2009 Acura TSX Owner's Manual

The vehicle stability assist (VSA)
system helps to stabilize the vehicle
during cornering if the vehicle turns
more or less than desired. It also
assists you in maintaining traction
while accelerating on loose or
slippery road surf aces. It does this
by regulating the engine’s output and
by selectively applying the brakes.
When VSA activates, you may notice
that the engine does not respond to
the accelerator in the same way it
does at other times. There may also
be some noise f rom the VSA
hydraulic system. You will also see
the VSA activation indicator blink.
The VSA system cannot enhance the
vehicle’s driving stability in all
situations and does not control your
vehicle’s entire braking system. It is
still your responsibility to drive and
corner at reasonable speeds and to
leave a sufficient margin of safety.When VSA activates, you will see the
VSA Activation indicator blink.
If this indicator comes on while
driving, pull to the side of the road
when it is saf e, and turn of f the
engine. Reset the system by
restarting the engine. If the VSA
system indicator stays on or comes
back on while driving, have the VSA
system inspected by your dealer.
If the indicator does not come on
when the ignition switch is turned to
the ON (II) position, there may be a
problem with the VSA system. Have
your dealer inspect your vehicle as
soon as possible.
When the VSA system indicator
comes on, you will also see a
‘‘CHECK VSA SYSTEM’’ message
on the multi-information display.
The main f unction of the
VSA system is generally known as
Electronic Stability Control (ESC).
The system also includes a traction
control f unction.
If the low tire pressure/TPMS
indicator comes on (see page ),
or the multi-information display
shows a ‘‘CHECK TPMS SYSTEM’’
message with the indicator flashing
(see page ), the VSA system
automatically turns on even if the
VSA system is turned off with the
VSA OFF switch. In this case, you
cannot turn the VSA system of f by
pressing the VSA OFF switch again. 392
395
VSA A ctivation Indicator
Vehicle Stability Assist
(VSA ) System Indicator
Vehicle Stability A ssist (VSA), aka Electronic Stability Control (ESC), System
398
NOTE:
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Driving with varying tire or wheel
sizes may cause the VSA to
malf unction. When replacing tires,
make sure they are of the same size
and type as your original tires (see
page ).
If you install winter tires, make sure
they are the same size as those that
were originally supplied with your
vehicle. Exercise the same caution
during winter driving as you would if
your vehicle was not equipped with
VSA.
Immediately af ter f reeing your
vehicle, be sure to switch the VSA on
again. We do not recommend driving
your vehicle with the VSA and
traction control systems switched off.
In certain unusual conditions when
your vehicle gets stuck in shallow
mud or f resh snow, it may be easier
to free it with the VSA temporarily
switched of f . When the VSA system
is of f , the traction control system is
alsooff.Youshouldonlyattemptto
f ree your vehicle with the VSA of f if
you are not able to f ree it when the
VSA is on.
VSA is turned on every time you
start the engine, even if you turned it
off the last time you drove the
vehicle.
When VSA is off, the VSA activation
indicator comes on as a reminder. Press and hold the switch again. It
turns the system back on.
This switch is under the driver’s side
vent. To turn the VSA system on and
of f , press and hold it until you hear a
beep.
Without VSA, your vehicle will have
normal braking and cornering ability,
but it will not have VSA traction and
stability enhancement. 452
VSA and Tire Sizes
VSA Of f Switch
Vehicle Stability A ssist (VSA), aka Electronic Stability Control (ESC), System
Driving
399
VSA OFF SWITCH
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Your vehicle has been designed
primarily to carry passengers and
their cargo. You can also use it to
tow a trailer if you caref ully observe
the load limits, use the proper
equipment, and f ollow the guidelines
in this section.
The
maximum allowable weight of the
trailer and everything in or on it
must not exceed 1,000 lbs (450 kg).
Towing a load that is too heavy
can seriously af f ect your vehicle’s
handling and perf ormance. It can
also damage the engine and
drivetrain.
The weight that
the tongue of a f ully-loaded trailer
puts on the hitch should be
approximately 10% of the total
trailer weight. Too much tongue
load reduces front-tire traction and
steering control. Too little tongue
load can make the trailer unstable
and cause it to sway.
Avoid towing a trailer during your
vehicle’s f irst 600 miles (1,000 km)
(see page ).356
Load Limits
T otal T railer Weight: T ongue L oad:
Towing a Trailer
Break-In Period
400
Exceeding any load limit or
improperly loading your vehicle
and trailer can cause a crash in
which you can be seriously hurt
or killed.
Check the loading of your
vehicle and trailer carefully
beforestartingtodrive.
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To achieve a proper tongue load,
start by loading 60% of the load
toward the front of the trailer and
40% toward the rear, then re-adjust
the load as needed.The maximum allowable weight of
the vehicle axles is:
The maximum allowable weight of
the vehicle, all occupants, all
accessories, all cargo, and the
tongue load is: Thebestwaytoconfirmthatall
loads are within limits is to check
them at a public scale. For public
scales in your area, check your local
phone book, or contact your trailer
dealer or rental agency for
assistance.
If you cannot get to a public scale,
you can estimate the total trailer
weight by adding the weight of your
trailer (as quoted by the
manuf acturer) with everything in or
on the trailer.
If you normally pull the same load
each time you tow a trailer, you can
use a suitable scale or a special
tongue load gauge to check the
tongue load the f irst time you set up
a towing combination (a f ully loaded
vehicle and trailer), then recheck the
tongue load whenever the conditions
change.
on the f ront axle
on the rear axle
on the f ront axle
on the rear axle
Automatic transmission:
Manual transmission: Automatic transmission:
Manual transmission:
Checking L oads
Gross Axle Weight Rating
(GA WR):
Gross Vehicle Weight Rating
(GVWR):
Towing a Trailer
Driving
401
4,395 lbs (1,995 kg) 2,325 lbs (1,055 kg)
2,090 lbs (950 kg)
4,475 lbs (2,030 kg) 2,410 lbs (1,095 kg)
2,090 lbs (950 kg)
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Any hitch used on your vehicle must
be properly bolted to the underbody.
