2016 AUDI A8 check engine

Check ing and F illing
@
No
- spark s
- fl ame s
- smokin g.
~
Wh en a b att ery is ch arg ed , it produc es
h yd ro ge n ga s which i s explosive and
could cau se per sonal injury.
®
Always keep the b atter y well out of
r each of child ren.
A WARNING
Whenever work ing on the battery or on the
elect rical system, there is the risk of injury,
accident and
even fire. Read and heed the fol­
lowing WARN INGS :
- Always wear eye protection. Do not let bat­
te ry acid or any lead particles get on your
sk in or cloth ing . Sh ield your eyes. Explosive
gases can cause blindness or other injury .
- Battery acid con tains su lfu ric acid. Sulfur ic
acid can cause blindness and severe b urns.
- Always wear gloves and eye protection. Do
no t tilt the battery because acid could leak
out of the ventilat ion open ings .
- If you get battery ac id in your eyes or on
your skin, immediately rinse with cold wa­
ter for several minutes and get medical at­ tention .
- If you should ingest any battery acid, seek
medical attention immediately .
- Do not expose the battery to an open flame,
electric sparks or an open light .
- Do not smoke.
- Do not interchange the positive and nega-
t ive cables.
- When working on the battery, be sure not to
short-circuit the terminals with tools or oth ­
er metal objects. Th is wou ld cause the bat­
tery to heat up
very quickly, which could
lead to damage or explosion and personal
injury .
- When a battery is charged, it produces hy ­
drogen gas which is explosive and could
ca use personal injury.
- Always keep the battery well out of the reach of ch ildre n.
232
-
-Before work is done on the electrical sys­
tem, disconnect the negative gro und cable.
- Before performing any work on the e lectri­
cal system, switch off the engine and ign i­
tion as well as any electrical equ ipment . The
negat ive cab le on the battery must be dis­
connected . If you are just going to replace a
light bulb, then it is enough to switch off
the lights.
- Before d isconnecting the battery, switch off
the anti-theft alarm system! Otherwise you
will set off the alarm.
- When disconnecting the battery, first dis­
connect the negative cab le and then the
positive cable.
- Before reconnect ing the battery, make sure
all electr ica l consume rs a re switched off .
Reconnect the positive cable first and then
the negative cable . Never in terch ange t he
cables -this could sta rt a fire!
- Never cha rge a frozen or a thawed-out bat­
tery . It cou ld explode ! If a ba ttery has fro­
zen, then it must be replaced. A discharged
battery can freeze over at 32 ° F (0 °C).
- Make sure the
vent hose is always attached
to the opening on the side of the battery .
- Never use batter ies which are damaged.
There is the danger of an exp losion! Always
replace a damaged battery .
A WARNING
Califo rnia Proposition 65 Warning :
- Batte ry posts, te rm inals and related acces­
sories contain lead and lead compounds,
chemicals known to the State o f Cali fornia
to cause cancer and reproductive problems.
Wash hands after handling.
(D Note
- Do not disconnect the vehicle battery when
the ignition is on or when the engine is run­
ning, otherwise, you w ill damage electronic
components in the electrical system.
- If your veh icle is go ing to stand for a long
period of time w ithout being driven, protect
the battery from "freezing", otherwise it ..,.

will be damaged and will then have to be re­
placed.
Battery charging
Starting the engine requires a well charged bat­
tery.
Fig. 203 Engine co mpa rtment: connectors fo r a c harger
and jump start cables
Always read and heed all WARNINGS below
~ &. and
¢ A in Working on the battery on
page 232.
• Switch off the ignition and all electrical con­
sumers .
• Make sure the area is well ventilated when you
charge the battery.
• Open the engine hood
~ page 220.
• Remove the cover (D by pressing on the arrow
¢ fig . 203.
• Open the cover @on the positive terminal.
• Connect the charger connectors according to
the instructions to the
jump start bolts. (Bolts
under the red cover= "positive" , Bolts with hex
head
= "negat ive").
• Only now plug the mains lead for the charging
equipment into the wall outlet and turn it on
¢&,, .
• Make sure the charging rate is not over
30 amps/14.8 Volt.
• When the battery is fully charged: Turn the
charging equipment off and remove the mains
lead from the wall outlet .
• Now remove the clamps for the charging equip-
ment.
