lock AUDI A4 2017 Repair Manual

Checking and Filling
the engine. See an authorized Audi dealer or
authorized Audi Service Facility for assis­
tance.
- Ad Blue attacks surfaces such as painted ve­
hicle components, plastic and carpet. Re­
move the fluid as quickly as possible with a
damp cloth and plenty of cold water. If the
Ad Blue has already crystallized, use warm
water and a sponge . Ad Blue residue that is
not removed will crystallize and can damage
the affected surface.
- Do not store refill bottles or canisters per­
manently in the vehicle. If the container
leaks, the escaping AdBlue could damage
the vehicle interior.
- Do not allow Ad Blue to come into contact
with clothing.
If there is contact with the
fluid , flush immediately with plenty of wa­
ter.
(D Tips
Follow the Ad Blue manufacturer 's instruc­
tions for use and storage.
Refilling AdBlue using the bottle
Applies to: veh icles with selective catalyt ic reduction
.. Remove the cap from the refill bottle¢ A in
Preparation on page 301,
~ CD in Preparation
on page 301.
.. Position the bottle on the filler tube and turn
the bottle clockwise until it stops turning.
.. Press lightly against the bottom of the bottle
to empty it. Continue pressing the bottom of
the bottle until it is empty or until fluid stops
flowing into the tank.
.,. Remove the bottle and seal the filler neck
¢ page 303, Completing AdBlue refill.
(D Note
Only use refill bottles that are approved for
your vehicle. Using other systems can cause
Ad Blue to leak.
(j) Tips
- You can obtain refill bottles from an author­
ized Audi dealer or authorized Audi Service
Facility.
302
- A permitted refill bottle contains approxi­
mately 0.5 gallon (1.9 liters) of AdBlue.
Refilling AdBlue using a canister
Applies to: vehicles with selective catalyt ic reduct ion
@
+®
Fig. 244 Canis te r w ith attachable hose
.,. Remove the cover from the refill canister ¢ A
in Preparation on page 301, ¢(Din Prepara­
tion on page 301 .
.. Secure the end of the hose (Don the opening in
the canister @by turning the hose to the right .
.. Remove the cap @from the other end of the
hose @ .
.. Position the end of the hose@on the filler
neck in the vehicle and turn the hose to the
right to tighten it .
.,. Lift the canister up and then tip it. Continue
holding the canister in a tipped position until it
is empty or until no more fluid flows into the
tank .
.. Remove the canister and close the filler tube
¢ page 303, Completing AdBlue refill .
([) Note
Only use refill canisters that are approved for
your vehicle. Using other systems can cause
AdBlue to leak.
(D Tips
- An authorized Audi dealer or authorized
Audi repair facility can tell you which refill
canisters are approved for your vehicle .
- A permitted refill canister contains approxi­
mately 1.3 gallons (5 liters) of Ad Blue.

reproductive harm. In addition, certain flu­
ids contained in vehicles and certain prod­
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproduct ive harm.
- Battery posts, terminals and related acces­
sories contain lead and lead compounds,
chem icals known to the State of California
to cause cance r and rep roductive harms.
Wash hands after handling.
(D Note
When filling flu ids, be sure not to mix the flu­
ids up . Otherwise severe ma lfunctions and en­
gine damage w ill occur.
@ For the sake of the environment
You should regularly check the grou nd under
your veh icle in order to detect Leaks qu ickly . If
there are v isible spots from oil or other fluids,
bring your vehicle to an authorized Aud i dea l­
er or authorized Audi Service Facility to be
checked.
Opening the hood
The hood is released from the interior.
F ig. 2 45 Dri ver fo otw ell : rele ase leve r
Checki ng an d Fill in g
Fig. 246 Unlocke d hood: lever
Make sure the wiper arms are not raised up from
the windshield. Otherwise the paint could be
damaged .
.,. With the driver's door open, pull the lever be­
low the instrument pane l in the direction of the
arrow
c;> fig. 245 .
.,. Raise the hood slightly c;> ,&. .
