engine AUDI A3 SEDAN 2018 Service Manual

e-tron
for the high voltage battery can lead to seri­
ous damage and/or a decrease of the capacity
void coverage under the New Vehicle Limited
Warranty.
Starting/driving the vehicle
A pp lies to: ve hicles w ith plug- in hybrid drive
The vehicle is started and stopped with the
IS TAR T ENGINE STOP I button . Please also read
the information under
Q page 76, Starting the
engine.
Establishing drive ready mode
See Q .& in Introduction on page 92.
Requirement: a charging cable must not be con­
nected to the vehicle
Qpage 115 and the selec ­
tor lever must be in the "P" or
"N" position.
- Press the brake peda l.
- Press th e
I START ENGINE STOPI button .
When the veh icle enters drive ready mode, the
status message
e-tron READY appears briefly in
the instrument cluster display and the needle in
the powe r meter points to
READY Q page 95.
Driving
The vehicle starts with the electr ic motor after
establishing the dr ive ready mode and if the con­
ditions for electric drive mode have been met
Qpage98.
The cond itions to drive are essentially the same
as for the automat ic transmission
Q page 83 .
You and your passengers should anticipate the
possibility of a sporty acceleration.
Ending drive ready mode
- Place the selector lever in the P position.
- Switch the ign ition off with the
I START ENGINE STOP ! button.
Vehicle sound1>
The vehicle generates an electronic engine sound
so that you r vehicle can be heard from the out­
side when in electr ic drive mode. The veh icle
l) Not available in all markets.
94
sound automatically fades out at higher speeds
when the sounds from the tires and wind start in­
creasing .
Switching the ignition on/off
You can switch the ignition on without establish­
in g drive ready mode.
- To switch the ign ition on or off, press the
!START ENGINE STOPI button. Do not press the
brake pedal while do ing this.
When the ignition is switched on, the needle
stays pointed at
OFF CD Q page 95, fig. 98 or
OFF is displayed CD~ page 95, fig. 98.
No indicator lights stay turned on when the igni­
tion is switched off.
Ignition is switched off automatically
To prevent the vehicle battery from draining, the
i gnition will switch off automatically under the
follow ing cond it ions:
- The vehicle has already been driven.
- The vehicle is stationary.
- The gasoline engine is not runn ing.
- The driver's door is opened.
- The driver's safety belt is unbuckled .
- The brake pedal is not pressed.
In this case, the activated low beam is replaced
by the parking light. The message
Side marker
lights will switch off automatically in 30 mi­
nutes. See owner 's manual
appears in the instru­
ment cluster display . The parking lights will
switch off after approximately 30 minutes or
when you lock the veh icle.
If the gasoline engine was not stopped, the mo­
tor continues running and the ignition does not
automat ically switch off
Q & .
A WARNING
To reduce the risk of poisoning, never allow
the engine to run in confined spaces .
-

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For additional information, see ¢ page 17, Trip
computer (Audi virtual cockpit).
~ Applies to: vehicles with analog instrument
cluster: Open the
Tachometer display by turn­
ing the left thumbwheel on the multifunction
steering wheel.
When opening the driver's door, the charge level is shown in the instrument cluster when the igni­
tion is switched on, or the charge level and the
remaining charge time for the high -voltage bat ­
tery is displayed when charging .
The power meter gives feedback about the partic­ ular accelerator pedal position and shows the
current demand
(%) for electricity or fuel regard­
less of which engine is active.
An economical driving and recuperation range is
shown in green
¢ page 99, Energy recovery (re­
cuperation) .
A driving range that is not economi­
cal is shown in orange .
