2014 AUDI A7 warning light

continue to run until the coolant temper­
ature drops.
Brake fluid
Checking brake fluid level
Fig. 197 E ngine co mpartment : cove r on the b rake fluid
r ese rvoir
Before you check anything i n the engine com­
partment,
a lw ays read and heed all W ARN ­
ING S 9 A in Working in the engine compart ­
ment on page
22 7.
~ Read the brake fluid level from the brake
fluid reservoir
9 fig . 197, 9 page 229,
fig. 193.
The brake fluid level must be be ­
tween the "MIN" and "MAX" markings .
The location of the brake fl uid reservo ir can be
seen in the engine compartment illustrat ion
9 page229.
The fluid level may drop slightly after some
time due to the automatic adj ustment of the
b rake pads. This is not cause for alarm.
I f the brake fluid level falls
considerably be­
l ow the "MIN " mark, the brake wa rning/indi­
cator ligh t
1111 (U.S. models)/ . (Canadia n
models) will come on~
page 15 . Do not con­
tinue to operate the vehicle. The comp lete
brake system shou ld be thoroughly checked
by an authorized Audi dealer or other quali­
f ied fac ility and the cau se corrected.
If the
brake fluid level is too low, the brake warning/
indicator light will illuminate . Contact an au ­
thor ized Audi dealer
imm ediat ely .
Checkin g and fillin g 237
Changing brake fluid
Have the brake fluid changed by an experi­
enced technician .
Brake fluid absorbs mois ture from the air. If
the wa ter content in the brake fluid is too
high , corrosion in the brake system may result
after a period of time . The boiling point of the
brake flu id will also dec rease considerably and
decrease braking pe rformance.
Therefore, the brake fluid must be changed
ev ery two years. Always use new brake flu id
which conforms to Federal Motor Vehicle
Standard "F MVSS 116 DOT 4 ".
The brake fluid reservo ir can be d iff icult to
reach, the refore, we recommend that you
have the brake fluid changed by your author­
i zed
Audi dealer . Your dealer has t he correct
tools, the right brake fl uid and the know-how
to do this for you.
A WARNING
-
- Brake fluid is poisonous . It must be stor­
ed only in the closed original container
out of the reach of children!
- Brake failure can resu lt from o ld or inap­
propriate brake f luid. Observe these pre­
cautions:
- Use only brake fluid that meets SAE
spec ificat ion
J 1 7 03 and conforms to
Federa l Moto r Ve hicl e Standard 116.
Always check with yo ur authorized Audi
dealer to make sure yo u are using the
correct bra ke fluid. The correct type of
brake f luid is also indicated on the
brake fluid reservoir.
- The brake fluid must be new. Heavy use
of the brakes can cause a vapor lock if
the brake fluid is left in the system too
l ong . This can seriously affect the effi ­
c iency of the brakes as well as your
safety. Th is cou ld resu lt in an accident .
(D Note
Brake fluid will damage the paint of your
vehicle .
.

238 Checking and filling
@ For the sake of the environment
Because of the problem of proper disposal
of brake fluid as we ll as the special tools
required and the necessary expertise, we recommend that you have the brake fluid
changed by your author ized Audi dealer.
Battery
General information
Under normal operating conditions, the bat­
tery in your Audi does not need any mainte­
nance. With
high outside temperatures or
long daily drives we recommend that you have
the electro lyte level checked by a service fa­
cility . The electrolyte level should also be
checked each time the battery is charged
<=:> page 240.
Have the battery checked when you take your
vehicle in for service . You are well adv ised to
replace a battery that is older than 5 years .
With certain types of airbag deployment, the battery is disconnected from the vehicle elec­
tr ical system for safety reasons
c::> & in Re­
pair, care and disposal of the airbags on
page 165.
Disconnecting the battery terminals
Some vehicle functions (power window regu­
lators, for example) are lost if the battery ter­
minals are disconnected. These functions have
to be relearned after the battery terminals are
connected again. To prevent this , the battery
should only be disconnected from the vehicle
e lectrica l system when absolutely necessary
for repairs.
Vehicles not driven for long periods
If you do not drive your vehicle over a period
of severa l days or weeks, electrical compo­
nents are gradually cut back or switched off.
This reduces energy consumption and main­
tains starting capability over a longer period
c::> page 202. Some of the convenience func­
tions may not operate, such as the interior
lights or power seat adjustment. The conven- ience
functions will be available again when
you switch on the ignition and start the en­ gine.
