Page 361 of 524
Your vehicle’s on board diagnostic
system will detect a loose or missing
f uel f ill cap as an evaporative system
leak. The f irst time a leak is detected
a ‘‘TIGHTEN FUEL CAP’’ message
appears on the multi-information
display.
Screw the fuel fill cap back on
until it clicks at least once. If you
do not properly tighten the cap,
you will see a ‘‘TIGHTEN FUEL
CAP’’ message on the multi-
inf ormation display. If the system
still detects an evaporative system
leak af ter retightening the cap, the
malf unction indicator lamp may
come on (see page ).
Push the f uel f ill door closed until
it latches.
Remove the f uel f ill cap slowly.
You may hear a hissing sound as
pressure inside the tank escapes.
The fuel fill cap is attached to the
f uel f iller with a tether. Place the
cap in the holder on the f uel f ill
door. 5.
6.
4. 471
Service Station Procedures
Tighten Fuel Cap Message
358
HOLDERFUEL FILL CAP
TETHER
\f—\f—\fy
y
)!
\f\fy\fy
2009 TSX
Page 362 of 524

If the system still detects a leak in
the vehicle’s evaporative emissions
system, the malf unction indicator
lamp (MIL) comes on. If the f uel f ill
cap was not already tightened, turn
the engine of f , and check or
retighten the f uel f ill cap until it
clicks at least once. The MIL should
go off after several days of normal
driving once the cap is tightened or
replaced. If the MIL does not go of f ,
have your vehicle inspected by a
dealer. For more inf ormation, see
page .
Turn the engine of f , and conf irm the
f uel f ill cap is installed. If it is, loosen
it, then retighten it until it clicks at
least once. The message should go
off after several days of normal
driving once you tighten or replace
the f uel f ill cap. To scroll to another
message, press the INFO button.
The ‘‘TIGHTEN FUEL CAP’’
message will appear each time you
restart the engine until the system
turns the message of f .
Park the vehicle, and set the
parking brake. Pull the hood
release handle located under the
lower lef t corner of the dashboard.
The hood will pop up slightly.
1.
471
CONT INUED
Opening and Closing the Hood
Service Station Procedure
Bef ore Driving
359
HOOD RELEASE HANDLE
\f—\f—\fy
y
)!
\f\fy\fy
2009 TSX
Page 363 of 524
Reach in between the hood and
the f ront grille with your f ingers.
The hood latch handle is above
the ‘‘A’’ logo. Push this handle up
to the right until it releases the
hood. Lif t the hood.To close the hood, lif t it up slightly to
remove the support rod f rom the
hole. Put the support rod back into
its holding clip. Lower the hood to
about a f oot (30 cm) above the
f ender, then let it drop. Make sure it
is securely latched.
If the hood latch handle moves
stif f ly, or if you can open the hood
without lifting the handle, the
mechanism should be cleaned and
lubricated. Holding the grip, pull the support
rod out of its clip. Insert the end
into the designated hole in the
hood marked by an arrow.
3.
2.
Service Station Procedure
360
LATCH SUPPORT ROD
GRIP
CLIP
\f—\f—\fy
y
)!
\f\fy\fy
2009 TSX
Page 364 of 524
Remove the dipstick again, and
check the level. It should be
between the upper and lower
marks.Look at the coolant level in the
radiator reserve tank. Make sure it is
between the MAX and MIN lines. If
it is below the MIN line, see
on page f or
informationonaddingtheproper
coolant.
Refer to
on page f or inf ormation
about checking other items on your
vehicle.
If it is near or below the lower mark,
see on page .
Insert the dipstick all the way back
into its hole.
Wipe the dipstick with a clean
cloth or paper towel.
Remove the dipstick (orange
handle).
Wait a f ew minutes af ter turning the
engine of f bef ore you check the oil.
Park the vehicle on a level surf ace.
1.
2.
3. 4.
419 423
416
Oil Check Engine Coolant Check
A dding
Engine Coolant
Owner’s Maintenance
Checks
A dding Engine Oil
Service Station Procedure
Bef ore Driving
361
UPPER MARK
LOWER MARK
MIN
DIPSTICK (orange handle) MAXRESERVE TANK
\f—\f—\fy
y
)!
\f\fy\fy
2009 TSX
Page 365 of 524

