2013 AUDI A6 low oil pressure

Instrument s and warnin g/indic ator ligh ts 13
compartment, stop the engine and let it
cool down. Always exercise extreme cau­
t ion when working under the hood
<=> page 219, Engine compartment
@ Tips
Ma lf u nctions or faults wi ll be identified ei­
ther with a red symbo l (pr iority 1 -Dan­
ger!) or with a yellow symbol (pr iority 2 -
Warn ing).
Overview
Some ind icator lights turn on briefly to check
the function of that system when you switch
the ignition on. These systems are ma rked
with a ,/ in the following tables. If one of
these indicator lights does not turn on, there is a malfunction in that system.
Red indicator lights
Red symbols indicate a prio rity malfunction -
D anger!
- Pull off the road.
- Stop the vehicle.
-Turn off the engine.
- Check the ma lf u nctioning system . Contact
your authorized Audi dea ler or a qualified
workshop for assistance.
USA mode ls:
Brake ma lf u nction,/
Qpage 15
Canada models:
Brake malfunction,/
Qpage 15
USA models:
- Electromechanical parking brake
____ ,
D
<=> page 16
Canada models:
Electromechanical parking brake
<=>page 16
Engine cooling system
<=>page 16
Engine oil pressure
<=>page 17
Engine oil level
Q page 18
Battery
<=>page 17
Safety belt
<=>page 17
Electromechanical steering ,/
<=>page 196
Electronic steering column lock
<=>page 18
Engine start system
<=>page 18
Speed warning system
<=>page 79
Adaptive cruise control*,/
<=>page84
Air suspension*
Qpage 18
Pedestrian warning*
Qpage 101
Yellow indicator lights
Yellow symbo ls indicate a p rior ity 2 malfunc­
t ion -W arning!
I
USA models: Safety systems
<=>page 19 .
El
Canada models: Safety systems
<=>page 19
II
Electronic Stab ilization Control
(ESC) ./
<=>page 19
I
Electronic Stabil ization Control
( E SC) ,/
<=>page 19
USA models:
tm
Anti-lock braking system (ABS)
defective ,/
Qpage20
I

Instrument s and warnin g/indic ator ligh ts 17
If the engine coolant level is correct, then the
radiator fan may be the cause of the malf unc­
tion .
• Coola nt te mpera tur e too high! Plea se let
e n gi ne r un with veh icle st atio nar y
If the indicator light turns on and the mes­
sage appears in trailer mode*, let the engine
r u n at id le for a few m inutes to cool down.
A WARNING ,_________
- If your vehicle should break down for
mechanical or other reasons, park at a
safe distance from moving traffic, turn off the engine and turn on the ha zard
warning lights
q page 42, Emergency
flasher.
- Never open the hood if you see or hear
steam or coolant escap ing from the en­
gine compartment -you risk being scald ­
ed . Wait until you can no longer see or
hear steam or coo la nt escaping.
- The engine compartment of any veh icle
is a dangerous area . Before you perform
any work in the engine compartment,
t ur n of the eng ine and allow it to cool.
Follow the warning sticke rs
q page 219,
Engine compartment .
(D Note
Do not continue driving if the. symbol
illuminates . There is a ma lf u nct ion in the
eng ine cooling system -you co uld damage
your engine.
0 Battery
This warning/indicator light detects a mal­
function in the generator or in the vehicle's
electrical system .
The. warning/ind icator light illuminates
when you switch on the ignition and must go
out after the engine has started .
• Alternator fault : Batt ery i s not being
c h arg ed
If the indicator light turns on and the mes­
sage appears, there is a malfunction in the
generator or veh icle electrical system .
Drive to your authorized A udi dealer or quali­
fied workshop immediate ly . Because the vehi ­
cle batt ery is discharging , turn off all unnec­
essary electrical equipment such as the rad io.
Seek professiona l assistance if the ba ttery
charge level is too low.
