engine AUDI Q5 2014 Owner's Guide

88 On the road
case) which screens the radio sig nal. Electron­
ic devices such as ce ll phones can also inter­
fere with the rad io signa l.
Press brake pedal to start engine
This message appea rs if you do not press the
brake pedal to start the engine.
Shift to N or P to start engine
This message appears when attempting to
start the engine if the selector lever for the
automatic transmission is not in the P or N
position . The engine can o nly be started w ith
the selector in these pos itions.
I!) Is the key in the vehicle?
This message appears in a veh icle with Con­
venience key* if the master key is removed
from the vehicle w ith the engine running . If
the master key is no longer in the vehicle, you
cannot switch on the ignition after stopping
the eng ine and you also cannot start the en­
g in e again. Moreover, you cannot lock the ve­
hicle from the o utside with the key .
Shift to P otherwise vehicle can roll away.
Doors do not lock if lever is not in P.
This message appears fo r safety reasons
a long w ith a warning signa l. It appears if the
selector lever for the automatic transm iss ion
is not in the P position when switch ing off the
ig nit ion. Move the selector lever to the P pos i­
tion, otherwise the veh icle is not sec ured
against rolling away. You also cannot lock the
vehi cle using the locking button* on the door
handle or using the remote key.
Turn off ignition before leaving car
This message appears if the driver's door is
opened while the ignition is switched on . Al­
ways sw itch off the ignition if you are leaving
the vehicl e. See also
~ page 92 .
Shift to P and turn off ignition, otherwise ve­
hicle can roll away
This message appears if the driver's door is
opened while the ignition is switched on and
the selector lever is not in the P position. Shift
the selector lever into the P position and switch off the
ignition when you exit the vehi­
cle. Otherwise the vehicle could roll . See also
~ page 92.
Convenience key defective! Use ignition lock
This message appears if the engine must be
sta rted o r stopped using the ign ition key and
not the
I START ENGINE STOP I* button .
Electromechanical
parking brake
' Operation
The electromechanical parking brake replaces
the hand brake.
Fig. 100 Center conso le: Par king brake
.,. Pull on the switch~ fig. 100 to apply the
parking brake. The indicator light in the
sw itch ill uminates.
.,. Step on the brake pedal or the accelerator
pedal and press the switch at the same time
to re lease the parking brake. The ind icator
light in the sw itch goes out.
Your vehicle is equipped with an electrome­
chanical parking brake. The parking brake is
designed to prevent the vehicle from rolling
unintentionally and replaces the hand brake.
In add ition to the normal functions of a tradi­
tiona l hand brake, the electromechanical
parking brake provides various convenience
and safety funct ions .
When starting from rest
-The integral starting assist helps yo u when
driving by automatica lly releasing the park-
ing brake
~ page 89, Starting from rest. .,.

-When starting on inclines, the starting as­
sist prevents the vehicle from unintentional­
ly rolling back. The braking force of the
parking brake is not released until sufficient
driv ing force has been built up at the
wheels .
Emergency brake function
An emergency brake ensures that the vehicle
can be slowed down even if the
normal brakes
fa il
c::> page 90, Emergency braking.
Indicator light s
-If the parking brake is closed with the igni­
tion
s witched on the indicator lights come
on . (USA mode ls)/ . (Canada mode ls) in
the instrument cluster and the switch.
- If the parking brake is closed with the igni­
tion
s witched off the indicator lights come
on . (USA mode ls)/ . (Canada mode ls) in
the instrument cluster and the switch for
about 20 seconds.
A WARNING
If a drive range is engaged with the veh icle
stat iona ry and the engine running, you
must in no instance accele rate ca re lessly.
Otherw ise the vehicle will sta rt to move
immediately -risk of an accident .
(D Note
If the symbo l. in the display or the ind i­
cato r light .. (USA models) . (Cana­
da mode ls) in the instrument clus ter flash ­
es, the re is a malfunction in the brake sys­
tem . By pressing the
ISETI button, you can
bring up a driver message which explains
the malfunction in more detail.
If the driv­
er message
Parking brake system fault!
See owner's manua l
appears, there is an
operating malfunction in the park ing brake
which you should have repaired immedi­ ately by an author ized Audi dealer or other
qua lified workshop
c::> page 29.
@ Tips
- You can apply the pa rking brake at any
time -even w ith the ignition switched
'
On th e ro ad 89
off. The ignition must be turned on and
the brake pedal must be pressed in order
to release the parking b rake .