~ • Close the red cover on the positive pole. 0
~ • Close the hood~ page 221.
rl I.Cl U"I
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Checking and Filling
A discharged battery can freeze at temperatures
of only 32 F
0 (0 °C). Allow a frozen battery to
thaw completely before attempting to charge it
¢ &. However , we recommend not using a
thawed battery again because the battery casing can be cracked due to ice formation and can leak
battery acid.
Battery charging (Maximum charging rate of
30 amps/14.8 Volt)
When charging at low voltages (e.g . w ith a trick­
le charger),
the battery cables do not have to be
disconnected first. The battery caps should
not
be opened when charging a battery.
It is not necessary to remove the battery from
the luggage compartment, and it is also not nec­
essary to disconnect the cables .
Fast charging the battery (charging rate
above 14.8 Volts)
For technical reasons do not use a battery charg­
er that uses voltage greater than 14.8 Volts to
charge your vehicle's battery.
.&_ WARNING
Charging a battery can be dangerous.
- Always follow the operating instructions
provided by the battery charger manufactur­
e r when charging your battery.
- Never charge a frozen battery. It may ex­
p lode because of gas trapped in the ice. Al­
low a frozen battery to thaw out first.
- Do not reuse batteries which were frozen.
The battery housing may have cracked and
weakened when the battery froze.
- Charge the battery in a well ventilated area.
Keep away from open flame or electrical
spark. Do not smoke. Hydrogen gas generat­
ed by the battery is explosive.
- To reduce the danger of explosion, never
connect or disconnect charger cables while
the charger is operating.
- Fast charging a battery is dangerous and
should only be attempted by a competent
technician with the proper equipment.
- Battery acid that may spill during charging
should be washed off with a so lution of
233

Check ing and F illing
warm water and baking soda to neutralize
the acid.
CD Note
Never use a fast charger as a booster to start
the engine . This will serious ly damage sensi­
tive electronic components, such as control
units, relays, radio, etc., as well as the battery
charger.
Battery replacement
T he new battery must have the same specifica­
t ions and dimensions as the original equipmen t
bat tery.
Int elli g ent en ergy managem ent in your vehicle is
responsible for distributing the electrical energy
throughout your vehicle
r=> page 195. The intelli­
gent energy management system will keep the
engine battery charged better than veh icles w ith­
out this system . To make sure the addit ional
e lectrical energy is avai lab le once again after you
have changed the battery, we recommend that
you install batteries of the same type and manu­ facture on ly (the same as those installed at the
time your vehicle was delivered). Specifications
are listed on the battery housing. Your author­
i z ed dealer must code the battery in the energy
management system to enable you to use the en­
ergy management functions correctly after re ­
placing the battery .
The new battery must have the same capacity,
voltage (12 volts) , amperage, construction and
plug sealing .
When installing the battery, make sure the igni­
tion and all electrical consumers are sw itched
off.
CD Note
- Make sure the ventilation hose on the s ide
of the battery is connected, otherw ise
fumes or battery ac id can leak out.
- Vehicles with the Start-Stop-System* are equipped with a special cycle-proof AGM battery . Installing a d ifferent type of bat­
tery can cause problems in the vehicle elec -
234
trical system. When replacing the vehicle
battery, always install one with the same
specifications as the original battery .
- Battery mounts and clamps m ust always be
secured correctly.
- Read and follow the warnings under
¢ page 231, Working on the battery before
performing any work on the battery .
@ For the sake of the environment
Because of the p roblem of proper disposal of
a battery, we recommend your authorized
A udi dealer change the battery for you . Bat­
teries contain sulfur ic acid and lead and must
a lways be disposed of properly in compliance
with all environmental regulations . Disposing
of veh icle batteries improperly is very danger­
ous to the environment .
Windshield washer
system
Fig. 204 En gin e compa rt ment: washer fluid rese rvoir cap
The w indshield washer fluid reservo ir Q conta ins
the cleaning solution for the w indshield and the
headlight washe r system ¢
fig. 204, ¢ page 222.
The reservoir capacity is found in
r=> page 2 78 .
To reduce the risk of lime scale depos its on the
spray nozzles, use clean water with low amounts
of calcium. Always add w indow cleaner to the wa­
ter . When the outside temperat ures are cold , an
anti-freez ing agent shou ld be added to the water
so that it does not freeze. ..,.

Replacing wheels
Before changing a wheel
Observe the following precautions for your own
and your passenger's safety when changing a
wheel.
.,. After you experience a tire failure, pull the car
well away from moving traffic and try to reach
level ground before you stop¢.,&. .
