engine overheat AUDI TT ROADSTER 2017 Owners Manual

Instrumen ts and ind icator ligh ts
Instruments and indicator Lights
Instruments
Audi virtual cockpit (instrument cluster)
The instrument cluster is the central information center for the driver.
Fig. 3 Instrume nt cluster overv iew
(D Eng ine coolant temperature 8
@ Driver information system . . . . . . 19
® Fuel level . . . . . . . . . . . . . . . . . . . . 8
@ Trip odometer reset knob . . . . . . . 23
Coolant temperature indicator
The coolan t temperature display c:> page 8,
fig. 3
(D only functions when the ignition is
switched on. To prevent engine damage, p lease
observe the following notes about the tempera­
ture ranges.
Cold rang e
If o nly the L EDs in the left area of the gauge turn
on, the engine has not reached operating tem­
perature yet. Avoid high engine speeds, full ac­
celerating and heavy engine loads .
Normal range
The engine has reached its operating tempera­
ture once the LEDs up to the center of the gauge
turn on . If the . indicator light in the Infotain­
ment system display turns on, the coolant tem­
perature is too high
c:> page 12.
8
(D Note
-Aux iliary head lights and other accessories in
front of the coo ling-a ir intake impa ir the
cooling effect o f the coolant. This increases
the risk of the engine overheating during high outside temperatures and heavy en ­
gine load.
- T he front spoiler a lso helps to distribute
cooling air correctly while driving . If the
spoiler is damaged, the cooling effect will
be impaired and the risk of the eng ine over­
heating w ill increase. See an authorized
Audi dealer or author ized Audi Service Fa­
cility for assistance .
Fuel level
The indicator @ only func tions when the ignition
i s sw itched on. If the fuel level drops below 1.9
gal (7
L), a red LED wi ll light up and the rD indi­
cator light will turn on
c:> page 16 . The LED
blinks red when the fuel level is very low.
The fuel tank capacity of your veh icle is listed in
the
Techni cal Dat a sectio n c:> page 291. ..,_

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(D Note
Never drive until the tank is completely emp­
ty. The irregular supply of fuel that results
from that can cause engine misfires . Uncom­
busted fuel will then enter the exhaust sys­
tem. This can cause overheating and damage
to the catalytic converter .
Indicator lights
Description
The indicator lights in the instrument cluster
blink or turn on. They indicate functions or mal­
functions.
With some indicator lights, messages may ap­pear and warning signals may sound. The indica­
tor lights and messages in the display can be cov­
ered by other displays. To show them again, se­ lect the tab for the indicator lights and messages
using the multifunction steering wheel
c;, page 19. If there are several malfunct ions,
you can display them one at a time using the
thumbwheel.
Some ind icator lights in the display can display in
several colors .
Overview
Some indicator lights turn on briefly as a function
check whe n you switch the ign ition on . These sys­
tems are marked with a
,I in the following tables.
If one of these indicator lights does not turn on,
there is a ma lfunction in that system.
Red indicator lights
---------------
US A models :
Brake system ./ c;, page 10
Canada models:
Brake system ./ c;, page 10
USA models : electromechanical
parking brake¢
page 11
Canada models: electromechanical
parking brake¢
page 11
Cooling system
<=>page 12
Instruments and indicator lights
Engine oil pressure
c;,page 12
Generator
¢page 13
Engine stop while driving
¢page 13
Safety be lt
c;, page 13
Electromechanical steering./
c;,page 91
Steering lock
¢page 13
Central indicator light
c;,page 13
Engine start system
c;,page 13
Transmission malfunction
c;, page 70
Rear spoiler
c;,page 92
Yellow indicator lights
Electronic Stabilization Contro l (ESC)
,I c;, page 14
Electronic Stabilization Control (ESC)
./ c;, page 14
USA models: anti-lock braking sys­
tem (ABS)./
c;, page 14
Canada models: anti-lock braking
system (ABS) ./
c;, page 14
Safety systems ,I
c;,page 14
USA models:
Brake pads c;, page 14
Canada models:
Brake pads c;, page 14
Electromechanical parking brake
c;,page 11
Tire pressure monitoring system../
c>page264
Tire pressure monitoring system
<=>page 264
9

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If brake assist (brake booster) is not working, you
have to use much more force when braking the
vehicle. See an authorized Audi dealer or author­
ized Audi Service Facility for assistance.
