2014 AUDI Q5 check engine light

Checking the engine coolant level
The engine coolant level can be checked with
a quick glance .
Fig. 201 Eng ine co mpa rtme nt: cove r on the coola nt
exp ansion tank
Before you check anything in the engine com­
partment,
a lway s re ad and he ed all WARN ­
INGS ¢ A in Working in the engine compart­
ment on page 231 .
.,. Park your vehicle on a level surface.
.,. Turn off t he ignit ion.
.,. Read the eng ine coolant level from the cool­
ant expansion tank¢ fig . 201, ¢ page 233,
fig. 198 . With a cold eng ine , the coola nt
level should be between the "M IN " and
"MAX" markings . W hen the eng ine is warm,
the leve l may be slightly above the "MAX"
marking.
The location of the coolant expans ion tank
can be seen in the engine compartment illus­
tration ¢page 233.
To obtain an accurate read ing, the eng ine
must be switched off.
The expans ion tank in your vehicle is equipped
with an e lectr ic coolant level sensor .
When the coo lant level is too low, the warning
light in the Auto -Check System ¢ page 30 will
blink until you add coo lant and the level has
been restored to normal. Even though there is
a n elec tric coolant leve l sensor, we s till rec­
ommend you chec k the coolant 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 239
ing system shou ld be inspected immediately
by your authorized Audi dealer . It is not
eno ugh merely to add coo lant .
In a
s ealed system, losses can occu r on ly if
the boiling point of the coo lant is exceeded as
a resu lt of overheating.
(D Note
Do not a dd any type o f radiator leak se al­
ant to your veh icle's engine coo lant. Add ­
ing radiator repa ir flui d may adverse ly af­
fect the funct ion and performance of yo ur
cooling system and could result in damage not covered by your New Vehicle Limited
Warranty.
Adding coolant
Be very careful when adding engine coolant.
Before you check anything in the engine com ­
partment,
always read and heed alt WARN­
INGS ¢ A in Working in the engine compart ­
ment on page 231 .
.,. Turn off the engine .
.,. Let the engine cool down.
.,. Place a thick rag over the coo lant expansion
tank ¢ page 239, fig. 201 and
carefully turn
the cap counter -clockwise ¢
_& .
.,. Add coolant m ixed in the co rrect rat io
¢ page 238, Coolant.
.,. Twis t the cap o n aga in tightly.
Rep lacement engine coo lant must conform to
exact spec ificat ions ¢ page 238, Coolant.
We recommend using only coolant add itive
Gl2 ++, Gl3 or in an emergency Gl2 +. Do not
use a different add itive . In an emergency use
plain water until you can get the correct addi­
tive and can restore t he cor rect ratio . Th is
sho uld be done as soon as possib le.
If you have lost a cons iderab le amount of
coolant, then you sho uld add cold ant ifreeze
and co ld wate r on ly w hen the eng ine is cold.
Always use new engine coo lant when refill ing .
Do not fi ll coo lant above the "MAX" mark. Ex­
cess coolant will be forced o ut through the
•
•

Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
N
N
;:;;
" 03
"'
Fi g. 202 Eng ine compartment: cover on the brake flu id
reservoir
Before you check anything in the engine com­
partment,
a lwa ys read and heed all WARN­
ING S c:> .&.. in Working in the engine compart­
ment on page 231 .
~ Read the brake fluid level from the brake
fluid reservoir
c:> fig. 202, <=> page 233,
fig . 198 .
The brake flu id level must be be ­
tween the "MIN" and "MAX" markings.
The brake fluid reservoir is located at the rear
partition of the engine compartment on the
left side
c::> page 2 33 .
The fluid level may drop slightly after some
time due to the automatic adjustment of the
brake pads . This is not cause for alarm .
If the brake fluid level falls
considerably be­
low the "MIN" mark, the brake warning/indi­
cator light (U.S. models:~, Canadian
models: .) will come on
c> page 18 and
c::> page 29 . Do not continue to operate the ve­
h icle. The complete brake system should be
thoroughly checked by an authorized Aud i
dealer o r qualified workshop and the cause
corrected.
If the brake fluid level is too low,
the brake warning/indicator light will illum i­
nate . Contact an authorized Audi dealer
im­
m ediatel y.
Checkin g and fillin g 241
Changing brake fluid
Have the brake fluid changed by on experi­
enced technician .
Brake fluid absorbs moisture from the air. If
the water 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
every 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 d ealer. 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
spe cificat 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 f luid 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 .

