2016 AUDI A7 overheating

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@ Tips
For additional information on the diesel par­
ticulate fi lter, refer to ¢
page 198.
!?) Engine speed limitation
App lies to vehicles: with e ngin e speed limitat ion
Ill Engine speed maximum XXXX RPM
The engine speed is automatically limited to the
speed displayed in the instrument cluster. This
protects the eng ine from overheating.
The engine speed limitation deactivates once the
engine is no longer in the critical temperature
range and you have released the accelerator ped­
al.
If the engine speed limitation was activated by
an engine control malfunction, the
Im indicator
light also turns on. Make sure that the speed
does not go above the speed d isplayed. Drive to
an authorized Audi dealer or authorized Audi
Service Facility immediately to have the malfunc­
tion corrected .
.., Engine oil sensor
• Oil level! Sensor defective
If the symbol illuminates, contact your author­
ized Audi dealer and have the oil sensor inspect ­
ed. Until you have th is done, check the oil level
each time you refuel just to be on the safe side
¢page 222.
f Engine warm-up request
n Please warm up engine
Fuel has entered the engine oil, either from low
outside temperatures or frequent short d rives.
Drive until the engine is warm so that the fuel in
the eng ine oi l wi ll evaporate. Avoid high eng ine
speeds, full accelerating and heavy engine loads
when doing this .
Bil Fuel tank system
Ii] Please refuel
Instruments and indicator lights
If the indicator light turns on for the first time
and the message appears, there are about 2.6
gallons (10 liters) of fue l left in the tank.
Ii] Fuel tank system malfunction! Contact deal­
er
T he re is a malfunction in the fuel tank system.
Drive to an authorized Audi dealer or authorized
Audi Serv ice Facility immediately to have the
malfunction corrected .
{!) Tips
More information on refueling is available on
page
¢ page 212.
• Washer fluid level
m Please refill washer fluid
Fill the washer fluid for the windshield washer
system and the headlight washer system* when
the ignition is switched off ¢
page 231.
• Windshield wipers
m Windshield wiper defective
There is a malfunction with the windsh ield wip­
ers .
Drive to an authorized Audi dealer or authorized
Audi Serv ice Facility immediately to have the
malfunction corrected .
~/0$ Defective light bulb warn ing
If the J:!1 ind icator light turns on, a light has
failed. The message ind icates the location of the
light. If the
[tD indicator light a lso turns on, then
a rear fog light has failed. The position of the in­
dicator light corresponds with the location on the
vehicle.
Drive to an authorized Audi dealer or authorized
A udi Service Facility immed iately to have the
malfunction corrected.
Vehicle lights: Malfunction
There is a malfunction in the headlights or the
light switch.
21

Instruments and indicator lights
Drive to an authorized Aud i dea ler or authorized
Audi Service Faci lity immediately to have the
malfunct ion corrected .
~(D Headlight range control
El Headlight range co ntrol: defe cti ve !
If the symbo l illuminates, the headlight range
control is no longer working properly. Have the
system checked and repaired at your A udi dealer .
1aO Adaptive Light
Applies to veh icles: with Adapt ive Light
mi Aud i adapti ve light: system fault
If the indicator lig ht t urns on and this message
appears, there is a malfunction in the adaptive
light system . The headlights still f unction.
Go to an a uthorized dea le rship to have the head ­
lights or the control unit for the Adaptive Light
repaired.
~ o Light/rain sensor
El Automatic headlights / automat ic wipe rs:
System fault
The light/rain sensor is malfunctioning.
F or safety reasons , the low beams are turned on
permanen tly with the switch in
AUTO. However,
you can continue to turn the lights on and off us­
ing the light switch . You can still control a ll func­
tions that are independent of the rain sensor
t hrough the windshield wiper lever.
D rive to an a uthorized Audi dea ler or a uthorized
Aud i Service Faci lity immediately to have the
malfunct ion corrected.
!-- : Sport differential
Applies to veh icles: w ith sport different ia l
II) Sport di fferential : system fault
There is a malfunction with the sport differentia l.
Drive to your aut ho rized Aud i dea le r i mmedia tely
to have the ma lfunction co rrec ted .
II) Sport differential: overheating
22
The transm ission temperat ure has increased s ig ­
nificantly d ue to the sporty driving manner. Drive
i n a less sporty manner unt il the temperature re­
turns to the normal range and the indicator light
switches of.
A WARNING
-
Contact your author ized Audi dealer or a
qualified workshop if the spo rt differential is
fa ulty o r malfunctioning . The repa ir must be
performed by trained pe rsonnel using the cor­
rect o il in order to ens ure s afety.
¢ ¢Turn signals
The indicator light blinks when you use either
turn signal.
Wheneve r you use the left B or the right B
turn s ignal, the indicator light blinks . When you
use the eme rgency flashers, bot h indicator lights
flash.
If one of the turn signa l light bulbs burn out, the
turn s ignal will bli nk twice as fast as normal.
Carefully dr ive to your author ized Audi dealer im­
med iate ly to have the malfunction cor rected. The
i ndica tor l igh t does not ind icate a ma lf u nction if
a turn signal on the tra iler or on the vehicle fails
i n tra iler towing mode.
(D Tips
Fo r more informa tion on the turn s ign als , re­
fer to<=>
page 44.
CRUISE 1• 0 Cruise control
The warning/indicator lig ht (ij;(l)~14 (USA mode ls)/
l'I (Canada mode ls) illuminates when the cruise
control is activated <=>
page 83.

