2017 AUDI A4 coolant temperature

Cockpit overview
Instrument cluster
Instrument cluster overview
The instrument cluster is the central information center for the driver.
Fig. 3 Instrument cl uster overv iew (analog)
F ig . 4 Instrument cluster overv iew (Audi v irtual cockpit )
(D Engine coolant temperature gauge
@ Tachometer ... .............. .
- with
OFF status indicat or .. .. .
- with
READY status indicator .. .
@ Tab area .... ... ... ....... ... .
@ Central area with
- Driver informat ion system .. .. .
- Indicator lights ........... . .
® Status line (displayed on one or two
lines)
@ Speedometer/convenience display
0 Fuel level
10
11
11
76
76, 78
12
16
26
12
@ Speedometer
® Left additional display (divided in
two sections in the enhanced view)
There may be additional indicator lights in the
tachometer @, the speedometer @, the status
line ® and, depending on the instrument clus­
ter, above or below the central area@.
The following pages will primarily show illustra­
tions of the multi-color analog instrument clus ­
ter*. The display and/or position of the element
shown may vary in monochrome instrument clus-
ters or in the Audi virtual cockpit* .
lllJ,,

A WARNING
Do not assume the roads are free of ice based
on the outside temperature display. Be aware
that there may be ice on roads even when the outside temperature is around 41 °F (+5 °C)
and that ice can increase the risk of accidents.
@ Tips
-Depending on vehicle equipment, the in­
strument illumination (needles and gauges) may turn on when the lights are off and the
ignition is switched on. The illumination for
the gauges reduces automatically and even­
tually turns off as brightness outside in­
creases. This function reminds the driver to
turn the low beams on at the appropriate
time.
- You can select the units used for tempera­
ture, speed and other measurements in the
Infotainment system c::>
page 229.
-If your vehicle is stationary or if you are driv­
ing at very low speeds, the temperature dis­
played may be slightly higher than the ac­
tual temperature outside due to the heat ra­
diating from the engine.
- At temperatures below 41 °F (+5 °C), a
snowflake symbol appears in front of the
temperature display c::>
A.
Coolant temperature indicator
The coolant temperature display@c::> page 10,
fig . 3
or c::> page 10, fig. 4 only functions when
the ignition is switched on. To prevent engine
damage, please observe the following notes
about the temperature ranges.
Cold range
If only the LEDs at the bottom of the gauge turn
on, the engine has not reached operating tem­
perature yet . Avoid high engine speeds, full ac­
celeration and heavy engine loads.
Normal range
<( ~ The engine has reached its operating tempera-
~ ture once the LEDs up to the center of the gauge N
8 turn on under normal driving conditions. The 0
3 Cockpit overview
LEDs higher up may turn on if the engine is under
heavy load or the outside temperature is high.
This is no cause for concern as long as the. in­
dicator light in the instrument cluster does not
turn on. If the LEDs in the upper area of the dis­
play and the. indicator light in the instrument
cluster display turn on, the coolant temperature
is too high
c::> page 31.
(D Note
-Auxiliary headlights and other accessories in
front of the cooling-air intake impair the
cooling effect of the coolant. This increases
the risk of the engine overheating during
high outside temperatures and heavy en­
gine load.
- The front spoiler also helps to distribute
cooling air correctly while driving. If the
spoiler is damaged, the cooling effect will
be impaired and the risk of the engine over­
heating will increase. See an authorized
Audi dealer or authorized Audi Service Fa­
cility for assistance.
(D Tips
Diesel engines: due to the high efficiency of
these engines, the engine may not always reach operating temperature in cold outside
temperatures. This is normal and not a cause
for concern .
Tachometer
The tachometer displays the engine speed in rev­
olutions per minute (RPM) .
The beginning of the red zone in the tachometer
indicates the maximum permitted engine speed
for all gears once the engine has been broken in
and when it is warm . Before reaching this zone,
you should shift into the next highest gear, select
the D/S selector lever position, or remove your
foot from the accelerator pedal.