(•) Low b atte ry : b atte ry will be cha rged
w hil e driv ing
If the indica tor ligh t turns on and the mes­
sage appears, there may be limited starting
ab ility .
If this message t urns off afte r a lit tle while,
the battery charged enough while driving.
If the message does not turn off, have your
autho rized Aud i dea ler o r qualified workshop
cor rect the ma lfu nction .
,{,_ Safety belts
This warning/indicator light reminds you to
put on your safety belt.
The . warn ing/ indicator light illum inates
when the ignition is switched on to remind
the d river and any front passenger to put on
the safety be lt. Addit ionally, an aco ustic warn­
i ng (gong) wi ll also so und .
For more Informat io n
q page 136, ~ Safety
belt warning light.
't::7: Engine oil pressure malfunction
The red engine oil pressure warning symbol
requires immediate service or repair. Driving
with a low-oil-pressure indication is likely to
inflict severe damage to the engine .
• Switch off engine and ch eck o il leve l
If the indicator light tu rn s on and the mes­
sage appears, the oi l pressure is too low .
.. Pull off the road .
.. Stop the vehicle .
.. Turn off the engine.

18 Instruments and warning/indicator lights
• Check the engine oil level¢ page 230.
• If the engine oil leve l is too low, add engine
o il ¢
page 23 0. M ake sure that the oil p res ­
s ur e warning symbol. appea rs no longe r
i n t he d is pl ay before you sta rt d rivi ng a ga in.
• If the engi ne oil leve l is cor rect and the indi ­
cator lig ht st ill tur ns on, tur n the eng ine off
and do not co nti nu e dr iving. Se ek pr of essio­
n al assista nce.
(D Tips
- The engine oil pressure symbol. is
not an indicator for a low engine oil lev ­
el. Do not rely on it. Instead, check the
oil level in your engine at regular inter­
vals, preferably each time you refuel,
and always before going on a long trip.
- The yellow oil level warning indication
l!I requires oil refill or workshop serv­
ice without delay. Do not wait until the
red oil pressure warning. starts to
flash before you respond to the low oil level warning
1!11. By then, your engine
may already have suffered serious dam­
age.
!::;. , Engine oil level
• WARNING: Please add oil immediately
When the symbo l and the dr iver message ap­
pea r, the oil has to be re plenished r igh t now
¢pag e 227.
If the indicator lig ht and the message appear,
add e ngine oil immediate ly ¢
page 230 .
II Add oil , max. x qt (l). You may continue
driving
Wh en t he symbo l an d t he dr ive r message ap­
pea r, add the amo unt of o il ap pear in g i n the
di sp lay at the ne xt opport unity ¢
page 22 7.
@-Steering column lock
• Do not drive vehicle: Steering defective
If th e indicator lig ht t urns on and the mes­
sage ap pears, the re is an elect ronic steer ing co
lumn lo ck mal func tion. You canno t sw itch
t h e ignit io n on .
D o
not tow yo ur vehicle beca us e it ca nnot b e
s tee re d . S ee k profession al assi sta nce .
ell Steering lock: system fault. Please con­
tact dealer
If the indicato r light turns on and the mes­
sage appea rs , t here is an e lectronic stee ring
co lumn lock malfunc tion.
Drive to y our auth orized A udi dealer immed i­
ate ly to have the ma lfu nction corrected .
A WARNING
-Yo u r ve hicle m ust no t be tow ed in t he
ev ent of a malfu nction in th e ele ctr oni c
stee ring colum n lock be cau se it cann ot be
s teere d due to the l ock ed st eeri ng. If it is
to we d wi th t he steer in g lock ed , there is
the r is k of an accident .
©-Engine start system
• Engine start system fault. Please con­
tact dealer
If the indic ator ligh t turn s on an d the m es­
sage a ppe ars, do
not swi tch the ig nition o ff
because you may not be a ble to sw itch it on
again .
