cooling AUDI S7 2014 User Guide

210 Trailer towing
Make sure that the cooling system has eno ugh
fluid .
Tire p res sure
When tow ing a trai le r, inflate the t ires of your
vehi cle to the co ld tire pressure listed under
"Full load" on the label located on the driver's
side B-pillar (visible when the door is open) .
Inflate trailer t ires to trai ler and tire manufac­
turers' specifications.
Lights
Chec k to make s ure both veh icle and trailer
lights are working properly.
Safety chains
Be sure tra iler safety cha ins are properly con­
nected from the trailer to the hitch on the ve­
h icle. Leave enough slack in the chains to per ­
mit turn ing corners . When you install safety
cha ins, make su re they wi ll not drag on the
road when yo u are driving.
The chains shou ld cross under the tra iler
tongue to prevent it from dropping in case of
separation from the hitch.
Adjusting the Audi drive select
Make sure the vehicle is on a level su rface be­
for e
hitching up the tra ile r and b efor e adjust­
ing the tongue weight. The vehicle must be in
auto or comfort dr iving mode and no t raised
qpage 102, q(D _
Make sure that the vehicle is lowered. In Info­
tainment , se lect:
ICARI f u nction button> Low­
e r
control b utton .
I f you m ust dr ive under poor road co ndit ions,
you can raise the veh icle
aft er coup ling the
tra iler or
after adjusting the tong ue weig ht
q page 104.
-Changes in tempe ratu re or load can af­
fect the heig ht of the veh icle.
- Always se lect
auto or comfort mode.
Otherwise, the tongue load spec ified for
your vehicle will no longer be applicable.
Driving instructions
Driving with a trailer always requires extra
care and consideration .
To obtain the best possible handling of vehicle
and trailer, please note the fo llow ing:
.,. Do not tow a loaded t railer when yo ur car it­
self is not loaded.
.,. Be especially careful when passing other
veh icles.
.,. Observe speed limits .
.,. Do not dr ive at the max imum permissib le
speed.
.,. Always app ly brakes early .
.,. Mon itor the tempe ratu re ga uge.
Weight distribut ion
T owing a loaded trailer with an empty car re­
su lts in a highly unstable distribution of
we ight. If this cannot be avoided, drive at very
low speeds on ly to avoid t he risk of losing
steering con tro l.
A "ba lanced " rig is easier to ope rate and con­
t ro l. This means that the tow vehicle should
be loaded to the extent possible and permissi­
ble , while keep ing the trai ler as light as possi ­
ble under the c ircumstances . Whenever poss i­
ble , transfer some cargo to the luggage com ­
partment of the tow veh icle while observing
tong ue load requirements and vehicle load ing
considerations.
Speed
The higher the speed, the more difficu lt it be ­
comes for the driver to control the rig . Do not
drive at the maximum permissib le speed. Re­
duce your speed even more if load, weather or
wind conditions are unfavorable -particularly
whe n going downhill.
Red uce veh icle speed
immediately if the trail­
er shows the slightest s ign of sway ing .
Do not
try to stop the s way ing b y accele rating .
Observe speed limits . In some a reas, speeds
for vehicles tow ing tra ilers are lower than for
regular veh icles . .,.

current list of oils (manufacturers, brand
names etc.) that conform to Audi oil standard
VW 502 00 (vehicles with gasoline engine) or
VW 507 00 (vehicles with diesel engine).
C hanging the engine oil
The engine oil and oil filter must be changed
according to the mileage (kilomete rs) and
time intervals specified in your vehicle's War­
ranty
& Maintenance booklet. Do not exceed
these intervals -harmful deposits from old
engine oil can reduce engine performance and
can lead to expensive engine repairs .
Changing the oil at the recommended inter­
vals is so very important because the lubricat­
ing properties of oil decrease gradually during
normal vehicle use. If you are not sure when
you have your oil changed, ask your author­
ized Audi Service Advisor .
Under some circumstances the engine oil
should even be changed more frequently .
Change oil more often if you drive mostly
short distances, operate the vehicle in dusty
areas or mostly under stop-and-go traffic con­
ditions, or when you use your vehicle where
temperatures stay below freezing point for long periods.
Detergent addit ives in the oil will make fresh
oil look dark after the eng ine has been run­
ning for a short time. This is normal and is not
a reason to change the oil more often than
recommended.