.. All passengers should
leave the car and move
to a safe location (for instance, beh ind the
guardrail) ¢.,&. .
.,. Engage the
parking brake to prevent your vehi­
cle from rolling unintentionally ¢.,&. .
.. Move
selector lever to position P ¢ .,&. .
1> lfyou are towing a trailer, unhitch the trailer
from your vehicle.
.,. Take the
jack and the spare tire out of the lug­
gage compartment,
¢page 257.
..&, WARNING
You or your passengers could be injured wh ile
changing a wheel if you do not follow these
safety precautions:
- If you have a flat tire, move a safe distance
off the road. Turn off the engine, turn the
emergency flashers on and use other warn­
ing devices to alert other motorists.
- Make sure that passengers wa it in a safe
place away from the vehicle and well away
from the road and traffic.
- T o help prevent the vehicle from moving
sudden ly and possibly slipping off the jack,
always fully set the parking brake and block
the wheel diagonally opposite the wheel be­
ing changed. When one front wheel is lifted
off the ground, plac ing the Automatic
Transmission in "P" (Park) will
not prevent
the vehicle from moving.
- Before you change a wheel, be sure the
ground is level and firm . If necessary, use a
sturdy board under the jack .
- Always store the vehicle tool k it, the jack
and the replaced tire in the luggage com­
partment ¢
page 135.
Emergency assistance
{!) Tips
Before changing the wheel, you must activate
the jacking mode, so that the automat ic con­
tro ls for the Adaptive Air Suspension do not
make it more difficult to lift the vehicle with
the jack ¢
page 261 .
Changing a wheel
When you change a wheel , follow the sequence
described below step-by-s tep and in exactly tha t
order .
l. Activate the vehicle jack mode ¢ page 261 .
2. Remove the decorative wheel cover*. For
more details see also¢
page 260, Decora ­
tive wheel covers
or¢ page 260, Wheels
with wheel bolt caps .
3. Loosen the wheel bolts¢ page 260.
4. Locate the proper mounting point for the
jack and align the jack below that point
¢ page 261 or¢ page 262.
5. Raise the car with the jack¢ page 261 or
¢page 262.
6. Remove the wheel with the flat tire and then
install
the spare ¢ page 263.
7. Tighten all wheel bolts lightly .
8.
Lower the vehicle with the jack .
9. Use the wheel bolt wrench and
firmly tighten
all wheel bolts<=>
page 260.
10. Replace the decorative wheel cover*.
11. Deactivate the vehicle jack mode in the MMI :
I CAR! function button > Car systems contro l
button
> Servicing & checks > Air susp.: jack
mode > Off.
The vehicle jack mode switches off automatically
at speeds above 10 km/h .
..&, WARNING
Always read and follow all WARNINGS and in­
formation
¢ .&. in AB: Raising the vehicle on
page 262
and ¢ page 264.
259

Emergency situations
General
This chapter is intended for trained emergency
crews and working personnel who have the nec­
essary tools and equipment to perform these
ope rations.
Starting by pushing or
towing
(D Note
Veh icles with an automatic transmission can­
not be started by pushing or towing.
Starting with jumper
cables
If necessary, the engine can be started by con­
necting it to the battery of another vehicle .
If the engine shou ld fail to start because of a dis ­
charged or weak battery, the battery can be con­
nected to the battery of
another vehicle, using a
pair of jumpe r cables to start the engine.
Jumper cables
Use only jumper cables of suffic iently large cross
section
to carry the starter current safely. Refer
to the manufacturer's specifications.
Use only jumper cables with
insulated term inal
clamps which are dis tinct ly marked :
plus(+) cable in most cases colored re d
minus( -) cable
in most cases colored blac k.
A WARNING
Batteries contain electricity, acid, and gas.
Any of these can cause very serious or fatal in­
jury. Follow the instructions below for safe
handling of your vehicle's battery.
- Always shield your eyes and avo id leaning
over the battery whenever poss ible.
- A discharged battery can freeze at tempera­
tures just below 32 °F (0 °C) . Before con­
necting a jumper cable, you must thaw the
Emergency situations
frozen battery completely, otherwise it
could explode .
- Do not allow battery acid to contact eyes or
skin. Flush any contacted area with water immediately.
- Improper use of a booster battery to start a
vehicle may cause an exp losion.
- Vehicle batteries generate exp losive gases.