- Occasional noises w hen the parking
brake is app lied and released are normal
and are not a cause for concern.
- When the vehicle is pa rked, the parking
brake goes through a self -test cycle at
regu lar inte rva ls. Any associated noises
are normal.
Parking
"' Press the brake pedal to stop the veh icle.
"' Pull the sw itch
c::> page 88, fig. 100 to set
the parking b rake.
"' Move the selector lever to P.
"' Tu rn the engine off
c::> ,&. .
"'When on inclines or decl ines, turn the steer ­
ing wheel so that the vehicle will roll into
the cu rb if it begins to move.
A WARNING
-When you leave your vehicle -even if on­
ly briefly- always remove the ignition
key. T his app lies particularly whe n chil­
dren remain in the vehicle. Otherwise the
children could start the eng ine, release
the par king brake or operate elect rical
eq uipment (e.g. power w indows). The re
is the risk of an acc ident.
- When the veh icle is locked, no one -par­
ticularly not children should rema in in
the vehicle. Locked doors make it more difficult for emergency workers to get in­
to the vehicle -putting lives at risk.
Starting from rest
The starting assist function ensures that the
parking brake is released automatically upon
starting .
Stopping and applying parking brake
"' Pull the sw itch to app ly the parking b rake. .,.

Press brake pedal to release parking brake
This driver message appears when the switch
to release the parking brake was pressed. The
parking brake can only be released if yo u step
on the brake pedal and at the same time press
the switch or you automatically re lease the
parking brake with the starting assist
<=>page 89.
fpii Parking brake malfunction!
This driver message appears together with
the yellow
rm symbol when there is a parking
brake malfunction.
Start-Stop-System
Descript ion
A ppl ies to vehicles: with Sta rt-Stop-System
The Start-Stop -System can help increase fuel
economy and reduce CO
2 emissions.
In the Start-Stop-mode, the eng ine shuts off
automatically when the vehicle is stopped,
such as at a traffic light. The ignition remains
sw itched on during this stop phase. The en­
gine will be automatically restarted when
needed.
The last Start-Stop-System setting (o n/off us­
ing the button
lr.;, .. I) will be restored when the
ignition is turned on. The LED in the
1r.;, .. 1 but­
ton turns on when the Start-Stop-System is
switched off manually.
Basic requirements for the Start-Stop
mode
- The driver's door is closed .
- The driver's seat belt is latched.
- The hood is closed.
- The vehicle must have been driven faster
than 2.5 mph (4 km/h) since the last stop .
- A tra iler is not hitched to the veh icle .
A WARNING
- Never turn off the engine before the ve­
hicle has come to a complete stop. The
full function of the brake booster and the
power steering is not guaranteed. You
On the road 91
must use more force to turn or brake if
necessary. Because you cannot steer and
brake as you usually would, this could
lead to crashes and ser ious injuries.
- To reduce the risk of injuries, make sure
that the Start-Stop-System is turned off
when working in the engine compart­
ment
c:> page 93.
(D Note
Always switch off the Start-Stop-System
when driving through water
c:> page 93.
Starting /stopping the engine
App lies to vehicles: wit h Start -Stop -System
Fig. 101 Instrum ent cluster: Engine switched off (stop
phase)
.,. Slow the veh icle to a stop using the brake
and keep pressing the brake pedal. The en­
gine will switch off. The
ti] indicator light
appears in the instrument cluster disp lay
and - also appears in the trip com­
puter .
.,. When you take your foot off the brake ped ­
al, the engine restarts . The indicator light
turns off.
Additional information
T he engine will switch off in the P, D/S and N
positions as well as in ma nual mode. In the P
position, the engine will also remain off if you
take your foot off the brake pedal. The engine
starts again when you select another selector lever position and take your foot off the brake
pedal.
If you se lect the R position during a Stop
phase, the engine will start again .

92 On the road
Shift from D/S to P quickly to prevent the en­
gin e from starting unintentionally when shift ­
ing through R.
You can dete rm ine fo r yoursel f if the eng ine
will stop or not by reducing o r increasing the
amo unt of force you use to press th e brake
pedal. For example, if you only lightly press
on the brake pedal in stop-and and -go traffic
o r when turning , the engine will not switch off
when the vehicle is stationary . As soon as you
press the brake down harder , the eng ine will
switch off.
(D Tips
- Press the brake pedal during a stop
phase to keep the vehicle from rolling .