1111 (USA models) /. (Canada models)
Brakes: malfunction! Stop vehicle safely
If the ABS indicator light til) (USA models) /
¢cj (Canada models), the ESC indicator light J.il
and the brake system indicator light 1111 (USA
models)/ . (Canada models) turn on and this
message appears, then the ABS, ESC and braking
distribution are malfunctioning¢ ,&..
Drive to your authorized Audi dealer or author­
ized Audi Service Facility immediately to have the
malfunction corrected ¢
&.
1111 (USA models) /. (Canada models) Park­
ing brake: malfunction! Safely stop vehicle.
Please contact Service
- If the indicator light and the message appear
when the vehicle is stationary or after switch­
ing the ignition on,
check if you can release the
parking brake . If you cannot release the park­
ing brake, see your authorized Audi dealer or
authorized Audi Service Facility . If you can re­
lease the parking brake and the message still
appears, see an authorized Audi dealer or au­
thorized Audi Service Facility immediately to
have the malfunction corrected .
- If the indicator light and message appear
while
driving,
the hill start assist or emergency brak­
ing function may be malfunctioning. It may not
be possible to set the parking brake or release
it once it has been set. Do not park your vehicle
on hills. See an authorized Audi dealer or au­
thorized Audi Service Facility for assistance.
(USA models): if the
1111 and EiJ indicator
lights turn on together, have the brake system
checked immediately by an authorized Audi deal­
er or authorized Audi Service Facility
¢page 14.
There is also a warning tone when the lights turn
on.
Instruments and indicator lights
A WARNING
- Read and follow the warnings in
¢ page 235, Working in the engine com­
partment
before opening the hood and
checking the brake fluid level.
- If the brake system indicator light does not
turn off or it turns on while driving, the
brake fluid level in the reservoir is too low,
and this increases the risk of an accident.
Stop the vehicle and do not continue driv­
ing. See an authorized Audi dealer or au­
thorized Audi Service Facility for assistance.
- If the brake system indicator light turns on
together with the ABS and ESC indicator
lights, the ABS/ESC regulating function may
be malfunctioning. Functions that stabilize
the vehicle are no longer available. This
could cause the rear of the vehicle to
swerve, which increases the risk that the ve­
hicle will slide . Drive carefully to the nearest
authorized Audi dealer or authorized Audi
Service Facility and have the malfunction
corrected.
PARK /(®)/¢), Electromechanical parking
brake
If the -(USA models)/ . (Canada models)
indicator light turns on, the parking brake was
set.
- (USA models) I. (Canada models) Park­
ing brake: caution! Vehicle parked too steep
If the indicator light blinks and the message ap­
pears, there is not enough braking power to se­
cure the vehicle. The brakes have overheated. The
vehicle could roll away even on a small incline.
- (USA models) I. (Canada models)
Please press brake pedal to release parking
brake
To release the parking brake, press the brake
pedal and press the~ button at the same time,
or start driving with hill start assist¢
page 63,
Starting from a stop.
Jlj Parking brake: malfunction! See owner's
manual
11

Instruments and indicator lights
There is a malfunction in the parking brake . Dr ive
to an authorized Audi dealer or authorized Audi
Serv ice Facility immediately to have the malfunc­
tion corrected .
1ij Parking brake: ma lfunction! Safely stop ve­
hicle . Ple ase contact Se rvice
There is a malfunction in the parking br ake. Dr ive
to an author ized Audi dealer or author ized A udi
Service Facility immediately to have the mal func­
tion corrected.
ltJil:Jl:)jf;U~ (USA model s) /
6] (Canada model s)
Ple ase rele ase p arking brake .
Re lease the park ing brake if this message ap­
pea rs .
IZJill :ljfj:0 (USA mod els) /
6] (C an ad a model s)
Parking brake auto rel ea se unavail able
If th is message appears, press the brake pedal
first and then release the parking brake.
IZ,i!;t:Jjf;U~U SA mod els ) /
K@) Parking b rak e: c aution! Vehicle pa rked too
steep
If the indicator light blinks and the message ap­
pears, there is not enough braking power to se­
cure the vehicle. The brakes have overheated. The
veh icle could roll away even on a small incline.
ltJ ilJ :jjJ:1:0 (USA model s) /
K@j Parking b rak e is appl ied
I f th is message appears, press the bra ke pedal
fi rst and then release the pa rking brake if neces­
sary .
(D Tips
For add it iona l information on the park ing
brake, see ¢
page 62.
-L Cooling system
• Turn off engine and check coolant le vel
The coolan t leve l is too low.
Do not cont inue drivi ng and switch the engine
off . Check the coolant level¢
page 241 .
