radiator cap AUDI S3 2011 Owners Manual

Instruments and warning/indicator lights
Engine cold
As long as the need le remains at the lef t en d of the gauge, the engine
s till has not reac hed its operati ng te mperature . Avoid hig h eng ine
speeds, heavy engine loads a nd heavy throttle.
Normal temperature
W hen the eng ine has reached its operating temperature, the need le
w ill move into the middle of the gauge and rema in there . If the
engine is working ha rd at high outsi de temperatures, the needle may
tur n further to the rig ht. Thi s is no cause fo r concern as long as the _F_
wa rning light in the i nstr ument cluster does not ill uminate.
Wh en the _;_ w ar ning light sta rts to fla sh, thi s can mea n one of two
things : either the coolant
temperature is too h igh, or t he coolant
level is too low => page 32.
& WARNING
• Always observe the warning in=> page 218, "Engine com part·
ment " before opening the engine hood and checking the engine
c oolant level.
• Never open the engine hood if you see or hear steam, or if you
see engine coolant dripping from the engine compartment. You
could burn yourself. Let the engine cool off first so that you cannot
hear or see any steam or engine coolant.
0 Note
• Moun ting addition al lights or accessorie s in fron t of the a ir inlets
red uces the cooling effect of the radiator. At high o utside tempera ­
tu res o r high eng ine lo ad, t he e ngine cou ld over heat .
• The front spoi ler has been designed to prope rly d istribute the
c oo ling a ir w hen the vehicle is moving. If the spoiler is d amaged, this
co uld reduce the coo ling effect and the eng ine could t hen overheat.
Ask your au thor ized A udi d ealer for assist ance .•
Fuel gauge
T he f uel gauge wo rks only whe n the ignition is on.
W hen the nee dle rea ches the red area, t he war ning ligh t in t he ins tru­
ment cl uster will illum inate=>
page 34 . This mea ns you have
app roximate ly 1.8 gallons (7 liters) of f uel left in t he tank.
Time to
refuel!
The tota l tan k capacity of your vehicle is listed in => page 296 , "Data".
0 Note
Never run the ta nk completely d ry ! An irregular s upply of f uel can
c a us e eng ine mi sfir ing and f uel could ente r into t he e xhaus t system.
T he catalyt ic converter could the n overheat a nd be damaged. •
Speedometer with odometer
The spee do meter sh o ws you the ve h icle s pee d, an d th e
o do met er sho ws yo u ho w many mile s (k il om eters) you
have d riv en .
Fig. 4 Spee dometer
close-up : odometer
di splay
The o dometer and tri p odometer are located inside the speedomete r.
• USA mo dels - Mile s
• Canad ian models -Kilometers

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Closing the engine hood
- Pull the hood down until the pressure from the strut is
reduced.
- Let the hood
drop down and latch in place . Do not try to
push it shut;
it may fail to engage=> &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment!
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of
injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area!~
&
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Set the parking brake fully.
& WARNING (continued)
• Move selector lever of automatic transmission to "P" (Park);
put manual transmission in Neutral.
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment.
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm. The coolant system is pressurized and hot coolant could
spray out!
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary:
-Always disconnect the battery .
- Never smoke or work near heaters or open flames. Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine is
running or being started, never touch:
- Ignition cables
- Other components of the high voltage electronic ignition
system.
• If you must perform a check or repair with the engine running: .,_

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level sensor, we still recommend you check the coolant leve l from
ti me to time.
Coolant loss
Coolan t loss may ind ic a te a leak in the coo ling sys tem. In the event of
coo lant loss, the cooli ng system should be inspected immed iately by
your au thor ized A udi dealer.
It is no t enough merely to add coolan t.
In a
s ealed system, losses can occur only if the boiling point of the
coo lant is exceeded as a res ult of overheating .
(D Note
Do not add any type of radiator leak sealant to yo ur vehicle's engine
c oo lant. Addi ng radia tor repa ir fluid m ay adverse ly affect the fun c­
tion and perfo rmance of your cooling system and could result in
damage not cove red by yo ur New Vehi cle Lim ited Warranty .•
Adding coolant
B e very careful when adding engine coolant.
Before you check anyt hing in the eng ine compartment ,
always read and heed all WARNINGS=> & in " Working i n
the e ngine compartment" on page
226.
-Tur n off the eng ine.
- Let t he engi ne c ool d ow n.
- Place a thick rag over the coolant expansion tank
=> pa ge 235, fig . 166 and carefully twist t he cap cou nte r­
clockwis e
=> &.
- Add coo lant.
- Tw ist the ca p on aga in
tightly .
Replacement eng ine coolant must conform to exact spec ificat ions
=> page 234, " Coolant" . Even in a n emergency, if coolant additive
Gl2 ++. Gl2+ or Gl2 is not available , do not use a d ifferent addit ive .
Use pla in w ate r ins tead until you can ge t the cor rect addi tive and can
restore the co rrect ratio . This sho uld be done as soon as possib le .
If you have lost a considerable amount of coolant, then you s houl d
ad d c old antifree ze and cold water only when the engine is cold .
Always use
new engine coo la nt w hen refilling .
Do not fill coolant above the "M AX" mark. Excess coo lant will be
forced out th rough the p ress ure relief va lve in the cap w hen the
eng ine becomes hot.
& WARNING
• The cooling system is under pressure and can get very hot.
Reduce the risk of scalding from hot coolant by following these
steps.
-Turn off the engine and allow it to cool down.
- Protect your face , hands and arms from escaping fluid and
steam by covering the cap with a large, thick rag.
- Turn the cap slowly and very carefully in a counter-clockwise
direction while applying light , downward pressure on the top
of the cap.
- To avoid being burned, do not spill antifreeze or coolant on
the exhaust system or hot engine parts . Under certain condi­
tions, the ethylen e gly col in engine coolant can catch fire .
• Antifreeze i s poi sonou s. Always store antifreeze in it s original
container and well out of the reach of children.
• If you drain the coolant , it mu st be caught and safely stored in
a p roper container clearly marked "poison ".
(D Note
• Coolant pollutes the environment and could cause an engine fire.
E xcess coolant w ill be forced o ut thro ugh the pressure relie f va lve in
the cap when the e ngine becomes hot .
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