2017 AUDI A5 CABRIOLET traction control

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Off-Road driving?
Your Aud i does not have enough g ro und clear­
ance to be used as an off -road vehicle. It is there ­
fore best to avoid roug h tracks and uneven ter­
rain as much as possible. A lso refer to
¢ page 175.
_&. WARNING
Always adjust you r driving to road and t raff ic
conditions. Do not let the extra safety afford­
ed by all-wheel drive tempt you into tak ing
extra risks.
-Although the all-whee l dr ive is very effec­
t ive, a lways remember that bra king capac ity
is limited by tire traction . Yo u should there­
fore not d rive a t exc ess ive speeds on icy or
slippery road su rfaces.
- On wet ro ad surfaces, be caref ul not to drive
too f ast be cause the fro nt wheels co uld be­
gin to slide on top of the w ater ( aquaplan ­
ing). If this sho uld o ccu r, you w ill have no
warning from a sud den increase in eng ine
speed as with a front-whee l dr ive vehicle .
Always drive at speeds wh ich are su ited to
the road cond it ions -risk of crash.
Energy management
Starting ability is optimized
Energy management controls the distribution of
electrical energy and thus optimizes the availa­
bility of electrical energy for s tarting the engine.
If a veh icle wit h a conventional energy system is
not driven for a long per iod of t ime, the battery is
d ischa rged by idling current consumers (e.g. im­
mo bilizer). In cert ain cir cums tan ces it c an result
i n there be ing insuff ic ient ene rgy available to
start the engine.
I ntell igen t energy management in your veh icle
h andles the distr ib ution of ele ct ric al ene rgy.
S tarting ab ility is mar ked ly imp roved an d the l ife
of the batte ry is extended.
B asically, e nergy management consis ts of
bat­
tery diagno sis, idling curr ent management
and
dynamic energy management .
Intelligent Technology
Battery diagnosis
Battery diagnos is con tinuously dete rmi nes the
state o f the bat tery . Sensors determine battery
vo ltage, battery c urrent and batte ry tempera­
tu re. This determines t he current state of charge
and the power of the battery.
Idling current management
Id ling cur rent management reduces ene rgy con­
s u mption whi le the vehicle is standing . With the
ignition switched off, it contro ls the energy sup­
ply to the vario us electrical components . Data
from battery d iagnosis is cons idered.
Depend ing on the ba ttery's s tate of charge, indi ­
vidual consumers are gradually turned off to pre­
vent excess ive discharge of t he battery and thus
mainta in starting capab ility.
Dynamic energy management
While t he vehi cle is being d riven, dynami c energy
management dis trib utes the energy generate d
according to the needs of the individual compo­
nents. It regulates consumption, so that more
electrical e nergy is not being used than is being
generated and ensures an opt imal state of
charge for the battery .
(i) Tips
-But even ene rgy management cannot neg­
ate the lim its of physics. Consider that the
powe r and life of a battery are lim ited.
- If starting ab ility is threatened, the indica ­
to r li ght (•) appears¢
page 14.
What you should know
The highest priority is given to maintaining start­
ing capability.
The battery is severe ly taxed in short-distance
driv ing, in city traffic and dur ing the cold time of
year. Abundant e lectrica l energy is required, but
o n ly a little is generated. It is also c ritical if the
engi ne is not running and electrical components
are tu rned on . In this instance energy is being
co nsumed bu t no ne is being ge nerated. .,,.
173

Wheels
and a special procedure. You must not 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, see ¢
page 229, After changing a
wheel .
-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 Aud i
Service Facility . Never repair or disassemble
rims yourself, because this inc reases the risk
of an accident.
Winter tires
Winter tires s ignificantly improve the vehicle's
handling when driving in winter conditions . Be­
cause of their construction (width, compound,
tread pattern), summer tires provide l ess trac­
tion on ice and snow.
.,. Use winter tires on all four wheels.
.,. Only use winter tires that are approved for your
vehicle.
.,. Please note that the maximum permitted
speed may be lower 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 install ing wheels
q page 217.
The effectiveness of winter tires is reduced great­
ly when the tread is worn down to a depth of
0 .157 inch (4 mm). The character istics of winter
tires also decrease greatly 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
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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 may be per­
mitted.
Snow chains
Snow chains improve traction in the snow .
.,. Only install snow chains on the front wheels.
This applies also to vehicles with all wheel
drive* .
.,. Check and correct the seating of the snow
chains if necessary after driving a few feet. Fol­
low the instructions from the manufacturer.
.,. Note the maximum permitted speed when dr iv­
ing with snow chains. Do not exceed 30 mph (SO km/h).
Snow cha ins not only improve the
driving in win­
ter road conditions, but also the
braking .
Use of snow chains is only permitted with certain
rim/tire combinat ions due to technical reasons .
Check with an author ized Audi dealer 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 inch (13.5 mm) in height, includ­
ing the chain lock.
You must remove the chains when driving on
roads that are
free of snow . When roads are free ..,.

Wheels
Uniform tire quality grading
- Tread wear
- Traction AA A B C
- Temperature ABC
Quality grades can be found where applicable on
the tire side wall between tread shoulder and maximum section width
c::> page 207, fig. 178.
For example: Tread wear 200, Traction AA, Tem­
perature
A.
All passenger car tires must conform to Federal
Safety Requirements in addition to these grades .
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov ­
ernment test course.
For example, a tire graded 150 would wear one
and one half (11/2) times as well on the govern­
ment course as a tire graded 100.
The relative performance of tires depends upon
the actual conditions of their use, however, and may depart significantly from the norm due to
variations in driving habits, service practices and
differences in road characteristics and climate.
Traction
The traction grades, from highest to lowest, are
AA, A, Band
C. Those grades represent the tire's
ability to stop on wet pavement as measured un­
der controlled conditions on specified govern­
ment test surfaces of asphalt and concrete. A tire
marked C may have poor traction performance
¢ &. .
Temperature
The temperature grades are A (the highest), B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions on
a specified indoor laboratory test wheel.
Sustained high temperature can cause the mate­
rial of the tire to degenerate and reduce tire life,
and excessive temperature can lead to sudden
tire failure
c::> .&. .
224
The grade C corresponds to a level of perform­
ance which all passenger car tires must meet un­
der the Federal Motor Vehicle Safety Standard
No . 109 . Grades Band A represent higher levels
of performance on the laboratory test wheel than
the minimum required by law.
A WARNING -
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration, cor­
nering, hydroplaning or peak traction charac­
teristics.
A WARNING , ~ -
The temperature grade for this tire is estab­
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla­
tion, or excessive loading, either separately or
in combination, can cause heat buildup and
possible tire failure.
A WARNING
Temperature grades apply to tires that are
properly inflated and not over or underinflat­
ed.
Tire pressure monitoring system
(l) General notes
App lies to : vehicles wit h tire pressure mo nitori ng syste m
Each tire, including the spare (if provided),
should be checked monthly when cold and inflat­
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
the vehicle placard or tire inflation pressure la­
bel, you should determine the proper tire infla­
tion pressure for those tires) .
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system
(TPMS) that illuminates a low tire pressure tell­
tale when one or more of your tires is significant- ly under-inflated. Accordingly, when the low tire
pressure telltale illuminates, you should stop and ""