Winter operation
During the winter months, battery capac ity
tends to decrease as temperatures drop. This
is because more power is a lso consumed whi le
starting, and the headlights, rear window de­
fogger, etc., are used more often.
Avoid unnecessary power consumption, par­
ticularly in city traffic or when traveling only
short distances. Let your authorized Audi
deale r check the capacity of the vehicle bat ­
tery before winter sets in
c::> page 240 . A well
charged battery will no t only prevent star ting
problems when the weather is cold, but will
also last longer .
@ Tips
If your vehicle is left standing for several
weeks at extremely low temperatures, the
vehicle battery should be removed and
stored where it w ill not freeze. This will
prevent it from be ing damaged and having
to be replaced .
Working on the battery
Be especially careful when working on or near
the battery.
The battery is located in the luggage compart­
ment under the floor . Before you check any­
thing in the luggage compartment,
read and
heed all WARNINGS
c::> .&,.
Always heed the safety warnings , when work­
ing on the vehicle battery or the vehicle elec­
trical system to prevent injury.
The following WARNINGS are very
important when working on the battery:
Always heed the following WARNING SYM-
BOLS and safety precautions when working
on the battery.
®
Always wear eye protection.

&
Batt ery acid contain s sulfuric acid.
Alw ay s w ea r g lov es and eye protec -
t io n.
@
No
-spa rk s
- flam es
- sm oking .
~
When a b atte ry is ch arged , it p rodu -
ce s hy d roge n ga s wh ich i s exp losi ve
a nd could cause pe rso nal injur y.
®
Alw ay s keep the b atter y well out of
rea ch of children.
A WARNING
Whenever working on the battery or on
the electrical system, there is the r isk of
injury, acc ident and even fire. Read and
heed the following WARNINGS:
- Always wear eye protection. Do not let
battery acid or any lead particles get on
yo ur sk in or cloth ing . Sh ield your eyes.
Explosive gases can cause blindness or
other injury.
- Battery acid contains sulfuric acid . Sulfu­
ric acid can cause blindness and severe
burns.
- Always wear gloves and eye p rotection.
Do not tilt the battery because ac id
could leak out of the vent ilation open­
ings.
- If you get battery acid in your eyes or
on your sk in, immed iately r inse with
cold water for severa l m inutes and get
medical attention .
- If you should ingest any battery acid,
seek med ical attention immediately.
- Do not expose the battery to an open
flame, electric sparks or an open light.
- Do not smoke.
- Do not interchange the positive and neg-
ative cab les.
- When working on the battery, be sure
not to short-c ircuit the terminals with
tools or other metal objects. This would cause the battery to heat up very quickly,
wh ich could lead to damage or explosion
and personal in jury.
Checkin g and fillin g
-When a battery is charged, it produces
hydrogen gas which is explos ive and
could cause personal injury.
- Always keep the battery well out of the
reach of children.
- Before work is done on the elect rical sys­
tem, disconnect the negative ground ca­ ble.
- Before performing any work on the e lec­
trical system, switch off the eng ine and
ignit ion as well as any electrical equip­
ment . The negative cable on the battery
must be disconnected. If yo u are just go­
ing to replace a light bulb, then it is
enough to switc h off the lights.
- Before disconnecting the battery, switch
off the anti-theft alarm system! Other­
wise you wi ll set off the alarm.
- When disconnecting the battery, first
disconnect the negat ive cab le and then
the posit ive cab le.
- Before reconnecting the batte ry, ma ke
sure all e lectr ica l consumers are sw itch ­
ed off . Reconnect the pos it ive cable first
and then the negative cable. Neve r inter ­
change the cables - this could start a fire!
- Never cha rge a frozen or a thawed-out
battery.
It could exp lode! If a battery has
frozen, then it must be replaced . A dis­
charged battery can freeze over at 32
°F
(0 oc).
- Make sure the vent hose is always attach­
ed to the opening on the side of the bat­
tery.
- Never use batteries which are damaged.
There is the danger of an explosion! A l­
ways rep lace a damaged battery.
A WARNING
Ca lifornia Proposition 65 Warning:
- Battery posts, terminals and related ac­
cessories conta in lead and lead com­
pounds, chemicals known to the State of
Ca lifornia to cause cance r and reproduc­
tive problems. Wash hands after han- dling.
~
239
•
•

250 Tire s and wheel s
used today are underinflated just by looking
at them.
Therefore, be sure to check tire pressures at least once a month and always before going
on a long tr ip. Make sure to take the number
of people and the amount of luggage into ac­
count when adjusting tire pressure for a trip -
even one that you would not consider to be
"long." See
c> page 251, Tires and vehicle
load limits
for more important information .
