Q2 2021 Owner´s Manual

Instruments and controls

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26
14
14
- Driver information system (ana­
logue instrument cluster)* ....
-Warning and indicator Lamps ..

(f)
Status line (displayed on one
or
two
lines)
(?) Reset button for trip recorder ...
(7) Speedometer/convenience display

(§)
Fuel gauge
(9) Speedometer

@
Additional display on left (two sep­
arate sections in extended view)
Further warning/indicator lamps may appear in
the rev counter
(2),
in the speedometer
(f),
in the
status line (5) and above or below the central
area
@,
depending on the instrument cluster

version.

Most of the illustrations on the following pages
show the colour analogue instrument cluster*.
The display and position of the elements may be
different on the monochrome instrument cluster
or the Audi virtual cockpit*.
1) Note
- Depending on the vehicle equipment, the
instrument lighting (for dials and needles)
may be switched on when the ignition is on
and the vehicle's lights are off. The illumi­
nation of the diaLs and needles is automati­
cally reduced as it becomes dark outside
and is eventually switched off altogether.
This function is intended to remind the driv­
er to switch on the dipped headlights in
good time.
- You can change the measurement units for
temperature or speed, etc. via the infotain­
ment system
^>page
255.
Coolant temperature gauge
The coolant temperature gauge
(T) ^>page
12,
Fig.
41 ^>page
12, Fig. 3 only works when the ig­
nition is switched on. In order to avoid possible
damage to the engine, please read the following
notes for the different temperature ranges.
Engine cold
If the LEDs are still in the lower range of the dis­
play, this indicates that the engine has not yet
reached operating temperature. Avoid high en­
gine speeds, full acceleration and heavy engine

loads.

Normal temperature
The LEDs will settle somewhere in the centre of
the display once the engine has reached operat­
ing temperature. If the warning lamp || lights
up in the instrument cluster display, the coolant
temperature is too high
<^>page
30.
© CAUTIO
- Additional lights and other accessories in
front of the air inlet reduce the cooling ef­
fect of the radiator. At high outside temper­
atures and high engine loads, there is a risk
of the engine overheating.
- The front spoiler also ensures proper distri­
bution of the cooling air when the vehicle is

moving.
If the spoiler is damaged this can
reduce the cooling effect, which could cause
the engine to overheat. Obtain professional
assistance.
® Note
Applies to: vehicles with diesel engine
These engines are so efficient that they may
not reach their full operating temperature in
very cold weather. This is quite normal and no
cause for concern.
Rev counter

The
rev counter indicates the number of engine
revolutions per minute.
The start of the red zone on the dial indicates the
maximum engine speed which may be used brief­
ly in all gears when the engine is warm and after
it has been run in properly. However, it is advisa­
ble to change up a gear or move the selector lev­
er to D/S (or
lift your
foot
off
the accelerator) be­
fore the needle reaches the red zone. •
13

Instruments and controls
© CAUTIOI
The rev counter needle (2)
^>page
12, Fig.
41
^>page
12, Fig. 3 must only ever briefly go in­
to the red zone on the scale; otherwise there
is a risk of engine damage. The start of the
red zone on the dial is different for some en­
gine versions.

(•)
For
the sake of the environment
Changing up a gear early will help you to save
fuel and minimise engine noise.
Fuel gauge
The gauge
(§) ^>page
12, Fig. 4
I ^>page
12,
Fig. 3 only works when the ignition is switched

on.
When the gauge reaches the reserve zone, a
red LED will light up and the indicator lamp
Q3

will appear
^>page
35. The LED will flash in red
if the fuel Level is very Low.
The tank capacity of your vehicle is given in the
Technical data section
^>page
343.
© CAUTION
Never run the tank completely dry. If there is
an irregular fuel supply, misfiring can occur.
Unburnt fuel can then enter the exhaust sys­

tem.
This can Lead to overheating and dam­
age to the catalytic converter.
Mileage recorder
8:20
17.02.2016

