check engine AUDI A6 2018 Owner's Guide

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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. 212 Fro nt lift in g poin t
Fig. 213 Re ar lift ing poin t
.,. Read and heed WARNING c::> &, .
.. Activate the veh icle ja ck mode* in the M MI:
I CAR I funct ion button> (Car) * systems contro l
bu tton >
Servicing & checks > Air susp.: jack
mode > On .
.. Loca te lift ing po ints c::> fig . 212 and c::>fig . 213 .
.. Adju st lifting arms of wo rkshop hoist o r floo r
jack t o match vehicle li fting poin ts.
.. In se rt a rubb er pa d between the floor jack/
wor kshop ho ist a nd the lifting points .
T he vehicle ja ck m ode* mus t be activa ted so that
the au tomatic a djustment of the Ad aptive Air
Suspension * does no t make it more difficult to
raise the ve hicle wit h the floor jac k.
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
T he lifting poin t 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 . 212 . 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. 213.
Lifting with vehicle jack
Refer to c::> pag e 229 .
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. 212 and c::> fig. 213.
-Failure to lift t he ve hicle at these points
could ca use t he veh icle to tilt o r fall from
a lift i f th ere is a change in vehicle weight
dist ribution and balance . This might hap­
pen, fo r example, when heavy compo­
n en ts such as the eng ine block o r trans­
missi on a re removed .
- 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 .
.,.
243

Consum er Info rmation
scope of maintenance and repairs which can be
carried out by vehicle owners.
Al so , sa fet y and
en vironment al
concerns place very strict limits
on the nature of repairs and ad justments 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 i n order to assure proper per ­
formance, reliab ility and safety of the veh icle and
its many systems .
Improper maintenance, adjustments and repairs
can impair the operation and reliab ility of your
veh icle and eve n void your vehicle warranty .
Therefo re, proof of servicing in accordance w ith
the ma intenance sc hedule may be a condition fo r
up hold ing a possible wa rra nty claim made wi thin
the warranty pe riod.
Above all , operational safety can be adversely af­
fected, c reating unnecessa ry risks fo r you and
your p assengers.
If 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 yo u to g ive your author ized Audi dealer the
opportu nity to pe rform a ll scheduled ma inte ­
nance and necessary repairs. Your dealer has the
facilities, origina l parts and train ed sp ecialists to
keep your veh icle running properly.
Performing limited maint enance yourself
The fo llow ing pages describe a limited number of
procedures w hich can be performed on your ve hi­
cle with ordinary tools, should the need arise and
trained personne l be unavai lable . Before pe r­
forming any of these procedures, always thor­
ough ly read a ll of the app licab le text and carefu l­
ly follow the instructions g iven . A lways rigorously
observe the
WARNING S provided .
Before you check anything in the engine com ­
partment , alw ays read a nd heed all WARNINGS
c> .&. and c> .&. in Working in the engine compart­
ment on page 189 .
248
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 maintenance,
checks or repairs described on the following pages if you are not fu lly fam il iar with these
or other proce dures with respect to t he ve­
hicle, or are uncertain how to proceed.
- Do not do any work wi thout the prope r tools
an d equi pmen t. H ave the necessary 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 area around or touch the radi­
ator fan. It is temperature controlled and
can switch on suddenly - even when the en­
gine is off . The radiato r fan switches on au­
tomatically when the coolan t reaches a cer­
tain tempe rature and w ill 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 vehicle with safety
stands if it is necessary to work underneath
the vehicle. The jack supp lied with the veh i­
cle is no t adequate fo r th is pu rpose a nd
could collapse causing serious personal in­
jury .
- If you must wor k unde rneath the vehicle
w ith the wheels on the g round, 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 pa rk b rake is applied .
