radiator cap AUDI Q5 2018 Owners Manual

Check ing and F illing
On -Board Diagnostic S yst em
Eng ine data can be read out at the On-Board D i­
agnostic System connection po rt using a special
testing device
¢ fig. 257 .
Indicator light
Ift hP ¢..ifi indicato r light b lin ks o r tu rns o n, there
is a malfunction that is caus ing poor emiss ions
qua lity and that could damage the catalytic con ­
verter.
Dr ive s low ly to an author ized Audi dealer or au­
thor ized Audi Se rvice Fac il ity to have the ma l­
f u nction co rrected.
The indicator l ight can also turn on if the fuel fi ll­
er cap is not closed correct ly
9 page 311.
_& WARNING
Incorrect use of the connection po rt fo r th e
On-Board Diagnostic Sys tem can ca use mal ­
functions, which can then result in accidents
and serious injuries.
- Only allow an authorized Audi dealer or au ­
thorized Audi Service Facility to read out the
engine data .
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
-
Fo r w ork in th e engi ne comp artm ent su ch as
c heck ing and filli ng flu id s, the re is a risk of in ­
jur y, scalding , ac cident s, and b urns . Fo r this
r easo n, follow all th e warning s and g enera l
sa fe ty preca ution s pro vided in the foll owin g in­
f o rm ation . Th e e ng ine comp artmen t is a d an­
ger ous ar ea .
9 &, .
_& WARNING
- T urn the eng ine off.
- Switch the ig nition off.
- Set the parking brake .
- Select the "P" selector lever pos it io n.
- let the engine coo l down.
314
- Never open the hood when there is steam or
coo lant escaping from the engine compart­
ment, because there is a risk that you could
be burned . Wait unt il no steam or coolant is
escaping.
- Keep children away from the eng ine com­
partment .
- Never sp ill fluids on a hot engine . These flu­
ids (such as the anti-freezing agent con­
tained in the coolant) can ignite .
- Avoid short c ircuits in the electrical system.
- When working in the engine compartment, remember that the radiator fan can switch
on even if the ignition is switched off, wh ich
increases the r isk of injury .
- Never open the cap on the coolant expan­
sion tank when the engine is warm . The
cool ing system is under pressure .
- To protect your face, hands, and arms from
hot steam or coolant, cover the cap w ith a
large cloth when open ing.
- Do not remove the engine cover under any
circumstances . This increases the risk of
burns .
- If tests need to be performed with the en­
gine runni ng, there is add itiona l danger due
to mov ing components (such as the r ibbed
be lt, alte rnato r and rad iato r fan) and from
the hig h-voltage ignition system.
- Do not unde r any ci rcumstances activate the
throttle inadvertent ly (for example, by hand
from the engine compartment) if the veh i­
cle is stationary but the engine is running
and a gear is engaged. Otherwise, the vehi ­
cle will start to move immediate ly and this
could result in an acc ident.
- Pay attention to the following warnings
when work on the fue l system is required:
- Do not smoke.
- Never work near open flames .
- Always have a working fire extinguisher
nearby.
- All work on the battery or electrical system in your vehicle can result in injuries, chemi­
cal burns, acc idents or burns . Because of
this, all work must be performed
only by an
author ized Audi dealer or author ized Audi
Serv ice Faci lity.

u co ..... N r-­N .....
~ 0 co
cooli ng system is not le aking, a loss can come
from the coolant boili ng through overheating
and being pushed out of the cooling system.
.&_ WARNING
-The cooling system is under pressure. Do
not open the coolant expansion tank cap
when the eng ine is hot. This inc reases the
risk of burns.
- The coo lant add itive and the coolant can be
dangerous to you r healt h. For this reason,
keep t he coolant i n the o rigi nal container
and away from children. There is a risk of
poiso ning.
- When working in the engine compartment,
remember t hat the radiator fan can sw itch
o n even if the ign ition is swi tched off, which
increases the risk of i njury.
@ Note
Do not add coo lant if the expansion tank is
empty. There may be a ir in the coo ling sys­
t em, wh ich increases t he risk of engi ne dam­
age . If this is the case, do not continue driv­
ing . See an authorized Aud i dea le r or a uthor ­
ize d Aud i Service Fac ility for assistance .
Brake fluid
-
N N ~ N
""
CX) IXl
Fig . 2 63 Engi ne compartme nt: cap o n brake fluid reservoir
Observe the safety p recautions 9 &. in Working
in the engine comportment on page 31 4.
Checking the brake fluid level
"' Read the brake fluid level on the brake fluid
reservoir ¢
page 316, fig . 260. The brake fluid
level must be between the MI N and MAX mark­
ings ¢,&. .
Chec king and Filling
The brake f lu id leve l is moni to red automatically .
Changing the brake fluid
Have the brake fluid changed regularly by an au­
t h ori zed Audi dea le r or a uthor ized Audi Service
F ac ility.
A WARNING
-
- I f the b rake fl uid level is below t he MIN
marking, it can impair the brak ing effect
and d riving safety, which increase the risk of
an accident. Do not continue dr iving. See an
author ized Audi dealer or author ized Audi
Serv ice Facility for assistance.
- If the b rake fl uid is old, b ubbles may form
in the brake system dur ing heavy bra king.
This wo uld impair braking performance and
driving safety, which increases the r isk of an
accident.
- To ensure the brake system functions cor­ rectly, only use brake f luids tha t comply
wit h VW standard S0 l 14 o r
F M VSS -116 DOT 4 .
(D Note
-If the brake flu id leve l is above the MAX
ma rking, bra ke f luid may leak o ut over the
edge of the reservo ir and resul t in damage
t o the vehicle.
- Do not ge t any brake fl uid on the vehicle
pai nt, because it w ill corrode the paint.
Battery
General warnings about batteries
Because of the complex power supply, all work
on batter ies such as d isconnecting, replacing,
etc., sho uld
only be performed by an authorized
Audi dealer or author ized A udi Se rvice Facility
¢ &_ .
The term "veh icle battery" refers to the 12 Volt
batte ry in your vehicle.
..,.
321