- The ign ition will turn off if you press the
I S TART ENGINE STOP I* button dur ing a
stop phase .
- The image in the display is slightly differ­
ent in some mode ls .
General information
App lies to vehicles: with Start -Stop -System
The standard S tar t-S top-mode can be cancel­
led for different system -related reasons .
Fig. 1 02 Ins trument clust er: E ngin e-S top tempo rari ly
una va ilabl e
Engine w ill not switch off
Before each stop phase, the system checks if
ce rt a in cond itions have been met. For exam­
ple, the engine w ill
not be sw itched off in the
following situations:
- The engine has not reached the min imum
required temperatu re for Start -Stop-mode. - The interior temperat
ure se lected by the A/C
system has not bee n reached.
- The outside tempe rature is extremely high/
low .
- The winds hield is being defroste d
o::::>pageBl.
-The parking sys tem* is switched on .
- The battery charge level is too low.
- The steering wheel is sharply turned or
there is a steer ing movement .
- After engaging the reverse gear .
- On sharp incl ine s.
er .
Eng ine automat ically r estarts
T he stop phase is interrupted in the follow ing
situations, fo r example . The engine restarts
without any action by the driver.
- The interior temperat ure varies from the
temperature se lected in the A/C system .
- The winds hield is bee ing defrosted
o::::> page 81.
- The b rake pedal is pressed severa l times in a
row.
- The battery charge level becomes too low .
- High power consumpt ion.
er .
Switching the ign ition off automatically
To p revent the battery from draining, the ign i­
t ion w ill switch off
automatic ally when all of
the following conditions have been met :
- The vehicle has already been d riven .
- The engine has been turned off by the Sta rt-
Stop -System .
- The d river 's doo r is opened .
- The d river 's seat belt is removed .
- The brake pedal is not pressed down .
- The vehicle is stationary.
In this case, the activated low beam will be re-
placed by the side marker lights. The s ide ..,.

marker lights will switch off after approxi­
mately 30 minutes or when you lock the vehi­
cle.
If the Start-Stop-System has not turned off
the engine or if you have switched the Start­
Stop-System off manually, the ignition will
not be automatically switched off and the en­
g ine will continue to run
i::> &. .
A WARNING
Never allow the engine to run in confined
spaces -danger of asphyxiation .
@ Tips
If you shift into the D/S or N positions af­
ter shift ing into reverse, the vehicle must
be driven faster than 6 mph (10 km/h) in
order for the engine to switch off again .
Switching the Start-Stop-System on/off
manually
Applies to vehicles: with Start-Stop-System
If you do not wish to use the system, you can
switch it off manually.
Fig. 103 Ce nter con sole : Star t-Stop-Sy stem butto n
.. To switch the Start -Stop-System on/off
manua lly, press the
1/A) "'I button. The LED in
the button turns on when the system is
switched off.
In vehicles witho ut the MMI *, the
1/A) "'I b utton
is found underneath the se lector lever.
(D Tips
If you switch the system off during a stop
phase, the engine will start again auto ­
matically.
On the road 93
Messages in the instrument cluster
display
Appl ies to vehicles: with Start-Stop-System
Start-stop system: deactivated. Please
restart engine manually
This message appears when specific condi­
tions are not met during a stop phase and the
Start-Stop-System will
not be able to restart
the engine. The engine mus t be started with
the key or with the
I START ENGIN E STOP !*
button .
Start-stop system: system fault. Function
unavailable
There is a malfunction in the Start -Stop -Sys­
tem . Drive the vehicle to an author ized repair
facility for servicing as soon as possible to cor­
rect the malfunction .
Transmission: Car may roll! Shift to park!
This message appears if the selector lever is
not in the P position when the driver 's door is
opened . You will also hear a warning tone.
Sh ift the selector lever to the P position. Oth­
erwise, the vehicle could roll.
Speed warning system
Overview
The speed warning system helps you to keep
your driving speed below a set speed limit.
T he speed warning system warns if the driver
exceeds a previous ly stored maximum speed.
A warning tone will sound as soon as the vehi­
cle speed exceeds the set speed by about
3 mph (3 km/h) . At the same time, a warning
symbol appears in the display . The symbol 's
appearance might be different in some mod ­
els .
The speed warning system has
two warning
thresholds
tha t function independen tly of
each other and that have somewhat different
purposes :
Speed warning 1
You can use speed warning 1 to set the m axi­
mum speed while you are driving . This setting ..,.