12
-If the coo lant level is too low , add coolant
¢
page 241. Only continue driving once the in­
dicator light turns off.
• Coo la nt temperature : to o high . Let engine
run with veh icle stationa ry
Let the engine ru n at idle fo r a few minutes to
cool off, until t he ind icator lig ht t urns off .
- If the ind icator light does not turn off , do not
cont inue driving the veh icle. See an authorized
Audi dea le r or authorized Audi Service Facility
for assistance.
.&_ WARNING
- Never ope n the hood if you can see or hea r
steam or coo lant escaping from the engine
compartment. This increases the risk of
burns. Wait until you no longer see or hear
steam or coolant escaping.
- The engine compartment in any vehicle can
be a dangerous area. Stop the engine and
allow it to cool before working in the engine
compartment . Always follow the informa­
tion found in
Q page 235, Working in the
engine compartment .
(D Note
Do not continue driv ing if the . indicator
light turns on as this increases the risk of en­
g ine damage.
"I!::?': Engine oil pressure
• Turn off engin e. Oil pre ssure to o low
Stop the engine and do not continue driving. Check the eng ine oil level¢
page 239.
-If the eng ine oi l level is too low, add engine oil
¢
page 239 . Only continue driving once the in­
dicator light turns off.
-If the engine oi l level is correct and the indica­
tor light still blinks, turn the engine off and do
not continue dr iving . See an author iz ed Audi
dea ler or authori zed Audi Service Facility for as-
sistance . .,.

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Safety system
If them indicator light turns on or blinks, there
is a malfunction in a safety system.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected.
_& WARNING
-
Have the safety systems inspected immedi­
ately. Otherwise, there is a risk that the sys­
tems may not activate during a collision,
which increases the risk of serious injury or death.
c±::, Engine control
If the II indicator light turns on if there is a mal­
function in the engine control.
Drive slowly to an authorized Audi dealer or au­
thori zed Audi Service Facility to have the engine
checked.
C Malfunction indicator lamp (MIL)
The malfunction indicator lamp (MIL) is part of
the On Board Diagnostic system (OBD II) . The
¢..ij symbol turns on when the ignition is switched
on and turns off again once the engine is started
and running at a steady idle speed. This indicates
that the MIL is functioning correctly.
The indicator light turns on if there is a malfunc­
tion in the engine electronics. See an authorized
Audi dealer or authorized Audi Service Facility to
have the malfunction corrected.
For additional information, see¢
page 17.
!?) Engine speed limitation
Appl ies to: vehicles with engine speed li m itation
(ii Maximum engine speed: XXXX rpm
The engine speed is automatically limited to the
speed displayed in the driver information system .
This protects the engine from overheating.
;:::: The engine speed limitation deactivates once the
" ~ engine is no longer in the critical temperature 0
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Instruments and indicator lights
range and you have released the accelerator ped­
al once.
If the engine speed limitation was activated by
an engine control malfunction, the
II indicator
light also turns on. Make sure the engine speed
does not go above the speed displayed, for exam­
ple when downshifting. Drive to an authorized
Audi dealer or authorized Audi Service Facility im­
mediately to have the malfunction corrected.
~ Engine oil level (min.)
Ill Please check oil level
You may continue driving for the time being.
Check the engine oil level as soon as possible
<=> page 237.
-If the engine oil level is too low, add engine oil
¢page 239.
-If the engine oil level is correct and the indica­
tor light still turns on, drive at low engine
speed to an authorized Audi dealer or author­
ized Audi Service Facility .
"'' Engine oil sensor
• Oil level system: malfunction! Please con­
tact Service
The sensor to check the engine oil level has
failed . Drive to an authorized Audi dealer or au­
thorized Audi Service Facility immediately to have
the malfunction corrected .
• Oil level sensor: oil change necessary. Please
contact Service
The engine oil level is too high.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected.
(D Note
Refer to the description in the Owner's Man­
ual ¢
page 239, Checking the engine oil level
and adding engine oil.
15

Driving
Avoid full acc ele ra tion
You sho uld rare ly travel at the maximum vehicle
speed . High speeds cause a disp roportionately
high increase in fuel consumption, emissions and
traffic noise . Slower driving saves fuel.
Reduce idling time
It pays off to stop the engi ne, for examp le when
at rai lro ad crossings or tr affic lights with longer
red lights . Stopping the engine for 30 -40 sec ­
onds already saves more fuel than the amount of
extra fuel needed to resta rt the engine.