.,. Press the lever c;> fig. 246 in the direct ion of the
arrow. This releases the hooks .
.. Open the hood .
A WARNING
-
Never open the hood if you can see steam or
coolant escaping from the engine compart­ ment, because this increases the risk of
burns. Wait until no steam or coolant is es­
cap ing .
Closing the hood
.,. Push the hood down until you override the
force of the str uts .
.,. Let the hood fall lightly into the latch .
Do not
press it in.
c;> &_ .
A WARNING
-===
If the hood is not latched complete ly, it could
fly up wh ile you are driving and obstruct your
vis ion.
- For safety reasons, the hood must always be
closed securely while driv ing. Because of
this, always check the hood after closing it
to make sure it is latched correctly . The
hood is latched if the front corners cannot
be lifted.
~
305

Check ing and F illing
right brake fluid and the know -how to do this for
you.
A WARNING
- Brake fluid is poisonous. It must be stored
only in the closed orig inal container out of
the reach of chi ldren!
- B rake failure can resu lt from old or inappro­
pr iate brake flu id. Observe these precau­
t ions:
- Use on ly brake fluid that mee ts SA E speci ­
fi cation) 17 0 3 and confo rms to Fede ral
Motor Ve hicle Standard 116. Always check
wit h your authorized Audi dealer to make
sure you are using the correct brake fluid.
The cor rect type o f brake fluid is a lso indi­
cated on the brake fluid reservoir.
- The brake fluid must be new. Heavy use of
the brakes can cause a vapor lock if the
brake flu id is left in the system too long.
This ca n ser iously affect t he efficiency of
the bra kes as well as your safety. This
could result in an acc ident.
{U) Note
Brake fluid w ill damage the pa int of yo ur vehi­
cle.
@ For the sake of the environment
Because of the prob lem of proper disposal of
brake flu id as we ll as the special tools re­
quired and the necessary expertise, we rec­
ommend tha t you have the brake fluid
changed by your author ized Audi d ealer.
Battery
General information
Unde r normal operating conditions, the battery
i n your Audi does not need any maintenance.
W ith
high outs ide temperat ures o r long da ily
d rives we recommend that you have the electro­
lyte leve l checked by an a uth orized Audi dea le r or
qua lified wor kshop. The e lectroly te leve l should
a lso be checked each time the batte ry is ch a rged
¢ page 314.
312
Have t he battery chec ke d when yo u take yo ur ve ­
hicle in for service . You are we ll advised to re­
place a battery that is o lder than 5 yea rs .
With ce rta in types o f airbag deployment, t he
b atte ry is disconnected from the veh icle elect ri­
ca l system for safety reasons ¢.&
in Repair, care
and disposal of the airbags on page 268.
Disconnecting the battery terminals
Some ve hicl e fu nctions (power window regula ­
tors, for examp le) are lost if the batte ry te rm i­
nals a re disconnected . These f unc tions have to be
relearned after the battery term inals are con­
nected again . To p revent this, the battery should
o nl y be disconnected from the vehicle electrical
system when absolute ly necessary for repairs.
Vehicles not driven for long periods
If you do not d rive yo ur vehicle ove r a period of
severa l days o r weeks, electr ica l components are
grad ua lly cut back or switched of f. T his reduces
energy consumpt ion and maintains start ing ca­
pability over a longer period ¢
page 138.
Some of the convenience functions may not oper­
ate, such as the inter ior lights or the power seat
adjustment . The convenience functions will be
available again w hen you turn on the ignit io n and
start the eng ine .
Winter operation
Dur ing the winte r months, battery capacity tends
to decrease as tempe ratures drop. This is be ­
ca use more power is also consumed while start­
i ng, and t he headlights, rear w indow defogger,
etc ., are used more often.
Avo id unnecessary powe r consumption, partic u­
l a rly in city traffic or when traveling o nly short
distances . Let your author ized Audi dealer check
the capacity of the vehicle battery before win ter
sets in ¢
page 314 . A well charged battery will
n ot only p reve nt sta rting prob lems when the
we ather is co ld , but will also last longer.