Hybrid
Hybrid drive
Introduction
Applies to vehicles: with hybri d dr ive
General information
The hybrid drive is a combined drive concept
that automat ically switches between combus­
tion engine and e lectric dr ive types or com­
b ines them.
All work on h igh voltage systems is intended
only for high voltage technicians and may only
be performed by authorized service facilities
in accordance with Audi regulations.
The high voltage system is composed of the
following h igh voltage components : the high
voltage battery, the power electronics, the
e lectric motor, the high voltage A/C compres­
sor and the orange high voltage wiring.
High voltage battery
The high voltage battery is located in the lug­
gage compartment underneath the cargo
floor. You do not need to perform any mainte­
nance work on the high voltage battery . Addi ­
tional information about the high voltage bat­
tery can be found under
r=> page 105.
The high voltage battery serv ice plug is a lso
found underneath an orange cover under the
cargo floor. The service plug is provided on ly
for use by service personnel and must not be
removed by others who are not trained to use
it .
A WARNING
The voltage in the high voltage system is
life-threatening. Touching a damaged high
voltage component can result in a fatal
electric shock. The components in the high
voltage system are marked with a warn ing
label which warns against the high volt­
age.
- Never perform work on orange high volt­
age cables or on high voltage compo­
nents . On ly authorized repair facilities
Hybr id 97
that are certified may perform work on
the high voltage system.
- Never open or remove the service plug
cover in the center of the cargo floor.
- Never damage, alter or remove the or­
ange high voltage cable or disconnect it
from the high voltage system.
- Audi regulations must be followed dur­
ing all work performed on the high volt­
age system and high voltage compo­ nents.
A WARNING
While in electric drive mode, the vehicle
produces considerably less idling, driving
and operat ing noise than when the com­
bustion engine is running. This may make
it difficult or impossible for others such as
pedestrians and children to hear and no­
tice the vehicle when it is in electrical drive
mode. This can lead to co llisions and inju­
ries, for examp le in low traffic areas, when
maneuvering or when driving in reverse.
A WARNING
-
-
Never leave the vehicle unattended while
in the drive ready mode. The vehicle could
begin moving if the accelerator pedal is
pressed, even if the combustion engine is
switched off . This may cause collisions and
severe or fata l injuries. When the vehicle
enters drive ready mode, the status mes­
sage
ybr I P cl, appears briefly in the in­
strument cluster disp lay and the needle in
the power meter points to
READY
r=> page98 .
-When exiting the vehicle, make sure the
selector lever is in the P position, the ig­
nition is switched off and the hybrid sys­
tem is deactivated .
(D Note
-The high voltage system can be damaged
if the vehicle underbody comes into con­
tact with the ground . Immediate ly drive
your vehicle to an authorized repair fa­ cility and have it inspected.

98 Hybrid -Do not transport fluids in open contain­
ers in the luggage compartment. Spilled
fluids can seep underneath the cargo
floor. This can damage the high voltage
system.
Starting the vehicle
App lies to vehicles: with hybrid drive
The vehicle is started and turned off either
with the ignition key~
page 83 or with the
I START ENGIN E STOP ! button* ~ page 86 in
the same way as a conventional vehicle .
When starting the vehicle, the needles in the instrument cluster move upward briefly .
When the vehicle enters drive ready mode,
the status message
hybrid ready appears
briefly in the instrument cluster display and
the needle in the power meter points to
READY ~ page 98.
Depending on the operation mode of the hy­
brid system, there are two possible drive
ready modes after the vehicle has been start­
ed:
Power meter overview
Applies to vehicles: with hybrid dr ive
Drive ready mode with combustion engine
If the operating requirements~ page 100 for
electric drive mode are
not met, the combus­
tion engine starts the vehicle as usual. You can start driving as usual.
Drive ready mode with the electric motor
If the operating requirements~ page 100 for
the electric drive mode are met, the combus­
tion engine remains off after starting the ve­
hicle.
(0 Tips
To prevent the 12 volt battery from dis­
charging, never leave the vehicle parked in
the drive ready mode. Remove the key
from the ignition or press the
I START ENGINE STOP! button* . When
leaving the vehicle always take the key
with you.
The power meter shows the hybrid drive condition and the availability of the hybrid system.
