2008 AUDI TT ROADSTER battery capacity

Checkin g and fillin g ---------------~-!':WIii
•
& WARN ING (co ntinued)
- Use only br ake flu id th at m eet s SAE spec ificati on J 1703 and
c onf orms to F ed eral Motor Vehi cle St and ard 11 6. Always ch ec k
w ith your a uthori zed A ud i de aler to m ake sure you are u sin g
the corre ct brake fluid . Th e co rrect typ e of br ake fluid i s also
indic ate d on the br ake fluid res ervo ir .
- The br ake fluid mu st be ne w. Heavy u se of the br ake s c an
c au se a vapor lo ck if the brake fluid i s left in the s yste m too
long. Thi s ca n seriou sly affe ct the eff iciency of the brake s as
w ell as your safety . This could resu lt in an a ccident .
0 Note
Brake fluid wi ll damage the paint of your vehicle.
Because of the prob lem of proper disposal of brake fluid as well as
t he special too ls required and the necessary expertise, we recom­
mend that you have the brake f luid changed by your authorized Audi
dea ler .•
Battery
General information
Your vehicle is equipped with a specia l battery, an AGM battery. This
battery is located in the luggage compartment and must be
replaced with an origina l equipment battery. Under normal oper ­
ating conditions, the battery is
maintenan ce-free .
Have the battery checked when you take your vehicle in for service.
You a re we ll advised to replace a battery that is olde r th an 5 years .
Disc onn ectin g th e batt ery t erm inal s
Some vehic le functions (power window regulators, for e xample) are
lost if the battery terminals are disconnected. These functions have
to be relearned after the batte ry term inals are connected again. To
prevent this, the battery should only be disconnected from the
vehicle electrical system when abso lutely necessary for repairs.
V ehi cle s not dri ven for long period s
If you are going to le t your vehicle stand for a long t ime a nd not
drive it, you should remember there are electrica l components
which are still functioning and they will draw energy from the
battery and drain it, for examp le, the engine immob ilizer. To prevent
this, you can either charge the battery occasionally to keep it in
good working condition or you can d isconnect the negative cab le
on the battery.
W inter op era ti on
During the winter months, battery capacity tends to decrease as
temperatures drop. This is because more power is a lso consumed
while starting, and the headlights, rear window defogger, etc., are
used more often .
Avoid unnecessary power consumption, particularly in city traffic or
when trave ling on ly shor t distances . Let your au thorized Audi dea ler
check the capacity of the vehicle battery before winter sets in
=>
page 235 . A well charged battery will not on ly prevent start ing
p rob lems when the weather is cold , but wi ll a lso last longer .
Replacing battery
The new battery must h ave the same capacity, voltage (12 volts},
amperage, construction and p lug sea ling, as the origina l battery.
Specifications are l isted on the battery hous ing. Batteries specially
developed by Audi fulfill the ma intenance, output, and safety
requirements.
When installing the battery, make sure the ignition and all electrical consumers are switched off=>
0. .,_
Vehicle care I t •

Checking and filling -
------------- --------=----" =---------
0 Note
Do not overfill the battery, otherwise battery acid will overflow
through the vent opening. This can damage the paint and cause
corrosion. •
Checking the battery acid level on
conventional batteries *
The acid level of a conventional battery can be checked
visually.
Fig. 158 Battery : Elec­
trolyte level
-Check the electrolyte level on the front of the battery. The
level should be between the "MIN" and "MAX" markings.
If the electrolyte level is below the "MIN" level, have an authorized
workshop fill the battery cell with
distilled water.•
Charging of battery
Starting the engine requires a well charged battery.
-Always read and heed all WARNINGS below => & and
=> & in "Working on the battery" on
page 232.
- Switch off the ignition and all electrical consumers. - Make sure
the area is well ventilated when you charge
the battery.
- Connect charger cables.
ALWAYS connect charger cables
POSITIVE
(v to POSITIVE (v ; NEGATIVE Q to NEGATIVE
o.
- Switch on the charger.
- Make sure the charging rate is not over 6 amps.
- Turn off the charger=>&.
- Disconnect the charger cables.
- Connect both battery cables to the battery if necessary -
first plus, then minus.
It is not necessary to remove the battery from th e engine compart­
ment, and it is also not necessary to disconnect the cables.
Normally, a battery should be charged at no more than 10 percent
of its rated capacity .
For example, a charging current of 4.5 amps would be used on a
battery rated at 45 Ah. Rated capacity of the battery in your vehicle
is listed on the battery housing.
The battery caps should
not be opened when charging a battery.
& WARNING
Charging a battery can be dangerous.
• Never charge a frozen battery. It may explode because of gas
trapped in the ice . Allow a frozen battery to thaw out first.
• Do not reuse batteries which were frozen. The battery housing
may have cracked and weakened when the battery froze .
• Charge the battery in a well ventilated area. Keep away from
open flame or electrical spark. Do not smoke. Hydrogen gas gener-
ated by the battery is explosive. .,_
Vehicle care I I irechnical data