Fig.
5 Instrument cluster: Mileage recorder
Trip recorder/odometer
The trip recorder shows the distance that has
been travelled since
it
was last reset. It is used to
measure individuaLjourneys.
The trip recorder can be reset to zero by pressing
the reset button (?)
<=>page
12, Fig.
41
cépage
12, Fig. 3.
The odometer records the vehicle's total mileage.
Fault display
If there is a fault in the instruments, the letters
DEF appear in the trip recorder display. Have the
fault rectified as soon as possible.
Display
Applies to: vehicles without driver information system
8:20
&
5245
450km
km 150.3

+22.5t1

Fig.
6 Instrument cluster: Display without driver informa­
tion system
Depending on the vehicle equipment, the instru­
ment cluster display shows the following (as ap­
plicable):
- Time and date
^>page
255
- Remaining range
^>page
14
- Driver messages and warning/indicator lamps*

•=>
page 26
- Mileage and trip recorder
^page
14
Gear-change indicator
Applies to: vehicles with gear-change indicator

This
additional indicator function can help to
save
fuel.

To familiarise yourself with the gear-change
indi­

cator, drive in the normal way to start
with.
A
gear change will be recommended on the instru­
ment cluster display if the
gear
you are in is not
the most economical choice. If no gear change is
recommended, you are already in the most eco­
nomical gear.
14

Instruments and controls
When the vehicle has gathered speed you will al­
so hear
a
warning chime.

Clutch
Applies to: vehicles with manual gearbox
© Note
For further information on the seat belts

•=>
page 275.

©-•
Steering lock
| Do not drive vehicle: steering defective
There is a malfunction in the electronic steering
lock. The ignition can no longer be switched on.
Do not have the vehicle towed away, because you
won't be able to steer it. Obtain professional as­
sistance.

^3
Steering lock: system fault! Please contact
workshop
There is a malfunction in the electronic steering
lock.
Drive to a qualified workshop soon and have the
fault rectified.

A WARNING

Your vehicle must not be towed if there is a
fault in the electronic steering Lock - risk of
accident!

-=*>
Engine start system

H
Engine start
system:
system fault! Please
contact workshop
Do not switch off the ignition; otherwise you may
not be able to switch it on again.
Drive to a qualified workshop without delay and
have the fault rectified.

3
Engine start
system:
system fault! Please
contact workshop
There is a malfunction in the engine start system.
Drive to a qualified workshop soon and have the
fault rectified.

jBy
Clutch:
fault. Please contact workshop
There is a permanent malfunction in the clutch.
The transmissible torque is reduced. You can
con­

tinue driving, but avoid placing an excessive load
on the clutch. Do not slip the clutch for too
long,

for example when driving away on a slope, tow­
ing a trailer or when parking. Drive to a qualified
workshop soon and have the fault rectified.

Q}
Clutch: overheating. Please adapt driving
style
There is a malfunction in the clutch. The trans­
missible torque is reduced. You can continue

driving,
but avoid placing an excessive load on
the clutch. Do not slip the clutch for too
long,
for
example when driving away on a slope, towing a
trailer or when parking. The indicator lamp will
go out when the transmission capability of the
clutch has been restored completely.

^
Engine stopped while vehicle is moving
| Engine stopped: brake servo and power
steering not possible
There is a malfunction in the engine or fuel sup­
ply system.
Greater strength is required to steer and brake
the vehicle if the engine stops while the vehicle is

coasting.
Carefully try to bring the coasting
vehi­

cle safely to a standstill out of the way of moving
traffic. Obtain professional assistance.
A WARNING
Greater strength is required to brake the
vehi­

cle if the engine stops while the vehicle is
moving - risk of accident! Greater strength
will be required to steer the vehicle unless the
power steering is still providing assistance.
The power steering may still be available if
the vehicle is still coasting with the ignition
switched on (and the vehicle battery charge is
sufficient).
32