Fig. 107 Power meter overv iew
An economical driving and recuperation range
is shown in green. A driving range that is not
economical is shown in orange. In addition, the battery status
provides information about
the high voltage battery charge status.
lill-

(!) Fuel efficient driv ing within the
comb ustion engine's partia l
l oad range
@ System limits fo r electric d riving
i n the EV mode
® Elect ric driving or d riving w it h
the combustion engine (EFFI -
CI ENCY)
© Vehicle d rive ready (READY)
® H igh vo ltage bat tery c ha rge sta -
tus
® Recuperation (CHARGE)
0 Dr iving w it hi n the combus tion
engine's fu ll loa d range
® 100% combust io n engine
® Boost ing -the elect ric e ngine
assists the combus tion engine
( B OOST)
@ Engaging the conventiona l
brakes w ith recuperat ion
@ Vehicle not drive ready ( OFF)
@ EV mode active
The needle rema ins at
OFF when the igni tion
is tur ned on. W hen the veh icle en ters drive
ready mode, t he stat us message
hybrid ready
ap pears briefly in the instrument cluster dis ­
p lay and the needle in the power meter po ints
to
READY .
Indicator lights and messages
Applies to vehicles: with hybrid drive
The indicator lights in the instrument cluste r
b link or t urn on . Th ey i ndicate fu nctions o r
malfunct ions .
W ith some ind icator lights, messages may ap­
pear and a warning tone may sound. Also note
the indicator lights in c::,;,
pag e 27.
Press brake pedal to start vehicle
This message appea rs if you do not press the
brake peda l when starting the vehicle.
Hybrid 99
Shift to N or P to start vehicle
T his mess age appears if the se lector lever for
the automatic t ransmission is not in t he N or
P positions when starting the vehicle.
- Hybrid drive: System fault! Power
brakes, steering malfunction possible
I f the indica tor ligh t turns on and this mes ­
sage a ppears, t here is a ma lf u nction in the hy­
bri d system. The brake booster and the power
steering may stop working. Stop the vehicle i n
a safe l ocat io n as soo n as poss ible.
You may cont in ue dr iving if the indicator light
turns
off afte r start ing the ve hicle severa l
times. Dr ive to an a uthorized repa ir facility
immediately to have the malfunct ion correct­
ed .
EHithjj,j Hybrid drive : Sy stem fault!
Contact dealer
If the indicator light turns on and this mes­
sage appears , there is a malfunct ion in the hy­
br id system . Drive to a n author ized repair fa ­
c ili ty immediat ely to hav e th e m alfunc tion
corrected.
Ill Hybrid system: Performance
restricted. Please contact dealer
If th e i ndica to r light turns on and this mes­
sag e appea rs, there is an engine contro l ma l­
f unct io n .
The @B indi cator light in t he instr u­
m ent cluster also tur ns on. The engine ou tput
i s re duced. Drive to yo ur autho rize d Au di dea l­
er or qualifie d repair facility immediately to
have the malfunct io n corrected .
Hybrid drive deactivated. Please restart
engine manually.
Th is message ap pears if the high vo ltage bat­
te ry charge leve l has fallen below a certa in
range or if the ignition key is no longer inside
the ve hicle for ve hicles with the convenience
key *.
Start the eng ine with e it h er the ignitio n key
¢page 83 or with the !STAR T EN GINE STOPI
button* c::> page 86.

100 Hybrid
Hybrid battery: Low battery charge.
B attery will be charged while driving.
This message appears if the high voltage bat­
tery charge level has fa llen below a certain
range. If this message turns off after a little
while, the high voltage battery charged
enough while dr iv in g.
If the message does not turn off, have an au­
thorized repair fac ility correct the malfunction
as soon as possible.
EV mode is currently unavailable .
This message appears if the conditions
¢
page 100 for enhanced e lectric driving are
not met. Try again at a later time.
Hybrid functions and operating modes
App lies to vehicles: with hybrid dr ive
Fig. 108 Center console: c:f,V button
.,. To turn on EV mode, press the 14'1 button.
The indicator light in the button will turn
on . The. indicator light a lso turns on in
the instrument cluster display.
The functions and operating modes described
be low are se lected automatica lly by the vehi­
cle control system, depending on the vehicle
operat ing status. This ensures that the vehicle
is always in the correct operating mode. One
exception is the enhanced electric driving
mode (EV mode), which is activated by the
driver
¢pag e 100.
Driving with the combustion engine
The vehicle is powered by the combustion en­
gine. The h igh voltage battery is charged si­
multaneously, if needed.
Full acceleration (boost)
In full acceleration, the vehicle is powered by
both the combustion engine and the electric
motor . This operating mode is called
Boost
and is on ly available for a short amount of
time because it uses so much energy. Availa ­
bility depends on the high voltage battery
charge level.