It t akes a very long time in idle to wa rm the en­
g ine up to operating tempe ra ture . Wear and
emissions are especially high in the warm-up
p hase . Therefore, yo u should begin driving im ­
mediately after starting the engine. Avoid high
RPMs while do ing th is.
Have ma intenanc e performed r egularly
By having maintenance performed regular ly on
your vehicle, yo u can help to reduce f uel con­
sumpt ion before you even start to dr ive. The
maintenance condition of your vehicle not only
affects traffic safety and long-term value but a l­
so impacts
fuel consumpt ion .
A poorly maintained engine can lead to fuel con­
sumpt ion that is 10% higher than normal.
A lso check the
oil le vel when refueling . The o il
consumption
depends large ly on the engine load
and speed. It is normal for the oil consumpt ion
of a new eng ine to reach its lowest point only af­
ter a certain amount of use. Therefore, the oil
consumption can o nly be properly judged after
approx imately 3,000 m i (S,000 km) have been
d riven.
Avoid short trips
The engine and exhaust cleaning system must
reach the ir opt imal
operating temperature to ef­
fectively red uce consumption and em iss ions.
A co ld engine uses a disproportionately h igh
amount of fuel. The engine reaches operating
temperature and consumpt io n normalizes only
afte r approximately
four kilometers.
58
(D Note
Do not leave engine idling unattended after
starting. If warning lights sho uld come on to
i ndicate imprope r operation, they would go
unheeded. Extended idling also produces
h eat, which could result in overheating or
other damage to the vehicle o r other proper­
ty.
(D Note
- Have your ve hicle ma intained properly and
in accordance with the service recommenda­
t ions i n your Warranty
& M aintenance book­
let. La ck of prope r mai nte na nce as we ll as
imp roper use o f the ve hicle will impa ir the
func tion of the emission cont ro l sys tem and
cou ld lead to damage.
- Do not alte r or remove any compone nt of
the Emission Contro l System unless ap ­
proved by the man ufacturer.
- Do not alte r or remove any dev ice, such as
heat shields, switches, ig nition w ires,
valves, which are designed to protect your
vehicle's Emission Contro l System and other
important veh icle components.
(D Tips
The cons umption estimates as publishe d by
ENVIRONMENTAL PROTECTION AGENCY
(EPA) and Transport Canada may not corre­
spond to your actual consumption on the r oad, which wi ll vary depending upon vehicle
l oad and speed, road a nd wea ther conditions,
tr ip length, etc.

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Starting on a hill
"' Set the parking brake .
"'With the driving gear selected, press the accel­
erator pedal carefully. The parking brake will
release automatically if your safety belt is fas­
tened .
Under certain circumstances, such as driving in
the mountains, it may be useful to switch tempo­
rarily to the manual shift program in order to
manually adjust the gears to the driving condi­
tions ¢
page 68.
When parking on a level surface, simply place the
selector lever in the P position. On inclines, acti­
vate the parking brake first and then move the selector lever to the P position ¢
page 62. This
prevents the locking mechanism from being
loaded too heavily and will make it easier to
move the selector lever out of the P position .
.8, WARNING
- The vehicle can roll even when the engine is
switched off.
- Unintended vehicle movement can lead to
serious injuries.
- Never leave your vehicle with the engine
running while in gear.
If you must leave
your vehicle when the engine is running, set
the parking brake and move the selector lev­
er to the P position.
- Power is still transferred to the wheels
when the engine is running at idle. To pre­
vent the vehicle from "creeping", you must keep your foot on the brake when the en­
gine is running and the selector lever is in
the D, Sor R position or "tiptronic" mode is
selected.
- Do not inadvertently press the accelerator
pedal when the vehicle is stationary. Other­
wise the vehicle will start to move immedi­ ately, even if the parking brake is set. This
could result in a crash.
- Do not press the accelerator pedal when
changing the selector lever position while
the vehicle is stationary and the engine is running .
Driving
-Never engage the R or P selector level posi­
tions while driving. It could cause a crash.
- Before driving down a steep slope, reduce
your speed and shift into a lower gear with "ti ptronic".
- Do not ride the brakes or press the brake
pedal too often or too long when driving
downhill. Constant braking causes the brakes to overheat and substantially re­
duces braking performance, increases brak­
ing distance or causes complete failure of
the brake system.
- If you must stop on an incline, always hold
the vehicle in place with the foot brake or
parking brake to prevent it from rolling
back .