242 Checking and filling
@ For the sake of the environment
Be cause of the problem of proper disposa l
of brake flu id as we ll as the special tools
req uired and the necessary expert ise, we
recommend that you have the b rake fluid
changed by your author ized Audi dealer.
Battery
General information
Unde r normal operating conditions, the bat ­
tery in your A udi does not need any mainte ­
nance. With
high outside temperatures or
long daily dr ives we recommend that you have
the elect ro lyte level checked by an authorized
Aud i dea ler o r qualified workshop . The elec­
trolyte leve l sho uld a lso be c hecked each t ime
the battery is c harged ¢
page 244.
Have the battery checked when you take your
ve hicle in for service . Yo u are well adv ised to
replace a bat tery that is older tha n 5 yea rs .
W ith certa in types of a irbag deployment, t he
battery is d isconnected from the vehicle elec­
tr ica l system fo r safety reasons ¢
& in Re­
pair, core and disposal of the airbags on
page 171.
Hybr id d rive *: you can find important i nforma­
tion about the high voltage battery under
¢ page 97.
Disconnecting the battery terminals
Some veh icle functions (power w indow regu­
lators, for example) are lost if the battery ter­
minals a re discon nected. These functions have
to be re learned after the ba tte ry term inals a re
connect ed aga in. To prevent this , the battery
should only be d isconnected from the vehicle
e lec tric al sys te m whe n absolu tely necessa ry
for rep airs.
Vehicles not driven for long periods
If yo u do not dr ive you r vehicle over a pe riod
of severa l days or w eeks, ele ct rical com po­
n e nt s are gr adually cu t ba ck o r swi tched off .
T his redu ce s energy consu mp tion and mai n- ta
ins s tart ing c apability over a longer pe riod
¢ page 203.
Take i nto consi deratio n that whe n you unl ock
yo ur vehicle, some conven ien ce f un ctions ,
s u ch as the inte rior ligh ts or the powe r sea t
adjustment, may not be availab le. T he con­
venience functions will be avai lab le aga in
when you tu rn on the ign ition and start t he
engine.
Winter operation
Du ring the winte r mon ths, bat tery ca pac ity
tends to dec rease as tem peratures drop . This
is beca use more power is a lso consumed wh ile
starting, and the headlights, rear wi ndow de­
fogger, etc ., are used more often.
Avoid unnecessary powe r consum ption, pa r­
t icu lar ly in city traffic or when traveling only
sho rt distances. Let your authori zed Aud i
dealer check the capacity of the vehicle bat ­
te ry before winter sets in ¢
page 244. A well
c h arged battery will not on ly preven t starti ng
problems when the wea ther is cold, but w ill
also last lo nger.
Working on the battery
Be especially careful when working on or near
the ba ttery.
The battery is located in the luggage compart­
me nt under the floor . B efo re you c hec k any­
t hi ng in the luggage compartmen t,
read and
heed all WARNINGS
¢ & -
Hybrid dr ive* : yo u can find impo rtant informa­
t io n about the h igh vol tage ba tte ry unde r
¢page 97 .
Always heed the safety warnings , when work­
ing on the v ehicle ba tte ry or the vehicle e lec­
t rical sys tem to preven t inju ry .

246 Checking and filling
Windshield/headlight
washer container
M N
Fi g. 204 Engine compartme nt: cover on the w inds hield
and headlight * washer fluid rese rvoir
The washer flu id container is marked with t he
symbol Won its cap
Q fig. 204, ¢ page 233,
fig . 198 .
.. Before you check anyt hing in the engine
compartment,
always read and heed all
WARNINGS
¢ & in Working in the engine
compartment on page 2 31 .
.. Lift the filler cap tongue to add washe r flu­
id . Yo u can fill the container to the top .
.. Press the cap back onto the fi ller neck after
fill ing t he containe r.
You can find the rese rvoi r
capacity in the tab le
in
Q page 290.
Clean water should be used when fill ing up . If
possib le, use soft wate r to prevent scal ing on
the washe r jets. Always add a glass cleaner
solu tion (w ith fros t protection in the w inte r) .
(D Note
D o not mix engine coo la nt an tifreeze or
a ny ot her ad ditives to fi ll u p t he wind­
shie ld washer rese rv o ir.