Dr ive to y our au thori zed A udi deal er i mme di­
a te ly to have the m alfunction correc te d .
1111 Engine start system fault . Please con­
tact dealer
If th e indicato r ligh t turns on and the mes ­
sag e appea rs, there is a malf unct ion in th e en­
gine sta rt system.
Drive to your author ized Audi dealer immed i­
ately to have the malfu nction correc ted .
0 Air suspension
Applies to veh icles: w it h air suspens io n
• Air suspension: system fault. Can contin-
ue slowly with max . 35 mph.
ll>

72 On the road
By pressing the I STAR T ENGINE ST OP I button
without depressing the brake peda l, the igni­
tion is on and switched
off by pressing it
again .
After a cold engine is started, the re may be a
brief period of increased noise because oil
pressure must first bu ild up in the hydraulic
va lve adjusters. This is normal and not a cause
f or concern.
If the engine should not start immediately,
the starting process is automatically stopped
after a short time . Repeat starting procedure.
Start-Stop-S ystem *:
When you stop and the Start-Stop-System*
turns
off the engine, the ignition still remains
switched on.
- If you press the I STAR T ENGINE STOPI but­
ton now, the ignition wi ll be switched
off.
T he engine will not start ¢ page 78 .
-Make sure tha t th e ig nit ion is swi tched off
before ex iting the vehicle.
Sw itching the ignition /engine off
automat icall y*
The fo llow ing applies to vehicles with Start­
Stop -System*: to prevent the battery from
draining, the ignition and the engine wi ll
switch
off automatically under the following
conditions :
- T he vehicle has already been dr iven.
- T he d river's door is opened.
- T he driver's seat be lt is removed.
- The brake pedal is not pressed down .
- The veh icle is sta tionary.
In t his case, the activated low beam w ill be re­
p laced by the side marker lights. The side
marker lights will switch
off after a certain pe­
riod of time or when you lock the vehicle.
Driver m essage in the in strument clu ster
di spl ay
P ress b rake pedal to start engine
This message appears i f you press the
I S TAR T ENGINE STOP ! button to start the en­
gine and do not depress the brake peda l. The engine can only be started if the brake pedal
is depressed.
!I C
o nveni ence key: I s ke y not in th e vehi ­
cle?
T h is message appears along with the !I sym­
bol if the master key is removed from the ve ­
hicle with the eng ine runn ing.
It is in tended
to rem ind yo u (e.g . when chang ing dr ivers)
not to continue the journey without the mas­
ter key.
If the master key is no longe r in t he ve hicl e,
yo u canno t swi tch on the igni tion after stop­
ping the engine and you also cannot start the
engine again. Moreover, you cannot lock the
vehicle from the outside with the key.
Tu rn off ignition before leav ing car
This message appears if the drive r's door is
opened wh ile the ign ition is switched on. Al­
ways swi tch off the ignit io n if you a re leav ing
the vehi cle. See also
¢ page 72 .
Shift to P, otherwi se vehicle can roll away.
Doors do not lock if lever is not in P .
This message appears for safety reasons
along with an audible warning tone if the P
selector lever position is not engaged when
stopp ing the eng ine with t he
I S TAR T ENGI NE ST OP I but ton. Select the P se­
l ector lever posi tion. Otherwise the vehicle
could roll and it cannot be locked.
Ke y not r ecogni sed . Hold back of ke y again st
marked ar ea . See owner' s manual.
If the indicato r light turns on and this mes­
sage appears, there is a malfunct ion
Q page 74.
Turn off ignition b efore leaving car
This message appears if the driver's door is
opened wh ile the ignition is switched on. Al­
ways switch off the ignit ion if you a re leav ing
the vehicle. See also
¢ page 72 .
Shift to P and turn off ignition before leav-
ing car, otherwise vehicle can roll awa y
This message appears if the drive r's door is
opened while the ignition is switched on and
jll,,

210 Cleaning and protec tio n
sponges to prevent scratches. It is best
to use soapy water .