Always use an accurate tire pressure gauge
when checking and adjusting inflation pres­
sures . Check all of the t ires and be sure not to
forget the spare tire . If the pressure in any tire
i s too high when the tire is "cold," let air out
of the tire slowly with the edge of the tire
gauge and keep checking the pressure unt il
you reach the pressu re that is correct for the
l oad (passengers and luggage) and kind of
driving you plan to do.
I f the p ress ure in any tire is too low, note the
d ifference between the pressure in the cold
tire and the pressure you need and add the a ir
that you need to reach the correct pressure for
the vehicle load (passengers and luggage) for
the tires on your veh icle as listed on the on
you r veh icle and in this manual and the k ind
of dr iving you plan to do.
Ne ver e xceed the m aximum inflation pre s­
su re li sted on the ti re sidewall for an y rea ­
son.
Remember that the vehicle manufacturer, not
the tire manufacturer, determines the correct
tire p ressure fo r the t ires on your vehicle .
It is important to check the tire pressu re when
the tires are cold.
- Read the requ ired t ire p ress ure from the tire
pressure label. The ti re pressu re labe l is lo ­
cated on the drive r's side 8-pi llar.
- T urn the valve stem cap counter- clockwise
to remove i t from the tire valve.
- Place the air pressu re gauge on the valve .
- The tire pressures should only be checked
and adjusted when the tires a re cold . The slightly raised pressures of warm tires must
not be reduced.
- Adjust the tire pressure to the load you are
carrying.
- Reins tall the valve stem cap on the va lve.
When sh ould I check the tire pressure?
The correct tire pressure is especially impor­
tant at h igh speeds. The pressure should
the refore be checked at least once a mo nth
and always before starting a jo urney. Do not
f orget to c heck the ti re p ress ure fo r the spare
whee l
i=;,poge 265.
When should I adjust the tire pressures?
Adjust the tire pressure to the load you are
ca rrying. After changing a whee l
or replaci ng
whee ls yo u have to adj ust the ti re press ures
on all whee ls. In addition, you m ust then
store the new tire pressures in the tire pres­
s u re monito ring system*
c> page 261.
A WARNING ~
Incorrect tire pressures and/or underinfla-
tion can lead sudden tire fa ilure, loss of
control, collision, serious personal injury
or even death.
- When the warn ing symbol
RI] appears in
the instrument cluster, stop and inspect
the t ires.
- Incorrect tire pressure and/or underinfla­
tion can cause increased tire wear and can affect the handling of the vehicle and
stopping ability .
- Inco rrect tire pressures and/or underin­
flation can a lso lead to sudden t ire fail­
ure, including a blowou t and sudden de­
flation, ca us ing loss of veh icle cont ro l.
- The drive r is responsible for the co rrect
tire pressures for all tires on the veh icle.
T he applicable pressure values are loca t­
ed on a sticke r on the dr iver's s ide 8-pil­
lar .
- On ly when all tires on the vehicle are fil­
led to the correct pressu re, the t ire pres ­
sure monitoring* system can work cor­ rectly.

262 Tires and wheels
remain continuously illuminated. This se­
quence will continue upon subsequent vehicle
start-ups as long as the malfunction exists.
When the malfunction indicator is ill uminat­
ed, the system may not be able to detect or
signal low tire pressure as intended . TPMS
malfunctions may occur for a variety of rea­
sons , including the installat ion of replace­
ment or alternate tires or wheels on the vehi­
cle that prevent the TPMS from funct ioning
properly . Always check the TPMS malfunction
tellta le after replacing one or more t ires or
wheels on your veh icle to ensure that the re­
placement or alternate tires and wheels allow
the TPMS to continue to function properly.
Tire pressure indicator appears
Applies to vehicles: with tire pressure monitoring system
The tire pressure indi cator in the instrument
cluster informs you if the tire pressure is too
low or if there is a system malfunction.
Fig. 205 Display: underi nflatio n warn ing
Fig. 206 Display: System mal functio n
Using the ABS sensors, the tire pressure moni­
toring system compares the t ire tread circum­
ference and vibration characteris tics of the in­
dividual tires. If the pressure decreases in one
or more tires, this is indicated in the i nstru- ment
cluster with a warning symbol
RE and a
message
c:> fig. 205 .
The tire pressure monitoring system must be
reset via MMI each time the p ress ures are ad­
justed (e.g . when switching between partial
and full load pressure) or after changing or re­
plac ing a tire on your vehicle
c:> page 263 . The
TPMS indicator only monitors the tire pres­
sure that you have previously stored. You can
find the recommended tire pressures for your
vehicle on the Label on dr iver's side 8-pillar
<=:>page 247 .