Ill>

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@ For the sake of the environment
-Changing the engine settings wi ll adversely
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 old 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 classified as Perchlorate Mate­
rial -spec ial handl ing may apply, see
www .dtsc.ca .gov/hazardouswaste/perch lo­
r ate. When the vehicle or pa rts of t he re­
stra int system includi ng a irbag mod ules
s af ety be lts with pretens ioners a re scrap ­
ped, a ll applicab le laws and regulations
must be observed. Your a uthorized Audi
dealer is fam iliar with these requirements
and we recommend that you have your dea l­
er 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/Aluminum (Hybrid construc­
tion), Aluminum (Aud i Space Frame), and/or Alu­
minum/Carbon Fiber (Ultra Advanced Light
We ight Materials) are as unique as the ir dr ivers .
Therefo re, the ava ilability of certain parts needed
for repa ir , restorat ion, or reconstruction w ill be
rest ricted , or pa rts will be unava ilable, if the ve ­
hicl e is not repa ired at an a uthorized Aud i co lli­
sion repair facility . This includes but is not limi t­
ed to structura l parts which require specia lized
training and equipment to restore their crash ­
worthiness back to the original NHTSA and IIHS performance.
Your vehicle incorporates the latest safety design
features ensuring a high standard of active and passive safety.
Con sum er In form ation
This safety could be compromised by non -ap ­
proved changes to the vehicle. For t his reason, if
parts have to be rep laced, p lease observe the fol ­
lowing points when install ing additional accesso­
ries:
Approved Audi accessories and genuine Audi parts are avai lab le from authorized Aud i dea lers.
T hese dea le rs a lso have t he necessa ry fa cilit ies,
tools and trained specialists to install the pa rts
and accessories proper ly .
A WARNING
--
Using the wrong spare parts or using non -ap­
p roved accessories can cause damage to the
vehicle and serious personal injury.
- Use on ly accessories expressly approved by
Aud i and genuine Audi spare parts
- These parts and accessor ies have been spe­
cially designed to be used on your vehicle.
- Do not use license p late brac kets in the
front area that are d ifferent 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 deployment zones. Do­
ing so will increase the risk of injury if a ir­
bags a re tr iggered in an accident!
- Before you check anyth ing in the eng ine
compa rtment, always read and heed all
WARN INGS
~page 189.
@ Note
- If items other than genu ine Audi spare
parts, add-on equipment and accessory
items are used or if repa ir work is not per­
form ed according to specified methods, th is
c an result in seve re damage to you r vehi­
cle's eng ine and body (s uch as cor rosion)
and adve rsely affec t your ve hicle's warranty.
- If emergency repa irs m ust be pe rformed
elsew here, have the vehicle ex am ined by an
authorized A udi dealer as soon as possib le .
- Th e manufac ture r ca nnot be he ld liable fo r
damage wh ic h occur s d ue to fail ure to com ­
ply with these stipulations.
249

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Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Important safety instructions for using chi ld
safety seats . . . . . . . . . . . . . . . . . . . . . . . . 170
Important things to know when driving with
children . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Tether anchors . . . . . . . . . . . . . . . . . . . . . . 183
Tether straps . . . . . . . . . . . . . . . . . . . . . . . 183
Child safety lock Power windows . . . . . . . . . . . . . . . . . . . . . . 33
Rear doors . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Child safety seats . . . . . . . . . . . . . . . . . . . . . 172
Booster seats . . . . . . . . . . . . . . . . . . . . . . . 176
Convertible child seats . . . . . . . . . . . . . . . 174
Convertible locking retractor . . . . . . . . . . 179
How do I properly install a child safety seat
. h' l 7 170 in myve 1c e . ................. ... .. .