{Q) Note
The needle in the tachometer @c::> page 10,
fig. 3
or c::> page 10, fig. 4 may only be in the
red area of the gauge for a short time or there ..,.
11

<( a, .... N ,....
N .... 0 0
3 a,
Please relea se parking br ake
Re lease the par king brake if this message ap ­
pears .
Please press brak e pedal to r ele as e par king
brake
To release the parking brake, press the brake
pedal and press the~ button at the same time,
or start driv ing with hill start ass ist
¢ page 82,
Starting from a stop .
(D Tips
For additional information on the parking
brake, refer to ¢
page 81.
_L Cooling system
• Turn off engin e and che ck co olant le vel.
The coolant level is too low.
Do not continue driving and switch the engine
off. Check the coolant level ¢
page 310.
-If the coolant leve l is too low, add coolant
~ page 310. Only continue driv ing once the in­
dicator light turns off.
• Coolant temperature : to o high . Let engine
run with vehicle s tati onar y
Let the eng ine run at idle for a few minutes to
cool off, until the ind icator light tu rns off.
- If the indicator light does not turn off, do not continue driving the vehicle. See an author ized
Audi dealer or author ized A udi Se rvice Facility
for assistance.
_& WARNING
- Never open the hood if you ca n see or hear
steam o r coolant escaping from the engine
compartment. This increases the risk of
burns . Wait until you no longer see or hear
steam or coolant escap ing .
- The engine compartment in any veh icle can
be a dangerous area. Stop the engine and
allow it to cool before working in the engine
compartment. A lways follow the informa­
t io n found in
¢ page 304, Working in the
engine compartment.
Coc kpit o ve rv iew
(D Note
Do not continue driv ing if the . indicator
light turns on as this increases the risk of en­
gine damage.
~ -Safety belt
The . indicator light stays on until the dr iver 's
and front passenger's safety belts are fastened .
Above a certa in speed, there will also be a war n­
ing tone.
@ Tips
For additional informat ion on safety belts, re ­
fer to¢
page 245 .
0 Generator/battery
If the . or(•) indicator light t urns on , the re is a
malfunction in the generator or the vehicle e lec­
t rical system .
• Electric al sy stem: malfunction! Saf ely stop
v e hicle
Do not continue dr iving and switch the engine
off . See an authorized Audi dealer or authorized
Audi Se rvice Facility for assistance .
(•j Electrical system: mal function! Re start not
po ssible . Plea se co ntac t Se rvice
Disconnecting the vehicle battery from the elec­
trical system prevents it from d ischarging. Drive
to an authori zed Aud i dealer or authori zed Aud i
Service Facility immed iately .
Do not stop the engine, or you w ill not be able to
start it again. If you can no longer start the en­ gine, see an authori zed Audi dealer or autho riz ed
Audi Service Facility for assistance .
(•) Electri cal system: malfunction! Ple ase con­
tact Se rvice
Drive to an authori zed A udi dealer or authorized
A udi Service Facility immediate ly. Because the ve­
hicle battery is discharging, turn off a ll unneces­
sary electrical equipment such as the rad io. See
your authori zed Aud i dealer or authori zed Audi
Service Facility if the battery charge level is too
~w . ~
31

To keep the rear window defogger on continuous­ly, press the
Qi!) REAR button longer than 3 sec­
onds. Th is is stored until the ignition is sw itched
off.
SYNC
Synchronizat ion
Use the rocker switch ® to select the fu nct ion .
When synchronization is switched on, the set­
tings for the driver's side are applied to the front
passenger's side and the rear (except for seat
heating/ventilation*). When the settings on the
front passenger's s ide or in the rear are changed,
the synchronization is automatically sw itched off
and
3-zone appears in the display .
SET REAR
function
Use the rocker switch ® to select the funct ion.