@ Tips
I f yo ur vehicle is left sta nding for several
weeks at extreme ly low te mpera tures, th e ve-
h icl e b att ery should be re mo ved and store d
II>-

Wheels
bolts and a special procedure. You must never
repair or disassemble them ¢
.&..
A WARNING
Wheel bolts that are tightened or repaired in­
correctly can become loose and result in loss
of vehicle control, which increases the risk of
an accident. For the correct t ightening specifi ­
cation, refer to ¢
page 348, Finishing .
-Always keep the wheel bolts and the
threads in the wheel hub clean and free of
grease .
- Only use wheel bolts that fit the rim .
- Always have damaged rims repaired by an
authorized Audi dealer or authorized Audi
Service Facility . Never repair or disassemble
rims yourself, because this increases the risk
of an accident.
Winter tires
W inter tires significantly improve the vehicle's
handling when driving in winter conditions. Be­
cause of their construction (width, compound,
tread pattern) , summer tires provide less trac­
tion on ice and snow.
.,. Use winter t ires on all four wheels.
.,. Only use winter tires that are approved for your
vehicle.
.,. Please note that the maximum permitted
speed may be lowe r with winter tires
q ,&. . An
authori zed Audi dealer or authori zed Audi Serv­
ice Facility can inform you about the maximum
permitted speed for your tires .
.,. Check the tire pressure after installing wheels
¢page 327.
The effectiveness of winter tires is reduced great­
ly when the tread is worn down to a depth of
0 .16 in (4 mm) . The characteristics of winter
tires also decrease great ly as the tire ages, re­
gardless of the remaining tread .
A WARNING
-Never drive faster than the maximum per­
mitted speed for your tires. This could cause
the tires to heat up too much. This increases
332
-
the risk of an accident because it can cause
the tire to burst.
- Always adapt your driving to the road and
traffic conditions . Drive carefully and reduce
your speed on icy or slippery roads . Even
winter tires can lose traction on black ice .
@ For the sake of the environment
Reinstall summer tires at the appropriate
time, because they prov ide better handling
when roads are free of snow and ice. Summer
tires cause less road noise, tire wear and fuel
consumpt ion .
(D Tips
You can also use all season tires instead of
winter tires. Please note that in some coun­
tries where winter tires are required, only
winter tires w ith the ~ symbol are permitted .
Snow chains
Snow cha ins not only improve the driving in win­
ter road condit ions, but also the braking.
.,. Only install snow chains on the
front wheels .
This applies a lso to vehicles with all wheel
drive* .
.,. Check and correct the seating of the snow
chains after driving a few feet, if necessary. Fol­
low the instructions from the manufacturer.
.,. Note the maximum permitted speed when driv­
ing with snow chains. Do not exceed 30 mph
(SO km/h) .
Use of snow chains is only permitted with certain
rim/tire combinations due to technical reasons.
Check with an authorized Audi deale r or author­
ized Audi Service Facility to see if you may use
snow chains .
Use
fine-mesh snow chains. They must not add
more than 0.53 in (13 .5 mm) in height, including
the chain lock.
You must remove the snow chains on roads with­
out snow. Otherwise , you could impair driving
ability and damage the tires .

<( a, .... N ,....
N .... 0 0
3 a,
Care and cleaning
Component Situation Solution
Wheels
Road salt Water
Brake dust Acid-free special clea ning solution
Exhaust tail pipes Road salt Water, cleaning solution su itab le for stainless steel, if nee-
essary
Paint Paint damage Refer to the paint number on the vehicle data label, repair
with touch up paint
qpage 361
Spilled fuel Rinse with water immediately
Surface rust Rust remover, then protect with hard wax; for questions,
consult an authorized Audi dealer or authorized Audi Serv- ice Facility.
Cor rosion Have it removed by an autho rized Aud i dealer or author-
iz ed A udi Service Fac ility.