Damage or malfunctions due to lack of
maintenance
It is essential that you change your oil at the
recommended intervals using only engine oil
that complies with Audi oil standard
VW 502 00 (vehicles with gasoline engine) or
VW 507 00 (vehicles with diesel engine). Your
Limited New Vehicle Warranty does not cover
damage or malfunctions due to failure to fol­
low recommended maintenance and use re­
quirements as set forth in the Audi Owner's
Manual and Warranty
& Maintenance booklet.
Your dealer will have to deny warranty cover­
age unless you present to the dealer proof in
Checking and filling 231
the form of Service or Repair Orders that all
scheduled maintenance was performed in a
timely manner.
Engine oil consumption
The engine in your vehicle depends on an ade­
quate amount of oil to lubricate and cool all
of its moving parts.
In order to provide effective lubrication and
cooling of internal engine components, all in­
ternal combustion engines consume a certain
amount of oil. Oil consumption varies from engine to engine and may change significantly
over the life of the engine. Typically, engines
with a specified break-in period (see ¢
page 204) consume more oil during the
break-in period than they consume after oil
consumption has stabilized.
Under normal conditions, the rate of oil con­
sumption depends on the quality and viscosity
of the oil , the RPM (revolutions per minute) at
which the engine is operated, the ambient
temperature and road conditions . Further fac­
tors are the amount of oil dilution from water
condensation or fuel residue and the oxida­
tion level of the oil. As any engine is subject to
wear as mileage builds up, the oil consump­
tion may increase over time until replacement
of worn components may become necessary .
With all these variables coming into play, no
standard rate of oil consumption can be es­
tablished or specified. There is no alternative
to regular and frequent checking of the oil lev­
el, see
Note .
If the yellow engine oil level warning symbol
in the instrument cluster
II! lights up, you
should check the oil level as soon as possible
¢
page 232. Top off the oil at your earliest
convenience
9 page 232.
.&, WARNING
Before you check anything in the engine
compartment, always read and heed all
WARNINGS ¢.&.
in Working in the engine
comportment on page 22
7.
-
•
•

234 Check ing and filling
@ For the sake of the environment
- Before changing your oil , first make sure
you know where you can properly dispose
of the used o il.
- Always dispose of used engine oil proper­
l y. Do not dump it on garden soi l, wood­
ed areas, into open streams or down
sewage dra ins.
- Recycle used engine oil by taking it to a
used engine oil collection facility in your
area, or contact a service station .
Engine cooling system
Coolant
The engine coolant performs two functions: it
keeps the engine from overheating and it pro­ tects the engine from freezing in the winter.
The cooling system is sea led and generally re­
q uir es little attention .
The cooling system has been filled at the fac ­
tory with a pe rmanent coolant which does not
need to be c hanged. The coolant consists of a
mixture of spec ia lly conditioned water and the
manufacturer 's glyco l-b ased coo lant add i-
tive G l3 antifreeze with ant icorrosion addi ­
tives (50% for USA models ; 60% for Canadian
mod els). This mixture both assures the nec es­
sary frost protection and protects metal com­ ponents in the engine's cooling sys tem from
corrosion and scaling . It a lso raises the boil­
ing point of the coolant .
Do not red uce the concentration o f the coo l­
ant in the summer by adding plain water.
The
proportion of coolant add itive mu st be at
l e a st 50 % but not more than 60 %
to main­
tain antifreez e protection and cooling efficien­
cy . If the coolant frost prote ct ion is too low,
the coo lant cou ld freeze and damage the veh i­
cle hea ting and eng ine cooling system.
For yea r-round d riving, antifreeze is added at
the fac to ry for temperatures down to:
-- 31°F( -35°C)USA
- -40 °F ( -40 °C) Canada. If
you must add coolant, use a mixture o f wa ­
ter and coolant additive . Mixing the coo lant
additive with distilled water is recommended.
A WARNING
-
Before you c heck anything in the engine
compartment, always read and heed a ll
WAR NINGS
c::, & in Working in the engine
compartment on page 22
7 .
(D Note
- Before winter sets in, have the coo lant
checked to see if the coolant additive in
your vehicle is sufficient to meet the cli­ mate conditions . This is especia lly impor­
tan t if you live in a reg io n where the win­
t er is ex treme ly cold. If ne cessa ry, i n­
crease the pr opo rtion of coo lant add itive
t o 60%.
- Whe n adding coolant additive to yo ur
c oolin g sys tem, remembe r:
- We recommend using on ly coolant ad ­
d itive Gl2++ or Gl3 (check the label)
for your vehicle . This coolant additive is
ava ila ble at autho rized Aud i deale rs.