When the function is switched on, you can adjust
all settings for the rear using the climate control
system controls in the cockpit . The rear climate
control system controls can not be operated at
the same time. This function switches off a uto­
matically after a certain period of time or after
l eav ing the menu.
Air vents
You can open or close the center and rear vents in
the cockpit and the vents in the rear center con­
sole using the ridged thumbwheels. The levers
adjust the direction of the airflow from the vents.
The wide ve nt is opened and closed using the
rocker switch ®·
Residual heat
You can activate the residual heat funct ion when
the ignition is switched off by pressing the knob
(D. The res idual heat from the coolant is used to
h eat the vehicle inte rior. The residual heat fu nc­
tion switches off automatically after about 15
minutes .
A WARNING
-You should not use the recirculation mode
for an extended period of time since no
fresh a ir is drawn in. With the air-condition­
ing switched off, the windows can fog up,
wh ic h increases the r isk of an accident.
Warm and cold
-Individuals with reduced sensit ivity to pain
or temperature could develop burns when
using the seat heating function. To reduce
the risk of injury, these individuals should
not use seat heating.
(D Note
To avoid damage to the heating elements in
the seats, do not knee l on the seats or place
heavy loads on a small area of the seat.
Basic settings
The climate control system basic settings are ac­
cessed in the Infotainment system.
.,. Select in the Infotainment system: I MENU ! but­
ton
> Vehicle > left control button > Air condi­
tioning
Automatic recirculation
When switched on, automatic rec irculat ion con­
trols the recircu lation mode automatically . You
must press the@
MAX button if fog forms on
the windows.
Automatic auxiliary heater*
T he auxi liary heater he lps to warm the vehicle in­
terior more quickly.
Steering wheel heating
Applies to: veh icles w ith stee ring w hee l heat ing
The steering wheel rim can be heated.
Fi g. 75 Steering whee l: steer ing whee l heating button
.,. Press the button to sw itch the steering wheel
heating on and off~-The message
Steering
wheel heating: on /Steering wheel heating: off
appears in the instrument cluster displa y. IJ,,
71

<( a, .... N ,....
N .... 0 0
3 a,
briefly or press and hold for longer than two sec ­
onds.
A WARNING
- Never t urn off the engine before the veh icle
has come to a comp lete stop.
- Please note that the brake booster and pow­
er steering on ly work when the engine is
running. When the engine off, you must use
more force to steer or b rake the ve hicle. Be­
cause the usual steering and brak ing capa ­
b ili ty is not ava ila ble, the risk of accid ents o r
injuries i ncre ases .
- For safety reasons, always park the vehicle
with the se lector lever in the P position .
Ot herwise, the re is the r is k t hat the vehicle
c o ul d roll uninten tion ally.
- After the engine h as bee n sw itched off, the
r adi ator fan c an con tinue to run for up to
1 0
m inu tes -even wi th the ig nition switche d
o ff . I t can a lso switch on again after some
t ime if the coolant temperature rises as the
result of heat buildup or if t he engine is a l­
ready warm and the engine compartment is
also heated by the sun's rays.
(D Note
I f the en gine has been under heavy load for
an e xtended per io d of t ime, heat builds up in
the engine compartment after the engine is
sw itched off and there is a risk of damagi ng
the engine . For this reason, let the eng ine run
at idle fo r approximately two minu tes before
shut ting it off .
Messages
Engine running. Warning! Turn off ignition be­
fore leaving car
This message appea rs and a warn ing tone sounds
i f you open t he d river's doo r when the engi ne is
ru nning.
Please press brake pedal
This message appea rs if you do not press the
brake pedal when starting the eng ine.
D riving
Ill Remote control key: key not recognized. Is
the key still in the vehicle?
T h is ind icator l igh t tu rns on and this message ap­
pears if the ignition key was remove d from the
vehicle when the engi ne was running . If the ig ni­
tion key is no lo nger in the vehicle, you cannot
switch on the ignition or start the engine once
you stop it . You also cannot lock the ve hicle from
the outside .
