trailer AUDI S4 2016 Owners Manual

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Safety belts . . . . . . . . . . . . . . . . . . . . . . . . 133
Belt tensioners . . . . . . . . . . . . . . . . . . . . . . 136
Airbag system . . . . . . . . . . . . . . . . . . . . 138
Important information . . . . . . . . . . . . . . . 138
Fr ont airbags . . . . . . . . . . . . . . . . . . . . . . . 142
Monito ring the Advanced Airbag System . 148
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . 1S2
Side curtain airbags . . . . . . . . . . . . . . . . . . lSS
Child safety . . . . . . . . . . . . . . . . . . . . . . 1S8
Important information . . . . . . . . . . . . . . . 158
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . 163
Securing child seats . . . . . . . . . . . . . . . . . . 167
LATCH system (Lower anchorages and
tethers for children) . . . . . . . . . . . . . . . . . 171
Addit ional information 175
Driver messages . . . . . . . . . . . . . . . . . 176
Intelligent Technology . . . . . . . . . . 176
Notice about data recorded by the Event
Data Recorder and vehicle control
modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
E lectronic Stabilization Control ( ESC) . . . . 177
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Electro-mechanical power assist, dynamic
steering . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Driving with your quattro . . . . . . . . . . . . . 182
Energy management . . . . . . . . . . . . . . . . . 182
Driving and the environment . . . . 185
Breaking in . . . . . . . . . . . . . . . . . . . . . . . . . 185
Avoid damaging the vehicle . . . . . . . . . . . 185
Driving through water on roads . . . . . . . . 185
Cata lytic converter . . . . . . . . . . . . . . . . . . . 186
Shutting down vehicle . . . . . . . . . . . . . . . . 186
Economical and environmentally-friendly
driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
allroad: D riving offroad . . . . . . . . . . . . . . . 188
Trailer mode . . . . . . . . . . . . . . . . . . . . . 190
Driving with a trailer . . . . . . . . . . . . . . . . . 190
Trailer mode notes. . . . . . . . . . . . . . . . . . . 192
Operating instructions ...... .. .. .
Care and cleaning ........... .. .. .
General information ..... ... .. .. .. .. . 193
193 193
~ Car washes . . . . . . . . . . . . . . . . . . . . . . . . . 193 ..... v:, .....
Table of contents
Cleaning and care information . . . . . . . . . 194
Placing your v ehicle out of service . . . . . . 197
Fuel and Refueling . . . . . . . . . . . . . . . 198
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Refueling . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Checking and Filling . . . . . . . . . . . . . 203
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Engine compartment . . . . . . . . . . . . . . . . . 20S
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Cooling system . . . . . . . . . . . . . . . . . . . . . . 208
Brake fluid .. .. .. .. ... ........... ... 2 11
Battery ......... .. ................. 212
Windsh ield/headlight* washer conta iner. 216
Wheels ...... .. .. ................. 217
Wheels and Tires ... ...... ....... .. .. 217
Tire pressure monitoring system 235
Troubleshooting . . . . . . . . . . . . . . . . . 237
Emergency assistance . . . . . . . . . . . 23 7
Vehicle tool kit . . . . . . . . . . . . . . . . . . . . . . 23 7
Space-saving spare tire (compact spare
tire) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Inflatable spare tire . . . . . . . . . . . . . . . . . . 238
Inflating inflatable spare tire . . . . . . . . . . 239
Replacing wheels . . . . . . . . . . . . . . . . . . . . 240
Fuses and bulbs . . . . . . . . . . . . . . . . . . 246
Fuses..... .... .. ......... .... .... .. 246
Bulbs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Emergency situations . . . . . . . . . . . . 250
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Starting by pushing or towing . . . . . . . . . . 250
Starting with jumper cables . . . . . . . . . . . 250
Useofjumpercables ................. 251
Towing with a tow truck . . . . . . . . . . . . . . 252
Raising the vehicle . . . . . . . . . . . . . . . . . . . 254
Technical data . . . . . . . . . . . . . . . . . . . . 255
Technical data . . . . . . . . . . . . . . . . . . . . 255
Vehicle identification ......... ...... . .
