2015 AUDI TT ROADSTER differential

18 Instruments and warning/indicator lights
If the J.J.) indicator lamp illuminates, the sys­
tem has switched the ESC
off. In this case, you
can switch the ignition
off and then on to
switch the ESC on again. The system is func­
tioning completely when the indicator lamp
switches
off .
If the II indicator lamp illuminates, the ESC
was switched
off with the [!I button.
Stabilization program and ABS fault! See
owner 's manual
If the DJ indicator lamp and the riJ ABS indi­
cator lamp illuminate and the driver message
appears, the ABS or e lectronic differential lock
is ma lfunctioning. This also interrupts the
ESC. The brakes st ill function with their nor­
mal power, but ABS is not active.
Drive to your authorized Audi dea ler immedi­
ately to have the malfunction corrected .
For more informat ion about the ESC
<=>page 141.
ABS/ (8 ) Anti-lock brake system
This warning/indicator light monitors the ABS
and the electronic differential lock (EDL).
The warning/indicator light 1111 (USA mod-
e ls)
;riJ (Canada models) will come on for a
few seconds when the ignition is switched on .
The light will go o ut after an automatic check
sequence is completed.
There is a malfunction in the ABS when:
-The warning/indicator light does not illumi­
nate when you switch the ign ition on.
- The warning/indicator light does not go out
after a few seconds .
- The warning/indicator light illuminates
wh ile driving .
The ESC indicator light also illuminates if
there is a malfunction in the ABS . The mes ­
sage
Stabilization program and ABS: fault!
See owner's manual
also appears in the in­
strument cluster display and a warning tone
sounds .
The brake system will still respond even
without the assistance of the ABS system.
See your authorized Audi dealer as soon as
possible to restore full braking performance.
For more information regarding the ABS
<=>page 141.
Malfunction in the brake system
If the brake warning light r=> page 14 and the
ABS warning illuminate
together there may be
a malfunction in the ABS, and there may also
be a malfunction in the brake system itself
r=> &.. The ABS will not work and you will no­
tice a change in braking response and per­
formance.
In the event of a malfunction in the brake
system
the warning/ind icator light . (USA
models)/ . (Canada models) in the instru­
ment cluster flashes
r=> page 14 .
Malfunction in the electronic differential
lock (EDL)
The EDL works together w ith the ABS . The
ABS warning light wi ll come on if there is a
malfunction in the EDL system
r=> page 141.
See your authorized Audi dealer as soon as
possible .
_& WARNING
-If the Ill (USA models)/11] (Canada
models) warning light does not go out,
or if it comes on whi le driving, the ABS
system is not work ing properly. The vehi­
cle can then be stopped only wit h the
standard brakes (without ABS). You w ill
not have the protect ion ABS provides.
Contact your Audi dea le r as soon as pos­
sible.
- USA models: If the . warning light, the
G1 warning light and the 1111 warning
light come on together, the rear wheels
could lock up fi rst under hard braking .
Rear wheel lock -up can cause loss o f ve ­
hicle control and an accident. Have your
vehicle repaired immediately by your au­
thorized Audi dealer or a qualified work­
shop. Drive s low ly and avoid sudden,
hard brake applications. ..,.

142 Intelligent technology
switched on all the time. In certain situations
when you need less traction, you can switch
off ESC by pressing the button
l!l . Be sure to
switch ESC on again when you no longer need
less traction.
Anti -toc k brak ing system (ABS)
ABS prevents the wheels from lock ing up
when braking . The vehicle can still be steered
even during hard brak ing . Apply steady pres­
sure to the brake pedal. Do not pump the ped­
al. A puls ing in the brake pedal ind icates that
the system is he lp ing you to brake the vehicle .
Brake assist sy stem
The brake assist system can decrease braking
d istance. It increases braking power when the
driver presse s the brake pedal quickly in emer­
gency si tuations. You must press and hold the
brake peda l until the situation is over .
Anti-slip regulation (ASR)
ASR reduces engine power when the drive
wheels begin to spin and adapts the force to the road conditions . This makes it easier to
start, accelerate and drive up hills.
E lectronic differential lock (EDL )
The ED L brakes wheels that are spinning and
transfers the drive power to the other drive
wheel or whee ls if the vehicle is equipped with
all-wheel drive*. This function is available up
to about 60 mph (100 km/h) .
In extreme cases, EDL a utomatica lly switches
off to help keep the brake on the braked whee l
from overheating. EDL will switch on aga in au­
tomatically when conditions have returned to normal.
A WARNING
- ESC, ABS, ASR and ED L can not ove rcome
t h e laws of phy sics. This is espe cial ly im ­
por tant on slip pery or wet ro ads .
If th e
sys tems begin a ct in g to stab ilize your ve­
hicle, you shou ld imme diately change
yo ur speed to match the road and traffic
condit ions. Do not let the inc reased safe­
ty provided by these systems tempt you to take risks. Do
ing so w ill increase the
risk of a loss of veh icle control, co llision
and serious pe rsonal injuries .
- Always adapt your speed to road, traffic
and weather conditions. The risk of los­
ing control of t he vehicle increases when
driving too fast, espec ially through
curves and on slippe ry or wet roads, and
wh en dr iv ing too clos e to vehicl es u p
ahead. ESC, A BS, the brake ass ist sys­
tem, ED L and ASR cannot p reven t coll i­
si ons .
- Always acceler ate wi th sp ecial c are on
even, smoo th s urfaces such as those th at
are wet or covered with ice and snow .
The drive wheels can spin even with
these assistance systems that cannot al­ ways he lp to reduce the risk of loss of ve­
h icle co ntrol.
(D Tips
- ABS an d ASR only wo rk correct ly when
all four whee ls are equipped with identi­
cal tires . D ifferent tire si zes can lead to a
reduction in engine powe r.
- Yo u may hear noises when the systems
descr ibed are working.
- If the ind icator light Ii) or II (USA
mode ls)/ Ei] (Canada models) appears,
there may be a malfunction
¢ page 18,
¢ page 17.
Switching on and off
£SC turns on automatically when you start
the engine.
Fig . 12 1 Ce nte r conso le: ESC OFF b utto n