Instruments and controls
the exhaust gas and damage the catalytic
con­

verter.
Drive slowly to a qualified workshop without de­
lay and have the fault rectified.
Diesel particulate filter
Applies to: vehicles with diesel particulate filter

|
Particulate filter: system fault. See owner's
manual
The diesel particulate filter requires regenera­

tion.
You can assist the self-cleaning function of
the filter by driving as follows:
Drive at a speed of at least 60 km/h for about
15 minutes in 4th or 5th gear (on vehicles with
manual gearbox), or with the selector lever in po­
sition S (on vehicles with automatic gearbox).
Keep the engine speed at about 2000
rpm.
As a
result of the increase in temperature, the soot in
the filter will be burned off. The indicator lamp
will go out once the cleaning process has been
completed successfully.
If the indicator lamp does not go out, drive to a
qualified workshop without delay and have the
fault rectified.
A WARNING
It is essential that you adjust your speed to
suit the weather,
road,
terrain and traffic
con­

ditions. The recommended driving speed
must never lead to the driver disregarding the
traffic regulations.

(T) Note

For more information about the diesel partic­
ulate filter, refer to
^>page
295.
!
»
Engine speed governing
Applies to: vehicles with engine speed governing
[51 Max. engine speed: XXXX rpm
The engine speed will automatically be governed
to the speed displayed in the instrument cluster.
This protects the engine from overheating.
The rev limiter is deactivated as soon as the en­
gine temperature is no longer within the critical
range and you have taken
your
foot off the accel­
erator.
If the rev limiter has been activated because of a
fault in the engine management system, the in­
dicator lamp
Q or[|2g
will also light up. Make
sure that the engine speed does not exceed the
speed displayed in the driver information system,
for example when shifting down a gear. Drive to
a qualified workshop without delay and have the
fault rectified.
Engine oil level
(MIN)
23
Please check oil level
You can continue driving for the time being but
you should check the engine oil level as soon as
possible
<^page
297.
- If the engine oil level is too Low, add more oil

^>page
298, Checking and topping up the en­
gine oil level.
- If the engine oil level is normal but the indica­
tor lamp stays on, drive to a qualified workshop
without delay and avoid high engine speeds.

ST
Engine oil sensor

3
Oil level sensor: system fault
The sensor for checking the engine oil level has

failed.
Drive to a qualified workshop soon and
have the fault rectified.

3
Oil level sensor: oil change required. Please
contact workshop
The engine oil level is too
high.

Drive to a qualified workshop without delay and
have the fault rectified.
CAUTION
Please observe the procedure described in the
Owner's Manual
^>page
298, Checking and
topping up the engine oil level.
f Engine warm-up
requested

Please warm up engine
34

Driving

•
Briefly pull the selector lever back from
posi­

tion D/S to select position S, or move the selec­
tor lever to the right into the tiptronic gate, or
select dynamic mode in drive select*

^>page
131.

•
Press the brake pedal firmly with your
left
foot
and hold it down for at Least one second.

•
At the same time, press the accelerator all the
way down with your right foot until the engine
revs are high and steady.
• Take your
left
foot
off
the brake.
A WARNING
- Always adapt your driving style to the traffic
conditions.
- Only use the launch control programme
when road and traffic conditions permit,
and make
sure
your manner of driving and
accelerating the vehicle does not inconven­
ience or endanger other road users.
- Please note that the driven wheels may
start to spin when the off-road mode is
switched on, causing the vehicle to Lose

grip,
in particular on slippery or wet roads -
danger of skidding!
- When acceleration has been completed, you
should deactivate the off-road mode again
by briefly pressing the
|flQFF|
button.
© Note
- The gearbox may be hot after you have used
the launch control programme. In this case,
the programme may not be available for
several minutes. The programme will be
available again after
a
cool-down period.
-Accelerating with the launch control pro­
gramme places a heavy load on all parts of
the vehicLe. This can result in increased wear
and tear.
Gearbox malfunction
Applies to: vehicles with automatic gearbox
| Gearbox malfunction! Please stop the vehi­
cle and select P
There is a malfunction in the gearbox. Park the
vehicle safely and do not drive on. Obtain profes­
sional assistance.
| Gearbox overheating! Please stop the vehi­

cle.