Weights ... ... .. .. ................ .
Dimensions .. .. . ... ................ . 255
255
256
3

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Enhanced shift indicator
Applies to vehicles: with manual transmiss ion and tr ip com­
p uter with eff iciency program
F ig. 14 Display: enhanced s hift i ndicator
• In the efficiency program, press the function
selection switch¢
page 25, fig. 11@ repeat­
edly until the enhanced shift indicator appears
in the display.
The efficiency program also has an enhanced
shift ind icator. This enhanced shift indicator fol­
lows the same concept as the "standard" shift in­
dicator¢
page 26. The selected and the recom­
mended gears are highlighted in colors like a
traffic light .
The color of the circle indicates if the most suita­ b le gear is engaged or if you should shift up or
down.
Green circle w ithout or No gear or the most
with a gear suitable gear is engag-
ed
Yellow circle¢
fig. 14 Shift up or down one
gear
Red circle Shift up two gears
(D Note
This enhanced shift indicator can help you
conserve fuel. It is not designed to recom­
mend the correct gear in all dr iving situa­
tions . Only the dr iver can decide which gear is
correct in certain dr iving situations such as
when passing another veh icle, dr iving on hill s
or towing a trailer.
Driver in forma tion system
(D Tips
-The enhanced shift indicator display is dif­
ferent in vehicles with a monochrome dis­
play.
- The "standard" shift indicator* disappears
when the enhanced shift indicator is dis­
played.
Other equipment
Applies to vehicles: with trip computer with eff ic ie n cy pro­
gram
Fig. 15 Display : other equ ipment
• In the effic iency program, press the funct ion
select ion switch ¢
page 25, fig. 11 @ repeat­
ed ly until the other equipment appears in the
disp lay.
Other equipment that is currently affecting fuel
consumption is listed in the eff ic iency program.
T he display shows up to three other items of
equipment @. T he equipment using the most
fuel is listed first. If more than three items using
fuel are switched on, the equipment that is cur­ rently using the most fuel is displayed.
A scale @also shows the current total consump­
tion of all other equipment .
27

Driving
- Occasional noises when the parking brake is
applied and released are normal and are not
a cause for concern.
- When the vehicle is parked, the parking
brake goes through a self-test cycle at regu­
lar intervals. Any associated noises are nor­
mal.
Parking
.,. Press the brake pedal to stop the vehicle .
.,. Pull the switch @¢
page 85, fig. 100 to set
the parking brake.
.,. Automatic transmission: Move the selector lev-
er to P.
.. Turn the engine off¢.&, .
.. Manual transmission: Shift into 1st gear.
.. When on inclines or declines, turn the steering
wheel so that the vehicle will roll into the curb
if it begins to move.
A WARNING
-
-When you leave your vehicle -even if only
briefly -always remove the ignition key. This
applies particularly when children remain in
the vehicle. Otherwise the children could
start the engine, release the parking brake
or operate electrical equipment (e.g. power
windows). There is the risk of an accident.
- When the vehicle is locked, no one -particu­
larly not children should remain in the vehi­
cle. Locked doors make it more difficult for
emergency workers to get into the vehicle -
putting lives at risk.
Starting from rest
The starting assist function ensures that the
parking broke is released automatically upon
starting .
Stopping and applying parking brake
.. Pull the switch @¢ page 85, fig. 100 to apply
the parking brake.
86
Starting and automatically releasing the parking brake
.. When you start to drive as usual, the parking
brake is automatically released and your vehicle
begins to move.
When stopping at a traffic signal or stopping in city traffic on vehicles with an automatic trans­
mission, the parking brake can be applied. The
vehicle does not have to be held with the foot­ brake. The parking brake eliminates the tendency
to creep with a drive range engaged . As soon as
you drive off as usual, the parking brake is re­ leased automatically and the vehicle starts to
move .
Starting on slopes
When starting on inclines, the starting assist pre ­
vents the vehicle from unintentionally rolling back. The braking force of the parking brake is
not released until sufficient driving force has
been built up at the wheels.
(D Tips
For safety reasons, the parking brake is re­
leased automatically only when the driver's
safety belt is engaged in the buckle.