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CD Note
-Vehicle components such as the engine ,
transmission, suspension or e lectr ical sys­
tem can be severe ly damaged by driving
through water .
- Always switch the Start-Stop -System* off
when driving through water
c> page 80.
@ T ips
- Determine the depth before driving through
water.
- Do not stop the vehicle, drive in reverse or
switch the eng ine off when driving through
water.
- Keep in mind that oncoming vehicles may
create waves that raise the water level and
make it too deep for your vehicle to drive
through safely.
- Avoid driving through sa lt water (corrosion).
Catalytic converter
Applies to vehicles: with gasoline engine
It is very impor tan t tha t your emission control
system (catalyti c converter) is functioning prop­
erly to ensure that your vehicle is running in an
environmentally sound manner .
... Always use lead-free gasoline c> page 210,
F uel supply .
... Never run the tank down all the way to empty .
.,. Never put too much motor oil in your engine
c> page 222, Adding engine oil~-
.,. Never try to push- or tow-start your veh icle.
The catalytic converter is an eff icient "clean-up"
dev ice bu ilt into the exhaust system of the vehi­
cle . T he catalytic converter burns many of the
pollutants in the exhaust gas before they are re­
l eased into the atmosphere.
The exclusive use of unleaded fuel is cr itically im ­
portant for the life of the catalyt ic converte r and
proper functioning o f the eng ine .
A WARNING
The temperature o f the exhaust system is
high, both when driving and after stopping
the engine .
Driving and th e en vir onm ent
- Never touch the exhaust tail pipes once they
have become hot. Th is could resu lt in burns.
- Do not park or operate the vehicle in areas
where the hot exhaust system may come in contact w ith dry grass, brush, fuel spill or
other material which can cause a fire.
- Do not app ly additional undercoating or
rustproofing on or near the exhaust mani­
fold, exhaust pipes, catalytic converter or heat shields . During dr iving, the substance
used for undercoat ing could overheat and
cause a fire .
CD Note
-Be aware that just one tank filling with lead­
ed
fuel w ill already ser iously degrade the
performance of the catalyt ic converter .
- Do not exceed the correct engine oil level
¢ page 222.
-Do not drive until the fuel tank becomes
completely empty . The engine cou ld misfire .
Unburned fuel could also get into the ex­
haust system and this cou ld cause the cata­
lyt ic converter to overheat.
- Do not switch off the ignit io n while the veh i­
cle is movi ng.
- Do not continue to ope rate your veh icle un­
der these conditions, as othe rwise f uel can
reach the catalytic converter . This could re­
sult in overheating of the co nve rter , requ ir­
ing its replacement .
- T o assu re eff icient operation of the Emission
Contro l System:
- Have your vehicle maintained properly and
in accordance w ith the serv ice recommen­
dat ions in your Warranty
& Maintena nce
booklet .
- Lack of proper maintenance as we ll as im­
p roper use of the vehicle will impair the
function of the emission control system
and could lead to damage.
@ For the sake of the environment
Even when the Emiss ion Control System is op­
erating properly, the exhaust gas can have a
su lfu r-like exhaus t gas sme ll unde r some op­
erating states. Th is depends on the s ulf ur
197