(D Vehicle not drive ready (OFF)
@ Recuperation (CHARGE)
@ Vehicle ready to drive (READY) or
coasting
© Efficient driving with electric motor
and/or gasoline engine (EFFICIEN­
CY)
® Economic driving while the electric
motor or gasoline engine is in the
partial power range
@ Driving in full power range
0 100% output
@ BOOST: the electric motor supports
the combustion engine
® High-voltage battery charge level
@ EV mode: active a=,v, standby, a=,v
or currently unavailable. ~v
@ Speed limit for electric driving in EV
mode (80 mph/ 130 km/h)
Indicator lights and messages
Applies to: vehicles with plug -in hybr id drive
Also note the indicator lights in¢ page 20.
The gasoline engine is active when the II'§] indica­
tor light turns on.
96
•• Drive system: system fault! Safely park
vehicle
There is a malfunction in the plug-in hybrid sys­
tem. The brake booster and the power steering
may stop working. Stop the vehicle immediately
or as soon as possible. Park the vehicle in a safe place outdoors that is not near buildings, roof
overhangs, carports or similar structures. Switch
the ignition off. Have the problem corrected by
an authorized Audi dealer or authorized Audi
Service Facility.
•• Electric drive: overheated! Safely stop
vehicle and check coolant
The coolant level is too low or the coolant tem­
perature is too high.
Stop the vehicle in the outdoors as soon as it is
safely possible. Switch the ignition off.
Read the important safety
precautions ¢.& in
Coolant on page 103
and check the coolant level
¢page 102.
If the coolant level is OK, the malfunction may be
caused by the system overheating. Let the vehi­
cle's electric drive system cool down for some
time .
If the message turns off after cooling down and
switching the ignition back on, you can continue
driving. Contact an authorized Audi dealer or au­
thorized Audi Service Facility immediately to have
the malfunction corrected.
If the indicator light stays on, contact an author­
ized Audi dealer or authorized Audi Service Facili­
ty.
lltll Drive system: system fault! Please con­
tact workshop
There is a malfunction in the plug-in hybrid sys­
tem . Drive to an authorized Audi dealer or au­
thorized Audi Service Facility immediately to have
the malfunction corrected.
1/1111 Drive system: system fault! Restart not
possible. Please contact workshop
There is a malfunction in the plug-in hybrid sys­
tem. Do not open the hood. Drive to an author- ized Audi dealer or authorized Audi Service
.,,_

LL co ..... N
" N ..... 0 N > co
Faci lity immedi ately to have t he m alfunc tion cor ­
rected .
IIJII Battery temperature too low . Vehicle
cannot be started. See owner's manual
Th e outside tempe rature is too low . The vehicle
can no longe r st art at tempe ra tur es below - 18 °F
(- 28 °C). Con ta ct an a utho riz e d Audi d ealer o r au­
thor ized A udi Se rvice Fac ility.
POWER LIMIT Warning! Limited performance
If t he indicator lig ht turns on and th is message
appears , th ere may be a n engine co ntro l ma l­
f u nction. The
[3B* in d icator light in t he instr u­
men t clus ter also tur ns on . The engine ou tput is
r educed . Dr ive to a n au thor ized Audi dealer or
a uthor ized Audi Se rvice Facili ty i mme diate ly to
ha ve the m alfunct ion co rre cted.
II e-tron mode: EV currently unavailable
This message appea rs whe n the 1.,,..1 button is
p ressed and the con ditions for elect ric d rive
mode a re not met.
Ill Vehicle sound: malfunction! Pedestrians
cannot hear vehicle . Please contact Service
The vehicle sou nd is no longer f unctio ning. D rive
e xtremely care fully, since ot he rs may not hea r
your veh icle. Dr ive to an author ized Audi dealer
or author ized Audi Se rvice Facility immed iate ly to
have the ma lf u nction corrected .
Range display
Applies to: ve hicles with plug-in hybrid drive
Fig. 99 Instr ume nt cluste r: ra nge disp lay
The range can be disp layed in the trip computer .
You can access t he range disp lay w ith the multi­
fu nction steeri ng wheel buttons
c:;> page 13 , Mui-
e-tron
ti function s teeri ng whee l plus or r:::;> page 1 6, M ul­
tifunction steering wheel.