Starting off with a trailer
To prevent rolling back unintentionally on an in­
cline, do the following:
.. Keep the switch @¢ page 85, fig . 100 pulled
and depress the accelerator. The parking brake
stays applied and prevents the vehicle from
rolling backward.
.,. You can release the switch @once you are sure
that you are developing enough driving force at
the wheels by depressing the accelerator.
Depending on the weight of the rig (vehicle and
trailer) and the severity of the incline, you may
roll backwards as you start. You can prevent roll­
ing backwards by holding the parking brake
switch @pulled out and accelerating -just as
you would when starting on a hill with a conven­
tional hand brake .

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Audi side assist Side assist
Description
App lies to vehicles: with Audi side assist
Fig. 123 Sensor dete ction rang e
Fig. 124 Display o n the exterio r mirror
Side assist helps you monitor your blind spot and
traffic behind your vehicle . Within the limits of
the system , it warns you about vehicles that are
coming closer or that are traveling with you with­
in sensor range ©
r=;, fig. 123: if a lane change is
classified as critical, the display @ in the exter ior
mirror
r:¢> fig . 124 turns on .
The display in the left exterior mirror provides as­
sistance when making a lane change to the left,
while the d isp lay in the right exterior mirror pro ­
vides assistance when making a lane change to
the right .
Information stage
As long as you do not activate the turn signal,
side assist
informs you about vehicles that are
detected and class ified as critica l. The disp lay in
the respective mirro r turns on , but is dim .
Aud i side assist
The display remains dim intentionally in the in­
formation stage so that your view toward the
front is not disturbed.
Warning stage
If you activate the turn signal , side assist warns
you about vehicles that are detected and classi­
fied as critical. The display in the respect ive mir­
ror blinks bright ly. If this happens, check traffic
by glancing in the rearview mirror and ove r you r
shoulder
c::, .&. in General informa tion on
page 108.
{!) Tips
- You can adjust the brightness of the display
@ c::, page 109.
-Please refer to the instructions for towing a
trailer located in
c::, page 108.
107

Audi side assist
General information
Applies to veh icles: w ith Aud i s ide ass ist
®
@
©
F ig . 125 Driving s ituations
I AU DI
•
Fig. 126 Rear of the veh icle: pos it ion of the sensors
Side assist functions at speeds above approxi­
mately 19 mph (30 km/h).
@ Vehicles that are approaching
In certain cases, a vehicle will be classified as
critical for a lane change even if it is still some­
what far away. The faster a veh icle approaches,
the sooner the display in the exterior mirror w il l
turn on.
@ Vehicles traveling with you
Vehicles traveling with you are indicated in the
exterior mirror if they are classified as critical for
a lane change. All vehicles detected by side assist
108
are indicated by the time they enter your "blind
spot", at the latest .
© Vehicles left behind
If you slow ly pass a vehicle that side assist has
de tected (the diffe rence in speed between the
vehicle and your vehicle is less than 9 mph
(15 km/h)), the display in the exterior mirror
turns on as soon as the vehicle enters your blind
spot .
The display wi ll not turn on if you quickly pass a
vehicle that side assist has detected (the differ­ ence in speed between the vehicle and your vehi­
cle is greater than 9 mph (15 km/h)) .
Functional limitations
The radar sensors are designed to detect the left
and right adjacent lanes when the road lanes are
the normal width . In certain situations, the dis­
play in the exterior mirror may turn on even
though there is no vehicle located in the area
that is crit ical for a lane change. For example:
- if the lanes are narrow or if your are driving on
the edge of your lane. If this is the case, the
system may have detected the vehicle in anoth­
er lane that is
not adjacent to your current lane.
- if you are driv ing through a curve. Side assist
may react to a vehicle that is one lane over
from the adjacent lane .
- if side assist reacts to other objects (such as
high or displaced guard rails) .
- In poor weather conditions. The side ass ist
functions are limited.
Do not cover the radar sensors
c:> fig. 126 with
stickers, deposits, bicycle wheels or other ob­
j ects, because this w ill affect the function . Do not
use side assist when towing a trailer. For infor­
mation on cleaning, refer to
c:> page 193.