Keep sparks, flame and lighted cigarettes
away from batteries.
- Do not try to jump start any vehicle with a
low acid level in the battery .
- The vo ltage of the booster battery must also
have a 12-Volt rating. The capacity (Ah) of
the booster battery should not be lower
than that of the discharged battery. Use of
batter ies of different voltage or substantial­
ly different "Ah" rating may cause an exp lo­
sion and personal injury .
- Never charge a frozen battery. Gas trapped
in the ice may cause an explosion.
- Never charge or use a battery that has been
frozen . The battery case may have be weak­
ened .
- Use of batter ies of different voltage or sub ­
stantially different capacity (Ah) rating may
cause an exp losion and injury. The capac ity
(Ah) of the booster battery should not be
lowe r than that of the discharged battery.
- Before you check anything in the eng ine
compartment, always read and heed all
WARNINGS
r::!)page 220.
(D Note
-Applying a higher voltage booster battery
will cause expensive damage to sensitive
electronic components, such as control
units, relays, radio, etc.
- Th ere must be no electrical contact between
the vehicles as otherwise current could al­
ready start to flow as soon as the positive
(+) terminals are connected.
(D Tips
- The discharged battery must be properly
connected to the vehicle's e lectrica l system. ..,.
271

Emergency situations
When jump starting or charging the bat­
tery, never connect the negative ground ca­
ble to the battery negative post because the
battery manager system must be able to de­
tect the battery's state of charge. Always
connect the negative ground cable to the
negative ground post of the battery manag­
er contro l unit.
Use of jumper cables
Make sure to connect the jumper cable clamps in
exactly the order described below!
F ig . 230 Engine compar tment: connectors for jump start
cables and cha rger
F ig. 231 Jump starti ng wit h the battery of another veh icle:
@ -boos ter battery, @-disc harged vehicle battery
The procedure described be low for connecting
jumper cables is intended to provide a jump start for your vehicle.
Vehicle with discharged battery:
• Turn off lights and accessories, move leve r of
automatic transmission to N (Neutral) or P
(Park) and set parking brake.
Connect POSITIVE (+) to POSITIVE (+) ( red)
• Open the red cover on the positive term inal
¢ fig. 230.
272
1. Connect one end of the red positive cable on
the
jump start bolt 9 fig. 231 (D (bolt under
the red cover= "positive") of the veh icle to be
started @.
2. Connect the other end to the positive termi-
nal @ of the booster battery @.
Connect NEGATIVE (- ) to NEGATIVE(-)
(black)
3. Connect one end of the black negative cable
to the negative term inal @ of the booster
battery @.
4. Connect the other end to the
jump start pin
@ (bolts with hex head bolt= "negative") of
the vehicle to be started ®·
Starting the engine
• Start the eng ine of the vehicle with the booster
battery @. Run the eng ine at a moderate
speed.
• Sta rt engine w ith discharged vehicle ba ttery @
in the usual manner.
• If the engine fails to start, do not keep the
starter cranking for longer than 10 seconds.
Wait for about 30 seconds and then try again.
• With engine running, remove jumper cables
from both vehicles in the exact
reverse order.
• Close the red cover on the positive terminal.
The battery is vented to the outside to prevent
gases from entering the vehicle interior . Make
sure that the jumper clamps are well connected
with their metal parts in full contact with the battery terminals.
&_ WARNING
To avoid ser ious personal injury and damage
to the vehicle, heed all warnings and instruc­
tions of the jumper cable manufacturer. If in
doubt, call for road service.
- Jumper cables must be long enough so that
the vehicles do not touch .
- When connecting jumper cables, make sure
that they cannot get caug ht in any moving
parts in the engine compartment.
- Before you check anything in the engine
compartment, always read and heed all
WARNINGS
¢ page 220.

(D Note
Im pro per hook-u p of jum per cables can ru in
the gene ra tor.
- Always connect P OSITI VE( +) to POS ITI VE
( + ), and NEGATIVE( -) to NEGATIVE( -)
ground post of t he battery manager contro l
u nit .
- Check that a ll sc rew p lugs on the battery
ce lls a re sc rewed in firmly . If not, t igh ten
pl ugs p rio r to connecting clamp on negative
batte ry te rminal.