D epen ding on t he sele cte d plug -in hy brid mo de,
t he disp la y g ives the foll owing informa tion:
(D Remaini ng e lec tric m otor range or comb ined
total range
@ Remaini ng gasoline eng ine range
® R emaini ng e lectr ic moto r ra nge
(D Tips
The va lues given are b ase d on t he lates t con­
sum ption va lues .
Range and statistics
Applies to: vehicles with plug-in hybrid drive
Fig. 100 In fotainmen t system : e -tro n range mo nitor
Opening the range monitor
The range monitor in the Infotainment system
shows the relat ions hip between ene rgy co nsum­
ers and elect ric range
c:;> fig. 100 . The three larg­
est ene rgy consu mers w ill be l ist ed in sequent ia l
o rder. Sw itching off the cons umers increases the
elect ric range .
.. Select in the Infotai nment system: I MENU ! but­
t o n
> Vehicle > left con trol button > Range &
statist ics > Range .
Opening the statistics
The stat istics in the In fotainment system show
t h e d ista nces dr iven without emissions (electric)
and with fuel. The values are taken from the
sho rt-term memory and long-te rm m emory of
the on-board comp ute r.
.. Select in the Infotai nment system: I MENU ! but­
ton
> Vehicle > left con trol b utton > Range &
statistics > e-tron statistics . IJ,,
97

e-tr on
~ To switch between the short -term and long ­
term memory, turn the left thumbwhee l on the
multifunction steering whee l.
Setting plug-in hybrid drive modes
Applies to: vehicles with plug-in hybrid drive
You con select between one electric mode and
two hybrid modes .
Fig . 1 01 Center console: but ton c:=!i'
~ Press the 14• 1 button repeatedly until the de­
s ired dr ive mode is d isplayed in the instrument
cluster/Infota inment system display .
You can change modes when the vehicle is sta ­
tionary or while driving . If the veh icle operat ing
conditions will not allow you to set the mode
manually , the last act ive mode is se lected.
The active mode is displayed the first t ime the
14' 1
button is pressed .
,cf,V e-tron mod e: E V -EV mode is electric driv ing
only . EV mode is active at the beginning of every
tr ip depend ing on the operating condition of the
veh icle . T he LED in the
14"1 button turns on .
The. indicator light also appea rs in the instru­
ment cluste r. T he gasoline eng ine rema ins
t urned off, as long as the cond it io n s for electr ic
driving are
met ¢ page 98, Conditions for elec ­
tric driving.
~ e- tron m ode : H ybrid -the electr ic motor and
t he gasoline engine wo rk efficien tly toge ther in
hybrid mode . The high -vo ltage battery will be
used to the fullest extent when t his mode is
switched on. This mode is best suited for long
d istances .
.. ~ e -t ro n mode: Batt ery Hold -the electric mo­
tor and the gasoline engine work together in Bat -
98
tery Hold mode, so that the high -voltage battery
charge level is maintained as much as possib le .
(D Tips
- Applies to: Battery Hold mode: th e h igh ­
vo ltage battery charge level can sti ll de­
crease depending on the driving behavior.
- If you select the sport driving mode "S"
when in EV mode, the Battery Ho ld mode is
automatically selected.
- If the
14"1 ¢ page 98 button is pressed w hile
in sport driving mode "S", the transmission
switches automatica lly to normal mode "D".
- When temperatures are below approxi ­
mate ly
14 °F ( -10 °C), the vehicle heat out­
put in EV mode is reduced in order to attain
higher ranges. If the windows fog up or a
hig her heat output is desired, switch on the
Hybrid or Battery Hold mode .
Conditions for electric driving
Applies to: vehicles with plug-in hybrid drive
The EV mode ca n only be switched o n if the fol­
l ow ing condit ions are met:
- The charge level of the high-voltage battery
must be sufficient .
