2018 AUDI A6 check engine

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" N .... 0 0 \.J ' @ 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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" N .... 0 0 \,;J ' 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