Infant seats .. ................ ... .. . 172
Installing a child restraint using the LATCH
system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
L ATCH system . . . . . . . . . . . . . . . . . . . . . . 182
L owe r anchorages . . . . . . . . . . . . . . . . . . . 181
Mounting and releasing the anchorage
hook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Safety instructions . . . . . . . . . . . . . . . . . . . 170
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Unused safety belts on the rear seat . . . . 172
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . . . 51
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Cleaning/removing ice from windows . . . . . 223
C leaning Alcantara . . . . . . . . . . . . . . . . . . . . 224
Cleaning artificial leather . . . . . . . . . . . . . . . 224
Cleaning carbon parts . . . . . . . . . . . . . 223, 224
C leaning contro ls . . . . . . . . . . . . . . . . . . . . . 223
Cleaning decorative parts/trim . . . . . . 222, 223
C leaning displays . . . . . . . . . . . . . . . . . . . . . 223
Cleaning exhaust tail pipes . . . . . . . . . . . . . 222
Cleaning plastic parts . . . . . . . . . . . . . . . . . . 223
C leaning rims . . . . . . . . . . . . . . . . . . . . . . . . 222
Cleaning textiles . . . . . . . . . . . . . . . . . . . . . . 224
Climate control system . . . . . . . . . . . . . . . . . 58
Automatic recirculation . . . . . . . . . . . . . . . . 62
Basic settings . . . . . . . . . . . . . . . . . . . . . . . . 62
Drive select . . . . . . . . . . . . . . . . . . . . . . . . . 104
C losing
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Sunroof. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Index
Closing/opening
By remote control . . . . . . . . . . . . . . . . . . . . 27
Using the door lock cylinder . . . . . . . . . . . . 29
With the convenience key . . . . . . . . . . . . . . 27
Closing aid (doors) . . . . . . . . . . . . . . . . . . . . . 24
Cockpit (overview) . . . . . . . . . . . . . . . . . . . . . . 6
Coming home . . . . . . . . . . . . . . . . . . . . . . . . . 40
Compartments . . . . . . . . . . . . . . . . . . . . . . . . 52
Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Consumer Information ............. 132, 247
Consumption (fuel) . . . . . . . . . . . . . . . . . . . . 20
Contacting NHTSA . . . . . . . . . . . . . . . . . . . . 132
Convenience key
Starting the engine (STAR T ENGINE STOP
button) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Stopping the engine (STAR T ENGINE ST OP
button) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Switching the ignition on . . . . . . . . . . . . . . 68
Unlocking/locking . . . . . . . . . . . . . . . . . . . . 27
Convenience opening . . . . . . . . . . . . . . . . . . . 34
Convertib le child safety seats . . . . . . . . . . . 17 4
Convertib le locking retractor
Activating . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Deactivating . . . . . . . . . . . . . . . . . . . . . . . . 180
Using to secure a child safety seat . . . . . . 179
Cooling down . . . . . . . . . . . . . . . . . . . . . . . . . 64
Cooling mode (4-zo ne deluxe automatic cli-
mate control) . . . . . . . . . . . . . . . . . . . . . . . . . 61
Cooling mode (deluxe automatic climate con -
trol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Cooling system Adding coolant . . . . . . . . . . . . . . . . . . . . . . 196
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Coolant level checking . . . . . . . . . . . . . . . . 196
Coolant temperature indicator . . . . . . . . . . . 9
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 13
Cornering light . . . . . . . . . . . . . . . . . . . . . . . 104
Crossing water . . . . . . . . . . . . . . . . . . . . . . . . 64
Cruise control system Changing speed . . . . . . . . . . . . . . . . . . . . . . 85
Preselecting speed . . . . . . . . . . . . . . . . . . . . 85
Switching off . . . . . . . . . . . . . . . . . . . . . . . . 85
Switching on . . . . . . . . . . . . . . . . . . . . . . . . . 84
Cup holders . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Current consumption . . . . . . . . . . . . . . . . . . . 20
253

Index
Cylinder management
refer to Cylinder on demand system . . . . . . 20
Cyli nder on dema nd syste m . . . . . . . . . . . . . . 20
D
Data recorder . . . . . . . . . . . . . . . . . . . . . . . . 124
Date display . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Daytime runni ng lights . . . . . . . . . . . . . . . . . 38