The gearbox is overheating and could be dam­

aged.
Stop the vehicle and let the gearbox cool
down with the engine idling and the selector lev­
er in position P. If the warning lamp and the
message disappear, drive to a qualified workshop
soon and have the fault rectified. Do not drive on
if the warning lamp stays on and the message
does not disappear. Obtain professional assis­

tance.

E3
Gearbox malfunction: you can continue driv­
ing
Drive to a qualified workshop soon and have the
fault rectified.

S3
Gearbox malfunction: no reverse gear (you
can continue driving)
A gearbox malfunction has occurred. The gearbox
will switch to the back-up programme. The pro­
gramme will only move into certain gears or may
not be able to shift gears at all. The engine may

stall.
You can no longer engage reverse gear.
Drive to a qualified workshop without delay and
have the fault rectified.

jftj
Gearbox malfunction: you can continue driv­
ing in D until engine off
Park your vehicle well away from moving traffic.
Obtain professional assistance.

ty
Gearbox overheating: please adapt driving
style
You can continue driving at moderate speed. You
can resume normal driving if the indicator lamp
goes out.

LQ]
Gearbox: please press brake pedal and select
gear again
If
a
gearbox malfunction has occurred due to
overheating, this message will appear once the
gearbox has cooled down again.
92

Towing
a
trailer

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have friction linings at the sides to prevent exces­
sive wear. Degrease and clean the ball joint be­
fore using a stabiLiser. The stabiliser can be pur­
chased and installed
at
a qualified workshop.
Electronic stabilisation control
The
ESC
-
in particular in conjunction with the
trailer stabilisation system
o^page
97 - makes
it

easier to stabilise a trailer
if it
starts to skid
or

sway. You should therefore keep the
ESC
switch­
ed on
at
all times.
Overheating
In hot weather, keep an eye on the coolant
tem­

perature gauge
^page
13. When climbing long
hills with the engine running fast in low gear, the
coolant temperature can increase. Reduce speed
immediately
if
the needle moves to the right end
of the scale. For information on the warning
lamp
||
refer to
opage
30.

Rear carrier systems
When using rear carrier systems (e.g. bicycle
racks) on the towing bracket,
it
is important not
to exceed the maximum load.
The total weight
of
the rear carrier system and
its

load must not exceed
75
kg for this vehicle. How­
ever,
it
is also important to observe the maxi­
mum permissible load for the rear carrier sys­

tem.

The greater the distance from the towing brack­
et, the smaller the maximum permissible Load
on

the rear carrier system. For this reason, you
should secure heavy objects as near as possible
to the towing bracket.
Note the instructions provided by the manufac­
turer of the rear carrier system.
Please make sure that the rear carrier system
is

approved for use on your vehicle.

l
Note
A WARNING
The use of an unsuitable rear carrier system
could cause severe damage
to
the towing
bracket. The towing bracket could then break
and cause an accident.
Degrease and clean the ball joint before using
a rear carrier system.

Removable towing
bracket

Introduction
Applies to: vehicles with removable towing bracket
Special care is required when fitting and remov­
ing the towing bracket.

Fig.
84 Luggage compartment:
Ball
joint for towing brack­
et (stowage example)
The removable ball joint attachment for the tow­
ing bracket is stored under the floor panel or in a
separate bag on the floor of the luggage com­
partment.
The ball joint can be fitted and removed by hand.
WARNING
Never use tools of any kind when fitting and
removing the ball joint. This could damage
the mechanism which locks the
ball
joint
in

place and impair its safety
-
risk of accident!
© Note
- Do not attempt to modify or repair the ball
joint or other towing bracket components.
- Should you have any difficulties when using
the towing bracket, or suspect that
it
is not
fitted properly, contact
a
qualified work­

shop.