Other types of antifreeze ca n sig nifi­
ca ntly reduce co rr os io n protection. The
r es ult ing co rrosion c an c ause a los s o f
coolant and serious engine damage.
- Do not add any type of rad iator leak seal­
a n t to y our vehicle 's engine coolant.
Add ing radiator repai r fl uid may adverse ­
ly affect the function and performance of
your cooling system and co uld resu lt in
damage not covered by yo ur New Vehicle
Limited Warranty.
-

Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 196 Eng ine compartment: cover on the coolant
expansion tank
Before you check anything in the engine com­
partment,
alwa ys read and hee d all W ARN­
ING S ¢.&. in Working in the engine compart­
ment on page 22
7 .
.,. Park your vehicle on a level surface.
.,. Switch off the ignit ion.
.,. Read the engine coolant level from the cool­
ant expansion tank¢
fig. 196, ¢ page 229 ,
fig. 193 .
With a cold engine, the coolant
level should be between the "min" and
"max" mar kings. When the engine is warm,
the leve l may be slightly above the "max"
marking.
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration¢
page 229 .
To obtain an accurate read ing, the eng ine
must be switched off.
The expans ion tank in you r vehicle is equipped
with an electric coolant level sensor .
When the coolant level is too low, the warning
light in the Auto -Check System ¢
page 17 will
illum inate u ntil you add coolant a nd the level
has been restored to normal. Even though
there is an electric coolant level sensor, we
still recommend you check the coolan t leve l
from time to time.
Coolant loss
Coolant loss may indicate a leak in the cool ing
system. In the event of coolant loss, the cool-
Checkin g and fillin g 235
ing system should be inspected immediately
by your authorized Audi dealer . It is not
enough merely to add coolant.
In a
s ea led system, losses can occur on ly if
the boiling point of the coo lant is exceeded as
a result of overheating.
A WARNING
The cooling system is under pressure and
can get very hot. Reduce the risk of scald­
ing from hot coolant by follow ing these
steps.
- Turn off the engine and allow it to cool
down.
- Protect your face, hands and arms from
escap ing f lu id and steam by cover ing the
cap with a la rge, th ick rag.
- Turn the cap slowly and very carefully in
a counter-clockwise d irect ion while ap­
plyi ng light, downward pressure on the
top of the cap .
- To avo id being burned, do not sp ill anti­
freeze or coolant on the exhaust system
or hot engine parts. Under certa in cond i­
tions, the ethylene gly col in engine coo l­
a nt can catch fire.
(D Note
Do not add any type of radiator leak sea L­
ant to your veh icle's engine coo lant . Add­
i ng radiato r repa ir flui d may adverse ly af­
fect the funct io n and performa nce o f your
cooling system and could result in damage
not covered by your New Vehicle Limited
War ranty.
Adding coolant
Be very careful when adding engine coolant .
Before you che ck anyth ing in the eng ine com­
partmen t,
alway s read and heed all WARN­
INGS ¢.&_ in Working in the engine compart­
ment on page
227 .
.,. Tur n off the engi ne.
.,. Let the engine cool down.