300 Index
Center armrest
Adjusting . ................. ..... .. 66
Storage compartment . . . . . . . . . . . . . . . 66
Certification . . . . . . . . . . . . . . . . . . . . . . . 296
Changing A flat tire .. .......... ...... ... .. . 273
A wheel .. .. ................ ... ... 273
E ng ine oil ... ............ .. .. .. .. . 237
Checking Engine coolant level ....... .. .. .... . 239
Tire pressure .............. ... .. .. . 253
Child restraints Danger of using child restraints in the
front seat .... ........... .. .. .... . 158
System anchors .......... .. .. .. .. . 191
Where can I get additional information
about child restraints and their use? . . 196
Chi ld safety ................. .. .... . 178
Convertible locking retractor .. .. ..... 188
Important safety instructions for using
child safety seats ............. .. ... 181
Important things to know when dr iving
with chi ldren . ... ..... ... .. .. .. .. . 178
I nstalling a child restraint using the
L A T CH system . ......... .. .. .. .. .. . 193
Mounting and releasing the anchorage
hook .... ................ ... .... . 193
Tether anchors ............ ... .... . 194
Tether straps .............. .. .... . 194
Ch ild safety locks
Rear doors ............... ... .... .. 46
Child safety seats . .......... ... .. .. . 184
Booster seats ............. ... .. ... 186
Conve rtible child seats .... .. .. .. .. . 185
Conve rtible locking retractor .. .. .. .. . 188
Danger of using child restraints in the
front seat .. ................ ..... . 158
How do I properly install a child safety
seat in my vehicle? ........ .. .. .... . 181
Infant seats ............. .. .. .. .. . 184
Installing ................. .. .... . 188
LA TCH system ......... .... ... .. .. . 193
Lower anchorages ......... ... .. .. . 192
Safety instructions ... ..... .. .. .... . 181
Unused safety belts on the rear seat .. 183
Cigarette lighter ........... .. .. .. .. .. 75
C leaning .................... ..... . 217 Climate control
.... ............. ..... 79
Air vents . ..... .. .. .............. .. 81
Automatic recircu lation .......... ... . 81
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 80
Setup .... .... .. ............. .... . 81
Supplementary .. ................ .. 82
Synchronizing . ... ....... ...... .. .. . 81
Climatized cupholder ................. 74
Clock .. .. .. .... .. ............. ..... 12
Closing Panoramic sliding sunroof ........ ... . 47
Coat hooks ..... .. .. .............. .. 77
Cold tire inflation pressure .......... .. 251
Compass mirror . . . . . . . . . . . . . . . . . . . . . 59
Compliance ..... .. .. .............. . 296
Consumer Information . . . . . . . . . . 146, 293
Contacting NHTSA . ............... .. 146
Controls Cleaning .. .... .. .. .............. . 219
Convenience Closing ...... ... .. .............. .. 47
Open ing .. .... .. ............. .... . 47
Convenience key . .. ............. .... . 40
Indicator lights .. ..... ........... .. 87
Locking and unlocking vehicle ........ . 40
Start ing engine (START ENGINE STOP
button) ..... .. .. .. ........... .... . 86
Stopping the engine (START ENGINE
STOP button) .... ............... .. . 87
Switching on ignition ............ ... . 86
Convertible child safety seats . .. ... ... 185
Convertible locking retractor Activating . .... .. ............. .... 190
Deactivat ing . ... . ... ... .... ... .. .. 191
Using to secure a child safety seat 1.88, 190
Coolant system .... ................ . 238
Cooled cupholder ............... .... . 7 4
Cooling box in glove compartment . . . . . . 77
Cooling mode (climate control) ..... ... . 80
Cooling System Expansion tank ... ............. .... 239
Cornering light .. .. ............. .... . 51
Cruise control
Changing speed
Preselect speed .