- You should remove debris (such as in­
sects) from the headlight lenses on a
regular basis, for example when refuel­
ing your vehicle. Never clean the head­
lights w ith a dry cloth or sponge. Use a
wet cloth or sponge. It is best to use
soapy water .
@) For the sake of the environment
Only wash the vehicle in facilit ies specially
designed for that purpose. Th is w ill reduce
the risk of d irty water contaminated w ith
oil from entering the sewer system . In
some areas, wash ing vehicles outs ide of
these facilities is prohib ited.
Washing your vehicle with a power
washer
Cleaning the exterior of your car with a high­
pressure power washer is safe as long as you
observe a few simple rules.
• Before using the power w asher , make sure
yo u have read and understood the WARN­
INGS
q A in General information on
page 208.
• Always fo llow the operating instructions for
the power washer.
• Make sure that the jet o n the spray hose
produces a "fan shaped spray" .
• Do
not hold the spray nozzle too close to
soft materia ls .
Keep a d istance from soft materials such as
rubber hoses or insulat ing mater ial as we ll as
sensors and camera lenses.
When cleaning t he vehicle wit h a power wash­
er
always fo llow the operating instructions .
This applies particularly to the operating pres­
sure and the spraying distance . Do not po int
the spray direc tly at the sea ls around the s ide
windows, aro und t he doors, on the re ar lid or
on the sunroof* . Likew ise, do not point it di­
rectly at tires, r ubber hoses, ins ulation mate­
rial or sensors
q page 211. Hold the spray nozzle at least 1.3 ft (0.4 m) away from the
vehicle.
Do no t use a high-pressu re power was her to
remove snow and ice .
Do not use a jet which sprays water in a d irect
st ream o r one that has a rotating je t.
Water temperature should not exceed 140 °F
(60 °() .
A WARNING ,..__
Neve r wash t ires with a jet that sprays wa­
ter in a direct stream. This could cause in­
v is ible d amage to the t ires and weaken
them, even if the spray is from a relative ly
l ong distance and for a short time . Dam ­
aged and wea kened tires can fail a nd cause
accidents and personal in jury.
(D Note
To avoid damaging yo ur vehicle, a lw ays
make sure tha t the re is sufficien t distance
between the spray head and soft materia ls
li ke rubber hoses, plast ic parts and sound ­
deaden ing mater ia ls as well as sensors
and camera lenses. Never a im the spray
head at the same point fo r a long time.
This also app lies to cleaning headlights
and paint ed bumpers . Remembe r: t he
closer the no zzle is to the surfa ce of the
m at erial , the gre ater t he s tress on the ma ­
terial.
Caring for vehicles with matte finish
paint
Applies to vehicles: wit h matte finish paint
Vehicles with matte finish paint require spe ­
cial care due to the characteristics of the
paint.
Washing by hand
T o avoid damaging the pain t when was hing,
fi rst remove dust and la rge particles from
yo ur vehicle . Insects, grease spots and finger­
prints are best removed with a
special cleaner
for matte finish pa int .
1111>

temperatures stay below freezing point for l ong periods.
Detergent add itives in the o il w il l make fresh
oil look dark after the eng ine has been run ­
ning fo r a short time . This is norma l and is not
a reason to change the oi l more often than
recommended.
D am ag e or m alfun ction s due to lack of
ma intenanc e
It is essential that you change your oil at the
r ecommended inte rva ls using only engine o il
t hat complies wi th A udi oi l standard
VW 502 00 . Your Limited New Vehicle War ­
ranty does not cover damage or malfunctions
d ue to fa ilure to fo llow recommended mainte­
nance and use requ irements as set forth in
the Audi Owner's Manua l and Warranty
&
Maintenance book let . Your dea ler will have to
deny warranty coverage u nless you present to
the dea ler p roof in the fo rm of Serv ice or Re­
pa ir Orde rs that all s chedu led maintenance
wa s pe rformed in a t imely manner .