The boost operating mode is activated by
pressing the accelerator pedal all the way
down.
Electric driving
The vehicle can be driven completely electri­
ca lly depending on the high vo ltage battery
charge level and the driving resistance. The
combust ion eng ine turns off at that t ime.
The combustion engine starts when accelerat ­
ing or when the high voltage battery charge
level drops be low a certain threshold. The ve­
hicle resumes e lectric driving once the accel­
eration and the high voltage battery charge
level permit.
Enhanced electric driving mode (EV
mode)
Pressing the l~ I button ¢ fig. 108 can extend
the usual limits on electric driving so that you
can always drive in electric mode, if the condi­
t ion of the e lectr ica l system permits . The op­
erating mode is then set to maximum electric
drive @,@ ¢
page 98, fig. 107. It can be
driven complete ly elec trically for up to 1.8
miles (3 km) at a constant 37 mph (60 km/h) .
T he following conditions must be met to act i­
vate the enhanced e lectr ic drive:
- The high voltage battery must be suffic ient­
ly charged.
- The temperature of the 12 volt batter ies
and the hig h voltage battery must be suffi­
cient.
- The vehicle speed must not be higher than
62 mph (100 km/h).
- The transmission must not be in tiptronic
mode.

-Offroad mode and hill descent assist must
not be turned on
c::> page 198.
The combust ion eng ine tu rns on and inter­
rupts
the enhanced electric d rive mode when
the vehicle is accelerated. The gray indicator
light
l:!I also turns on in the disp lay. The en­
hanced electric drive mode resumes automati ­
cally once acceleration stops.
The enhanced e lectric drive mode is
deactivat­
ed
if at least one of the following conditions is
met :
- Th e ign ition is turned off.
- Th e
1.:1"1 button is pressed again.
- The high voltage battery charge level is low .
- The veh icle speed is higher than approxi -
mately 62 mph (100 km/h).
- The
S selector lever position or tiptronic
mode is selected .
- Offroad mode or hill descent assist is
switched on .
T he
ld" I button must be pressed to reactivate
it .
Start-Stop function
The combustion engine is operated on ly as
needed. Generally, the combustion engine
turns off when the vehicle is stationary and
the high voltage battery powers the electrical
vehicle systems.
The purpose of automatica lly shutting the
combustion engine off in hybrid drive mode is
to save fuel. All of the important veh icle sys­
tems, such as steering, brakes and the A/C
system, cont inue to remain active. In some
cases, systems may require the combustion
engine to cont inue running when the vehicle
is stationary. When dr iv ing in congested traf­
fic for long per iods of time, the combustion
engine w ill cycle on when the vehicle is sta­
tionary to keep the high voltage battery
charged.
Gliding
I f the gas pedal is not pressed and the D posi­
tion is selected, the combustion engine re-
Hybrid 101
mains turned off up to speeds of approxi ­
mately 99 mph ( 160 km/h) . Driving conserva­
tive ly like this can reduce fuel consumption .
Energy recovery (recuperation)
When braking, the elect ric motor will act as a
generator creating e lectric energy that is then
stored in the high voltage battery. This also
occurs when the ve hicle is coasting or driving
downhi ll. The combustion engine is automati­
cally turned off in this case.
The vehicle is braked with the electric motor
by applying ear ly and even pressure to the
brakes and using short pedal movements
¢ page 98, fig. 107 @. By doing this, a large
amount of the kinetic energy is recovered and may be stored as electric energy in the high
voltage battery. During heavy braking, the
convent ional brakes are also act ivated
c::> page 98, fig. 107 @.
The energy recovery is shown in the MMI dis­
play
c::> page 104 .
Automatic start of the combustion engine
Various operating conditions cause the com­
bust ion engine to start automat ically :
- The high voltage battery charge leve l is low.
- The temperature of the comb ustion engine
is low.
- The temperature of the catalyt ic converter is
low .
- The power output needed for the A/C sys-
t em is high.
- The vehicle speed is hig h.
- The vehicle acceleration is high.
- The inclin e is steep.
- High charge level for the high voltage bat-
tery when coasting. In th is case, the h igh
voltage battery cannot absorb any mo re en­
ergy and so the electric motor cannot slow
down the veh icle. The combustion engine
tu rns on (engine brake). In this situation the
h igh voltage battery will show a Ma x charge.