- Before setting off, always check that the

ball
joint is secured properly
Opage
101.
99

Intelligent technology

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Intelligent technology
Electronic stabilisation
control (ESC)
Description
The electronic stabilisation control (ESC) increa­
ses the car's stability. It reduces the tendency to
skid and improves the stability and roadholding
of the vehicle. The ESC detects critical handling
situations, such as understeer, oversteer and

wheelspin
on the driven wheels. It stabilises the
vehicle by braking individual wheels or by reduc­
ing the engine torque. The indicator
lamp^
in
the instrument cluster starts flashing as soon as
the ESC intervenes.
The following systems are integrated in the ESC:
Anti-lock brake system (ABS)
ABS prevents the wheels from locking up under
braking until the vehicle has reached a virtual

standstill.
You can continue to steer the vehicle
even when the brakes are on
full.
Keep your foot
on the brake pedal and do not pump the brakes.
You will feel the brake pedal puLsate while the
anti-lock brake system is working.
Brake assist system
The brake assist system can shorten the braking
distance. The braking force is automatically boos­
ted if
you
press the brake pedal quickly in an
emergency. You must keep pressing the brake
pedal until the danger has passed. On
vehides

with adaptive cruise control*, the response of the
brake assist system will be more sensitive if you
are too close to the vehicLe in front.
Traction control system (ASR)
In the event of
wheelspin,
the traction control
system reduces the engine torque to match the
amount of grip available. This helps the car to
start moving, accelerate or climb a gradient.
Electronic differential lock (EDL)
When the EDL detects wheelspin, it brakes the
spinning wheel and directs the power to the
oth­

er driven wheel (or wheels on quattro* versions).
This function is not available at high speeds.
To prevent the disc brake of the braked wheel
from overheating, the EDL cuts out automatically
if subjected to excessive loads. The vehicLe can
still be driven. The EDL will switch on again auto­
matically when the brake has cooled down.
Steering recommendation
The ESC helps to stabilise the vehicle by changing
the steering wheel torque.
Trailer stabilisation system
Applies to: vehicles with trailer stabilisation system
Trailers have a tendency to sway. If the
ESC
de­
tects that the trailer is swaying and this is affect­
ing the towing vehicLe, it will automatically brake
the vehicle in order to stabilise the trailer

^>page
97.
Selective wheel torque control
Selective wheel torque control intervenes when
cornering by braking the wheel(s) on the inside of
the bend individually as required. This enables
precision cornering.
Multicollision brake assist system
The "multicollision brake assist system" can help
to reduce the risk of skidding and further
colli­

sions during an accident. If the airbag control
unit detects that
a
collision has taken place up­
wards of
a
certain speed, the vehicle is braked by
the
ESC.

The vehicle will not be braked automatically if:
- the driver presses the accelerator,
- or the
ESC,
the brake system or the vehicle's
electrical system are not fully functional.
WARNING
- The grip provided by the ESC and the inte­
grated systems is still subject to the physi­
cal limits of adhesion. Always bear this in

mind,
especially on wet or sLippery roads. If
you notice the systems cutting in, you
should reduce your speed immediately to
suit the road and traffic conditions. Do not

let
the extra safety provided tempt you into
taking any risks when driving - this can
cause accidents.
145

Checking and topping up fluids

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Emission controL
systems
Catalytic converter
Applies to: vehicles with petrol engine
The vehicle must only be used with unleaded pet­

rol,
otherwise the catalytic converter will be ir­
reparably damaged.
Never allow the fuel tank to run completely dry,
as the irregular supply of fuel can cause misfir­

ing.
This allows unburnt fuel to enter the exhaust

system,
which can cause overheating and dam­
age to the catalytic converter.
Diesel particulate filter
Applies to: vehicles with diesel engine
The diesel particulate filter can filter out almost
all soot particles contained in the exhaust gas. In
normal driving conditions the filter is self-clean­

ing.
Should the self-cleaning function of the filter
not be able to operate, e.g. when the vehicle is
continuously used only for short trips, the filter
becomes obstructed with soot and the indicator

lampnf°r
the
diesel particulate filter Lights up

cépage
34.
A WARNING
The exhaust system is very hot when the
vehi­

cle is being driven and after the engine has
been switched off.
- Never touch the tailpipes when they are hot
- risk of burns!
- Because of the high temperatures which can
occur in the emission controL system, do not
park the vehicle where the exhaust can
come into contact with flammable materials
under the car (e.g. on grass or at the forest
edge) - risk of fire!
- Do not apply any underseal agents in the
area around the exhaust system - risk of

fire!

