2020 AUDI S4 Check coolant level

8W1012721BB
Trailer towing

them so you have a sufficient visibility behind
you.
Exterior lighting
Follow the legal regulations for lighting on your
trailer that are applicable in the country where
you are operating the vehicle. Contact an author-
ized Audi dealer or authorized Audi Service Facili-
ty for more information.
Before you start driving, check all lighting equip-
ment on the trailer while it is hitched to the vehi-
cle.
The headlight range control automatically ad-
justs the light range of the headlights.
Safety chains
Make sure the safety chains are correctly applied
when pulling a trailer. The chains should hang
enough so that the trailer can drive around
curves. However, they must not touch the
ground.
@) Note
Attachments retrofitted on the vehicle may
cause damage, especially on the trailer hitch
ball head. In cases of damage, have the func-
tion checked by an authorized Audi dealer or
authorized Audi Service Facility.
@) Tips
— Block the wheels with chocks when parking
on inclines if the trailer is loaded.
— Having the vehicle inspected between the
inspection intervals is recommended if you
tow a trailer frequently.
— Avoid driving with a trailer during the vehi-
cle break-in period.
Driving with a trailer
Driving with a trailer requires extra caution.
Speed
Adhere to the legal speed limits. Follow the legal
regulations that are applicable in the country
where you are operating the vehicle.
As the speed increases, the driving stability of
the trailer decreases. Therefore you should not
exceed the maximum legal speed limit when
there are unfavorable road, weather, and/or wind
conditions. This especially applies when driving
downhill.
Hill
When you start driving uphill or downhill, trailers
may tilt or sway sooner than when driving ona
level surface. If small swaying movements have
already occurred, you can stabilize the trailer by
firmly braking immediately. Never attempt to
“straighten out” the trailer by accelerating.
Downshift before driving on hills to utilize the en-
gine braking effect > A\.
Brakes
When using a trailer with overrun brakes, first
brake gently then quickly. This reduces the risk of
jerking while braking if the trailer wheels lock up.
Engine coolant temperature
Pay attention specifically to the coolant tempera-
ture display when there are high outside temper-
atures, and when driving on long inclines
=> page 13. Shift to a higher gear in a timely man-
ner.

Z\ WARNING
Constant braking causes the brakes to over-
heat and can substantially reduce braking per-
formance, increase braking distance, or cause
complete failure of the brake system.

113

Checking and Filling

- If you notice that the hood is not latched
while you are driving, stop immediately and


N
INS —
close it, because driving when the hood is
not latched increases the risk of an accident.

/( \\. |
Fig. 162 Typical location of the reservoir and the engine oil filler opening (example)
Follow the safety precautions > page 214.
Washer fluid reservoir (>) > page 225
Jump start points: (+) under the cover
=> page 225, Charging the battery
= page 260, Preparation

Engine oil filler opening (7) > page 217

) Sticker* for engine oil specification
=> page 216
Coolant expansion tank (£) > page 221
Brake fluid reservoir (O)) > page 222

The coolant expansion tank and the engine oil
filling opening may be located in different places
within
the engine compartment, depending on
the engine version.
216
Engine oil
the engine oil level is too low
If you need to add engine oil, use an oil that is
listed on the sticker. The sticker is located at the
front of the engine compartment > page 216,
fig. 162.
If the recommended engine oil is not available, in
an emergency you may add a maximum of 1
quart (1 liter) of ACEA C3 or API SN engine oil
one time until the next oil change.
For more information on the correct engine oil
for your vehicle, contact an authorized Audi deal-
er or authorized Audi Service Facility. Have the oil
changed by an authorized Audi dealer or author-
ized Service Facility.

Checking and Filling

@) Note
Do not mix any additives with the engine oil.
Additives may cause engine damage that is
not covered by your New Vehicle Limited War-
ranty.
@ For the sake of the environment
— Before changing the engine oil, make sure
you can dispose of the used engine oil cor-
rectly.
— Engine oil must always be disposed of cor-
rectly. Do not dump it in the yard, in the for-
est, or in open water, river channels, or sew-
ers.
— Have your used engine oil recycled by bring-
ing it to a used oil collection site or contact
a gas station.
Cooling system
The engine cooling system is filled with a mixture
of purified water and coolant additive at the fac-
tory. This coolant must not be not changed.
The coolant level is monitored using the B indi-
cator light. However, occasionally checking the
coolant level manually is recommended.
Messages
& Turn off engine and check coolant level. See
owner's manual
The coolant level is too low.
Stop driving and switch the engine off. Check the
coolant level > page 221.
— If the coolant level is too low, add coolant
=> page 221. Only continue driving once the in-
dicator light turns off.
gg Coolant temperature: too high. Please let
engine run while vehicle is stationary
Let the engine run at idle for a few minutes to
cool off, until the indicator light turns off.
— If the indicator light does not turn off, do not
continue driving the vehicle. See an authorized
220
Audi dealer or authorized Audi Service Facility
for assistance.
/E| Coolant system: malfunction! Please turn
off engine
Do not continue driving, shut the engine off, and
switch the ignition off.
— See an authorized Audi dealer or authorized
Audi Service Facility for assistance.
Coolant additive
The coolant additive is made of anti-freezing and
corrosion protection agents. Only use the follow-
ing coolant additives. These additives may be
mixed with each other.