Water no longer Protect with hard wax (at least twice per year)
beads on the surface
of clean paint
No shine even thoug h Treat with suitable polish; then apply paint protectant if
paint has been pro- the polish that was used does not contain any protectant
tected/paint looks poor
Deposits such as in-
Dampen with wate r immedia tely and remove wit h a m icro-
sects, bi rd droppings, fiber cloth
tree sap and road salt
Grease-based con- Remove immediately with a mild soap solution
a) and a
taminants such as soft cloth
cosmetics or sunblock
Carbon parts Deposits Interior: clean the same way as plastic parts
Exterior: clean the same way as pa inted parts
Decorative decals Deposits Soft
sponge with a m ild soap solutional
a) Mild soap solut ion: max imum two tab lespoons of ne utral soap in 1 quart (1 lite r) of wate r
Interior cleaning
Component Situation Solution
Window glass
Deposits Glass cleaner, then wipe dry
Decorative parts/ Deposits Mi
ld soap solutiona>
Trims
Plastic parts
Deposits Damp cloth
H eavier deposits Mild
soap solution a>, detergent-free p lastic cleaning solu-
tion, if necessary
Displays /instru-Deposits Soft cloth with LCD cleaner
ment cluster
Controls
Deposits Soft
brush, then a soft cloth with a mild soap solutiona>
Safety belts Deposits Mild soap solutiona>, allow to dry before letting them re-
tract
339

Emergency assistance
Trunk escape latch
In case of an emergency, the rear lid can be
opened from the inside using the trunk escape
latch.
Fig. 257 Luggage compartment: Trunk escape latc h
• Push the latch in the direction of the arrow un­
t il the lock releases.
The trunk escape latch ins ide the rear lid is made
of fluorescent material to glow in the dark.
_& WARNING
The trunk escape latch is to be used only in an
emergency .
@ Tips
The emergency release lever should never be
used as a handle fo r closing the luggage com­
par tment l id.
General information
• Park the vehicle as far as poss ible from moving
t raff ic in the event of a breakdown . In the event
of a flat tire , park the vehicle on a leve l surface .
It you are on a steep hill, be especially careful.
• Set the parking brake.
• Switch the emergency flashers on.
• Have the passengers exit the vehicle. They
should move to a safe place, for example be­
hind a guard rail.
Emergen cy a ssis tanc e
_& WARNING
-Follow the steps given above. Th is is for your
protection and the for the safety of other driv ­
ers .
Equipment
Vehicle tool kit/vehicle jack
Applies to: vehicles wit h the vehicle tool kit and vehicle jack
Fig. 258 Lu ggage compa rt ment: vehicle tool kit, vehicle
jack*, tir e m ob ility kit and compressor
The vehicle tool kit, vehicle jack, tire mobility k it
and compressor are stored in the luggage com­
partment under the cargo floor cover.
• Lift the cargo floor using the p lastic handle and
hook the handle onto the luggage compart­
ment seal
c:> fig . 258.
• Vehicles with spare tire: turn the handle coun­
ter -clockwise and remove the spare tire .
"' Unhook the cargo floor before closing the rear
lid .
Depending on vehicle equipment, the vehicle tool
k it, tire mobility kit and compressor may be lo­
cated under another cover that is secured w ith a
handwheel.
(D Tips
The vehicle jack in your vehicle is mainte­
nance-free.
Tire mobility kit
Preparation
"' Read and follow the important safety precau­
tions
c:> page 343.
• Set the parking brake. ll>-
34 3

Emerg ency assis ta nce
The vehicle jack mode* switches off automatical­
ly at speeds above 6 mph (10 km/h).
A WARNING
If you are changing a tire on a steep hill, use a
block or similar object to block the opposite
wheel to prevent the vehicle from moving.
A WARNING
You or your passengers could be injured wh ile
chang ing a wheel if you do not follow these
safety precautions :
- If you have a flat t i re, move a safe d ista nee
off the road . Turn off the engine, turn the
emergency flashers on and use other warn­
ing devices to alert other motorists.
- Make s ure that passengers wa it in a safe
place away from the vehicle and well away
from the road and traffic.