232 Index
E
Efficiency program ....... .. .. .. .... .. 27
F ue l economy messages ... .. .. .... .. 27
Memory levels . . . . . . . . . . . . . . . . . . . . . 23
Other equipment .. ......... .. .. .. .. 2 7
E lapsed time ... .... ....... .. .. .. .. .. 23
Electro -mechanical power assist . . . 17 , 145
Elect ronic differential lock (EDL) . . . . . . . 141
Warn ing/ indicato r lights ... .. .. .... .. 18
E lect roni c immobili ze r . . . . . . . . . . . . 12, 33
Electronic power co ntrol
EPC warning/ind icator light .. .. .. .... 19
Electronic speed limiter . . . . . . . . . . . . . . . 30
E lect ron ic S tabilization Control ( ESC) .. . 141
War ning/ indica tor l ights . .. .. .. .. .. .. 17
E mergency flasher . . . . . . . . . . . . . . . . . . . 51
War ning/ indicator lights . ...... .. .. .. 21
Emergency locking . . . . . . . . . . . . . . . . . . . 3 7
E mergency opera tion
Conve rtible top .......... .. .. .. .. .. 44
Rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
E mergency sta rting .. ... ... .. .. .. .. . 216
Emergency towing ......... .. .. .. .. . 218
Ene rgy management ....... .. .. .. .. . 14 6
B att ery power . . . . . . . . . . . . . . . . . . . . 148
D river notification . . . . . . . . . . . . . . . . . 148
Eng ine
C he ckin g and fill ing locations . .. .. .. . 166
Coolan t .. .. ............. .... .. .. . 17 1
D ata .... .. ... ... .... ... .. .. .... . 224
Hood . ..... ... . ...... ... .. .. .... . 164
Starting . . . . . . . . . . . . . . . . . . . . . . 72, 73
Starting with jumper cab les .. .. .... . 216
Stopping . ................. ...... .. 74
E ng ine compartmen t ....... .. .. .. .. . 166
Safety instructions ... ... .. .. .. .... . 164
Working in the engine compa rtment .. 164
E ng ine cooling system ...... .. .. .. .. . 17 1
A dding coolant ........... .. ...... . 17 2
Chec king the eng ine coolan t leve l .. .. . 172
M alfunc tion . . . . . . . . . . . . . . . . . . . . . . . 17
Radiato r fan . .. .. ..... ... .. .. .... . 173
Temperature ga uge .. ... .. .. .. .... .. 11
E ng ine hood
C losing .. ............... .... .... . 164
H ow to release the hood ... .. .. .... . 164 E
ngine oi l .. .... .. ... .. ..... .... . .. 166
Adding ... .... .. .. ... ..... ... .. .. 169
Additives . ... .. .. ... .. ..... ... .. .. 169
Changi ng ..... .. ............. .... 170
Checking the engine oil level ..... .... 169
Indications and conditions requir ing ex -
tra checking ... .. ... .. .. ... ..... .. 169
Oil consumpt io n .. .......... ...... . 168
Oil g rades . .. .... ............. .. .. 166
Recommende d oi l c he ck interv als . .. .. 169
Spec ifi cat ion an d viscosity .. ... .. .. .. 166
T emperature display . .. ..... .... . .. . 26
En gine o il level .. .. ................ .. 19
Engine oi l pressure (ma lfunction) .. .. .. . 16
En gine oi l sensor defective . . . . . . . . . . . . 20
Engine oil temperature indicator ........ 26
Engine speed limitation .. ..... ... .. .. . 19
En vironment
Br eak-in per io d ... ............. .. .. 149
Catalytic converter . .. .. ..... ... .. .. 150
Disposing of your veh icle ba ttery ... .. 175
Driving at high speeds . . . . . . . . . . . . . . 152
Driving to minimi ze po llution and noise 151
Fuel ...... .... .. .. ............... 162
Fuel economy .... ................. 151
Leakage from your vehicle ..... ... ... 164
L etting the vehicle stand a nd warm up . 152
Proper disposal of d rained brak e flu id . 174
P roper d isposal of d rained eng ine cool-
an t ...... .... .. ................. 172
Proper disposal of d rained eng ine
oi l . . . . . . . . . . . . . . . . . . . . . . . . . 169, 170
Recycling used engine oil ..... ... .. .. 169
Un leaded fuel .. .. ............. .. .. 160
What shou ld I do with an o ld battery? . 175
EP C
refer to Elect ronic power co ntrol ... .. . 19
E SC (Electronic Stab ilizat io n Control)
Warning/ind icator lights ........ .. .. . 17
Event Data Recorder (EDR) ........ .... 141
E xhaust tail pipes
Cleaning . ..... .. ... .. ..... .... . .. 156
E xpansion tank . . . . . . . . . . . . . . . . . . . . . 172
Exterior m irrors
Adjust ing . .... .. ............. .... . 52
Dimming ...... .. ..... ....... ... .. . 53
Heating ....... .. ..... ....... ... .. . 52