___ C_h_ e_ c_k _in --== g'-- a_n _d_ f_il _li _n ..:::g:::..- ___________________________________________ _
& WARNING (continued)
• To reduce the danger of explosion, never connect or disconnect
charger cables while the charger is operating.
• Fast charging a battery is dangerous and should only be
attempted by a competent technician with the proper equipment.
• Battery acid that may spill during charging should be washed
off with a solution of warm water and baking soda to neutralize
the acid.
0 Note
Never use a fast charger as a booster to start the engine. This will
seriously damage sensitive electronic components , such as control
units, relays, radio, etc., as well as the battery charger.
[ i ] Tips
The vehicle battery must not be charged with a standard small
charger that plugs into the cigarette lighter or outlet .•
Windshield /headlight washer
container
Using plain water is not adequate for filling the wind­
shield washer system and the headlight washer system*.
Fig . 159 Fender, left:
Windshield washer
fluid reservoir
The washer fluid container is marked with the symbol e.;. on
its cap.
- Before you check anything in the engine compartment,
always read and heed all WARNINGS=> & in "Working
in the engine compartment" on
page 220.
-Lift the filler cap tongue to add washer fluid. You can fill
the container to the top.
- Press the cap back onto the filler neck after filling the
container .
You can find the reservoir capacity in the table in~ page 291.
Use winterized windshield washer solvent during the cold season
even though the vehicle is equipped with heated washer jets. It
helps to keep your windshield clean and prevents the fluid from
freezing in the winter.
Follow the directions on the container for the correct amount to be
used.
~

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
Groove
means the space between two adjacent tread ribs.
Load rating (code)
means the maximum load that a tire is rated to carry for a given
inflation pressure . You may not find this information on all tires
because it is not required by law.
Maximum load rating
means the load rating for a tire at the maximum permissible infla­
tion pressure for that tire.
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options weight
Maximum (permissible) inflation pressure
means the maximum cold inflation pressure to which a tire may be
in flated. Also called "maximum inflation pressure ."
Normal occupant weight
means 150 lbs. (68 kilograms) times the number of occupants
seated in the vehicle up to the total seating capacity of your vehicle.
Occupant distribution
means distribution of occupants in a vehicle .
Outer diameter
means the overall diameter of an inflated new tire.
Overall width
means the linear distance between the exteriors of the sidewalls of
an inflated tire, including elevations due to labeling, decorations, or
protective bands or ribs .
Ply
means a layer of rubber -coated parallel cords.
Production options weight
means the combined weight of those installed regular production
options weighing over 5 lbs. (2.3 kg) in excess of those standard
items which they replace, not previously considered in curb weight
or accessory weight, including heavy duty brakes, ride levelers,
heavy duty battery, and special trim.
Radial ply tire
means a pneumatic tire in which the ply cords that extend to the
beads are laid at substantially 90 degrees to the centerline of the
tread.
Recommended inflation pressure
see =:> page 239, "Cold tire inflation pressure".
Reinforced tire
means a tire designed to operate at higher loads and at higher infla­
tion pressures than the corresponding standard tire. Reinforced
tires my be identified as "XL", "xi", "EXTRA LOAD", or "RF" on the
sidewall.
Rim
means a metal support for a tire or a tire and tube assembly upon
which the tire beads are seated .
Rim diameter
means nominal diameter of the bead seat. If you change your wheel
size, you will have to purchase new tires to match the new rim diam ­
eter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between rim flanges .

.,,___E_ m_ e_r -=g :...e_ n _ c-=y _ s_ i_t _u _a _t_ i_o _n_ s _______________________________________________ _
Emergency situations
General
This chapter is intended for trained emergen cy crew s and working
personnel who have the necessary tools and equ ipment to perform
the se operations. •
Starting by pushing or towing
0 Note
Vehicles with an automatic tran smission cannot be started by
pushing or towing . •
Starting with jumper cables
If n ecess ary, the e ngin e c an b e starte d by conne ctin g it to
the ba ttery of anoth er vehicle .
If the engine shou ld fai l to start because of a discharged or weak
ba tte ry, the bat te ry can be connected t o the ba ttery of
another
vehic le, using a pair of jumper cables to start the engine.
Jumper cables
Use
only jumper cables of suffic iently large cross section to safely
c a rr y th e st arter cu rre nt. Re fer to th e m an ufacture r's spec ific a tio ns.
Use on ly jump er cables wh ic h have
insulated termina l c lamps and
a re prope rly marked for distinction :
plus (+l cable in mo st cas es c olo red red
minus (-l cable in most cases co lored black .
& WARNING
Batteries contain electricity , acid , and gas . Any of these can cause
very serious or fatal injury. Follow the instructions below for safe
handling of your vehicle 's battery .
• Always shield your eyes and avoid leaning over the battery
whenever possible .
• A discharged battery can already freeze at temperatures just
below 32 °F (0 °Cl. Before connecting a jumper cable, the frozen
battery must be thawed completely , otherwise it could explode .
• Do not allow battery a cid to contact eyes or skin . Flush any
contacted area with water immediately.
• Improper use of a booster battery to start a vehicle may cause
an explosion.
• Vehicle batteries generate e xplosive gases . Keep sparks, flame
and lighted cigarettes away from batteries.
• Do not try to jump start any vehicle with a low ac id level in the
battery.
• The voltage of the booster battery must also have a 12-Volt
rating . The capacity (Ahl of the booster battery should not be
lower than that of the discharged battery . Use of batteries of
different voltage or substantially different "Ah " rating may cause
an e xplosion and personal injury .
• Never charge a frozen battery. Gas trapped in the ice may cause
an explosion .
• Never charge or use a battery that has been frozen . The battery
case may have be weakened.
• Use of batteries of different voltage or substantially different
capacity (Ah ) rating may cause an explosion and injury . The
capacity (Ahl of the booster battery should not be lower than that
of the discharged battery . .,_

