2017 AUDI TT ROADSTER ECU

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Cooling system
Coolant
The engine cooling system is filled with a mixture
of pur ified water and coolant additive at the fac­
tory. This coo lant must not be not changed.
The coolant level is monitored through the. in­
dicator light
¢page 12. However , we do recom­
mend occasionally check ing the coo lant level
manually.
If you must add coolant, use a mixture of water
and coolant addit ive. Mixing the coolant additive
with distilled water is recommended.
Coolant additive
The coolant additive is made of anti-freez ing and
corros ion protection agents. Only use the follow­
ing coolant addit ives . These additives may be
mixed with each other.
Coolant additive Specification
G13 TL 774
J
G12++ TL 774 G
The amount of coo lant add itive that needs to be
mixed with water depends on the climate where
the vehicle will be operated. If the coolant addi­ tive percentage is too low, the coolant can freeze
and damage the engine.
Coolant addi- Freeze protec-
tive tion
Warm regions min. 40%, m in. -13 °F
max. 45% (-25 °C)
Cold regions min. 50%, max
. -40 °F
max. 55% (-40 °C)
(D Note
- Before the start of winter, have your author­
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate . Th is is especially important
when driving in colder climates.
- If the appropriate coolant additive is not
available in an emergency, do not add any
other additive . You could damage the en-
Checking and Filling
gine. If this happens, only use water and re­
store the correct mixture ratio with the
specified coolant add it ive as soon as possi­
ble.
- Only refill with new coolant .
- Radiator sealant must not be mixed with
the coolant.
Adding coolant
Fig. 184 Engine compartment: coolant expansio n ta nk
cover
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Observe the safety precautions ¢ A in Working
in the engine comportment on page 235.
Checking the engine coolant level
.,. Park your vehicle on a leve l surface .
.,. Switch the ignition off.
.,. Read the coolant level on the coolant expansion
tank
¢ page 237, fig . 181. The coolant level
must be between the markings when the en­
gine in cold . When the engine is warm it can be
slightly above the upper mark ing .
Adding coolant Requirement: there must be a residual amount of
coolant in the expansion tank
¢ (D .
.,. Let the engine cool down.
.,. Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockw ise
Q .&, .
.,. Add coolant m ixed in the correct rat io
¢ page 241 up to the upper marking .
.,. Make sure that the fluid level remains stable.
Add more coolant if necessa ry .
.,. Close the cap securely .
Coo lant loss usually indicates there is a leak. Im-
mediately drive your vehicle to an author ized .,..
241

Emerg ency assis ta nce
Emergency assistance
Trunk escape latch
In cas e of an emergency , the r ear lid can be
opened from the inside using the trunk escape
latch.
Fig. 192 Luggage compartment: Trunk escape latc h
• Pu sh the latch in the direction of the arrow un­
til the lock releases .
The trunk escape latch inside the rear lid is made
of fluorescent material to g low in the dark.
_& WARNING
The trunk escape latch is to be used only in an
emergency.
General information
• Park the vehicle as far as poss ible from moving
traff ic in the event of a breakdown . In the event
of a flat tire , park the vehicle on a level surface .
It you are on a steep hi ll, be especially careful.
• Set the parking brake.
• Place the selector lever in the P position.
• Switch the emergency flashers on.
• Have the passengers exit the vehicle. They
should move to a safe place, for example be ­
hind a guard rail.
_& WARNING
Follow the steps given above . This is for your
protection and the for the safety of other driv­
ers .
272
Equipment
Vehicle tool kit/tire mobility kit/
compressor
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AUD I }
Fig. 193 Lu ggage compa rtmen t: cargo floor closed
The vehicle tool kit, t ire mobility kit and com­
pressor are stored in the luggage compartment
u nder the cargo floo r cover .
• Push on the plastic handle and lift up the cargo
floor .
• Open the cargo floor.
Completely retract the vehicle jack a rm before
stor ing the veh icle jack* .
_& WARNING
Improper use of the veh icle jack can cause se­
rious pe rsonal injuries.
- Never use the screw driver hex head to
tighten wheel bolts, since the bo lts cannot
attain the necessa ry tightening torque if yo u
use the hex head, potentially causing an ac ­
cide nt.
- The factory-supplied jack is intended only
for your vehicle mode l. Under no circum­
stances should it be used to lift heavy
vehicles or other loads; you risk injuring
yourse lf.
- Never start the engine when the vehicle is
raised , which cou ld cause an accident .
- Support the vehicle securely with appropri ­
ate stands if work is to be performed under­ neath the vehicle; otherwise, there is a po­
tential risk for injury.
- Never use the jack supplied with your Aud i
on another vehicle, particularly on a heavier
one. The jack is only su itab le for use on the
vehicle it came with .