Always use saf ety chains when you
tow a trailer. Make sure the chains
are secured to the trailer and hitch,
and that they cross under the tongue
and can catch the trailer if it
becomes unhitched. Leave enough
slack to allow the trailer to turn
corners easily, but do not let the
chains drag on the ground.
Towing can require a variety of
equipment, depending on the size of
your trailer, how it will be used, how
much load you are towing, and
where you tow. If you choose electric brakes, be
sure they are electronically actuated.
Do not attempt to tap into your
vehicle’s hydraulic system. No
matter how successf ul it may seem,
any attempt to attach trailer brakes
to your vehicle’s hydraulic system
will lower braking ef f ectiveness and
create a potential hazard.
See your trailer dealer or rental
agency f or more inf ormation on
installing electric brakes.
Discuss your needs with your trailer
sales or rental agency, and f ollow the
guidelines in this section. Also make
sure that all equipment is properly
installed and maintained, and that it
meets f ederal, state, province, and
local regulations.
To ensure the best quality, we
recommend that you purchase Acura
equipment whenever possible. There are two common types of
trailer brakes: surge and electric.
Surge brakes are common f or boat
trailers, since the brakes will get wet.
T owing Equipment and
A ccessories
Trailer Brakes
Hitches
Saf et y Chains
Towing a Trailer
402
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Many states and Canadian provinces
require special outside mirrors when
towing a trailer. Even if they don’t,
you should install special mirrors if
you cannot clearly see behind you, or
if the trailer creates a blind spot.
Trailer lights and equipment must
comply with f ederal, state, province,
and local regulations. Check with
your local trailer sales or rental
agencies f or the requirements in the
area where you plan to tow, and use
only equipment designed f or your
vehicle.
Since lighting and wiring vary by
trailer type and brand, you should
have a qualif ied technician install a
suitable connector between the
vehicle and the trailer. Improper
equipment or installation can cause
damage to your vehicle’s electrical
system and af f ect your vehicle
warranty. Askyourtrailersalesorrental
agency if any other items are
recommended or required f or your
towing situation.When preparing to tow, and bef ore
driving away, be sure to check the
f ollowing:
The trailer has been properly
serviced and is in good condition.
Thehitch,safetychains,andany
other attachments are secure.
All items in or on the trailer are
properly secured and cannot shif t
while you drive.
All weights and loads are within
limits.
The vehicle has been properly
serviced, and the suspension and
the cooling system are in good
operating condition.
CONT INUED
T railer L ight s A ddit ional T owing Equipment
Towing a Trailer
Pre-T ow Checklist
Driving
403
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2009 TSX

The lights and brakes on your
vehicle and the trailer are working
properly.
Your vehicle tires and spare are
properly inf lated, and the trailer
tires and spare are inflated as
recommended by the trailer
maker.The added weight, length, and
height of a trailer will af f ect your
vehicle’s handling and perf ormance,
so driving with a trailer requires
some special driving skills and
techniques.
Foryoursafetyandthesafetyof
others,taketimetopracticedriving
maneuvers bef ore heading f or the
open road, and f ollow the guidelines
in this section. Driveslowerthannormalinall
driving situations, and obey posted
speed limits f or vehicles with trailers.
Do not exceed the limited speed
when towing a trailer. At higher
speeds,thetrailermayswayor
affect vehicle handling (see ‘‘
’’ in the next page f or
additional gear information).
If your vehicle has an automatic
transmission, use the D position
when towing a trailer on level roads.
Towing a Trailer
Driving Saf ely With a T railerT owing Speeds and Gears
Driving
on Hills
404
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µ
µ
µ
µ
On models with automatic transmission
When driving uphill and downhill,
use the S position (without using the
paddle shif ters) to provide the
proper engine power and engine
braking on each gear. You can also
use the paddle shif ters. In this case,
select third, second, or f irst gear
with the paddle shif ter; depending on
the vehicle speeds and road
condition. Do not use f ourth and f if th
gears. The recommended speed
range f or each gear position is
showninthetable.
Gear position 1
2, 3 Speed range
042mph
(0 67 km/h)
19 62 mph
(30 100 km/h) If the automatic transmission f luid
temperature increases and exceeds
the specif ied limit, the transmission
will also automatically downshif t to
the first gear even with the
Sequential Sportshif t Mode. This
prevents the automatic transmission
f rom overheating. In this case, the
gear position ‘‘1’’ next to the ‘‘M’’
indicator in the instrument panel
blinks about f or f ive seconds, then it
stays on.
Maketurnsmoreslowlyandwider
than normal. The trailer tracks a
smaller arc than your vehicle, and it
canhitorrunoversomethingthe
vehicle misses. Allow more time and
distance f or braking. Do not brake or
turn suddenly as this could cause the
trailer to jackknif e or turn over.
When climbing hills, closely watch
your temperature gauge. If it nears
the red (Hot) mark, turn the air
conditioning of f , reduce speed and, if
necessary, pull to the side of the
road to let the engine cool.
When driving down hills, reduce
your speed and always apply engine
braking by shif ting down. If your
vehicle has a manual transmission,
when going down a steep hill, use
the second gear to provide greater
engine braking.
CONT INUED
Towing a Trailer
Making T urns and Braking
Driving on Hills
Driving
405
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