__ _!:_A~l'.!:p~ h~ a~ b~e~ t~ic ~a..'.... l ~in~d~e ~x~ --------------------------------------------
Proper disposal of drained brake fluid ...
230
Proper disposal of drained engine
coolant . ............ .... ...... . 228
Proper disposa l of drained engine oil
225,226
Recycling used engine oil ..... .... 225
Un leaded fuel .... ............... 214
What should I do with an old battery?
231
EPC
See Electronic power control . . . . . . . . 17
ESP
See Electronic Stability Program .... 184
Event Da ta Recorder (EDR) . . . . . . . . . . . 184
Expansion tank 228
F
Fan 100
Radiator . . . . . . . . . . . . . . . . . . . . . . . . 229
Flat tire Changing ....................... 267
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . 134
Fog lights, front ..................... 73
Folding master key with remote contro l . 47
Fo lding top .. ..... .. .... .... ........ 60
Automatic folding top . . . . . . . . . . . . . 62
Care and cleaning ...... ........ .. 203
Emergency operation . . . . . . . . . . . . . . 64
General . .... ... .. .... .... ...... .. 60
manual folding top ........... ..... 61
Warning/indictor lights .. ........ .. 18
Wind deflector . . . . . . . . . . . . . . . . . . . . 64 Foot pedals
. . . . . . . . . . . . . . . . . . . . . . . . 134
For the sake of the env ironment
Gasoline fumes and the environment 2 16
Letting your engine warm up . ..... 107
Reducing engine noise by early
upshifting .................. .... 12
Refueling ... .. .... .... .... ...... 216
Saving fuel by early upshifting ...... 12
Front airbags Description ..... ..... ...... ...... 150
How they work . . . . . . . . . . . . . . . . . . . 155
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Adjusting ......... .... .... ...... 131
Adjusting the manual seats .. .... ... 89
Child restraints in the front seat .... 147
Fronta l col lisions and the laws of physics ...
138
Fuel Additives .. ....... .... .......... 214
Blended gasoline ................. 214
Consumption .. ............. ...... 39
Fi ller neck . .... ........ ... ....... 215
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . 14
Gasoline ........... ... .... .... .. 214
Gasoline additives .... .... ... .. ... 215
Octane rating ... .. .... .... .... ... 214
Recommendation . . . . . . . . . . . . . . . . 214
Refuelling ..... ........ .... ... ... 216
Reserve .. .... ....... ...... .... ... 14
Tank capacity . .... ... .... ..... ... 291
Unlocking the fuel filler flap by hand 218
Fuel fi ller cap ......... .... .... ... .... 24
Fuel supply too low ........ ....... ... 35 Fuse
arrangement .... ... .. .. . .... .. . 274
G
Garage door opener ... .......... .... 121
Gas discharge lamps ...... ... .... ... 277
Gauges Engine coolant temperature ........ 13
Fuel gauge .... .... ....... .... .... 14
Tachometer ........... ...... .... . 12
Gearshift lever
6 -speed manual transmission ... ... 113
Generator Warning/indicator lights ............ 19
G lossary of tire and loading terminology ...
239
G love compartment ...... .... .... .... 96
Gross Vehicle Weight Rating (GVWR) ... 289
H
Head restraints ........ ... ........ .. 132
Adjusting .. ........... .... .... .. 132
Headlight Defective . . . . . . . . . . . . . . . . . . . . . . . . . 36
Headlight range control
defective .......... .... ....... .... 35
Headlights .... ....... .... ... .... .... 69
adaptive light ...... ........ .... ... 72
Front fog lights ... .... .... .... .... 73
Switching off ... .... ...... .... .... 69
Switching on ...... .... ....... .... 69
Washer system . . . . . . . . . . . . . . . . . . . 79