2011 AUDI A5 CABRIOLET coolant temperature

Observe speed limits. In some areas, speeds for vehicles towing
t railers are lowe r than for regular veh icles.
Always apply brakes early. When dr iv ing downh ill, sh ift in to a lower
gear to use the engine braking effect to slow the vehicle. Use of the
brakes alone can cause them to overheat and fail.
Coolant temperature
The coolant temperature gauge~ page 8 must be observed care­
fully. If the needle moves close to the upper end of the scale, reduce
speed immediately and/or turn off the air conditione r.
If the coolant temperature warning light in the instrument cluster
star ts flashing
-t- , pull off the road, stop and let the engine idle for
about two minutes to prevent heat bu ild-up.
& WARNING
Anyone not properly restrained in a moving vehicle is at a much
greater risk in an accident. Never let anyone ride in your car who is
not properly wearing the restraints provided by Audi. u
Trailer towing tips
Important to know
------------
Your vehicle handles differently when tow ing a tra iler because of the
additiona l weight and different weight distribution. Safety, perfor ­
mance and economy will greatly depend on how carefu lly you load
your trailer and operate your rig .
Before you actua lly tow your trailer, practice turning, stopping and
backing up in an area away from traffic. Keep pract icing until you have
become completely familiar with the way your vehicle-t railer combi­
nation behaves and responds.
Controls and equip­
ment Safety first Vehicle operation
Backing up
is d iff icult and requ ires practice . Backing up with a trailer
generally requires steering action opposite to that when backing up
your vehicle without a trailer.
Maintain a greater distance between your vehicle and the one in front
of you. You will need more room to stop . To compensate fo r the
trailer, you will need a larger than norma l turning radius.
When passing, remember that you cannot accelerate as fast as you
normally would because of the added load. Make sure you have
enough room to pass. After passing, allow plenty of room for you r
trailer before changing lanes again.
Avoid jerky starts, sharp turns or rapid lane changes .
[I) Tips
• Do not tow a trai ler during the break-in per iod of your vehicle.
• If you tow a tra iler, your Audi may requi re more frequent mainte­
nance due to the extra toad~
page 343. •
Parking on a slope
Do not park on a slope with a trailer. If it cannot be
avoided, do so only after doing the following:
When parking:
-Apply the foot brake.
- Have someone place chocks under both the vehicle and the
trailer wheels.
- With chocks in place, slowly release the brakes until the
wheel chocks absorb the load.
- Turn the wheels towards the curb.
- Apply the parking brake .
- Move the se lector lever to
P.
Vehicle care Do-it-yourself service Technical data

-Checking and filling
-------=------=---------------------------------------------------
Closing the engine hood
-Pull the hood down until the pressure from the struts 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.
• Apply the parking brake.
& WARNING (continued)
• Move selector lever of automatic transmission to "P" (Park).
• 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: -First, fully apply the parking brake, move selector lever of
automatic transmission to "P" (Park). ..,

___________________________________________ C_;_ h _.:. e_c _k _ i_n -=g ~ a_n _ d_ f_i _ll _i _ n -=g '--.......J-
0 Note
• Coolan t poll utes the environment and co uld cause an engine fire.
Excess coolant w ill be forced out throug h the pressure relief valve in
t he cap w hen the eng ine becomes ho t.
• If, i n an emer gency, only water can be adde d, the correct ratio
between wate r an d an tifree ze=>
page 28 6 must be restored as soon
as possib le.
<£> For the sake of the environment
Dra ined coolant should not be reused. A lways dispose of used coolant
w hile observ ing a ll enviro nmental regula tions. •
Radiator fan
The r adia tor fan switc hes on au tomatic ally by its elf .
Th e radiator fan is dr iven by the e ngine vi a the V-bel t. Th e v iscous
clutch regu lates the speed of the fan accord ing to the temperature of
th e co olan t.
An auxiliary e lectr ic rad iator fan* sw itches on a nd off depend ing o n
coo la nt temperat ure and other vehicle ope rating conditions .
After you sw itch t he engi ne off, the a uxiliary f an can con tinue r unning
for up to 10 minutes -even w ith the ignition off . It can even switch on
a g ain lat er by itse lf=> &, if
• the temperature of the e ngine coola nt rises due to the heat build ­
up from the eng ine in the engi ne compa rtment, o r
• the engine compartment heats up because the vehicle is parked in
intense s unlight .
& WARNING
• To reduce the risk of personal injury never touch the radiator
fan.
Vehicle OP-eration
& WARNING (continued )
• The auxiliary ele ctric 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 flu id level ca n be chec ked wit h a quick gl an ce.
Fig . 224 Engi ne
c ompartm ent : Brake
fluid re se rvoir
B efo re you check anyth ing i n the e ngine compartment ,
always read and heed all WARNINGS~ & in " Workin g in
t h e e ng in e co mpartme nt" on
p age 280.
- Rea d the b rak e fl uid le ve l f ro m t he brak e fluid re serv oir
~ f ig. 224. The br ak e fl uid le vel mus t be be tw ee n the
" M IN " an d "MAX " m ar kin gs.
Th e br ake fl uid re se rvoir is loca ted at th e rear pa rt iti on of the engine
compartment on the left side=>
page 281. .,_
Vehicle care Do-it-yourselt service iTechnical data