Coolant additive Specification
Gl12evo TL774L
G12++ TL774G
G13 TL774])

The amount of coolant additive that needs to be
mixed with water depends on the climate where
the vehicle will be operated. If the coolant addi-
tive percentage is too low, the coolant can freeze
and damage the engine.

Coolant Freeze protec-
additive tion
Warm min. 40% min. -13 °F
regions max. 45% (-25 °C)
Cold min. 50% max. -40 °F
regions max. 55% (-40 °C)

@) Note
— Before the start of winter, have an author-
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder climates.
— If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the en-
gine. If this happens, only use water and re-
store the correct mixture ratio with the
specified coolant additive as soon as possi-
ble.

8W1012721BB
Checking and Filling

— Only refill with new coolant.
— Radiator sealant must not be mixed with
the coolant.
— Due to the risk of engine damage, the cool-
ing system should only be refilled by an au-
thorized Audi dealer or authorized Audi
Service Facility. An authorized Audi dealer or
authorized Audi Service Facility can also pro-
vide you with important information about
the recommended coolant additive.


RAZ-0540


MIN

Fig. 164 Engine compartment - coolant expansion tank: @
cover; (2) markings
Follow the safety precautions > page 214, Gener-
al information.
Checking the coolant level
> Park the vehicle on a level surface.
> Switch the ignition off.
> Open the hood > page 215.
The coolant expansion tank for some engines is
located in the water drip tray under a cover. If
necessary, remove the cover that is located under
the windshield wiper on the front passenger's
side.
> Check the coolant level in the coolant expan-
sion tank > page 216, fig. 162 using the outer
markings (2) > fig. 164. The coolant level must
be between the markings (2) when the engine is
cold. When the engine is warm it can be slight-
ly above the upper marking.
>» Applies to: vehicles with 6-cylinder engine:
There is a float located in the coolant expansion
tank. Read the coolant level using the coolant
level float. When the engine is cold, the float
must be located between the MIN marking and
the edge of the filler opening on the coolant ex-
pansion tank.
Adding coolant
Requirement: there must be a residual amount of
coolant in the expansion tank >(@).
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled water is recommended.
> Allow the engine to cool.
>» Place a large, thick towel on the coolant expan-
sion tank cap.
> Push the release button @) © fig. 164 on the
cap and carefully turn it to the left until you
feel resistance > /\.
> Push the release button again and remove the
cap completely.
> Add coolant in the correct mixture ratio
=> page 220 up to the MAX marking. Or, in
vehicles with a 6-cylinder gasoline engine, the
float must be located between the MIN mark-
ing and the edge of the filler opening on the
coolant expansion tank.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
> Vehicles with 6-cylinder engine: if necessary,
press the float into the coolant expansion tank
using the cover.
> Turn the cap to the right to tighten it until you
feel resistance a second time.
Coolant loss usually indicates that there is a leak.
Immediately drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, coolant loss can re-
sult from the coolant boiling due overheating
and then being forced out of the cooling system.

Z\ WARNING
— The engine compartment in any vehicle can
be a dangerous area. Stop the engine and al-
low it to cool before working in the engine
compartment. Always follow the informa-
tion found in > page 214, General informa-
tion.
— Never open the hood if you can see or hear
steam or coolant escaping from the engine >

221

Checking and Filling


compartment. This increases the risk of
burns. The cooling system is under pressure.
When you no longer see or hear steam or
coolant escaping, you may open the engine
compartment with caution.
— When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
— Coolant additive and coolant can be danger-
ous to your health. For this reason, store the
coolant in the original container and away
from children. There is a risk of poisoning.
@ Note
Do not continue driving if the coolant expan-
sion tank is empty. Do not add any coolant,
because air could enter the cooling system
and damage the engine. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.


Brake fluid

BFV-0229)


Fig. 165 Engine compartment: cap on brake fluid reservoir
Follow the safety precautions > page 214, Gener-
al information.
Checking the brake fluid level
Read the brake fluid level on the brake fluid res-
ervoir > page 216, fig. 162. The brake fluid level
must be between the MIN and MAX markings
SA.
The brake fluid level is monitored automatically.
Message
Ga y @ Brakes: stop vehicle and check brake
fluid level
222
Stop the vehicle and check the brake fluid level.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
Changing the brake fluid
Brake fluid should be changed at regular inter-
vals. Have the brake fluid changed by an author-
ized Audi dealer or authorized Audi Service Facili-
ty. The authorized Audi dealer or authorized Audi
Service Facility will inform you of the replace-
ment intervals.

