check engine AUDI A8 2018 Owner's Guide

-When connecting jumper cables, make sure
that they cannot get ca ught in any mov ing
parts in the engine compartment.
- Before you check anything in the engine
compartment, a lways read and heed a ll
WARNINGS
¢ page 272.
(D Note
Impro per hook-u p of jum per cables can ru in
the generato r.
- Always connect P OSITIVE( +) to POSITIV E
( + ), and NEGATIVE( -) to NEGATIVE( -)
g round post of the battery manager contro l
unit.
- Check that a ll sc rew p lugs on the battery
cells are sc rewed in firmly . If not, t ighten
pl ugs p rior to connect ing clamp on negative
b atte ry te rmi nal.
- Please note t hat the procedure fo r con nect­
i ng a jumper cab le as desc ribed above ap­
p lie s specifica lly to the case of yo ur vehicle
b eing ju mp starte d. When you are g iv ing a
ju mp s tart to ano ther vehicle, do
not con­
n ect th e neg ative( -) ca b le to the neg ative
(-) t ermin al on t he disch arged batte ry @
¢ fig . 290. Instead, securely connect the
negat ive(- ) cab le to either a solid metal
component that is f irm ly bolted to the en­
gine block o r to the engine bloc k itself. If
the battery that is be ing c ha rged does not
vent to the outs ide, escap ing batte ry gas
could ignite and ex plod e!
Towing with a tow truck
General hints
Yo ur Audi requires special h andling for towing .
The follow ing informa tion is to be used by com­
mercia l tow tr uck o pera tors who know how to op ­
e rat e the ir equip men t sa fely.
- Never tow your Audi. Towing will cause dam­
age to the engine and transmission.
- Never wrap the safety chains or winch cables
~ around the brake lines. ....
~ -To prevent unnecessary damage, your Audi N
8 must be transported with a flatbed truck. 0 :c '<I"
Emergency situations
-To load the vehicle on to the flatbed, use the
towing loop found in the vehicle tools and at­
tach to the front or rear anchorage
¢ page 329 and c> page 330.
A WARNING
A veh icle being towed is not safe for passen­
ge rs. Neve r allow a nyo ne to ride in a vehicl e
b eing towed, fo r any reason.
Front towing loop
Fi g. 291 Fron t bu mpe r: removing t he cap
Fig. 292 Fron t bu mpe r: insta llin g the tow ing loop
The thread for the towing loop is on the right
s ide of the front bumper beh ind a cap.
.,. Remove the towing loo p from the vehicle too l
kit.
.,. Press the cap inward with brief, forceful pres­
sure
c> fig. 291 . The cap will loosen from the
bumper.
.,. T igh ten the tow ing loop in the threaded open ­
ing until it stops
c> fig. 292 and t hen tighten it
w ith a wheel w re nc h .
.,. Afte r usi ng, p lace the tow ing loop b ack in the
veh icle tool kit.
IJJ>-
329

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Raising the vehicle
Lifting with workshop hoist and with floor
jack
The vehicle may only be lift ed at the lifting
points illus tr at ed.
Fig. 296 Fro nt lift in g poin t
Fig. 29 7 Rear lift ing poin t
.,. Read and heed WARNING c::> &, .
.. Activate the veh icle ja ck mode in the MMI :
I CARI funct ion button> Car systems control
button >
Servicing & checks > Air susp.: jack
mode > On .
.. Loca te lift ing po ints c::> fig . 296 and c::>fig . 297 .
.. Adju st lifting arms of wo rkshop ho ist o r floo r
ja ck t o ma tch vehicle li fting poin ts.
.. In se rt a rubb er pa d between the floor j ack/
wor kshop ho ist and the lifting points .
T he vehicle ja ck mode m ust be a ct iv a te d so th at
the au tomatic a djustment of the Ad aptive Air
Suspension does not m ake it more diffic ult to
raise the ve hicle wit h the floor jack.
If you must lift your vehicle with a floor jack to
work underneath , be sure the vehicle is safely
supported on stands intended for this purpose .
Emergency situations
Front lifting point
The lifting poi nt is locate d on the floor p an rein ­
f o rcement about at the same level as the ja ck
mounting point
c::> fig . 296 . Do not lift the vehi­
cle at the vertical sill reinforcement .