Engine oil consumption
The engine in your vehicle dep ends on an ade­
quate amount of oil to lubricate and cool all
of its moving parts.
In o rder to provide effective lubrication and
cool ing of i nternal engine components, a ll in­
ternal comb ustion eng ines consume a cert ain
amo unt of o il. Oil cons umption varies from
engine to engine and may change significantly
over the life of the engine. Typ ica lly, engines
with a specified break-in per iod (see
¢
page 199) consume more oil during the
break-in per iod than they consume after oil
consumption has stabilized .
Under norma l conditions, the rate of oil con ­
sumpt ion depends on the quality and viscosity
of the oil, the RPM (revo lutions per m inute) at
which the engine is operated, the amb ient
temperature and road condit ions. Furthe r fac­
tors ar e the amount of o il d ilution from wate r
condensation or fuel residue and the ox ida­
tion level of the oi l. As any engine is s ubje ct to
Checkin g and fillin g 229
wear as m ileage builds up, the oil consump ­
tion may increase over time until replacement
of worn components may become necessary.
Wi th a ll these variab les coming into p lay, no
standard rate of oil consumpt ion can be es ­
tablished or specified. There is no alternative
to regular and frequent check ing of the o il lev ­
el, see
Note .
If the yellow engine oil leve l warning symbo l
in the instrument cluster
II li ghts up, you
sho uld check the oil leve l as soon as possib le
¢
page 230. Top off the oil at your earliest
convenience ¢
page 230.
A WARNING
Before you check anythi ng i n the engine
com partment, always read a nd heed all
WARNINGS¢ .&.
in Working in th e engine
c ompartment on page 225.
(D Note
D riving w ith an insufficient o il level is like­
ly to cause sever e damage to the engine .
(D Tips
- The oil pressure warning display. is
not an indicator of the oil le vel. Do not
rely on it . Instead, check the oil level in
your engine at regu lar intervals, pref­
erably ea ch time you refuel, and always
before going on a long trip .
-If you have the impression yo ur engi ne
c ons umes ex ce ss ive amoun ts of o il, we
recommend that you consul t your Au di
de aler to have the cause of your concern
properly diagnosed . Keep in mind that
the accurate meas urement of o il con ­
sumption requires great care and may
take some t ime. Y our Audi dea ler has in­
struct ions about how to measure oil con­
sumption accurately.
-
•
•

the level may be slightly above the "max"
marking .
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration ¢ page 22 7.
To obtain an accurate reading, the engine must be switched
off.
The expansion tank in your 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 16will
illuminate until you add coolant and the level
has been restored to normal. Even though
there is an electric coolant level sensor , we
still recommend you check the coolant level
from time to time.
Coolant loss
Coolant loss may indicate a leak in the cooling
system. In the event of coolant loss, the cool­
ing system should be inspected immediately
by your authorized Audi dealer.
It is not
enough merely to add coolant.
In a
sealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheating.
& WARNING
The cooling system is under pressure and
can get very hot. Reduce the risk of scald­
ing from hot coolant by following these
steps.
- Turn
off the engine and allow it to cool
down.
- Protect your face, hands and arms from
escaping fluid and steam by covering the
cap with a large, thick rag.
- Turn the cap slowly and very carefully in
a counter-clockwise direction while ap­
plying light, downward pressure on the
top of the cap.
- To avoid being burned, do not spill anti­ freeze or coolant on the exhaust system or hot engine parts . Under certain condi­
tions, the ethylene glycol in engine cool ­
ant can catch fire .
Checking and filling 233
@ Note
Do not add any type of radiator leak seal­
ant to your vehicle's engine coolant. Add­
ing radiator repair fluid may adversely af­
fect the function and performance of your
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 all WARN­
INGS ¢ & in Working in the engine compart ­
ment on page 225 .
.,. Turn
off the engine .
.,. let the engine cool down.