29 2 Index
Certification ...... ..... ... .. .. .... . 288
Changing a wheel .............. .. ... 266
Changing engine oi l ........ .. .. .. .. . 233
Chec king
Engine coolant leve l .... ... .. .. .... . 235
Tire pressure ... .. ..... ... .. .. .... . 249
Ch ild restra ints
Da nger of us ing ch ild restra ints in the
front seat . . . . . . . . . . . . . . . . . . . . . . . . 151
Where can I get additional information
about child restraints and their use? .. 193
Ch ild restra int system anchors ... ..... 189
Ch ild safety .. ..... ........ .. .. .... . 175
Convertible locking retractor . . . . . . . . . 186
Important safety instructions for using
ch ild safety seats ........... .. .. .. . 179
I mportant th ings to know when dr iving
with ch ildren . ............. .. .... . 175
Tether anchors .................... 192
Tether straps .. ... ...... ... .. .... . 192
Ch ild safety lock
Rear doors . .............. ... .. .... 40
Child safety seats .............. .... . 181
Boo ster se ats . . . . . . . . . . . . . . . . . . . . . 184
Convertible child seats ............. 182
Conve rtible locking retractor ......... 186
H ow do I properly install a child safety
seat in my vehicle? ...... .. .. .. .. .. . 179
I nfant sea ts ............. .. .. .. .. . 181
I nstall ing .... ............. ...... . 186
I nstalling a child restraint using the
L ATCH system .. .. ..... ... .. .. .... . 191
LATCH system ... .. .... ... .. .. .. .. . 19 1
Lower anchorages ............ .... . 190
Mount ing and releasing the anchorage
hook .. .. .. ... .... ...... ... ... .. . 191
Safety instructions . . . . . . . . . . . . . . . . . 179
Unused safety belts on the rear seat .. 181
C igarette lighter . . . . . . . . . . . . . . . . . . . . . 59
C le a ning .. .. .. . .......... .. .. .. .. . 213
Climate control Air vents ... ... .... ...... ... ... .. .. 71
Climate controls . . . . . . . . . . . . . . . . . . . . . 69
C limate con trol system
Supp lementary hea ter ... .. .. .. .... . . 74
Climate control (four-zone)
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 72 Climate control (three
-zone)
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 70
Clock .............................. 28
Closing Rear lid ........................... 38
Sl id ing/tilting sunroof ............. .. 42
Co ld tire inflation pressure ..... ... .. .. 247
Coming home ... .. ............. .... . 46
Compact spare tire .............. .... 265
Compartments . . . . . . . . . . . . . . . . . . . . . . 60
Compliance . . . . . . . . . . . . . . . . . . . . . . . . 288
Consumer Information . . . . . . . . . . 138, 285
Consumption (fuel) ... .......... .. .. . 25
Co ntacting NHTSA . ................ . 138
Controls Cleaning . ..... .. .. ... ..... ... .. .. 215
Co nvenience key . . . . . . . . . . . . . . . . . . . . . 36
Star ting the engine ............ .. .. . 76
Stopping the eng ine (START ENG IN E
STOP button) . . . . . . . . . . . . . . . . . . . . . . 77
Switching the ignition on .... ... .. .. . 76
Un locking and locking vehicle ......... 36
Converti ble child sa fe ty seats ..... .... 182
Co nvertib le locking retractor
Activati ng .... .... ............... . 188
Deact ivat ing . .. .. .......... ...... . 188
U si ng to secu re a child safety seat 1.86, 188
Coolant
refer to Engine coolant ............ . 234
Cooling mode (automatic climate control) 72
Cooling mode (climate control) ......... 70
Cruise contro l
Changi ng speed .. .. ... ....... ... .. . 85
Presett ing your speed ............... 85
Switching off .. .................... 85
Switch ing on . .. .. ... .......... .. .. . 84
Warning/ind icator lights ........ .. .. . 24
(upholder .. .. ... . .. .... .... ... .. .. . 60
C u rve light . ..... .. ... .. ..... .... . .. 102
Cylinder on demand System ........... 27
D
Data recorder ... ................... 196
Date disp lay . ..... .. .... .... ... .. .. . 28
Daytime run ning lights ........... .. .. . 44

302 Index
Windshield
C leaning ... ... . ...... ... .. .. .... .. 48
defrost ing (automatic climate cont ro l) . 73
defrost ing (climate control) . . . . . . . . . . 71
W indshield w ashe r system .. .. .. .... .. 48
Washer fluid leve l . . . . . . . . . . . . . . . . . . 22
Washer rese rvoir . ..... ... .. .. .... . 241
W indshield w ipe rs
C leaning ..... ........... .... .... .. 49
F o ld ing up ............ .. .... .. .. .. 49
I ndicator light . . . . . . . . . . . . . . . . . . . . . 22
Rep lacing windshie ld wiper blades ... . . 49
Switching on/off . ..... ... .. .. .... .. 48
W inte r oper ation
B at tery ...... ........... ........ . 238
Ca r washes .... . ...... ... .. .. .... . 213
Cooling system . .. ..... ... .. .. .... . 234
Defrosting windows (a utomatic cl imate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Defrosting windows (climate contro l) . . 71
Remov ing ice from windows .. .. .... . 215
Seat hea ting (automatic clima te control) 73
Seat heating (cl imate control) . . . . . . . . 7 1
St eer ing whee l heating .... .. .. .. .. . . 74
T ires .. .. .. ............. .. .. .. .. . 201
W inte r tires ... ... .... ..... .. .. .. .. . 258
All-w heel drive .......... ... .. .. ... 258
X
Xenon-Lig hts . . . . . . . . . . . . . . . . . . . 44, 2 7 5