Z\ WARNING
— If the brake fluid level is below the MIN
marking, it can impair the braking effect and
driving safety, which increase the risk of an
accident. Do not continue driving. See an au-
thorized Audi dealer or authorized Audi
Service Facility for assistance.
— If the brake fluid is old, bubbles may form in
the brake system during heavy braking. This
could impair braking performance and driv-
ing safety, which increases the risk of an ac-
cident.
— The brake fluid in your vehicle must meet
the standard VW 501 14 and is available at
an authorized Audi dealer or authorized
Audi Service Facility. If this brake fluid is not
available, another high-grade brake fluid of
equivalent quality may be used, and it must
meet
the U.S. Federal Motor Vehicle Stand-
ard (FMVSS) 116 DOT 4, Class 6.

@) Note
— If the brake fluid level is above the MAX
marking, brake fluid may leak out over the
edge of the reservoir and result in damage
to the vehicle.
— Do not allow any brake fluid to come into
contact with the vehicle paint, because it
will corrode the paint.
Electrical system
If the =z or fm] indicator light turns on, there is a
malfunction in the generator, the battery, or the
vehicle electrical system.

8W1012721BB

Panoramic glass roof.................-. 44
Sliding/tilting sunroof...............005 43
Sunshade (rOOf)'s + ween a 2 wome a 2 cores va eee 44
WINdOWS « wscsese 2 6 ansree 6 o areene a a mmo 2 a aos 42
Gockpit diMMiNg:: « sw ss sews oa eee se es 52
Cockpit (OVEnVieW) « » wwe ss wee seen as cee 6
Collapsible spare tire...............0... 259
Collapsible tire
refer to Collapsible spare tire........... 259
GOlGrCOdG i: = «eee + xaen x 2 Bee a tee ees 277
Compact spare tite = sews y 2 emus se seems ¢ a oe 258
Compartments..............0-.02.0000- 78
Compass inthe mirror..............00005 57
Compliance ..... 0.0... cee eee eee eee 275
Conferencercallicics « o sosvese 0 0 semi a a mace ene 164
Configuration wizard « cccc.s «ews oo emi ae € 18
CONMECUiees ow smears 2 6 eames 3 He 2 6 HeaMEW © wens 169
Data plans........... ee eee eee eee 173
Data Privacyes ss ees sy ose s pees s 3 eee 271
Emergency:calll sess 2s mesic + ewrama » wenn « 174
Infotainment....................2005 169
Infotainment services... ..0... 6.0.5 cee 170
Online roadside assistance............. 175
Vehicle control services... cc... cee es T/L,
Connected devices
Device overvieW........-... 00-2 e eee ee 207
Connections
referto Media...............0-0- 195; 197
Consumer information.................. 272
Consumption
REGUGCING = gaan s 2 aams « noun 6 = Ree 4 5 ROR 99
Consumption (fuel) ........ 2.0.0 15
Contacts
Importing and exporting.............. 166
Updating inthe MMI.................. 166
also refer to Directory...............0. 163
Convenience key........ eee cece eee eee 30
Convenience closing..............++++- 42
also refer to Vehicle key................ 34
Convenience opening and closing
Windows or panoramic glass roof........ 42
Coolant temperature display.............. 13
Cooling system
Adding
coolant..............0.-. eee 221
Checking the coolant level............. 221
Coola Ntseiess 6 2 seine so sovsias eo cere @ x como 220 Cornering
lightics « «cose x 2 secs eo eerie oo ae 48
Cruise control system. ....... 000s ee eee 123
Cup Holdersiescs + ¢ saws s ¢ ees sy eee + e eww x 78
CUFPENECONSUMPLION ais < ease az new ox care 15
D
Data module

Serial number (IMEI) « weiss ss cncane a a wares @ 165
Data plans sss x 5 cows so ween 2s awn oo wee 173
Data Privacy’: « saws = = ses < ¢ sees x 2 eee ee 271;
Date wees : x ween 5 2 nes Fn ERR EES Eee 15
SOTUNG)s ¢ aston a 2 mas a i em @ 8 em & 4 ames 206
Daytime running lamps...............05- 48
Declaration of compliance...........0005 275
DEF CINStrUrMEnt ClUStED) |: saccu s x wows 5 x eae 11
Demo mode
refer to Presentation mode............. 186
Destination onthe map................. 179
DEtailSis : = mx = come 2 2 noe § E neR st me 179
Determining correct load limit........... 241
Digital compass .......... 00. eee eee eee 57
Dimensions............0..0.00..00000- 277
Dimming the exterior mirrors............. 53:
Dimming the rearview mirror............. 53
DineGtOr yin «+ secowi oo seme + o somes % & sense oo 5 163
Business card. ............00 2.00 e eee 163
Settings.......... 0.02.00. e eee eee 165
Display
Cleanings = » sees 5 = sews s = eews te eee ee 249
Displaying tooltips...............-..00- 18
Disposal
Distance Distance
warning .............0.0 eee ee 136
Doors
Child safety lock.............02.000000- 41
Door'contactiswiten s « sasay a « saws 4 & ara 4s SL.
Mechanically unlocking and locking....... 32
Driver information system................ 12
Drives
referto Media...........-...0-.. 195, 197
Drive select
refer to Audi drive select............... 106
Drive systeM.. 1... ee eee eee eee 98
Audi drive Select’: scws « ¢ swe ¢ v e@am ov oe 106
Drive system (message)................. 100