A WARNING
- Always pay attention to traff ic and to the
area around your vehicle. Side assist cannot
replace a driver's attention . The driver alone
is always responsible for lane changes and
-
similar driving maneuvers . IJ>-

Audi side assist
(D Tips
-Si de assist is not active w hile you are mak­
i ng t he a dju stment .
- You r settings are automatic ally store d an d
assi gned to t he remote co ntrol key being
u sed.
Driver messages
App lies to veh icles: w ith Audi side assist
If s ide ass ist switches off by itself, the LED in the
button turns off a nd a message will appear in the
i n str ument cluster d isp lay :
Aud i side assist unavailable: Sensors blocked
T he rada r senso rs ' vision is affe cted . Do not cove r
the area in front of the sensors wit h bike wheels,
sticke rs, dirt o r other objects. Clean the area in
front of the sensors, if necessary
c> page 108,
fig. 126.
Audi side assist : Currently unavailable
S ide assist c an no t be swi tc h ed on tem pora ril y be­
c a use there is a mal func tio n (fo r ex am ple, the
bat tery ch arge level may be too low) .
Audi side assist: System fault!
The system cannot guarantee that it wi ll detect
ve hicles co rrectly and it is swi tched off . The sen ­
sors have bee n disp lace d or are fa ulty . Have the
sys tem chec ked by a n aut hori zed Audi de aler or
a uthor ized Audi Se rvice F acility soon.
Audi side assist: Unavailable when towing
Side assist sw itches off automatica lly when a fac­
tory-installed trailer hitch is connected to the
electr ica l co nnector on the trailer. The re is no
gua rantee the system will sw itch off when usi ng
a retrofi tte d t raile r hi tc h. D o not use s ide ass is t
w hen towing a trailer.
110

Parking System
-You can change the volume and pitch of the
signals as well as the display ¢
page 120.
-What appears in the display is time-de­
layed.
Reverse Parking
Applies to veh icles: with park ing system (rear, with rear view
camera)
Parking mode 1 can be used when parking in a
garage or parking space .
Fig. 134 MMI Di spla y: Aiming at a pa rk in g spot
Fig. 135 MM I Di splay: Alig ning the ve hicle
.-Switch the MMI on and select the reverse gear .
.- Turn the steering wheel until the orange orien­
tation lines(!) appear in the parking spot
¢
fig. 134. Use the markings @to h elp you es­
timat e the distance from an obstacl e. Each
marking corresponds to 3 ft (1 m). The blue
area represents an ex tension of the vehicle 's
outline by approximately 16
ft (5 m) to the
rear .
.- While driving in reverse gear, adjust the steer­
ing wheel angle to fit the parking space with
the aid of the orange orientation lines
~ CD. @
marks the rear bumper. You should stop driving
in reverse as soon as and no later than when
118
the red orientation line@ abuts an object
¢ ,&. !
A WARNING
-The rear view camera does not show the en­
tire area behind the vehicle
¢ page 116,
fig . 132.
Watch out especially for small chil­
dren and animals. The rear view camera can ­
not always detect them, posing risk of an
accident!
- Please note that objects not touching the
ground can appear to be further away than
they really are (for example, the bumper of
a parked vehicle, a trailer hitch, or the rear
of a truck). In this case, you should not use
the help lines to help with parking, which
poses danger of an accident!
(D Note
- Low obstacles already signaled by a warning
can disappear from the system's detection
range as they are approached and will not
continue to be signaled. Objects such as
barrier chains, trailer draw bars, thin paint­
ed vertical poles or fences may not be de­
tected by the system , posing risk of dam­
age .
- In the MMI display, the direction of travel of
the vehicle rear is represented depending on
the steering wheel angle. The vehicle front
swings out more than the vehicle rear .
Maintain plenty of distance from an obsta­
cle so that your outside mirror or a corner of
your vehicle does not collide with any obsta­
cles -danger of accident!

Trailer mod e
Trailer mode
Driving with a trailer
General information
Your Audi was designed primarily for passenger
transportation.