Rear lifting point
T he lifting p oin t i s lo cate d on the ve rtic al rei n­
f o rceme nt o f th e lower s ill for the on- bo ar d jac k
c::>fig. 297 .
Lifting with vehicle jack
Refer to c::> pag e 315 .
A WARNING
- To reduce the r is k of se rious inju ry and veh i­
cle dama ge.
- Always lift the vehicle o nly at the specia l
wor kshop h oist a nd f loor jack lift points
il­
l ustrated c::> fig. 296 and c::> fig. 297.
- Failure to lift t he ve hicle at these points
could cause the veh icle to tilt o r fall from
a lift i f there is a change in vehicle weight
dist ribution and balance . This might hap­
pen, fo r example, when h eavy compo­
nents such as the eng ine block o r trans­
missi on are re moved .
- Whe n re mov ing heavy comp onents like
these, an ch or veh icle t o hois t or ad d co rre­
spon ding weig hts t o m aintai n the cen ter of
g ravi ty . Ot herw ise, the vehicle mig ht tilt or
slip off t he hoist, caus ing se rio us pe rsonal
i njur y .
(D Note
- Be aw are of the fo llow ing po ints b efor e lift­
ing the vehicle:
-The vehicle should never be lifted or
jacked up from underneath the engine oil
pan, the transmission housing, the front
or rear axle or the body side members.
This could lead to serious damage .
- To avoid damage to the underbody or
chassis frame, a rubber pad must be in­
serted between the floor jack and the lift
points .
.,.
331

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today's automobiles, have steadily reduced the
scope of maintenance and repairs which can be
carried out by veh icle owners.
Al so , sa fet y a nd
en vironmental
concerns place very strict limits
on the nature of repairs and adjustments to en­
g ine and transm ission parts wh ich a n owner can
perform .
Maintenance, adjustments and repairs usually re­
qu ire special tools, test ing devices and other
equ ipment available to specially trained work ­
shop personnel in order to assure proper per­
formance, re liability a nd safety of the veh icle and
its many systems .
Improper maintenance, adjustments and repairs
can impair the operation and reliab il ity of your
ve hicle and even void your veh icle warranty .
Therefo re, proof of se rvicing in accordance w ith
the ma intenance schedule may be a condition fo r
upho ld ing a possib le warranty claim made within
the warranty period.
Above all , ope rational safety can be adversely af­
fected, creating unnecessa ry risks fo r yo u and
your passengers.
I f in do ubt about any servicing, have it done by
your author ized Audi dealer or any other prope rly
eq uipped and qua lified workshop. We strongly
u rge yo u to g ive your author ized Audi dealer the
opportunity to perform a ll scheduled mainte ­
nance and necessary repairs. Your dealer has the
facilities, original parts and trained specialists to keep your veh icle running properly .
Pe rforming limit ed maint enanc e yourself
The fo llowing pages describe a limited number of
procedures which can be performed on your ve hi­
cle with ordinary tools, should the need arise and
trained personnel be unavailable. Before per­
forming any of these procedures, always thor­
oug hly read a ll of the app licable text and careful­
ly follow the instructions g iven . Always rigorously
observe the
W ARNINGS prov ided .
Before you check an ything in the eng ine com ­
partment , alw ays read and he ed all WARNINGS
c:> &. and c:> &. in Working in the engine compart­
ment on page 2
72 .
Con sum er In form ation
A WARNING
--
- Ser ious personal injury may occur as a result
of improperly performed maintenance, ad ­
justments or repairs .
- Always be extremely careful when work ing
on the vehicle . Always follow commonly ac­
cepted safety practices and general com­ mon sense. Never risk pe rsonal inj ury.
- Do not attempt any of the maintenance,
checks or repairs described on the following pages if you are not fu lly famil iar with these
or other proced ures with respec t to the ve­
h icle, or are uncerta in how to pro ceed.
- Do not do any work without the proper tools
and eq uipment. Have the necess ary wo rk
done by your authorized Audi dealer or an­
other proper ly equipped and qualified work­
shop.
- The engine compartment of any motor vehi ­
cle is a potentially hazardous area . Never
reach into the area around or touch the radi­
ator fan.
It is temperature controlled and
can switch on suddenly - even when the en­
g ine is off . The radiator fan switches on au­
tomatically when the coolant reaches a cer­
tain tempe rature and will cont inue to run
until the coolant temperature d rops.