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Reducing unnecessary idling
Even when your car is just idling it burns up fuel.
~ Shut the engine off when you are not driving
the vehicle.
~ Do not warm up the vehicle by letting the en-
gine run at idle .
The idling phase is automatically reduced for
veh icles with the Start-Stop-System . It is effi­
cient to switch off the engine in vehicles without
the Start-Stop-System when stopped at railroad
crossings and long red lights. Turning the engine
off for just 30-40 seconds saves more fuel than is
burned by starting the engine again.
It takes a long time for the engine to warm up
fully when it is running at idle . However, wear
and noxious emissions are especially high when
the engine is warm ing up. So you shou ld drive
away as soon as you start the engine and avoid
running at high rpms while the engine is still
warming up .
(D Note
Do not leave engine idling unattended after
starting. If warning lights should come on to
indicate improper operation, they would go
unheeded. Extended idling a lso produces
heat, wh ich could resu lt in overheating or oth­
er damage to the vehicle or other property.
Regular maintenance
A badly tuned engine unnecessarily wastes a lot of fuel.
~ Have your vehicle serviced at regular intervals.
By having your vehicle regularly serviced by an
Aud i dea ler helps to ensure that it runs properly
and economica lly. The condition of your vehicle
not only affects its safety and ability to hold its
value, it a lso affects fuel consumption .
Check your oil each time you fill your tank.
The amount of oil used is related to engine load
and speed.
Driving and the environment
It is normal for the oil consumption of a new en­
gine to reach its lowest value after a certain mile­
age has been driven.
You must drive your veh icle about 3,000 miles
(5,000 kilometers) before you can properly as ­
sess oil consumption .
T h is also applies to fuel consumption and engine
o ut put .
CD Note
- Have your vehicle maintained properly and
in accordance with the service recommenda­
tions in your Warranty
& Maintenance book­
let . Lack of proper maintenance as well as
improper use of the vehicle will impair the
function of the em ission contro l system and
cou ld lead to damage.
- Do not alter or remove any component of
the Emission Control System unless ap­
proved by the manufacturer.
- Do not alter or remove any device, such as
heat shields, sw itches, ignition wires,
valves, which are designed to protect your
vehicle's Emission Control System and other important vehicle components .
Fewer short trips
Fuel consumption will always be relatively high
on short trips .
~ Try to avoid dr iv ing short distances w ith a co ld
eng ine .
The engine and cata lytic converter have to reach
their optimal operating temperature to reduce
fuel consumpt ion and nox ious em issions effec­
t ively.
Just after starting, a co ld engine in a mid-size car
only achieves a fuel economy of 6-8 mi les per
gallon (30-40 l/100 km) . After about a half a
mile, fuel economy climbs to 12 mpg (20 l/100
km). After about
2.5 miles (4 km), the eng ine is
at its proper operating temperature and fuel
economy has reached a norma l level. So you can
see that you should avoid short trips whenever
poss ible. .,.
199

Checking and F ill in g
areas, into open streams or down sewage
drains.
- Recycle used engine o il by taking it to a used
engine oil collection facility in your area, or
contact a service station.
Cooling system
Coolant
T he engine coolant performs two functions: it
keeps the engine from overheating and it pro ­
tects the engine from freezing in the winter .
The cooling sys tem is sealed and generally re­
qu ires little attention .
T he cooling system has been filled at the facto ry
with a permanent coo lant wh ich does not need to
be changed . T he coolan t consists of a mixture of
specially condit ioned water and the manufactur ­
er's glycol-based coolant addit ive Gl3 ant ifreeze
with a nticorrosion add itives (50% fo r USA mod­
e ls · 60% for Canadian mode ls). Thi s m ix tu re both
'
assures the ne cessary fros t protection and pro -
t ects meta l components in t he engine's cooling
system from corrosion and scaling. It a lso raises
the boiling point of the coolant.
D o not reduce the concentr ation o f the coo lant in
the summer by addi ng p la in water.
The propor­
tion of coolant additive must be at least 50 %
but not more than 60 %
to maintain antifreeze
protection and cooling efficiency .
If the coolant
frost protection is too low, the coolant could
freeze and damage the ve hicle heati ng and en­
g ine cooling system .
For year-round driving, antifreeze is added at the
factory for tempera tures down to:
- -3 1 °F (- 35°C)USA
- - 4 0 °F ( - 4 0 °C) Canada.
I f you must add coo lant, use a m ixt ur e of wate r
a nd coolant add it ive. Mixing the coolant additive
w ith d istilled w ate r is recommended.
_& WARNING
Before yo u check any thing in t he engine com­
par tment, always read and hee d all WA RN -
224
INGS ~ &. in Working in the engine compart­
ment on page 218.
(D Note
- Be fore wi nter sets in, have the coo lant
checke d to see if the coolant additive in you r
vehicle is sufficient to meet the climate con­ ditions. This is espec ia lly impo rtant if you
live in a region where the winter is extreme­
ly cold . If necessary, increase the p roportion
of coolan t addit ive to 60% .
- Whe n adding coolant additive to your cool­
ing system, remember:
- We re commend usin g on ly cool ant addi­
tive Gl2++ o r Gl3 (chec k the label) fo r
your ve hicle. This coo lant additive is avai l­
ab le at aut horized Aud i dea le rs . Othe r
types of ant ifreeze can significant ly re­
d uce co rrosion protection. The resulting
corrosion can cause a loss of coolant a nd
serious e ngine damage .
- Do not add any type of rad iator leak sealant
to your vehicle's engine coolant. Adding ra ­
diator repa ir fl uid may adverse ly affec t the
func tion and perfo rmance of your cooling
system a nd could result in d amage not cov­
ere d by yo ur N ew Vehi cle Lim ited War ranty.
Checking the engine coolant level
The engine coolant level can be checked with a
quick glance.
Fi g. 1 91 Eng ine co mpar tmen t: c over on t he coo la nt expa n­
sio n tan k
Befo re you check a nyth ing in the eng ine compart­
men t,
always read and he ed all WARNINGS
~ A in Working in the engine compartmen t on
page 218. ..,.