- The temperature of the high-voltage battery
must be adequate (outside temperatures not
below approx imately
14°F / -10°( and not
above
1 04°F / 40°C)
- The speed must not be h igher than approxi -
mate ly
80 mph (130 km/h) .
- Kick -down must not be activated .
- The sport drive mode "S " must not be selected .
EV mode is switched off if one or more of the
conditions are not met. The gasoline engine wi ll
start automatically. The
l!'§'J indi cator light turns
on as a message in the instrument cluster. The
LED in the
14" 1 butto n and the . indicator light
turn off .
E lectric drive mode will not contin ue automati -
cally. React ivate the EV
mode ¢ page 98. Ill-

u. 00 ... N l'­ N ... 0 N > 00
(D Tips
It may be necessary for the gasoline engine to
r u n longer for technical reasons, such as
when condensation accumu lates in the en­
gine. Driving exclusively in electric mode is
not possible in this phase.
Plug-in hybrid functions
Applies to: vehicles with plug-in hybrid drive
The funct ions descr ibed below act ivate automati­
cally depending on the driv ing sty le.
Full-throttle acceleration (boost)
The boost funct ion is act ivated by pressing the
accelerator pedal farther down (kick-down). The
vehicle is powered by both the gasoline engine
and the electric motor when in full accelerat io n.
Boost is only availab le for a sho rt time , because it
uses a large amou nt of energy. Ava ilability de­
pends on the high-voltage battery charge level.
Coasting
The gasoline engine switches off and disengages
at speeds up to approximate ly 112 mph
(180 km/h) if the accelerator pedal is not p ress-
Tips for efficient driving
Applies to: vehicles with plug-in hybrid drive
Driving situations Conditions
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ed and the "D" position is selected. Driving con­
servative ly like this can reduce fuel consumption .
Energy recovery (recuperation)
When braking, t he e lectr ic moto r will act as a
generato r creat ing elect ric energy that is then
stored in the hig h-voltage battery. This also o c­
curs when the vehicle is coasting or driving down ­
hill .
If the brakes are applied early and evenly, the
electric motor w ill brake the vehicle @
¢
page 95, fig. 98. By doing this, a large amount
of the kinetic energy is recovered and may be
stored as electric energy in the high-voltage bat­
tery . The conventional brakes are also activated
when the brakes are pressed very hard.
The strength of recuperation can depend on the
following factors:
- If you are in tiptronic mode ¢
page 88. Or
- I f the sport dr iv ing mode "S" was se lected.
The energy recovery is shown in the energy flow
display in the instrument cluster display/Info­
ta inment system
¢ page 100.
Vehicle behavior
-Cautious driving and reserved ac- The kinetic energy of the ve hicle is used to
ce leration . move the vehicle.
Constant driving and
-Re lease the accelerator pedal The gasoline engine turns off automati-
coasting (gliding)
early and entirely. cally and disengages when you release the
accelerator pedal completely . The veh icle
glides w ithout being propelled .
-Brake early and evenly with short The electric motor brakes the vehicle. By
E nergy recove ry ( re- pedal movements.
doing this, a large amount of the kinetic
energy is recovered and may be stored in
cu perat ion)
the high-voltage battery in the form of
electr ic energy .
Driv ing in city traffic
-Accelerate moderately and brake The kinetic energy o f the ve hicle is used to
early and evenly move the vehicle.
99
...

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Driving situations Conditions Vehicle behavior
-Intentionally take your foot off of The gasoline engine turns off automati-
the gas pedal to allow for pro- cally and disengages when you release the longed coasting. accelerator pedal completely. The veh icle
Driving on highways glides without being propelled
.
- Reduce the vehicle speed by re-Fuel consumption can be reduced by
and expressways
leasing the accelerator pedal and coasting.
not by braking.
- Use the "S" selector lever position A sporty driving style increases fue l con-
and tiptron ic mode sparingly.
sumption.