Emergency assistance
Loosening the wheel bolts
Fig. 199 Changing a tire: loosen the wheel bolts
• Slide the wheel wrench (from the vehicle tool
kit) all the way onto the wheel bolt.
• Turn the wheel bolt approximately one turn to
the left -arrow-. To reach the required torque,
hold the end of the wheel wrench. If the wheel
bolt will not loosen, press carefully on the
whee l wrench with your foot. Hold onto the ve­
hicle securely while during this and make sure
your stance is stable .
A WARNING
To reduce the risk of an accident, only loosen
the wheel bolts gently (one turn) before rais­
ing the vehicle with the veh icle jack*.
Raising the vehicle
Appl ies to: ve hicles w ith vehicle jack
- ,tr.-----,:
Fig. 200 Sill: markings (examp le)
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Fig. 201 Sill: positio ning the vehicle jack
• Place the veh icle jack* (vehicle tool kit) on a
firm s urface. Use a flat, stable support if neces­
sary. On a slippery surface such as tile, you
should use a non-slip pad (such as a rubber
mat)
c:> & .
• Find the marking on the sill that is closest to
the tire that will be changed
c:> fig. 200. Behind
the marking, there is a lifting point on the side
sill for the vehicle jack*.
• Tu rn the vehicle jack* located u nder the mount­
ing point on the sill to raise the jack until its
arm
(D c:> fig. 201 i s located under the desig­
nated mou nting point .
• Align the vehicle jack* so the arm @engages in
the designated mounting point in the side sill
and the base @lies flat on the ground. The
base @must be direct ly under the mounting
point @.
• Continue raising the vehicle jack* until the
wheel lifts off the ground slightly.
A WARNING
- Make sure the vehicle jack* is stable. There
is a risk of injury when the ground is slick or
soft, because the vehicle jack* could slide or
sink.
- Only raise your vehicle w ith the vehicle jack*
provided by the factory. If you use a vehicle
jack designed for another vehicle, your vehi­
cle can slide and cause injury .
- Pos ition the vehicle jack* only at the desig­
nated mounting points on the side sill and
align the jack . Otherwise, the vehicle jack*
co uld slip and cause an injury if it does not
have sufficient hold on the vehicle.
- To reduce the risk of an accident, never start
the engine when the vehicle is raised.

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-To reduce the risk of injury, support the ve­
hicle securely with suitable stands if work is
to be performed underneath the vehicle.
- To help prevent injury to yourself and your
passengers:
- Do not raise the vehicle until you are sure
the jack is securely engaged .
- Passengers must not remain in the vehicle
when it is jacked up.
- Make sure that passengers wait in a safe
place away from the vehicle and well away
from the road and traffic.
- Make sure jack position is correct, adjust
as necessary and then continue to raise
the jack.
- If work has to be done under the vehicle,
ensure that it is safely supported on suita­
ble stands -risk of injury!
- Never start the engine when the vehicle is
on the jack -risk of accident!
(D Note
Do not lift the vehicle by the sill . Position the
vehicle jack* only at the designated mounting points on the side sill. Otherwise, your vehicle
will be damaged.
Removing and mounting a wheel
Fig. 202 Wheel : internal hex socket to turn the wheel
bolts
Emergency assistance
Fig. 203 W hee l: alignment pin in the top ho le
Removing a wheel
.,. Remove the top wheel bolt completely using
the hex socket in the screwdriver handle (in the
vehicle tool kit)
c::> fig. 202 and place it on a
clean surface.
.,. Install the alignment pin (from the vehicle tool
kit) by hand into the empty hole
c::>fig. 203 .
.,. Remove the rest of the wheel bolts.
.,. Remove the wheel
c::>0. The alignment pin re-
mains in the hole while doing this.
Install a wheel
Read the directions on c::> page 2 78 when instal­
ling unidirectional tires.
.,. Slide the wheel on over the alignment pin
c::>(D.
.,. Install the wheel bolts and tighten gently using
the hex socket.
.,. Remove the alignment pin and also tighten the
remai ning wheel bolt .
.,. Carefully lower the vehicle using the vehicle
jack* .
.,. Tighten the wheel bolts in a diagonal pattern
using the wheel wrench .
The wheel bolts must be clean and loosen/tight­
en easily. Check the contact surfaces for the
wheel and hub . Contaminants on these surfaces
must be removed before installing the wheel.
A WARNING
-
Never use the hex socket in the screwdriver
handle to tighten the wheel bolts . Using the
hex socket will not achieve the required tight­
ening torque, which increases the risk of an
accident .
277