___ C_ o_n_ s _ u_m_ e_ r_ I_ n_ f_o _r_ m_ a_ t_io _ n _____________________________________________ _
• oil changes, and
• cl eaning or re placing t he air fi lter.
W For the sake of the environment
By reg ula rly m ainta ini ng yo ur vehicl e, you h elp ma ke sure th at emis­
sion standards are ma inta ined, thus mi nimizi ng adve rse effects o n
t he environmen t.•
Important considerations for you and your
vehicle
T he i ncreasing use of e lec tronics, soph is tica ted f uel inject io n a nd
em ission cont rol systems, and the gene rally increasing tec hnica l
c o m plex ity of to d ay' s automob iles, have ste adily re duced the s cope
of ma intenance and repairs wh ich can be carr ied o ut by vehicle
ow ne rs.
Also, safety and environmental co ncerns p lace very st ric t
limits o n the nature of re pairs and adjust ments to engi ne and trans­
mission parts which an owner c an per form .
Ma int ena nce, ad justments and repairs us ually r equire sp ecial tools,
test ing devices an d other e quipme nt available to s pec ia lly trai ne d
wo rks ho p pe rsonn el in order to assure p roper perfor mance, rel i­
ability and safety of the vehicle and its many systems.
Impro per m aintenan ce, a djustments an d repair s can im pair the ope r­
ation and reliability of your vehicle and even void your vehicle
wa rranty . Therefo re, proo f of se rvicing in accordan ce wi th the ma in ­
t enance schedule may be a condi tion fo r upholding a possib le
wa rranty cla im made w it hi n the wa rra nty period .
Above all, operat io nal safety can be adversely affected, crea ting
unnecessary risks for you and your passe nge rs.
I f i n do ub t abou t any se rvi cing, have it done by you r authorized Audi
dealer or a ny other pro perly eq uipped and qualified wo rkshop . We
st rong ly ur ge yo u to give you r a uth orized Aud i dea ler the opportun ity
t o pe rfor m all scheduled mainte nance a nd necessary repairs. Yo ur dea
ler has t he facilit ies , original parts a nd trai ned spec ia lists to keep
you r vehicle ru n ning pr operly.
Performing limited maintenance yourself
The follow ing pages des cribe a lim ited nu mber of pro ce dur es which
can be perfo rmed on your vehicle wit h ord ina ry tools, s houl d the need
a ris e a nd tra ined p erson ne l b e unavailable. Before perfo rm ing any o f
these procedures, always thorough ly r ead a ll of the applicab le text
a nd caref ully follow the ins truc tion s given. A lw ays r igoro usly o bserve
t he
WARNINGS prov ided .
Before you check anything in the engine compartment, always read
and heed all WARNINGS=>
& and=> & in "W orkin g in t he engine
compartment" on
page 280.
& WARNING
• Serious personal injury may occur as a result of improperly
performed maintenance, adjustments or repairs.
• Always be extremely careful when working on the vehicle.
Always follow commonly accepted safety practices and general
common 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 vehicle, or are uncer­
tain 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
another properly equipped and qualified workshop.
• The engine compartment of any motor vehicle is a potentially
hazardous area . Never reach into the area around or touch the
radiator fan. It is temperature controlled and can switch on
suddenly -even when the engine is off and the ignition key has
been removed . The radiator fan switches on automatically when
the coolant reaches a certain temperature and will continue to run until the coolant temperature drops. _,,,