- Never hold the vehicle on an incline with a
slipping clutch. The clutch opens automati­
cally when it becomes too hot from the
overload. The
mJ indicator light turns on
and a message appears ¢
page 70 when
the clutch is overloaded.
- If the engine must run while you are work­
ing in the engine compartment with the
hood open, make sure a gear is not engag­
ed. The selector lever must be firmly in the
P position and locked in place and the park­
ing brake must be set ¢
page 235. Other­
wise, the vehicle could begin moving when
increasing the engine speed, even with the
parking brake set .
(!) Note
- When stopping on an incline, do not try to
hold the vehicle in place by pressing the ac­
celerator pedal while a driving gear is se­
lected. This can cause the automatic trans­
mission to overheat and can damage it. Set
the parking brake or press the brake pedal
to prevent the vehicle from rolling.
- Allowing the vehicle to roll when the engine
is stopped and the selector lever is in the N
position will damage the automatic trans­
mission because it is not lubricated under
those circumstances.
67

Driving - The transmission can overheat and be dam­
aged under certain driving and traffic condi­
tions such as frequent starts, creeping for a
long time, or stop -and-go traffic. When the
@] or. indicator light turns on, stop the
vehicle at the next opportunity and let the
transmission cool
r=;, page 70 .
-Allowing the vehicle to roll when the engine
is stopped will damage the S tronic trans ­
mission because it is not lubricated
¢ page 286, Towing with a tow truck.
@ Tips
For safety reasons, the parking brake is re­
leased automatically only when the driver's
safety belt is engaged in the buckle.
Hill descent control
The hill descent control system assists the driver
when driving down hills .
Hill descent control is ac tivated when the selec­
tor lever is in the Dor S position and you press
the brake pedal. The transmission automatically
selects a gear that is suitable for the hill. Hill de­
scent control tries to maintain the speed ach­
ieved at the time of braking, within physical and
technical limitations.
If may still be necessary to
adjust the speed with the brakes. Because hill de ­
scent control cannot shift down farther than 3rd
gear, it may be necessary to shift into tiptronic
mode in very steep areas. In this case, shift man­
ually into 1st or 2nd gear in tiptronic mode to
use the engine's braking force to relieve the
brakes .
Hill descent control switches off once the hill lev­
els out or you press the accelerator pedal.
On vehicles with a cruise control system*
¢ page 72, hill descent control is also activated
when the speed is set.
A WARNING
Hill descent control cannot overcome physical
limitations, so it may not be able to maintain
a constant speed under all conditions. Always
be ready to apply the brakes.
68
Shifting manually (tiptronic mode)
The tiptronic mode allows the driver to shi~ the
gears manually .
Fig. 73 C enter conso le: sh ift ing ma nuall y wi th the selecto r
lever
Fig. 74 Steering whee l: ma nual shifting wit h the shift pad­
dles•
Shifting with the selector lever
You can shift into tiptronic mode while stationary
and whi le driving.
.,. To shift into tiptronic mode, push the selector
lever from the D/S setting to the right in the
tiptronic shift gate. Once the transmission has
sw itched modes, the selector lever position
M
is shown in the Infotainment system display
r=;, page 64, fig. 70 . For example M4 means the
fourth gear is engaged .
.,. To shift up a gear, tap the selector lever for­
ward
G) ¢ fig. 73.
.,. To shift down a gear, tap the selector lever to
back
0 .
Shifting with the shift paddles*
You can operate the shift paddles in the D/S or
M
(tiptronic shift gate) selector lever positions.
.,. To shift up one gear, tap the shift paddle
0
r=;, fig. 7 4.

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brake rotors and pads by caref ull y applying
the brakes several t imes .
-If the front spoiler is damaged or you install
another spoiler, make sure the front wheel
brakes are vent ilated properly. Otherwise,
the brake system could overheat, wh ich re­
duces the ir effectiveness .
- Failure of a brake circuit impairs b raking
performance , which increases brak ing dis­
tance. Avoid driving the vehicle and have it
towed it to the nearest author ized Audi
dealer or author ized A udi Se rvice Facility.
- Never let the vehicle roll while t he engine is
stopped because this increases the risk of a n
acc iden t.
- If the bra ke booste r is not working, you will
have to press m uch ha rder on the bra ke
ped al to compensate for the lac k of th e
booster.
- Never let the brakes "rub " by pressing the
pedal light ly when bra king is no t actually
ne cessary . T his cause s the brakes to over­
hea t and i ncre ases br aking di stance and
ca uses wear.