.,. Place a thick rag over the coolant expansion
tank ¢ fig .
187 and carefully twist the cap
counter-clockwise ¢&_ .
.,. Add coolant.
.,. Twist the cap on again tightly.
Replacement engine coolant must conform to
exact specifications ¢ page
2 32, Coolant. We
recommend using only coolant additive G12+
+, G13 or in an emergency G12+. Do
not use a
different additive. In an emergency use plain
water until you can get the correct additive
and can restore the correct ratio. This should
be done as soon as possible.
If you have lost a considerable amount of
coolant, then you should add cold antifreeze
and cold water only when the engine is cold.
Always use new engine coolant when refilling.
Do not fill coolant above the "MAX" mark. Ex­
cess coolant will be forced out through the pressure relief valve in the cap when the en­
gine becomes hot.
A WARNING
- The cooling system is under pressure and
can get very hot. Reduce the risk of
II-
•
•

@ Tips
Where snow chains are mandatory oncer­
tain roads, this normally also applies to
veh icles with all-wheel dr ive.
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of whee l bolts is matched to the
factory insta lled rims . If different rims are fit­
ted, the correct wheel bolts with the right
length and correctly shaped bolt heads must
be used. This ensures that wheels are f itted
securely and that the brake system functions
correctly .
In certain circumstances, you may not use
wheel bolts from a different vehicle -even if it
is the same model
<=> page 287.
.&_ WARNING
Improperly tightened or maintained wheel
bolts can becom e loose caus ing loss of
cont ro l, a co llision and serious persona l in­
Jury .
- Always keep the wheel bolts and the
threads in the wheel hubs clea n so the
w heel bolts can t urn easily and be prop ­
erly t ightened .
- Never grease or oil the wheel bolts and
the threads in the wheel hubs. They can
become loose while d riving if greased or
oi led, even if tightened to the specif ied
torque.
- Only use whee l bolts that belong to the
rim being installed .
- Never use different whee ls bolts on your
vehicle.
- Always maintain the co rrect tighten ing
torq ue for the wheel bo lts to reduce the
risk of a wheel loss . If the tightening tor­
que of the wheel bolts is too low, they
can loosen and come out when the vehi­
cle is moving. If the tightening torque is
too high, the whee l bolts and threads
Tire s an d wheel s 257
can be damaged and the whee l can be­
come loose.
(D Note
The specified torque for the whee l bolts is
90 ft lb (120 Nm) with a tolerance of± 7,4
ft lb(± 10 Nm) . Torq ue whee l bolts diago­
nally. After changing a whee l, the torq ue
must be checked as soon as possible with a
torque wrench -preferably by an author­
i zed Audi dealer or qualified workshop.
Low aspect ratio tires
You r Aud i is facto ry-equ ipped w it h low aspect
ra tio tires. These tires have been tho ro ughly
tested and been se lec ted spe cifically for you r
model for their superb perfo rmance, road fee l
and handling under a variety of driving condi­
tions. Ask your authorized Audi dealer for
more details .
T he low aspect ratio of these t ires is ind icated
by a numera l of
55 or le ss in the tire's s ize
designation. The numera l represents the ratio
of the t ire's sidewa ll height in relation to its
tread width expressed in percentage. Conven­
tiona l tires have a he ight/w idth rat io of 60 or
more .
The performance of low-aspect -ra tio tire s is
particularly sens it iv e to improper inflation
pressure. It is therefore important that low
aspect ratio t ires are inflated to the specified
pre ssure and that the inflation pressur e is
regularly che cked and maintain ed. Tire pre s­
s ures should be checked at least on ce a
m onth and alwa ys before a long trip
¢ page 246, Checking tire pressure .
What you can do to avoid tire and rim
damage
Low aspect ratio tires can be damage d mo re
easily by impact w ith potholes, curbs, g ull ies
or ridges on t he road, partic ularly if the tire is
u nderinflated.
Ill>-
•
•