- To help prevent the vehicle from moving
suddenly and possibly slipp ing off the jack,
always fully set the parking brake and block
the wheel diagona lly oppos ite the wheel be­
ing changed with the folding chocks or oth ­
er objects . When one front wheel is lifted
off the ground, placing 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 veh icle tool k it, the jack
and the replaced tire in the luggage com­
partment
c::> page 242.
@ Tips
Obey all laws.
346
Removing the cap
Fig. 262 Whee l: wheel bolts with c aps
Whee l bolts with cap s
.. Slide the p lastic clip (from the vehicle tool k it)
onto the cap until it engages
c::> fig . 262.
.,. Remove the cap with the plastic clip.
Loosening the wheel bolts
Fig . 263 Whee l: loosen ing t he whee l bolt
.. Slide the wheel wrench (from the vehicle tool
kit) all the way onto the wheel bolt .
.. Turn the wheel bolt approximately one turn to
the left -arrow- . To reach the required torque,
hold the end of the wheel wrench . If the wheel
bolt will not loosen, press ca refu lly on the
wheel wrench with your foo t. H old onto the ve­
hicle securely whi le dur ing th is and make sure
your stance is stable.
A WARNING
To reduce the risk of an accident, only loosen
the wheel bolts gent ly (one turn) before rais­
i ng the veh icle with the vehicle jack*.

<( a, .... N ,....
N .... 0 0
3 a,
~ If the removed wheel does not fit in the spare
whee l we ll, store it securely in the luggage
compartment ¢
page 242.
~ Check the tire pressure on the installed whee l
as soon as possible.
~ On vehicles with a Tire Pressure Monitoring Sys ­
tem*, check the tire pressure and store it in the
Infotainment system
<::;> page 336 .
~ The wheel bolt tightening specification must be
90
ft lbs (120 Nm). Check it as soon as possible
with a torque wrench . Drive carefully until then.
~ Have the faulty wheel replaced as quickly as
possible.
(D Tips
- If you notice that the wheel bolts are cor­
roded and difficult to turn while changing a
tire, they should be replaced before you
check the tightening torque.
- Drive at reduced speed until you have the
tightening torques checked.
Notes on wheel changing
Please read the information ¢ page 324 if you
are go ing to use a replacement tire which is dif­
ferent from the tires on your vehicle.
After you change a tire:
- Check the tire pressure on the replacement
tire immediately after installation.
- Have the wheel bolt tightening torque
checked with a torque wrench as soon as pos­
sible by your authorized Audi dealer or quali­
fied workshop.
- With steel and alloy wheel rims, the wheel
bolts are correctly tightened at a torque of
90 ft lbs (120 Nm).
- If you notice that the wheel bolts are corroded
and difficult to turn while changing a tire,
they should be replaced before you check the
tightening torque.
- Replace the flat tire with a new one and have
it installed on your vehicle as soon as possi­
ble . Remount the wheel cover.
Until then, drive with extra care and at reduced
speeds .
Emergency assistance
A WARNING
- If you are going to equip your vehicle with
tires or rims which differ from those which
were factory installed, then be sure to read
the information
r::;> page 324.
-Always make sure the damaged wheel or
even a flat tire and the jack and tool kit are
p ro perly secured in the luggage compart­
ment and are not loose in the passenger
compa rtment.
- In an accident or sudde n maneuver they
could fly forward , injur ing anyone in the ve­
h icl e.
- Always store damaged wheel, jack and tools
securely in the luggage compartment. Oth­
erwise, in an acc ident or sudden maneuver
they could fly forward, causing injury to pas­
sengers in the ve hicle.
Space-saving spare tire
Applies to: vehicles with space-saving spare tire
-
The spare tire is intended fo r short-term use on­
ly. Have the damaged tire checked and replaced,
if necessary, by an authorized Audi dea ler or au­
thori zed Audi Service Facility as soon as possible.
T he re are some restrictions on the use of the
spare tire. The spare tire has been designed spe­
cifically for your type of vehicle . Do not rep lace it
with the spare tire from another type of vehicle .
T he tire press ure must be 61 PS I (420 kPA).