- B efo re driv ing downh ill a long dis tance on a
steep h ill, decrease your speed and se lec t a
l ower gear . This makes use of the engine
braking effect and relieves the brakes . If
you need to b rake additionally, brake in in­
tervals and not continuously.
@ Tips
- If the brake booste r is not working, you
must press the brake pedal with much more
fo rce than normal.
- If you retrofit yo ur vehicle with a front spoil­
er, whee l
covers or similar items, make sure
that the air flow to the front whee ls is not
i nterr upted . Otherw ise the brake system
ca n become too hot .
Intelligent Technology
Electromechanical
steering
The electromechanical steering supports the
driver 's steering movements .
Power steering adap ts elec tronically based on
the ve hicle speed.
Indicator light s and message s
• Steering: malfun ction! Please stop vehicle
If this indica to r li ght tur ns on and st ays on and
t hi s message appea rs, the powe r steering may
have failed.
Stop t he vehi cle in a safe location as soon as pos­
s ible. Do
not cont inue drivi ng. See an autho riz ed
Audi dealer or authorized A udi Service Fac ility for
assistance .
l;r- ij S teering : malfun ction! You may continue
driving
If the indicator light turns on, the steering wheel
may be more d ifficult to
move or more sensit ive
t h an usua l. Th e steer ing whee l may a lso be at an
angle when d riving s trai ght.
D rive slowly to an a uthorized Audi dea ler or au­
t h orized Audi Serv ice Facility to have the mal­
funct ion corre cted.
(D Tips
If the . or l;r, ij ind icator light only s tays on
fo r a short time, you may continue d riving.
All wheel drive (quattro)
In all wheel drive, all four wheels are powered.
General information
In all whee l dr ive, the dr iv ing power is divided be­
tween all four wheels . This happens automatical ­
ly depending on you r dr iv ing behav ior as we ll as
t h e cur rent road condi tions. A lso see ~
page 88,
Elec tronic stabilization con trol ( ESC).
T he all whee l dr ive concept is des igned for high
engine power . You r vehicle is except ionally pow­
erfu l and has excellent driv ing cha racteristics
bot h unde r normal d rivi ng conditions and o n
91

Checking and Filling
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, a loss can come
from the coolant boiling through overheating
and being pushed out of the cooling system.
A WARNING
The cooling system is pressurized and can be­
come very hot. To reduce the r isk of burns
from hot coolant:
- Do not open the coolant expansion tank cap when the eng ine is hot. This increases the
risk of burns.
- Stop the engine and allow it to cool.
- Protect your face, hands and arms from es-
caping coolant and steam by covering the
coolant tank cap with a large, thick cloth.
- Turn the coolant tank cap counterclockwise
slowly and keep light pressure o n the cap.
- To reduce the risk of burns, do not allow any
antifreeze or coolant to drip onto the ex­ haust system or hot eng ine components .
T he ethylene glycol in eng ine coolant can
catch fire under certa in circumstances.
- The coo lant add itive and the coolant can be
dange rous to your health. For this reason,
keep the coolan t in the origina l container
and away from children. There is a risk of
poisoning.
- When working in the engine compartmen t,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of inj ury.
(D Note
Do not add coolant if the exp ansion tank is
empty . Air could enter the cooling system and
damage the engine . If this is the case, do not
continue driving. See an authorized Audi deal­
er or authorized Audi Service Facility for assis­
tance.
242
Brake fluid
Fig. 1 85 Eng ine compa rtment: cover o n the brake fluid
reservo ir
Observe the safety precautions ¢ A in Working
in the engine compartment on page 235.
Check ing the brake fluid level
... Read the bra ke fluid level o n the bra ke flu id
reservoir
¢ page 237, fig . 181. The brake f luid
level must be between the MIN and MAX mark­
ings ¢&_ .
The brake f lu id leve l is monito red au toma tically.
Changing the brake fluid
Have the brake fluid changed regularly by an au­
thorized Audi dea ler or authorized Audi Service
Fac ility.
A WARNING
- I f the brake fl uid leve l is below the MIN
marking, it can impair the bra king effec t
and driving safety, which increase the risk o f
an accident . Do not continue driv ing. See a n
author ized Audi dealer or authorized A udi
Serv ice Facility for assistance.
- If the brake fl uid is old, b ubbles may form
in the brake system during heavy braking.
This would impair braking performance and
driving safety, which increases the r isk of an
accident.
- To ensure the brake system functions cor­
rectly, only use brake fluids that comply
w it h VW standard SO l 14 or
FMVSS- 116 DO T 4.