- Always sw itch off the ignition before anyone
gets under the vehicle.
- Always support your veh icle with safety
stands if it is necessary to work underneath
the vehicle. The jack suppl ied with the veh i­
cle is no t adequate for this pu rpose and
could collapse caus ing serious personal in­
jury.
- If you must wor k unde rne ath the vehicle
with the wheels on the 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 transmiss ion) is in
"P"
(Park position) and the pa rk brake is ap­
plied.
337

Consum er Info rmation
@ For the sake of the environment
- Changing the engine settings wi ll adverse ly
affect emission leve ls. Th is is detrimental to
the env ironment and increases fuel con ­
sumption.
- A lways observe environmenta l regu lations
when disposing of o ld engine o il, used brake
flu id, d irty engine coolant, spent batteries
or worn out tires.
- Undeployed airbag modules and pretension­
ers might be classif ied as Perchlorate Mate­
rial -spec ia l handl ing may apply, see
www.dtsc.ca.gov/hazardouswaste/ perch lorate. Whe n the vehicle o r parts of
the rest raint system including airbag mo d­
ul es safety bel ts w it h pre tensioners are
scrapped, all applicable laws and regula ­
tions must be observed. Yo ur autho rized
A udi dealer is familiar with these require ­
ments and we recommend that you have
your dealer perform this service for you.
Accessories and technical changes
Additional accessories and parts
replacement
Always consult on authorized Audi dealer before
purchasing accessories.
Audi ve hicles that are constructed with advanced
materials like Steel/Alum inum (Hybrid construc­
tion), Aluminum (Aud i Space Frame), and/or A lu­
minum/Carbon F iber (Ultra Advanced L ight
We ight Materials) are as un ique as the ir drivers .
Therefo re, the ava ilability of ce rtain parts needed
for repai r, restorat ion, or reco nstr uction w ill be
rest ric ted, or p arts w ill be unav ailable, if the ve ­
h icl e is not repa ired a t an a uth o rized Aud i colli­
sion repair facili ty . This in cl udes but is not limit ­
ed to structura l parts w hic h require specia lized
training and equipment to restore their crash ­
worthiness back to the orig inal NHTSA and IIHS
performance.
Your vehicle incorporates the latest safety design
features ensuring a hig h standard of active and
passive safety.
338
This sa fety could be com promised by non -ap ­
proved changes to the vehicle . For t his reason, if
parts have to be rep laced, p lease observe the fol ­
l owing points when install ing additional accesso ­
ries:
Approved Audi accesso ries and gen uine A udi
parts are avai lab le from a uthorized Aud i dea le rs .
These dea le rs al so have t he necessa ry fa cilit ies,
tools and trained specialists to install the parts
and accessories properly .
A WARNING
Using the wrong spare parts or using non -ap ­
p roved accessories can cause damage to the
vehicle and serious personal i njury.
- Use on ly accessories express ly approved by
Aud i and genuine Audi spare parts
- These parts and accessor ies have been spe­
cially des igned to be used on your vehicle.
- Do not use license p late brac kets in the
front area that are d if f erent from the one
installed at the factory, or add additional li­
cense plate brackets.
- Never install accessor ies such as telephone
cradles or beverage holders on airbag covers
or w ith in the airbag dep loyment zones. Do­
ing so will increase the risk of injury if a ir­
bags are triggered in an accident!
- Before you check anyth ing in the eng ine
compa rtme nt, always read a nd heed all
WARN INGS
~page 272.
@ Note
-If items other than genu ine A udi spare
parts, add-on equipment and accessory
i t ems are used o r if repa ir wor k is not per­
formed according to specified methods, th is
c an resul t in seve re damage to you r vehi­
cl e's eng ine a nd body ( such as cor rosion)
and adve rsely aff ec t your ve hicle's war ran ty.
- Th e innovat ive alum inum con cep t of yo ur
Audi AB means t hat all se rvi cing, re pairs o r
ot her wor k on t he ve hicle body mus t be ca r­
ried out exclus ively by an Aud i workshop .
- I f emer gency rep air s mus t be pe rformed
elsew here, have the vehicle exam ined by an
authorized A udi dealer as soon as possib le .
.,,.