Removing the spare tire
~ Lift the cargo floor using the p lastic handle and
hook the handl e onto the luggage compa rt­
ment seal
¢page 343, fig . 258.
~ Remove the handle by turning it counter-clock­
wise and remove the spare tire.
~ Unhook the cargo floor before closing the rear
lid.
Snow chains
For technical reasons, the use of snow chains on
the compact spare tire is not pe rmitted .
If you have to drive w ith snow chains and a front
tire fails , mount the spare wheel in place of a .,..
349

Fuses and bulbs
Driver's side cockpit fuse assignment
Fig . 27 2 Driver side cockpit: fuse panel with plastic bracket
Fuse panel
No . Equipment
2 Te lephone
4 Head-up display
5 Audi mus ic interface
6 Front cl imate co ntro l system co ntro ls
7 Steering column lock
8 Infota inment sys tem display
9 Instrument cl uster
10 Info ta inment unit
11 Light switch
12 Steering col umn elec tronics
14 Infotainment system
16 Steer ing wheel hea ting
354
left luggage compartment fuse
assignment
Fig. 27 3 Left side of the luggage compartment: fuse panel
w ith plastic clip
Fuse panel @ (black)
No. Equipment
2 Windshie ld defroster
3 W indshie ld defroste r
5 Suspension control
6 Automat ic t ransmiss io n
7 Rear window defogge r
8 Rear seat heat ing
9 Tail lights
10 L eft sa fety belt tensioner
11 Cent ral locking
12 E lectric luggage comp artment lid
Fuse panel ® (red)
No. Equipment
No t assigned
Fuse panel © (brown )
No. Equipment
2 Telephone
3 L umbar support

Emergency situations
-When connecting jumper cables, make sure
that they cannot get caught in any moving
parts in the engine compartment.
- Do not bend over the batteries -danger of
chemical burns!
- The battery cell locking screws must be
tightened securely.
- Before you check anything in the engine
compartment, always read and heed all
WARNINGS
c> page 304.
(D Note
Improper hook-up of jumper cables can ruin
the generator.
- Always connect POSITIVE(+) to POSITIVE
(+), and NEGATIVE(-) to NEGATIVE(-)
ground post of the battery manager control
unit.
- Check that all screw p lugs on the battery
cells are screwed in firmly. If not, tighten
plugs prior to connect ing clamp on negative
battery terminal.
- Please note that the procedure for connect ­
i ng a jumper cable as described above ap­
plies specifically to the case of your vehicle
being jump started . When you are giving a
ju mp start to another vehicle, do
not con­
nect the negative (-) cable to the negative
(-) terminal on the discharged batte ry @
c> fig. 2 75. Instead, securely connect the
negative( -) cab le to either a solid metal
component that is firm ly bolted to the en­
gine block or to the engine block itself. If
the battery that is being charged does not
vent to the outside, escap ing battery gas
could ignite and explode!
Towing with a tow truck
General hints
Your Audi requires special handling for towing.
The following information is to be used by com­
mercial tow truck operators who know how to op­
erate the ir equipment safely.
-Never tow your Audi, towing will cause dam­
age to the engine and transmission.
358
-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
i:> page 358 and c> page 359 .
A WARNING
A vehicle being towed is not safe for passen­
gers. Never allow anyone to ride in a vehicle
being towed, for any reason.
Front towing loop
Only install the front towing loop when it is
needed.
Fig. 276 Front bumper: installing the towing loop
The threaded opening for the towing loop is lo­
cated on the right s ide of the front bumper.
.,. Remove the towing loop from the vehicle too l
ki t
c> page 343 .
.,. Press the cap inward with brief, forceful p res­
sure
c> fig. 2 76. The cap will loosen from the
bumper .
.,. Insert the towi ng loop all the way into the
threaded opening and tighten it with a wheel
wrench.
.,. After using, place the towing loop back in the
vehicle tool kit .
A WARNING
If the towing loop is not tightened until it
stops when installing, the threads may be
pulled out when towing the vehicle and that
could cause an accident.
-