. ................ .. 95
96
Switching off .. .. ............. .. .. . 96

302 Index
Electronic differential lock (EDL) ...... . 19 7
Warning/indicator lights ... .. ... . 15, 17
E lect ronic immobilize r ...... .. .. .... .. 38
Electronic power control (EPC) warn ing/ indicator light . .. .. .. .. 15
Elect ronic Stabilization Control (ESC) . .. 197
Hill descent assist ..... ... .. .. .... . 199
Offroad mode . ........... .... .... . 198
Warn ing/ indicator lights ... .. .. .. .. . . 15
E mergency braking . . . . . . . . . . . . . . . . . . . 90
Emergency flasher . . . . . . . . . . . . . . . . . . . 52
Warn ing/ indicato r lights ....... .. .. .. 16
Emergency key . .... ....... .. .. .... .. 36
Starting engine ............ .. .... .. 85
Emergency locking of the doors ..... ... . 4 2
Eme rgency operation
L uggage compartment lid .. .. .. .. .. . . 45
Emergency release Selector lever ............ .. .. .. .. . 128
Emergency starting ..... ... .. .. .... . 283
Emergency towing ............. .. ... 285
Emergency unlocking Ignition key . . . . . . . . . . . . . . . . . . . . . . . 38
E nergy management .. ... .. .. ... ... . 203
Eng ine
Compartment . .. ...... ... .. .. .. .. . 233
Coolant .. .... ........... .. .. .. .. . 238
D ata .. .. ... ............ .. .. .. .. . 291
H ood . ...... .. .. ..... ... .. .. .... . 23 1
Jump starting .. .. ..... ... .. .. .... . 105
Start-Stop-System . . . . . . . . . . . . . . . . . . 91
Starting . . . . . . . . . . . . . . . . . . . 83, 86, 98
Starting with jumper cables .. .. .... . 283
Stopping . . . . . . . . . . . . . . . . . . . 85, 87, 98
Engine compartment Safety instructions . . . . . . . . . . . . . . . . . 23 1
Working the engine compartment .... 231
E ng ine coolan t sys tem ...... .. .. .... . 238
Adding coolant . .. ..... ... .. .. .... . 239
Checking coolant leve l ... .. .. ... ... . 239
Malfunction . . . . . . . . . . . . . . . . . . . . . . . 30
Radiator fan ............. .. .. .. .. . 240
E ng ine coolan t temperature
Tempe ratu re ga uge .. ... .. .. .... .. .. 1 0
E ng ine hood
C losing .. .. ................ ... .. . 23 1
H ow to release the hood . .. .. .. .. .. . 23 1 E
ngine oi l .. .... .. ... .. ..... .... . .. 233
Adding ... .... .. .. ... ..... ... .. .. 236
Additives . ... .. .. .. ... ..... ... .. .. 236
Changi ng ..... .. ............. .... 237
Check oil level . .. ............. .... 236
Consumption .. .. ................ . 236
Level .... ... .. .. .. ... .. ... ..... .. . 34
Oil consumpt io n .. .......... ...... . 235
Oil g rades . .. .. . .............. .. .. 233
Press ure ma lfu nction ........... .. .. . 30
Senso r defec tive . . . . . . . . . . . . . . . . . . . . 34
S peci fication and viscosit y ........ . .. 233
E ngine speed limitation . . . . . . . . . . . . . . . 34
Environment Break-in per iod . .. ............. .... 205
Catalytic co nverter ................ . 206
Diesel pa rticula te filter .......... ... 206
Dispos ing of your veh icle battery . . . . . 245
Driv ing at high speeds .......... .. .. 20 7
D riv ing to minimize po llution and noise 20 7
F uel .. .. .. .. .. . .............. .. .. 226
Fuel economy .... .. ... ..... ... .. .. 207
Leaks under you r vehicle ..... ... .. .. 231
Letting the vehicle stand and warm up. 208
Proper disposal of drained brake fluid . 241
Proper disposal of drained eng ine cool-
ant .. ..... ... .. .. ... ........... . 239
Proper d isposal of drained eng ine
o il . . . . . . . . . . . . . . . . . . . . . . . . . 236,237
Recycling used eng ine oil ........ .. .. 236
Roof rack . .. .. .. ............. .. .. . 72
U nleaded fuel .... .. .... .... ... .. .. 222
What s hou ld I do with an o ld battery? . 245
E P C
refer to Elect ro nic powe r contro l ... .. . 15
ESC
refer to Electronic Stabilization Control
(ESC) ........ ... .. .............. .. 15
Ethy l alcohol (Fuel) ... ... ..... ... .. .. 223
E vent Data Recorde r (EDR ) ........ .... 19 7
Exhaust tail pipes Cleaning ...... .. .. ... ........... . 219