Index
Emergency operation
Fr ont passenger 's door . . . . . . . . . . . . . . . . 32
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . 271
Luggage compartment lid . . . . . . . . . . . . . . 36
Panoram a glass roof . . . . . . . . . . . . . . . . . . 40
Sliding/tilting sunroof . . . . . . . . . . . . . . . . . 39
Sunshade (roof) . . . . . . . . . . . . . . . . . . . . . . 40
E mergency re lease
Parking lock . . . . . . . . . . . . . . . . . . . . . . . . . 88
Emergency starting . . . . . . . . . . . . . . . . . . . 327
Emissions control system . . . . . . . . . . . . . . 272
Energy consumers (efficiency program) . . . . 13
Energy management . . . . . . . . . . . . . . . . . . 131
E ngine
Start/Stop system . . . . . . . . . . . . . . . . . . . . 78
Starting/stopping . . . . . . . . . . . . . . . . . . . . 76
Starting with jumper cables . . . . . . . . . . . 327
E ngine compartment . . . . . . . . . . . . . . . . . . 272
Opening/closing the hood . . . . . . . . . . . . . 273
Engine oil
Adding . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Checking oil level . . . . . . . . . . . . . . . . . . . . 275
Con sumption . . . . . . . . . . . . . . . . . . . . . . . 275
Engine sound . . . . . . . . . . . . . . . . . . . . . . . . 111
Entering a destination . . . . . . . . . . . . . 166, 170
Entering an address . . . . . . . . . . . . . . . . . . 166
From the map . . . . . . . . . . . . . . . . . . . . . . 167
La st destinations . . . . . . . . . . . . . . . . . . . . 169
Starting point (presentation mode) . . . . . 173
Entering letters (speller) . . . . . . . . . . . . . . . 138
E ntering numbers/symbols (speller) . . . . . . 138
Entry assistance . . . . . . . . . . . . . . . . . . . . 58, 76
Environment Environmentally-friendly/ economical driv -
ing ..... ... .. .. ................ ... .. 74
Fueling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Proper disposal of drained engine o il . . . . 277
Unleaded fu el . . . . . . . . . . . . . . . . . . . . . . . 268
EPC (engine control) . . . . . . . . . . . . . . . . . . . . 23
ESN
refer to Serial number (radio) ... .... .. .
Event Data Recorder (EDR) ........ .. .. .
E xterior lighting 179
133 43
Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . . 47
344
F
Factory default settings
Multi Media Interface . . . . . . . . . . . . . . . . 207
R5E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Fader(sound) ... .. .. .. ............. .. 206
Fastening Booster seats . . . . . . . . . . . . . . . . . . . . . . . 257
Convertible child safety seats . . . . . . . . . . 256
Infant seats . . . . . . . . . . . . . . . . . . . . . . . . 255
Fast forwarding/rewinding (audio/video
file) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Fast forwarding (audio/video file) . . . . . . . . 191
Favorite (navigation) . . . . . . . . . . . . . . 169, 173
File format (media) . . . . . . . . . . . . . . . . . . . 187
Floor mats.. .. .. .. .. .. ............. .. 213
Folding table . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Free text search
T elephone. . . . . . . . . . . . . . . . . . . . . . . . . . 152
Freeze protection Coolant additive . . . . . . . . . . . . . . . . . . . . . 277
Front airbags
Description . . . . . . . . . . . . . . . . . . . . . . . . . 231
Frontal collisions and the laws of physics . . 220
Front center armrest . . . . . . . . . . . . . . . . . . . 55
Front passenger seat adjustment . . . . . . . . . 58
Front seats
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Child restraints in the front seat . . . . . . . . 228
also refer to Seats . . . . . . . . . . . . . . . . . . . . 54
Fuel Additives. . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Blended gasoline . . . . . . . . . . . . . . . . . . . . 268
Current consumpt ion . . . . . . . . . . . . . . . . . . 12
Fuel filler neck . . . . . . . . . . . . . . . . . . . . . . 269
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 9, 10
Fuel tank capacity . . . . . . . . . . . . . . . . . . . 334
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Gasoline additives . . . . . . . . . . . . . . . . . . . 269
Octane rating . . . . . . . . . . . . . . . . . . . . . . . 268
Recommendation . . . . . . . . . . . . . . . . . . . . 268
Saving fuel ...... .. .. ............ 74, 111
Fueling Fuel filler door . . . . . . . . . . . . . . . . . . . . . . 270
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Fuel tank capacity . . . . . . . . . . . . . . . . . . . 334