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-Always store damaged whee l, jack and too ls
securely in the luggage compartment. Oth­ erwise, in an accident or sudden maneuver
they could fly forward, causing injury to pas­
sengers in the vehicle .
Spare tire
General information
Applies to: veh icles with space-saving spa re t ire (compact
spare tire)
A U DI
Fig. 204 Luggage co mpa rtment : spar e tir e
Fig. 205 Sp are t ire (ex ample)
The spare tire is intended for short-term use on­
ly . Have the damaged t ire checked and replaced if
necessary by an author ized Audi dealer or author­
ized Audi Service Fac ility as soon as possib le.
T here are some restrictions on the use of the
compact spare tire . The compact spare tire has
been designed specifica lly for your type of veh i­
cle . Do not replace it w ith the spare tire from an­
o ther type of vehicle.
Removing the spare t ire
.. Turn the handle c:> fig . 204 © counter-clock­
wise .
.. Remove the spare tire .
Emergen cy a ssis tanc e
Removing the vehicle jack
.. Lift up the cover on the right side of the lug­
gage compartment and remove the vehicle
jack.
Snow chains
For technical reasons, the use of snow chains on
t h e compact spare tire is not pe rmitted.
If you have to dr ive with snow chains and a front
t ire fails , mount the spare wheel in p lace of a
rear tire . Install the snow chains on the rea r tir e
t h at you removed, and i nstall that in place of the
front t ire that fai led.
A WARNING
-
- After insta lling a spare tire, the tire pres ­
sure must be checked as soon as possible .
The tire pressure is availab le on ¢
page 256,
fig. 191.
-If the spare tire is more t han 6 years old,
use it only in an emergency and with ex­
treme caut ion and careful driving.
- The spare tire is intended only for tempora­
ry and short-term use. It should be replaced
as soon as poss ible with the normal whee l
and tire .
- After mounting the compact spare tire, the
tire pressure must be checked as soo n as
possible . The tire pressure of the compact
spa re ti re must be 61 ps i (420 kPA); other­
wise, you risk having an accident.
- Do not dr ive faster than SO mph (80 km/h) .
You risk having an acc ident.
-Avoid full -th rottle acceleration, heavy brak­
ing, and fast corner ing . You r isk hav ing an
accident .
- Never drive using more than one spare wheel and ti re . You r isk having an accident .
- Normal summer or winter t ires must not be
mounted on the compact spare wheel rim .
- For technical reasons, the use of ti re chains
on the spare t ire is not permitted .
If it is
necessa ry to drive w it h tire cha ins, the spare
wheel mus t be mounted on the front axle in
the event of a flat in a rear t ire. The newly
a vailab le fro nt wheel mus t the n be ins talled
i n place o f the rear wheel wit h the flat tire .
~
279

Emergency situations
(D Note
Improper hook -up of ju mper cables can r uin
the generato r.
- Always con nect P OSITIVE( +) to POS ITI VE
( + ), and NEG ATI VE( -) to NEGATIVE( -)
ground post of t he battery manage r contro l
u nit .
- Check that a ll sc rew p lugs on the battery
cells are sc rewed in firmly . If not, t ighten
plugs p rior to connect ing clamp o n negat ive
b attery t erminal.
- Please note t hat the procedure fo r con nect ­
i ng a jumper cable as desc rib ed above ap ­
plies specifica lly to the case of yo ur vehicle
being jum p starte d. When you a re giv ing a
ju mp sta rt to anothe r vehicle, do
not con­
n e ct t he neg ative( -) ca b le to the neg ative
(- ) termin al o n t he dis ch arged battery @
¢
fig . 21 1. In ste ad, securely connec t the
negative (-) cab le to either a so lid metal
compo nent that is f irm ly bolted to the e n­
gine block o r to the engine bloc k itself. If
the battery that is bei ng cha rged does not
vent to the outside, escap ing battery gas
could ignite an d exp lode!
Towing with a tow truck
General hints
Your Audi requires special handling for towing.
The fo llow ing informa tion is to be used by com­
mercial tow truck operators who know how to op­
era te the ir equipmen t sa fe ly .
- Never tow your Audi. Towing will cause dam­
age to the engine and transmi ssion.
- Never wrap the safety chains or winch cables
around the brake l ines .
- To prevent unnecessary damage, your Audi
must be transported with a flat bed truck.
- To load the vehicle on to the flat bed , use the
towing loop found in the vehicle tools and at­
tach to the front or rear anchorage
¢ page 286 and ¢ page 287.
286
A WARNING
A veh icle being towed is not safe for passe n­
ge rs . Neve r allow a nyone to ride in a vehicle
be ing towed, fo r any reason .
Front towing loop
Fig. 212 Fron t bumper : cover
Fi g. 2 13 Fron t bumper : install ing the tow ing loop
The threaded opening for the towing loop is lo­
cated behind a cover on the rig ht side of the front
bumper .
.. Remove the towing loop f rom the vehicle too l
kit¢
page 272.
.. Press inward on the
upper left side of the cap
to remove i t from the bumper ¢
fig. 212 .
.,. Tighten the towing loop in the threaded o pen­
ing until it s tops ¢
fig. 213 and then tig hten it
w it h a wheel w re nch.
.,. After usi ng, p lace the tow ing loop b ack in the
veh icle tool kit.
A WARNING
If t he t ow ing l oop is not tig htened unt il it
stops when installing, the threads may be pu lled out when towing the vehicle and that
could cause an accident .
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Rear towing loop
Fig. 214 Rea r bumper: cove r
Fig. 215 Rear bumper: installing the towing loop
There are threads located beh ind the right side of
the rear bumper where a tow ing loop can be in­
stalled .
• Remove the tow ing loop from the vehicle tool
kit
¢ page 272.
• To remove from the bumper, push the cap in ­
ward in the
lower area -arrow- and lift it up in
the
upper area ~ fig. 214 .
"Tighte n the towing loop in the threaded open­
ing until it stops
~ fig . 215 and then tighten it
with a whee l wrench.
"A fter using, place the towing loop back in the
vehicle tool kit .
.&_ WARNING
If the towing loop is not tightened until it
stops when installing, the threads may be
pulled o ut when tow ing t he veh icle and that
could cause an acc ident.
-
Emergency situations
Loading the vehicle onto a flat bed truck
Fig. 216 Veh icle on flat bed truck
Front hook up
• Align the vehicle with the centerline of the car
carrier ramp.
" Attach the winch hook to the front towline eye
previously installed .
Rear hook up
.. Align the vehicle with the centerline of the car
carrier ramp.
" Attach the winch hook to the rear towline eye
previously installed .
@ Tips
Check carefully to make sure the hook-up is
secure before moving the car up the flatbed
truck ramp .
287