Tire tread circumference and vibrat ion charac­
teristics can change and cause a tire pressure
wa rning if:
- the t ire pressure in one or more tires is too
low,
- the tire has structural damage,
- the tire pressure was changed, wheels rotat -
ed or replaced but the TPMS was not reset
<=:> page 263.
Warning symbols
RE Lo ss of pressure in at least one tire c:> .&..
Check the tire or tires and replace or repair if
necessary. The indicator light
RE in the instru­
ment cluster also illuminates
c:> page 12 .
Check/correct the pressures of all four tires
and reset TPMS via MMI.
film (T ire Pressure Monitor ing System) Tire
pressure! System malfunction .
If film appears after switching the ignition on
or while dr iving
c:> fig. 206 and the indicator
light
[ti] in the instrument cluster blinks for
approximately one minute and then stays on,
there is a system malfunction .
Attempt to store the correct tire pressu re
<=:> page 263 . If the indicator light does not
turn off or if it turns on shortly thereafter, im­
mediately drive your vehicle to an author ized
Audi dealer or authorized repair facility to
have the malfunct ion corrected .

266 What do I do now?
Changing a wheel
Before changing a wheel
Observe the following precautions for your
own and your passenger's safety when chang ­
ing a wheel .
... After you experience a tire failure, pull the
car well away from moving traffic and try to
reach
level ground before you stop o ,&.
... All passengers should leave the car and
move to a safe location (for instance, behind
the guardrail)
o A-
.. Engage the parking brake to prevent your
vehicle from rolling unintentionally
o ,&.
... Move selector lever to position Po ,& .
• If you are towing a trailer, unhitch the trailer
from your vehicle .
... Take the
jack and the spare tire out of the
luggage compartment
o page 264,
o page265.
A WARNING
You or your passengers could be injured
while changing a wheel if you do not fol­
low these safety precautions:
- If you have a flat tire,
move a safe dis­
tance off the road. Turn off the engine,
turn the emergency flashers on and use
other warning devices to alert other mo­
torists.
- Make sure that passengers wait in a safe
place away from the vehicle and well
away from the road and traffic.
- To help prevent the vehicle from moving
sudden ly and possibly slipping off the
jack, always fully set the parking brake
and block the wheel diagonally opposite
the wheel being changed . When one
front wheel is lifted off the ground, plac­
ing the Automatic Transmission in P
(Park) will
not prevent the vehicle from
moving.
- Before you change a wheel, be sure the
ground is level and firm.
If necessary,
use a sturdy board under the jack.
-
-Always store the vehicle tool kit, the jack
and the replaced tire in the luggage com­
partment
opage 136.
@ Tips
Before changing the whee l, you must acti­
vate the jacking mode, so that the auto­
matic controls for the Adaptive Air Sus­
pension* do not make it more difficult to
lift the vehicle with the jack
o page 268 .
Changing a wheel
When you change a wheel, follow these­
quence described below step-by-step and in
exactly that order.
l. Activate the vehicle jack mode*
opage 268 .
2. Remove the decorative wheel cover* . For
more details see also
o page 267, Deco­
rative wheel covers
or o page 267,
Wheels with wheel bolt caps.
3. Loosen the wheel bolts o page 268.
4. Locate the proper mounting point for the
jack and align the jack below that point
opage 268.
5. Raise the car with the jack o page 268.
6. Remove the wheel with the flat tire and
then install
the spare opage 270.
7. Tighten all wheel bolts lightly .
8.
Lower the vehicle with the jack .
9 . Use the wheel bolt w rench and
firmly
tighten all wheel bolts o page 268.
10. Replace the decorative wheel cover*.
11. Deactivate the vehicle jack mode * in the
MMI:
I CARI function button > (Ca r)* sys­
tems
control button > Servicing & checks
> Air susp.: jack mode > Off.
The vehicle jack mode* switches off automati­
ca lly at speeds above 6 mph (10 km/h) .
A WARNING ,-
Always read and follow all WARNINGS and
in format ion
o .&. in Raising the vehicle on
page 269
and opage 271.

No. Equipment Amps
5 Parking system 5
6 Rear Seat Entertainment 5
7 Start-Stop-System 5
8 side ass ist 5
9
Gateway, Vehicle electrical sys-
5 tern control module 1
10 Sport differential
5
Fuse panel © (black)
No. Equipment
Amps
1 Not used
Fuse panel ® (black)
No. Equipment
Amps
1 Movement-activated luggage 1
compartment lid opening
Bulbs
Replacing light bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace burned
out bulbs for you.