If you plan to tow a trailer, please remember that
the additional load will affect durability, econo­
my and performance.
Trailer towing not only places more stress on the
vehicle, it also calls for more concentration from
the driver.
F or this reason, always follow the operating and
driving instructions provided and use common
sense.
Technical requirements
Tr aile r hitch
Use a weight-carrying hitch conforming to the
gross trailer weight. The hitch must be suitable
for your veh icle and trailer and must be mounted
securely on the vehicle's chassis at a technically
sound
location . Use only a trailer hitch with a re­
movable ball mount . Always check w ith the t rail­
er hitch man ufact urer to make su re that you are
using the co rrect hitch .
Do not use a bump er hit ch .
The hitch must be installed in such a way that it
does not interfere with the impact -absorbing
bumper system. No mod ificat ions should be
made to the vehicle exhaust and brake systems .
From t ime to t ime, check that a ll hitch mount ing
bolts rema in securely fastened.
When you are not tow ing a tra iler, remove the
tra iler hitch ba ll mount . This prevents the hitch
from caus ing damage shou ld your veh icle be
s truck from be hind ¢
,&..
Trailer brakes
If your trailer is equipped with a brak ing system,
check to be sure that it conforms to all regula­
tions .
190
The trailer hydraulic brake system must not be
directly connected to the vehicle's hydraulic
brake system ¢&. .
Safety chains
Always use safety chains between you r vehicle
and the trailer.
Trailer lights
Traile r lights must meet all regulations . Be sure
to check w ith your author ized Audi dealer for cor­
r ec t wiring , switches, and relays.
M irrors
If you are unable to see the traffic behind you us­
ing the regular outs ide mirrors, then you
must in­
stall extended mirrors . It is important that you
always have clear vision to the rear.
.&_ WARNING
- If a tra ile r has e lectr ica l brakes p lease no te
t hat these brakes are not activated by the
factory-fit ted contro l unit -risk of accident!
'
- After removing the trai ler hitch, do not
store it in your vehicle. In case of sudden
braking, the hitch co uld fly forward and in ­
jure you or yo ur passengers.
Operating instructions
Ma ximum traile r we ight
A trailer for your vehicle is limited to a typical
class 1 or class 2 trailer.
Trailer load distribution
Be sure the load in the trai ler is held securely in
place to p revent i t from shifting forward, back ­
ward or sideways.
Nev er allow a pa ssen ger to rid e in a trailer ¢ &.
in Driving instructions on page 191.
Engine cooling system
Towing a tra iler makes the engine work harder . It
i s important that the cooling system's perform ­
ance is up to the additional load. Make sure that
the cool ing system has enoug h fluid.

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Tire pressure
When tow ing a tra ile r, infl ate the tires of yo ur
ve hicl e to the co ld tire press ure listed under "Fu ll
l oad" on the label located on the driver's side B­
pi llar (visib le when th e door is open). Inflate
tra ile r tir es to t railer and tire manufacture rs'
specifications.
Light s
The headlight settings should be checked wi th
the trai ler attached before driv ing
off . Check to
make sure both veh icle and trai ler lights are
wo rking prope rly .
Safety chains
Be s ure trai ler s afety chains are p ro p erly conne ct­
ed from the trailer to the hitc h on the vehicle .
L eave enough slack in the chains to permit turn­
ing corners . When you install safety cha ins, make
sure they w ill not drag on the road when yo u are
driving.
The chains s hou ld cross under the t railer tongue
to p revent it from dropp ing in case of separat ion
from t he hitc h.
Driving instructions
Driving with a trailer always requires extra core
and consideration.
To ob tain the best possible handling of vehicle
and trailer, please note the fo llowing :
.,. Do no t tow a lo ad ed t railer w hen yo ur car i tse lf
i s not lo ad ed.
.,. Be especia lly caref ul when passing ot he r
vehicles .
.,. Observe speed limits.
.,. Do not d rive at the maximum permissible
speed .
.,. Always apply brakes early .
.,. Moni to r th e temperature gauge .
Weight distribution
T owing a loaded trailer w ith an empty car res ults
in a high ly unstable distribution of weight . If this
cannot be avo ided, drive at very low speeds o nly
to avoid the risk of losing steering control.