Engine compartment
Working on components in the engine
compartment
Extra caution is necessary when working on com­
ponents in the engine compartment.
Always be aware of the danger of injury and
scalding as well as the risk of accident or fire
when working in the engine compartment (e.g.
when checking and refilling fluids). Always ob­
serve the warnings listed below and follow all
normal safety precautions. The engine compart­
ment of any motor vehicle is a potentially haz­
ardous area
oA-

A WARNING
- Switch off the engine.
-Switch off the ignition.

-Applythe
parking brake.
- On vehicles with manual gearbox place the
gear lever in neutral, on vehicles with auto­
matic gearbox move the selector lever to
position P.
- To avoid the risk of being scalded, never
open the bonnet if
you
see steam or coolant
escaping from the engine compartment.
Wait until no steam or coolant can be seen
before opening the bonnet.
- Wait for the engine to cool down.
- Keep children away from engine compart­
ment.
- Never spill fluids on a hot engine. These
flu­

ids can cause a fire (e.g. radiator
anti­

freeze).
- Take care not to cause short circuits in the
electrical system.
- When working in the engine compartment
be aware that the radiator fan may start
running suddenly, even if the ignition is
switched off - risk of injury!
- Do not unscrew the cap on the expansion
tank when the engine is hot. The cooling
system is under pressure.
- Protect face, hands and arms by covering
the cap with a large, thick rag to protect
against escaping coolant and steam.
295

Checking and topping up fluids
Coolant additive
The coolant additive contains anti-freeze and cor­
rosion protection agent. Only use one of the
fol­

lowing coolant additives. It is possible to mix
these additives.
Topping up coolant
Coolant additive
G13
G12++
Specification

TL774J

TL 774
G

The amount of coolant additive which needs to
be mixed with the water depends on the temper­
atures to be expected in the winter season. If the
anti-freeze concentration is too Low, the coolant
can freeze and cause engine damage.
Hot regions
Cold regions
Coolant
additive

min.
40%
max. 45 %

min.
50%
max. 55 %
Frost protec­
tion

min.-25°C

max. -40 °C

(T)
CAUTION
- Have your qualified workshop check the
cooling system before the winter season to
make sure that the anti-freeze concentra­
tion is adequate for the conditions to be ex­

pected.
This applies particularly if
you
drive
into a colder climate zone.
- To prevent damage to the engine, do not
use a different type of anti-freeze additive if
the approved type of additive is not availa­

ble.
In this case use only water and bring
the coolant concentration back up to the
correct level as soon as possible by putting
in the specified additive.
- Always top up with fresh, unused coolant.
- Radiator sealants must not be added to the
coolant.

Fig.
248 Engine compartment: Markings on coolant ex­
pansion tank
Please refer to the safety notes
^page
295,

Working on components in the engine compart­
ment.
Checking coolant level

•
Park the vehicle on a level surface.

•
Switch off the ignition.

•
Read off the coolant level on the coolant ex­
pansion tank
^>Fig.
248. When the engine is

cold,
the coolant level should be between the
marks. When the engine is warm, it may be
slightly above the top mark.
Topping up coolant
Important: The coolant expansion tank must not
be empty
•=>([).

•
Wait for the engine to cool down.

•
Cover the cap on the expansion tank with a

cloth,
and carefully unscrew the cap
anti-clock­

wise
<=>
/K.

*-
Add coolant in the correct concentration

tapage
299 up to the top mark.

•
You should make sure that the fluid level re­
mains stable. If necessary, add more coolant.

•
Screw the cap on again tightly.
Any loss of coolant normally indicates a Leak in
the cooling system. Drive to a qualified workshop
without delay and have the cooling system

checked.
If there are no leaks in the system, a
loss of coolant can only occur if the coolant boils
and is forced out of the system as a result of
overheating.
300