It is becoming increasingly more and more
difficult to replace vehicle light bulbs since in
many cases, other parts of the car must first
be removed before you are able to get to the
bulb. This appl ies especially to the light bulbs
in the front of your car which you can only
reach through the engine compartment .
Sheet metal and bulb ho lders can have sharp
edges that can cause ser ious cuts, and parts
must be correctly taken apart and then prop­
erly put back together to help prevent break­
age of parts and long term damage from wa­
ter that can enter housings that have not been properly resealed.
F or your safety, we recommend that you have
your authorized Audi dealer replace any bulbs for you, since your dealer has the proper tools,
the correct bu lbs and the expertise .
Gas discharge lamps (Xenon lights):
Fuses and bulbs
Due to the high e lectr ica l voltage, have the
bulbs replaced by a qualified technician.
Head lights w ith Xenon light can be identified
by the high voltage sticker.
LED headlights* require no maintenance.
Please contact your authorized Audi dealer if a
bulb needs to be replaced.
_& WARNING
Contact with high-voltage components of
the electrical system and improper re­
placement of gas discharge (Xenon) head­
light bulbs can cause ser ious personal in­
jury and death .
- Xenon bulbs are pressur ized and can ex­
plode when being changed .
- Changing Xenon lamps requ ires the spe­
cial tra ining, instructions and equip­
ment.
- Only an authorized Audi dealer or other
qualified workshop should change the
bulbs in gas discharge lamps.
&_ WARNING
There are parts with sharp edges on the
openings and on the bulb holders that can
cause serious cuts.
- If you are uncertain about what to do,
have the work performed by an author­
ized Audi dealer or other qualified work­
shop . Serious personal injury may result
from improperly performed work.
(D Tips
-If you still prefer to replace the light
bulbs yourself, be aware that the engine
compartment is a hazardous area to
work in
¢page 227¢ &.
- It is best to ask your authorized Audi
dealer whenever yo u need to change a
bulb .
275
•
•

2 76 Emergency situations
Emergency situations
General
This chapter is intended for trained emer­
gency crews and working personnel who
have the necessary tools and equipment to
perform these ope rations.
Starting by pushing or
towing
Q;) Note
Vehicles w ith an automatic transmission
cannot be started by pus hing o r tow ing.
Starting with jumper
cables
If necessary, the engine can be started by
connecting it to the battery of another vehi­
cle.
If the engine should fail to start because of a
discharged or weak battery, the battery can be
connected to the battery of
another vehicle,
using a
pair of jumpe r cables to start the en­
g ine .
Jumper cables
Use only jumper cables of sufficiently large
cross section to carry the starter current safe­
ly. Refer to the manufacturer's specif ications.
Use only jumper cables with
insulated termi­
na l clamps which are distinctly marked:
plus(+) cable in most cases colored red
minu s(-) cable
in most cases colored black .
A WARNING
Batteries contain electricity, acid, and gas.
Any of these can cause very serious or fatal
inju ry. Follow the instructions below for
safe handling of your veh icle's battery.
- Always shield you r eyes and avoid lean­
ing over the battery whenever possible.
- A discharged battery can freeze at tem­
peratures just be low 32 °F (0 °C). Before connecting a
jumper cable, you must
thaw the frozen battery complete ly, oth­
erwise it could explode.
- Do not allow battery acid 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 explosive gas­
es. Keep sparks, flame and lighted ciga­
rettes away from batteries.
- Do not try to jump start any vehicle with a low acid level in the battery.
- The vo ltage of the booster battery must
also have a 12-volt rating. The capacity
(Ah) of the booster battery should not be
lower than that of the discharged bat­
tery . Use of batteries of d ifferent voltage
or substantially different "Ah" rating
may cause an exp losion and personal in­
jury.
- Never charge a frozen batte ry. Gas trap­
ped 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 batter ies of different voltage or
substantially different capacity (Ah) rat­
ing may cause an exp losion and injury.
The capacity (Ah) of the booster battery
should not be lower than that of the dis ­
charged battery.
- Before you check anything in the engine
compartment, always read and heed a ll
WARNINGS¢
page 22 7.
(D Note
- App lying a higher voltage booster bat­
tery will cause expensive damage to sen­
sitive electronic components, such as
contro l units, relays, radio, etc .
- Th ere must be no electrical contact be­
tween the vehicles as otherwise current cou ld already start to f low as soon as the
positive(+) terminals are connected. .,.