Declaration of compliance . . . . . . . . . . . . . . 250
D efective light bulb warning
Indicato r light . . . . . . . . . . . . . . . . . . . . . . . 1 7
Defrost ing (windows)
4- zone deluxe au toma tic climate con trol . . 6 1
D eluxe a utomat ic cli mate contro l . . . . . . . . 59
D EF (instrument cluste r) . . . . . . . . . . . . . . . . 22
De luxe a utomatic climate contro l
Air vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Determin ing cor rec t load l imi t . . . . . . . . . . 215
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Dimming the rea rview mirror . . . . . . . . . . . . 42
Distance dr iven . . . . . . . . . . . . . . . . . . . . . . . . 20
Door/rear lid warn ing . . . . . . . . . . . . . . . . . . . 19
Doors Chi ld safety lock . . . . . . . . . . . . . . . . . . . . . . 33
C losing aid . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Mechanically lock ing . . . . . . . . . . . . . . . . . . 29
Dr iver inform ation system . . . . . . . . . . . . . . . 19
C D/rad io disp lay . . . . . . . . . . . . . . . . . . . . . . 1 9
D oor/l uggage compartment lid warning . . 19
Efficiency program . . . . . . . . . . . . . . . . . . . . 21
E xterior temperature disp lay . . . . . . . . . . . 19
On-board computer . . . . . . . . . . . . . . . . . . . 20
Serv ice i nterval d isplay . . . . . . . . . . . . . . . 199
D river seating position . . . . . . . . . . . . . . . . . 126
D rive se lect . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Driving economically . . . . . . . . . . . . . . . . . . . 65
Dr iving safely . . . . . . . . . . . . . . . . . . . . . . . . 125
Driving throug h water . . . . . . . . . . . . . . . . . . 64
Driving time . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Dus t fi lte r
refer to Po llutant filter . . . . . . . . . . . . . . . . 58
Dynamic steering . . . . . . . . . . . . . . . . . . . . . 104
Indicator l ight . . . . . . . . . . . . . . . . . . . . . . 122
254
E
Easy seat entry . . . . . . . . . . . . . . . . . . . . . . . . 67
Economy tips (efficiency program) . . . . . . . . 21
E DL
refer to E lectronic D ifferent ial Lock . . . . . 119
Effic iency program . . . . . . . . . . . . . . . . . . . . . 21
E lectromechanical parking brake . . . . . . . . . 72
E lectromechanical steering . . . . . . . . . . . . . 122
Ind icator light . . . . . . . . . . . . . . . . . . . . . . 122
El ectron ic Diffe renti al Lock . . . . . . . . . . . . . 119
Ind icator lig ht . . . . . . . . . . . . . . . . . . . . . . . 16
E lectron ic immobilizer . . . . . . . . . . . . . . . . . . 25
E lectron ic stab ilization control . . . . . . . . . . 119
Ind icator light . . . . . . . . . . . . . . . . . . . . . . . 16
Sport mode . . . . . . . . . . . . . . . . . . . . . . . . 120
E mergency assistance . . . . . . . . . . . . . . . . . 226
Emergency b raking fu nction . . . . . . . . . . . . . 73
E mergency flashers . . . . . . . . . . . . . . . . . . . . 40
E mergency ope ra tion
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Luggage compartment lid . . . . . . . . . . . . . . 33
Se lector lever . . . . . . . . . . . . . . . . . . . . . . . . 80
Su nroof. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
E mergency release
Fuel f iller door . . . . . . . . . . . . . . . . . . . . . . 188
Emergency starting . . . . . . . . . . . . . . . . . . . 239
Emissions control system . . . . . . . . . . . . . . 188
En ergy managemen t . . . . . . . . . . . . . . . . . . 1 23
Ind icator lig ht . . . . . . . . . . . . . . . . . . . . . . . 14
Engine Coo la nt . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Start/Stop system . . . . . . . . . . . . . . . . . . . . 70
Start ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Start ing wi th ju mpe r ca bles . . . . . . . . . . . 239
Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Warming up/cooling down . . . . . . . . . . . . . 64
E ngine compartment
Open ing/clos ing the hood . . . . . . . . . . . . . 191
Overv iew . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Safety precau tions . . . . . . . . . . . . . . . . . . . 189
E n gine contro l (ind icator light) . . . . . . . . . . . 16
E ngine o il
Adding . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Chang ing . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Checking o il level . . . . . . . . . . . . . . . . . . . . 192