Expansion tank .... ... .. ..... ... .. .. 239
E xplanation of some technical te rms 210
Exterior mirrors Adjusting ..... .. .. ... ........... .. 57
Dimm ing .. ... ... .. .............. .. 58
Heating ..... .. .. .. ... .. ... ..... .. . 57

304 Index
Heated (upho lder . .... . ...... ... .. .. .... .. 74
Exterior m irrors ... .... ... .. .. .... .. 57
Rear window ............. .... ...... 81
Seats .. ...... ........... ........ .. 81
Washer fluid nozz les . . . . . . . . . . . . . . . . 54
H eating ...... .. .. ..... ... .. .. .... .. 79
H eavy clothing and safety belts . .. ..... 1 52
High beam . .. ............. .. .. .. ... . 52
War ning/ indicato r lights ... .. .. .. .. . . 17
High voltage warning labe l .. .. .... .. . 289
H ill descent assist . . . . . . . . . . . . . . . . . . . 199
Hill descent control ........ .. .. .... . 126
H omelink (remote con tro l)
H ood 135
Opening . .. .. .. .. .......... ... .. . 23 1
Release lever . ........... .. .. .... . 23 1
Ho rn . .. ...... ........... .... .... .. . 8
H ow are c hild restra int sys tem anchors re -
l ated to child sa fe ty ..... ... .. .. .... . 19 1
H ow many airbags does my vehicle have? 164
How often sho uld I check my t ire pres-
sures? .. .. ................. .. .... . 254
H ow sa fety belt pretensioners wo rk ... . 1 55
H ybr id d rive .. .. .. ...... .... ... .. .. .. 97
12 vo lt batteries .... ... .. .. .. .. .. . 105
Consumpt io n disp lay ...... .. .. .... . 10 4
E fficien t drive mode ....... .. .. .... . 10 2
E ne rgy flow d isplay .. ... .. .. .. .... . 103
EV mode ... ... .. ..... ... .. .. .... . 100
H igh vo ltage battery . . . . . . . . . . . 97, 105
High vo ltage system .......... .. .. .. 97
Operating modes ......... .... .... . 100
Power meter . . . . . . . . . . . . . . . . . . . . . . . 98
Start ing the veh icle ...... ... .. .. .... 98
Transport . . . . . . . . . . . . . . . . . . . . . . . . 106
H ydroplaning ............... .. .... . 258
I
Ignition
Switching on/off . ..... ... .. .. .... .. 83
I gnition key
E mergency unloc king . . . . . . . . . . . . . . . . 3 8
Ignition lock . . . . . . . . . . . . . . . . . . . . . . . . 83
M alfunct io n . . . . . . . . . . . . . . . . . . . 31, 3 5
Important things to do before driving .. 139 Improperly worn sa
fety belts . ... .. .. .. 155
Ind icator lig hts . . . . . . . . . . . . . . . . . . 14 , 99
Airbag system ................ .... 168
P ASS ENG ER A IR BAG OF F ....... .. .. 168
Infant seats .. .. .. .... .... ..... .. .. 184
Inflatab le spare tire . .. .. ..... ... .. .. 269
I n flating . ..... .. .. ... ..... ... .. .. 270
Installing child safety sea ts
S af ety be lts . . . . . . . . . . . . . . . . . . . . . . 188
Installing the upper tether strap on the
ancho rage .. .. .. .. ... .. .. ... ..... .. 195
Instrument cluster .... .. ..... ... .. .. . 98
Instrument ligh ting ............. .... . 51
Instruments and controls ........ .. .. . 10
General illustration . . . . . . . . . . . . . . . . . . 8
Interior lights
Dimming .. ..................... .. . 53
Front . .. .. .... ............... ..... 53
Rea r ..... .. .. .. .. ........... .... . 53
Interval wiping .... ... .. ..... .... . .. . 54
Rain sensor . . . . . . . . . . . . . . . . . . . . . . . . 54
J
Jump-star ting 283
Jumper cables ... .. ... .. .. ... ..... .. 284
Jump start ing .................. .... 105
K
Key ... ... .. .... .. .. ... .. ..... ... .. . 36
Battery replacement . . . . . . . . . . . . . . . . 3 7
Check light . . . . . . . . . . . . . . . . . . . . . . . . 3 7
Emergency key . . . . . . . . . . . . . . . . . . . . . 85
Ig nit io n/engine o n/off .............. . 83
Key replacement . . . . . . . . . . . . . . . . . . . 36
Master key with remote control . . . . . . . 36
Mechan ica l key . .. .... .... ..... .. .. . 37
Removing . .. .. .. ... .......... .... . 85
K ick-down
t iptro nic .. .. .. .. ... .. .. ... ..... .. 127
L
Lane Change Assistant
refer to Side assist . . . . . . . . . . . . . . . . . 116