- Do not run the gasoline engine to The temperature of the gasoline engine
warm the engine while the vehicle rises very s lowly and the fuel consump-
is parked tion increases considerably.
- Use the rear window/exterior This conserves the energy in the high-volt-
Driving in cold weath- mirror defogger and the seat heat-
age battery so that it is availab le to run
ing sparing ly. the vehicle in electric mode.
er
- Park the vehicle in a garage over-This reduces exposure of the high-voltage
n ight battery to cold temperatures. The re-
quired temperature range for the high-
voltage battery will then be reached more quickly after you start dr iving.
Energy flow display
Applies to : vehicles with plug-in hybrid drive
Fig. 102 Inst rument duster: energy flow display
An energy flow display can be shown in the in­
strument cluster display/Infotainment system
1>.
The image is animated in the Infota inment sys­
tem
1> .
l l Not available in all Infota inme nt syste ms.
100
Fig. 103 Infota inment system•: energy flow disp lay
Display of energy flow indicator in the
instrument cluster display
.,. Open the first Veh icle tab (tr ip compute r) using
the
l q 1> I button on the multifunction steering
wheel.
.,. Applies to: vehicles with Audi virtual cockpit: on
the multifunction steering wheel, select: left
control button
> Energy flow.

LL co .... N
" N
~ Applies to: vehicles with analog instrument cluster: open the
Energy flo w ind icator disp lay
by turning the left thumbwhee l on the mult i­
function steering wheel.
Component Color
(D Gasoline engine Orange
Gray
@ High-voltage battery Green
Green
(animated in the
Infota inment sys-
tern
al)
Gray
(§) Motion arrow Green
Orange
Green -orange
@ Motion arrow Green
a) Not avail ab le in all Infot ainmen t systems.
The power currently available in the electric drive
sys tem is displayed when you open the energy
flow disp lay.
The bars are filled in with different colors based
on the power
status @~ fig. 102:
- White : electric power currently availab le
- Green: electric power currently being used
The more ba rs that are filled in the E-max section
@ , the longe r the maximum power can be utiliz­
ed . The bars turn off in the E-max section when
the maximum power can no longer be utilized.
When the elec tric dr ive power is greatly red uced,
the drive mode will automatically switch to using
the gasoline engine.
The availability of power is genera lly restr icted
under the fo llow ing cond itions:
- The temperature of the high-voltage battery is
very co ld or very hot.
- The high-voltage battery charge level is low.
.... 0 N ii'i l) Not availab le in al l Infota inment system s.
e-tron
Image in the Infota inment display1
)
~ In the Infotainment system, select: I MENU I
button > Veh icl e > left control button >Audi
d rive select .
M eaning
The gasoline engine is running
The gasoline engine is off
High-voltage battery charge level
The high-voltage battery is charging
The vehicle is not in drive ready mode
E lectric driv ing
Driving w ith the gasoline engine
Driving with the gasoline engine and electric mo-
tor (boost)
Recuperation
The power availability is not v is ible if the
111 ind i­
cator light turns on.
(0 Tips
High power availability is necessary, for exam­
ple, when need ing to acce lerate q uickly wh ile
i n e lectric driving mode to pass another vehi­
cle.
Vehicle tool kit and tire mobility kit
Applies to: vehicles wit h plug -in hybr id drive
F ig. 104 Lu ggage compartment: veh icle tool kit and tire
mob ility k it
101

e-t ro n
The vehicle tool kit and the tire mobility kit (Tire
Mobility System) are located in the side trim pan­
el @ and ® in the luggage compartment.
Addit ional info rmation about the vehicle tool kit
may be found under ¢
page 360 and informa­
tion about the tire mobility kit under
¢ pag e 361.
@ Tips
The vehicle must not be operated without the
tire repair set.
Vehicle transport
A ppl ies to: ve hicles w ith p lug- in hybrid drive
The following contains information you should
know about transporting your vehicle .