- Please note t hat the procedure fo r con nect­
i ng a jumper cab le as desc ribe d above ap­
p lies specifica lly to the case of yo ur vehicle
being jump s tarte d. W hen you are giv ing a
ju mp s ta rt to an othe r vehicl e, do
not con­
n ect t he nega tive (- ) ca b le t o t he nega tive
(-) t ermin al on the di scharged battery @
c> fig . 23 1. Instead, securely connec t the
negative (-) cable to either a solid metal
com ponent that is f irm ly bolted t o the e n­
gine block o r to t he engine bloc k itsel f. If
the batt ery that is be ing c ha rge d d oes not
vent to the outs ide, escap ing batte ry gas
could ignite and e xplode!
Towing with a tow truck
General hints
Your Audi require s speci al handling f or towing.
Th e follow ing informat ion 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
must be transported with a flat bed truck.
- To load the vehicle on to the flat bed, use the
towing loop found in the vehicle tools and at­
tach to the front or rear anchorage
¢page273 and ¢pag e 274 .
Emergency situations
A WARNING
-A ve hicle being towe d is not safe for passen-
ge rs. Neve r allow a nyo ne to ride in a vehicle
b eing towed, for any reason.
Front towing loop
Only install the front towing loop when it is
needed .
Fig. 232 Front bumper: cover
Fig. 233 Front bumper: screwing in th e towing loo p
The towing loo p fits in to the thre aded hole locat­
ed o n the r ig ht side o f the fron t bumper a nd cov­
ered by a small cover when not in use.
" Re move the towing loo p from the vehi cle too l
ki t.
" Press inward s tron gly on the up per left si de of
the cap to remove it from the bum per
¢ fig . 232.
" Screw the towing loop tightly in the threaded
hole as far as it will go and tighten it with the
wheel wrench
<=> fig . 233.
Remove the towing loop when you are done using
it and place it back in the ve hicle too l kit. Insta ll
the cover in the bumper . Always keep the towing
loop in the vehicle . ..,.
273

eye. For technica l reasons, the pres sure in the
suspension st ruts may change during the
t ra nspo rt a nd this will adverse ly affect vehicle
handling.
Raising the vehicle
Lifting with workshop hoist and with floor
jack
T he vehicle may only be lifted at the lifting
poin ts illus trated .
Fig . 237 Front lift ing point
F ig. 238 Rear lift ing po int
.,. Read and heed WARNING¢&_.
... Activate the vehicle jack mode in the MMI:
I CAR I funct io n button> Car system s control
button >
Servicing & checks > Air susp .: jack
mode > On .
... Loc ate lift ing po ints ¢fig. 237 and ¢ fig. 23 8 .
.,. Adjus t lifting arms of wo rkshop hoist or floo r
jack to matc h ve hicle lifting points .
... Inse rt a ru bber pad between t he f loor jack/
workshop hoist and the lifting points.
T h e vehicle jack mode m ust be act ivate d so that
the automatic adjustment of the Adaptive Air
Suspension does not ma ke it more diffic ult to
raise the ve hicle w it h the floor jack .
Emergency situations
If you must lift your vehicle with a floor jack to
work unde rneath , be sure the vehicle is safely
supported on stands intended for this purpose.
Front lifting point
T he li fting poi nt is locate d on the floor p an rein­
f o rcement about at the sa me level as the ja ck
mounting point¢
fig. 237 . Do not lift the vehi­
cle at the vertical sill re inforcement .
Rear lifting point
T he lif ting point is locate d on the vertical rei n­
f o rcement of the lowe r sill for the on-bo ard j ack
¢fig. 238 .
Lifting with vehicle jack
Refer to¢ page 261 .
A WARNING
-- To reduce the r is k of se rious inju ry and veh i-
cle dama ge.
- Always lift the vehicle on ly at the special
w orkshop hoist and f loor jack lift points
il ­
lu strated¢ fig. 237 and¢ fig. 238.
- Failure to lift the ve hicle at these points
could cause the veh icle to tilt or fall fr om
a lift if t here is a change in vehicle weight
dist ribution and balance . Th is m ig ht hap­
pen , fo r e xampl e, wh en heavy compo­
n ents such as the eng in e block o r trans­
mi ssion are removed.
- W hen re mov ing heavy componen ts like
t hese, anchor veh icle to hoist or add co rre­
s p ondin g weig hts to maintai n the center of
g ra vity. O therw ise, the vehicle mig ht tilt or
slip
o ff th e hois t, c ausing se rious pe rsonal
i njur y.
(D Note
- Be aw are of the fo ll ow ing poi nts before 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
275