Shift to P, otherwise vehicle can roll away.
Doors can be locked in P only
T h is mess age appears for safety re asons if the
selector lever is in the N pos it ion when yo u
switch the ignition off. Move the se lector lever to
t h e P position . Othe rw ise the vehicle is not pro­
tected from roll ing and it cannot be locked.
II Remote control key: hold back of key
against the de signated area. See owner' s man­
ual
If t he indica to r ligh t turns on and this message
appea rs, there is a malfunction ~
page 78.
Shift to P before leaving car, otherwise vehicle
can roll away
Th is message appears if the drive r's door is
opened wh ile the ign ition is switched on an d the
t ran sm issio n has not been s hifte d to t he
P posi­
t ion. Shift t he tr ansmission in to the
P p o sition
and t urn o ff the igni tion if you are leaving the ve­
hicle . Otherwise the vehicle could roll. A lso refe r
to
~ page 80.
77

label is located on the driver's side B-pillar. In­
f late trai ler tires to trailer and tire manufactur­
ers' specifications.
Lights
The headlight settings should be checked with
the trailer attached before driving off. Check to
make sure both vehicle and trailer lights are
working properly.
Safety chains
Be sure trailer safety chains are properly connect­
ed from the tra iler to the hitch on the vehicle.
L eave enough slack in the chains to permit turn­
ing corners. When you install safety chains, make
sure they wi ll not drag on the road when you are
driving.
The chains shou ld cross under the trailer tongue
to prevent it from dropping in case of separation
from the hitch.
Driver messages
Driving with a trailer requires extra caution .
Weight distribution
Towing a loaded trailer w ith an empty car results
in a high ly unstable dist ribution of weight . If this
cannot be avo ided, drive at very low speeds only
to avoid the risk of losing steering control.
A "balanced" rig is easier to operate and cont rol.
This means that the tow vehicle should be loaded
to the extent possible and permissible, while
keeping th e trailer as light as possib le under the
circumstances . Whenever possib le, transfer
some cargo to the luggage compartment of the
tow vehicle whi le observing tong ue load require­
ments and vehicle loading considerations.
Speed
The higher the speed, the more difficult it be­
comes for the driver to contro l the rig. Do not
drive at the maximum permissible speed. Reduce
your speed even more if load, weather or wind
<( conditions are unfavorable -particularly when a,
;::; going downhill. ,....
N .... 0 0
3 a,
Trailer towing
Reduce vehicle speed immediately if the trailer
shows the slightest sign of swaying.
Do not try
to stop the swaying by accelerating.
Observe speed limits. In some areas, speeds for
vehicles towing trailers are lower than for regular
vehicles .
Always apply brakes early. When driving down­
hill, shift into a lower gear to use the eng ine
braking effect to slow the vehicle . Use of the
brakes alone can cause them to overheat and fail.
Coolant temperature
T he coolant temperature gauge~ page 11 must
be obse rved carefully. The coolant temperature
can increase if you drive on long inclines in a low
gear at high engine speeds . Reduce your speed
immediately if the LEDs in the top part of the dis­
play turn on.
For more information about indicator lights, re­
fer to.
~ page 31 .
A WARNING
= -
Anyone not properly restrained in a moving
vehicle is at a much greater risk in an acci­
dent. Never let anyone ride in your car who is
not properly wearing the restraints provided
by Aud i.
Trailer towing
information
Important to know
Your vehicle handles differently when towing a
trailer because of the addit ional weight and dif­
ferent weight distribution . Safety, performance
and economy will greatly depend on how careful­
ly you load your trailer and operate you r rig.
Before you actually tow your trailer, pract ice
turning, stopping and backing up in an area away
from traffic . Keep pract ic ing until you have be­
come complete ly familiar w ith the way your vehi­
cle-trailer combination behaves and responds.
91

Consumer inf orm ation
today's a utomo biles, have steadily re duced the
scope of maintenance and repairs whic h can be
carried out by veh icle owners.