The MQB-A high-voltage lithium -ion battery sys­
tem equ ipped in yo ur vehicle is composed of SA­
NYO 12 UF 261 591 h igh-vo ltage batteries and
has passed test 38 .3 in accordance with the UN
Tests and Criteria handbook . The vehicle may be
transported with the high-voltage battery instal­
led as conventional class 9 ha zardous materials
without additional official consent for air and sea
sh ipment (current law ICAO-TI and IMDG-Code
01.01.2012) .
Jump start
App lies to: ve hicles w ith plug -in hybrid drive
The term "vehicle battery " refers to the 12 Volt
battery in your vehicle.
F ig . 1 05 Eng in e co mpartment: conn ectors for a c harge r
and jump star t cables
The vehicle is equipped with one vehicle battery
and one high-voltage battery .
102
If the vehicle battery is drained, it can be charged
with a charger or you can jump start the vehicle us ing another vehicle's battery in the same way
as a conventional vehicle.
Read the information about charging the vehicle
battery ¢
page 32 7 and for jump starting the ve­
hicle
¢ page 375 .
.,. Open the hood ¢ page 320.
.,. Remove the fuse box cover @ to access the
positive terminal
0 ~ page 321.
.,. Clamp the terminal clamps from the charg ing
device or jump start cable to the positive termi­
nal
0 and to the body ground point Q .
@ Note
You must not give a jump start with your vehi­
cle . Th is cou ld cause s ignificant damage to
the electrical system i n your vehicle .
Coolant
Applies to: vehicles wit h pl ug-in hyb rid drive
Fig . 106 En g in e compartment: coolant exp ans ion tank
Your vehicle has two coolant expansion tanks
that are separate from each other:
@ : expansion tank for gasoline engine and elec ­
tric motor .
@: expansion tank for the high -vol tage area.
The expan sion ta nk @ must not b e opened
¢,& .
.,. Switch the ignition off.
.,. Open the hood ¢ page 320.
.,. Always check the coolant level in both coolant
expansion tanks @ and @ using the outer
ma rkings.
1111>

e-tron
The gaso line engine is no longer ava ila b le be ­
cause there is not enough fue l. Drive immediate ly
to a gas station.
Fuel filler door emergency release
A pp lies to : ve hicles w ith plug- in hybrid drive
You must use the emergency re lease to open the
fue l filler door when there is a malfunct io n
c::;, page317 .
The tank is not vented. You can only f ill a small
amount of fuel in the tank.
~ Fill only unti l the automatic fue l pump nozzle
turns off for the first time when it is operated correctly.
Drive to an a utho rized Aud i de aler or a uth o rized
Audi Service Facility immediately to have the
malfunctio n corrected .
(D Tips
Pressure can escape if you open the tank ca p
after using the emergency release . This can
create noises.
Charging
General information
A pp lies to: ve hicles w ith plug -in hybrid drive
Two options are ava ilab le for cha rging the vehi ­
cle:
- Charge at a p ublic charging stat ion w ith a spe­
c ia l charging cable*
c::;, page 106 .
-Charge with ho useho ld and industrial power
sockets using the Audi e-t ron c harg ing system
¢ page 106.
Environmental condition s when using the
Audi e-tron charging system
- Operat ing temperatu re : -13 °F (-25 °C) to 95 °F
(+35 °C)
- Humidity: 5% to 95%, non-co ndensing
- 13,000 feet (4,000 meters) maximum above
sea leve l
- Protected against dust and spray (IP54 (USA:
enclosure 3 R))
104
Warnings when using the charging system
&
Surfaces ca n become very hot when
i n d irect su nlight .
&~
Incorrect use increases the risk of
electric shock.
~¼
Do not use any extens ions co rds o r
c abl e reels.
~
Do not use any travel adapters.
~~
Do not use any power str ips.
~~~
Do not use any charg ing cables with
damage to the electronics or the
con necti ng w ires .