Consumer information
scope of maintenance and repairs which can be
carried out by vehicle owners.
Also, safety and
environmental
concerns place very strict limits
on the nature of repairs and adjustments to en­
gine and transmission parts which an owner can
perform .
Maintenance, adjustments and repairs usually re­
quire special tools, testing devices and other
equipment available to specially trained work­
shop personnel in order to assure proper per­
formance, reliability and safety of the vehicle and
its many systems .
Improper maintenance, adjustments and repairs
can impair the operation and reliability of your
vehicle and even void your vehicle warranty.
Therefore, proof of servicing in accordance with
the maintenance schedule may be a condition for
upholding a possible warranty claim made within
the warranty period.
Above all, operational safety can be adversely af­
fected, creating unnecessary risks for you and
your passenger.
If in doubt about any servicing, have it done by
your authorized Audi dealer or any other properly
equ ipped and qualified workshop. We strongly
urge you to give your authorized Audi dealer the
opportunity to perform all scheduled mainte­
nance and necessary repairs. Your dealer has the
facilities, original parts and trained specialists to keep your vehicle running properly.
Performing limited maintenance yourself
The following pages describe a limited number of procedures which can be performed on your vehi­
cle with ordinary tools, should the need arise and
trained personnel be unavailable. Before per­
forming any of these procedures, always thor­
oughly read all of the applicable text and careful­
ly follow the instructions given. Always rigorously
observe the
WARNINGS provided.
Before you check anything in the engine com­
partment, always read and heed all WARNINGS
c> & and c> & in Working in the engine compart­
ment on page 235.
294
A WARNING
-
- Serious personal injury may occur as a result
of improperly performed maintenance, ad­
justments or repairs .
- Always be extremely careful when working
on the vehicle. Always follow commonly ac­
cepted safety practices and general com­
mon sense. Never risk personal injury.
- Do not attempt any of the maintenance,
checks or repairs described on the following pages if you are not fully familiar with these
or other procedures with respect to the ve­ hicle, or are uncertain how to proceed.
- Do not do any work without the proper tools
and equipment. Have the necessary work
done by your authorized Audi dealer or an­
other properly equipped and qualified work­
shop.
- The engine compartment of any motor vehi­
cle is a potentially hazardous area. Never
reach into the area around or touch the radi­
ator fan. It is temperature controlled and
can switch on suddenly - even when the en­
gine is off. The radiator fan switches on au­
tomatically when the coolant reaches a cer­
tain temperature and will continue to run
until the coolant temperature drops.
- Always switch off the ignition before anyone
gets under the vehicle.
- Always support your vehicle with safety
stands if it is necessary to work underneath
the vehicle. The jack supplied with the vehi­
cle is not adequate for this purpose and
could collapse causing serious personal in­
Jury.
- If you must work underneath the vehicle
with the wheels on the ground, always make
sure the vehicle is on level ground, that the
wheels are always securely blocked and that
the engine cannot be started.
- Always make sure the transmission selector
lever (automatic transmission) is in P (Park
position) and the park brake is applied. ..,