Also , sa fet y and
en vironmental
concerns place very strict limits
on the nature of repairs and adjustments to en­
g ine and transmission parts wh ich an owner can
perform .
Maintenance, adjustments and repairs usually re­
qu ire special tools, testing devices and other
equ ipment available to specially trained work ­
shop personnel in order to assure proper per­
forma nce, re liability and safety of the veh icle and
its many systems.
Improper maintenance, adjustments and repairs
can impair the operation and reliab ility of your
ve hicle and eve n void your vehicle warranty .
Therefo re, proof of se rvicing in a ccordance w ith
the m aintenance sched ule may be a condition for
up ho ld ing a possible wa rranty claim made within
the wa rranty pe riod.
Above all, ope rational safety can be adversely af­
fected, cre ating unne cessa ry risks fo r you and
your passengers.
I f in doubt about any servicing, have it done by
your author ized Audi dealer or any other properly
eq uipped and qualified workshop . We strongly
urge you to g ive your author ized Audi dealer the
opportunity to perform a ll scheduled mainte ­
nance and necessa ry repairs. Your dealer has the
facilities, origina l parts and tra ined specialists to
keep your veh icle runn ing properly.
P e rforming limited maintenance yourself
The fo llow ing pages describe a limited number of
procedures whic h can be performed on your vehi­
cle with ordinary tools, should the need arise and
tra ined personnel be unava ilable. Before per­
forming any of these procedures, always thor­
ough ly read all of the app licab le text and carefu l­
ly follow the instructions g iven . A lways rigorously
observe the
WARNINGS prov ided .
Befo re yo u check anything in the engine com ­
partment, always read and heed all WARNINGS
c::> & and c::> & in Working in the engine compart­
ment on page 304.
364
A WARNING
-
- Ser ious personal in jury may occur as a result
of imp roperly performed maintenance, ad­
justments or repairs .
- Always be extreme ly careful when work ing
on the vehicle . Always follow commonly ac­
cepted safety practices and general com­ mon sense. Never r is k personal in jury.
- Do not attempt any of the mainte nance,
checks or repairs described on the following pages if you are no t fu lly fam iliar with these
or other proce dures with respect to the ve­
hicle, o r are uncert ain how to p ro ceed.
- Do not do any work wi thout the prope r tools
a nd equi pmen t. H ave the necess ary wo rk
done by your authorized Au di dealer or an ­
other properly equipped and qualified work­
shop.
- The engine compartment of any motor vehi ­
cle is a potentially hazardous area . Never
reach into the a rea around or touch the radi­
ator fan. It is temperature controlled and
can switch on suddenly - even when the en­
gine is off and the ignition key has been re­
moved. The rad iator fan switches on auto­
mat ica lly when the coolant reaches a certain
temperature and will con tinue to ru n until
the coolant temperat ure drops.
- Always remove the igni tion key before any­
one gets u nder the vehicle.
- Always support your vehicle with safety
stands if it is necessary to work underneath
the vehicle. The ja ck* s upplied w ith the vehi­
cle is no t ad equate for t his purpose and
could collapse causing se rious personal in ­
jury .
- If you must wor k underne ath the vehicle
with the wheels on t he ground, always make
sure the vehicle is on level ground, that the
wheels a re always sec urely blocked and that
the engine cannot be started.
- Always make sure the transmission se lector
lever (automatic t ransm iss ion) is in P (Park
position) and the park b rake is applied.

Index
Collision avoidance assist . . . . . . . . . . . . . . . 108
Command (voice recognition system) . . . . . 153
Compartments . . . . . . . . . . . . . . . . . . . . . . . . 64
Compass in the mirror . . . . . . . . . . . . . . . . . . 58
Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . 366
Connection manager 230
Connections refertoMedia .. ............. ... 209,217
Consumer information . . . . . . . . . . . . . . . . . 363
Consumer Information . . . . . . . . . . . . . . . . . 243
Consumption (fuel) . . . . . . . . . . . . . . . . . . . . 16
Contacting NHTSA . . . . . . . . . . . . . . . . . . . . 243
Contacts .. .. . .