.&_ WARNING -
Sockets that are inst alled incorrect ly can
cause elect ric shock or fire when charging the
h igh -vo ltage battery using the vehicle charg ­
ing connection .
- Installation and set up of the household con­
nection for the Audi e-tron charging system
may only be performed by a qualified e lec­
trician. The q ualified electrician is thereby
fully responsib le for adhering to applicable
standards and regu lations.
- Make sure that the selected charg ing con­
nection is suitable for drawing 16 amps .
- Make sure that the household soc ket is
grounded and shielded from water.
- The A udi e-tron charging system may only
be used with a prope rly grounded power
network. It cannot be used with non­
gro unded power networks (s uch as IT net­
wo rks) .
- Please follow the safety precautions in the
assembly instr uctions for the A udi cha rging
dock* or the Audi cha rging clips* .
.&_ WARNING
If you are not fam il iar with the socke t or the
e lectr ica l installation or it has not been
checked by qualified e xperts, never use i t fo r
cha rging. Even very low ch arg ing cu rrents can
cause ser ious damage and in particular fires if
the socket or electrical installation is in bad
Ill>

Trail er to wing
Trailer towing
Driving with a trailer
General information
Your veh icle is primari ly intended for transport­
ing peop le and luggage. Howeve r, if you dr ive
with a tra iler , follow the techn ica l requirements ,
the operation and driving tips, and the lega l reg ­
ulations.
Dr iving w ith a trailer affects the vehicle 's fuel
consumpt ion, performance and wear. It a lso re­
quires higher concentration from the driver .
A WARNING
Do not transport any people in a trailer due to
the risk of fatal injury .
Technical requirements
Certain requirements must be met when towing
a trailer.
Trailer hitch
Only use a trailer hitch with a removab le ball
h itch mount and ball h itch. The tra ile r hitc h must
be pe rm it t ed for the vehicle, the tra iler and the
permitted tota l weight of the trailer being
pu lled . Above all, it must be secure ly and safe ly
attached to the vehicle trailer.
Never mo unt a t rai ler hitch on the bumper. The
trai ler hitc h must be mounted in a way that does
not impair the function of the bumper. Do not
make any changes to the exhaust system and the
brake system.
Check regu larly if the trai ler hitc h is securely
mounted . A lways follow the instructions given by
the trai ler hitch manufacturer .
Trailer brakes
If t he tra ile r has its own bra ke system, then fol­
low the manufacturer specifica tions. Howeve r,
the brake system on the trai ler must never be
connected to the vehicle brake system.
118
Engine cooling system
D riving w ith a tra ile r means a higher load on t he
engine and the cooling sys tem. The coo ling sys­
tem must be designed for additiona l load and
contain enoug h
coolant ¢@ .
@ Note
Longer incl ines cannot be driven wi tho ut a
suitab le cooling system, especia lly if the out ­
side temperatures are high . ot herwise, this
i ncreases the risk of eng ine damage.
Operating instructions
Several things must be noted when towing a
trailer.
Towing capacity
Yo ur vehicle can only be ope ra ted with class 1 or
class 2 trai le rs.
Load distribution
Poor cargo load and distr ib ution can negatively
i mpact vehicle handling . T o have the lowest im­
pact as poss ible, load the tra ile r according to
t h ese cr ite ria :
- Store objects preferably in the vehicle luggage
compartment . The vehicle should a lways carry
the heaviest poss ib le load and the trailer
should have t he lig htest poss ible load .
- Dist ribute the load in the t railer so that the
heavy objects a re as close to the axle as poss i­
ble.
- Secu re objects from s lid ing o ut of place.
- Ut il ize the maximum permitted tongue we ight
if poss ible .
Tire s
Set the tire pressure on your vehicle for a "full
load"; see the tire pressure
st icker ¢ page 341.
If necessary, also adjust the t ire pressure on the
trailer acco rding to the manufactu rer's recom­
mendat ion.
Winter tires should be mounted on the vehicle and on the trailer during w inter temperatures .