coolant reservoir AUDI A4 CABRIOLET 2009 Owners Manual

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Closing the engine hood
-Pull t he hood down until the pressure from the strut is
reduced.
- Let t he hood
drop down and latch in place. Do not try to
push it shut;
it may fai l 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
~ 6 .
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake.
& 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:
~

-Ch
ecking and filling
_ _..;:::;__=----------------
©
©
0
Coolant expansion tank (.J_ J .. .. .. .. . ... .. .. .... .
Windshield/head light washer container ( O ) ..... .. .
Po wer steering re servoi r
& WARNING
Before you check anything in the engine compartment , always
read and heed all WARNINGS
=> & in "Working in the engine
c ompartment " on
page 250. •
Applies to veh icles : w ith 6 ·cy lind er engine
3.2 liter , 6-cylinder engine (255 hp)
258
266
217
Th ese a re t he most im por tan t it em s th at you c an ch eck.
F ig . 197 Engine compartment : 3.2 liter , 6- cylinder
G) Battery ... ... .. ...... .... ... .... .... .... ..... .
0 Bra ke fluid reservoir ( l ....... .. .. .. .. ...... .. .
© Engine oil fi ller cap ('t:::n) ..•. ..• ..... .•. ...• ..•..
26 1
260
255
©
©
©
0
Engine oil dipstick (orange) ...... ..... ... .... ... .
Coolant expansion tank
( -L J .. ... ... . .... ... ... .. .
W indshield/headligh t washer c ontainer (O l .. .... . .
Powe r steering rese rvoir
& WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS
=> & in "Working in the engine
compartmen t" on
page 250. •
Engine oil
Engine oil specifications
254
258
266
2 17
The engine oil used in your Audi needs the right kind of
oil.
The engi ne in y our Audi is a sophisticated powe rp lan t tha t was built
to exacting specifications. This engine needs the right kind of
eng ine oil that meets specifications regarding quality and viscos ity
so that it can run smoothly and reliably . Choosing the right oil and
changing oil within the time and mileage interva ls printed in your
vehic le's Warranty
& Maintenance booklet matters a lot more today
than it did years ago. Audi has developed a special quality standa rd
f or e ngin e oil tha t w ill help assure that your vehicle's engine will get
the lubrication it needs for proper operation.
Modern engine lubrication has taken a quantum leap i n the last few
years. Many synthetic oils ava ilable today provide better engine
lubrication that can o utlast traditional petro leum -based oil s,
making them a smart choice for use throughout the life of your Audi.
Whether you use synthetic or petro leum -based engine oil, the oi l
tha t you use mus t conform to Audi 's oi l qual ity standard VW 502 00
to help keep your vehicle's engine running smoothly and help ._

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0 Note
• Coolant pollutes the environment and could cause an engine
fire. Excess coolant will be forced out through the pressure relief
valve in the cap when the engine becomes hot.
• If, in an emergency, only water can be added, the correct ratio
between water and antifreeze~
page 257must be restored as soon
as possible.
<£> For the sake of the environment
Drained coolant should not be reused. Always dispose of used
coolant while observing all environmental regulations. •
Radiator fan
The radiator fan switches on automatically by itself.
The radiator fan is driven by the engine via the V-belt. The viscous
clutch regulates the speed of the fan according to the temperature
of the coolant.
An auxiliary electric radiator fan* switches on and off depending on coolant temperature and other vehicle operating conditions.
After you switch the engine off, the auxiliary fan can continue running for up to 10 minutes - even with the ignition off. It can even
switch on again later by itself~&, if
• the temperature of the engine coolant rises due to the heat
build -up from the engine in the engine compartment, or
• the engine compartment heats up because the vehicle is parked
in intense sunlight.
& WARNING
• To reduce the risk of personal injury never touch the radiator
fan .
_& WARNING (continued)
• The auxiliary electric fan is temperature controlled and can
switch on suddenly even when the engine is not running .
• The auxiliary radiator fan switches on automatically when the
engine coolant reaches a certain temperature and will continue to
run until the coolant temperature drops. •
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a quick glance.
Fig. 203 Engine
compartment: Brake
fluid reservoir
Before you check anything in the engine compartment,
always read and heed all WARNINGS:::::, & in "Working in
the engine compartment" on
page 250.
Pull the rubber strip@ up partially and lift the cover @
slightly :::::, fig. 203.
- Read the brake fluid level from the brake fluid reservoir
©. The brake fluid level must be between the "MIN" and
"MA X" markings. _..

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Windshield /headlight washer
reservoir
Fig . 206 Engine
compartment : wind­
shield washer fluid
container
The windshield and headlight washer* container is located
on the left side of the engine compartment
~ fig. 206. The
~ symbol is on the cap the of the windshield washer fluid
container.
- Before you check anything in the engine compartment,
always
read and heed all WARNINGS~ & in "Working
in the engine compartment" on
page 250.
-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 314.
To prevent lime residue from building up on the spray jets , use
dis tilled water when refilling . Always add a glass cleaner solution
(with frost protection in the winter).
(D Note
Do not use engine coolant antifreeze or any other solution that can
damage the vehicle paint. •

___ A_l-=- p _h_ a_ b_e _t_ic _ a_l _in _ d_e _x ____________________________________________ _
Where can I find the tire pressures for my y
car? ...... ... .. .... .... ....... 274
Why safety belts? ..... ........ .. 159, 160 Yellow symbols ..... .. .... .... ....... 32
Wind deflector . . . . . . . . . . . . . . . . . . . . . . 66
Cleaning .......... ... ........... 233
Installing ..... ............ ....... 67
Removing . . . . . . . . . . . . . . . . . . . . . . . . 67
Unfolding . .... ... ... .. ... ..... ... 66
Windows Cleaning ...... .... ... .... ...... . 235
Convenience close/open feature ..... 53
Defogging . . . . . . . . . . . . . . . . . . . . . . 116
Defogging as quickly as possible ... 115
Defrosting . . . . . . . . . . . . . . . . . . . . . . 116
Defros ting as quickly as possible ... 115
Windshield wipers Installing new wiper blades ....... .. 87
Int ermittent wiping . . . . . . . . . . . . . . . . 85
Low fluid level ......... .... ...... . 34
One -tap wiping . . . . . . . . . . . . . . . . . . . 85
Washer reservoir . . . . . . . . . . . . . . . . . 266
Winter operation
Battery . . . . . . . . . . . . . . . . . . . . . . . . . 261
Coolant system .................. 257
Tires ...... ............... ... ... 218
Windows . . . . . . . . . . . . . . . . . . . . . . . 235
Winter tires . . . . . . . . . . . . . . . . . . . . . . . . 284
All -wheel drive ... .. .... ...... .... 284
Wiper and washer system . . . . . . . . . . . . . 85
X
Xenon headlights . . . . . . . . . . . . . . . . 82, 302