.... ........... .... ... 168
Additional directory .............. .... 231
importing/exporting . . . . . . . . . . . . . . . . . 169
Memory capacity . . . . . . . . . . . . . . . . . . . . 170
Storing as destination . . . . . . . . . . . . . . . . 194
Control buttons (operating the MMI) . . . . . 143
Control knob with joystick function
(MMI op­
eration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Convenience key Switching the ignition on . . . . . . . . . . . . . . 76
Unlocking/locking . . . . . . . . . . . . . . . . . . . . 40
Convenience opening/closing . . . . . . . . . . . . 46
Convertible child safety seats . . . . . . . . . . . 285
Convertible locking retractor
Activating . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Deactivating . . . . . . . . . . . . . . . . . . . . . . . . 291
Using to secure a child safety seat . . . . . . 290
Cooling mode (climate control system) 69, 70
Cooling system Coolant.. .. .. ... ............ .... .. . 310
Coolant temperature indicator . . . . . . . . . . 11
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 31
Cornering light . . . . . . . . . . . . . . . . . . . . . . . 121
Cross hairs
189
Crossing water . . . . . . . . . . . . . . . . . . . . . . . . 73
Cruise control system . . . . . . . . . . . . . . . . . . . 93
Cup holders . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Current consumption . . . . . . . . . . . . . . . . . . . 16
D
Data connection 178
Data protection . . . . . . . . . . . . . . . . . . . 179, 209
Data recorder . . . . . . . . . . . . . . . . . . . . . . . . 139
370
Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16, 229
Date display . . . . . . . . . . . . . . . . . . . . . . . . . 229
Daytime running lights . . . . . . . . . . . . . . . . . SO
Declaration of compliance
Audi adaptive cruise control . . . . . . . . . . . 366
Audi side assist . . . . . . . . . . . . . . . . . . . . . 366
Cell phone package . . . . . . . . . . . . . . . . . . 366
Convenience key . . . . . . . . . . . . . . . . . . . . . 366
Electronic immobili ze r . . . . . . . . . . . . . . . . 366
Garage door opener (Homelink) . . . . . . . . 366
Remote control key . . . . . . . . . . . . . . . . . . 366
Defective light bulb
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 35
Defrosting (windows) . . . . . . . . . . . . . . . . . . . 70
D EF (instrument cluster) . . . . . . . . . . . . . . . . 12
Demo mode
refer to Pr ese ntation mod e . . . . . . . . . . . . 195
Destinat ion on the map
V ia the MMI touch . . . . . . . . . . . . . . . . . . . 189
Determining correct load limit .......... 331
Diesel Diesel particulate filter . . . . . . . . . . . . . . . 303
Draining water from the fuel filter . . . . . . . 34
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 34
preheating . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Dies el fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
D igital compass . . . . . . . . . . . . . . . . . . . . . . . 58
Digital Rights Management . . . . . . . . . . . . . 209
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 362
Dimming the rearview m irror . . . . . . . . . . . . 55
Directory
refer to Contacts . . . . . . . . . . . . . . . . . . . . 168
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Infotainment system display . . . . . . 142, 230
Instrument cluster . . . . . . . . . . . . . . . . . . . . 15
Multifunction steering wheel . . . . . . . . . . . 12
Versions (MMI) . . . . . . . . . . . . . . . . . . . . . . 142
Distance driven . . . . . . . . . . . . . . . . . . . . . . . . 16
Doors Emergency locking . . . . . . . . . . . . . . . . . . . . 42
Draining water from the fuel filter (Diesel) 34
Driver information system
Energy consumers . . . . . . . . . . . . . . . . . . . . 17
On-board computer . . . . . . . . . . . . . . . . . . . 16
Outside tempe rature display. . . . . . . . . . . . 10