Trailer mode
A "ba lanced" rig is easier to opera te and co ntrol.
This means that the tow vehicle sho uld be loaded
to the extent possib le and permissib le, w hile
keeping the trailer as light as possible under the
cir cumstances . Wheneve r poss ib le, transfer
some cargo to the luggage compartment of the
tow ve hicle while observing tongue load require­
ments and vehicle loa ding consi de rations .
Speed
The higher the speed, the mo re diff icult it be­
comes for the driver to control the r ig. Do not
drive at t he max imum permissib le speed. Reduce
you r sp eed even more if load, weathe r or wind
cond it ions are u nfavo rab le -pa rticularly when
go ing down hill.
Reduce vehicle speed
immediately if the trailer
shows the slightes t sign of sway ing .
Do not try
to stop the swaying by accelerating .
Observe speed limits . In some a reas, speeds fo r
vehicles towing trailers are lower tha n for regular
vehicles .
Always apply bra kes early . When d riving down­
hill, shift into a lower gear to use the e ngine
braki ng effect to slow the vehicle . Use of the
brakes alone can cause them to overhea t and fa il.
Coolant temperature
The coo lant tempe rature gauge c:> page 10 m ust
be obse rved caref ully. If the needle moves close
to the upper end of the scale, reduce speed im­
me diate ly and/or t urn
off th e a ir cond it io ne r .
If the coolant temperat ure warning light . in
t h e instr ument cluster starts flashing, pull
off
the road, stop and let the engine idle for about
two m inu tes to pre vent heat build -u p .
A WARNING ,.__ -
A nyone not prope rly restr ained in a moving
ve hicl e is at a m uch grea te r risk in an a cci ­
d ent. Never le t anyon e ride in your car w ho is
n o t pr ope rly we arin g th e res tra ints p ro vid ed
by Au di .
191

Trailer mode
Trailer mode notes
Important to know
Your vehicle handles different ly when tow ing a
tra iler because of the additional weight and dif­
ferent weight distr ibution. Safety, performance
and economy w ill great ly depend on how careful­
ly you load your trailer and operate your rig.
Before you actua lly tow your trailer, practice
turning, stopping and backing up in an area away
from traffic . Keep practicing until you have be­
come completely familiar with the way your vehi­
cle-trailer combination behaves and responds.
Backing up is d ifficult and requires practice.
Backing up with a trailer generally requires steer­
ing action opposite to that when backing up your
vehicle without a trailer.
Maintain a greater distance between your vehicle
and the one in front of you. You w ill need more
room to stop . To compensate for the trai ler, you
will need a larger than norma l turning radius.
When passing, remembe r that you cannot accel­
erate as fast as you normally would because of
the added load. Make sure you have enough room
to pass. After passing, allow plenty of room for
your trai ler before chang ing lanes again.
Avoid jerky starts, sharp turns or rapid lane
changes.
(D Tips
- Do not tow a trailer during the break-in peri­
od of you r vehicle.
- If you tow a trailer, your Audi may require
more frequent maintenance due to the ex­
tra load~
page 258.
Parking on a slope
Do not pork on a slope with a trailer. If it cannot
be avoided, do so only ofter doing the following:
When parking:
.,. Apply t he foot brake .
.,. Have someone place chocks under both the ve­
hicle and the trailer wheels.
192
.. With chocks in place, slowly release the brakes
until the wheel chocks absorb the load.
.. Turn the whee ls towards the curb .
.. App ly the parking brake .
.. Place an automat ic transmission* in P, respec­
tively a manual transmission in first or reverse
gear .
When restarting after parking:
.. App ly the foot brake.
.. Start the engine.
.. Move the selector lever to 0/5, respectively a
manual transmission in first gear.
.. Release the parking brake and slowly pull out
and away from the whee l chocks.
.,. Stop and have someone ret rieve the wheel
chocks.
(D Tips
If you move the selector lever of the automat­
ic transmission* to P before applying the
parking brake and before blocking the wheels,
you may have to use more force later to move
the lever out of the P position.