µ
µ µ
µ
Fuel economy is not a f ixed number.
It varies based on driving conditions,
driving habits and vehicle condition.
Theref ore, it is not possible f or one
set of estimates to predict f uel
economy precisely f or all drivers in
all environments.
Provides an estimated annual f uel
cost, based on 15,000 miles (20,000
km) per year multiplied by the cost
pergallon(basedonEPAfuelcost
data) divided by the combined f uel
economy.
For more inf ormation on f uel
economy ratings and factors that
af f ect f uel economy, visit(Canada: Visit
)
Represents urban
driving in a vehicle in light traf f ic. A
range of miles per gallon achieved is
also provided.
The EPA f uel economy estimates
shownintheexampletotheright
are a usef ul tool f or comparison
when buying a vehicle. EPA
estimates include:
Represents a combination of city and
highway driving. The scale
represents the range of combined
f uel economy f or other vehicles in
the class.
Represents a
mixture of rural and interstate
driving, in a warmed-up vehicle,
typical of longer trips in f ree-f lowing
traf f ic. A range of miles per gallon achieved is also provided.
www.
fueleconomy.gov www. vehicles.gc.ca
Actual Mileage and EPA Fuel
Economy Estimates Comparison.
Estimated Annual Fuel Cost
City MPG Combined Fuel Economy
Highway MPG
Fuel Economy
362
Combined Fuel
Economy (Sample U.S. EPA label shown) Estimated Annual
Fuel Cost
City MPG Highway MPG
\f—\f—\fy
y
)!
\f\fy\fy
2009 TSX
Page 366 of 524

µµ
µ µ
µ
µ
µ
Aggressive driving (hard
acceleration and braking)
Excessive idling, accelerating and
braking in stop-and-go traf f ic
Cold engine operation (engines
aremoreefficientwhenwarmed
up)
Driving with a heavy load or the
air conditioner running
Improperly inf lated tires
The f ollowing f actors can lower your
vehicle’s f uel economy:
A properly maintained vehicle
maximizes f uel economy. Poor
maintenance can signif icantly reduce
f uel economy. Always maintain your
vehicle according to the maintenance
messages displayed on the multi-
inf ormation display (see
on page ).
For example: Rapid
acceleration, abrupt cornering,
and hard braking increase fuel
consumption.
Aerodynamic drag has a big ef f ect
on f uel mileage at speeds above 45
mph (75 km/h). Reduce your
speed and you reduce the drag.
Trailers, car top carriers, roof
racks and bike racks are also big
contributors to increased drag.
If your vehicle has a
manual transmission, you can
boost your f uel economy by up
shif ting as early as possible.
Idling
results in 0 miles per gallon.
In
particular, a build-up of snow or
mud on your vehicle’s underside
adds weight and rolling resistance.
Frequent cleaning helps your f uel
economy. It puts a heavier
load on the engine, increasing f uel
consumption. An under inf lated tire increases
‘‘rolling resistance,’’ which reduces
f uel economy.
416
CONT INUED
Fuel Economy Factors Use the recommended viscosity motor oil, displaying the A PI
Certif ication Seal (see page
).
Improving Fuel Economy Owner’s
Maintenance Checks Drive moderately
Observe the speed limit
Always drive in the highest gear
possible
Avoid excessive idling
K eep your vehicle clean
A void carrying excess weight in
your vehicle
Maintain proper tire inf lation
419
Vehicle Maint enance Drive Ef f icient ly
Fuel Economy
Bef ore Driving
363
\f—\f—\fy
y
)!
\f\fy\fy
2009 TSX
Page 367 of 524
µµ
Fill the f uel tank until the nozzle automatically clicks of f .
Reset trip counter to zero.
Record the total gallons (liters) needed to ref ill.
Follow one of the simple calculations above.
The A/C
puts an extra load on the engine
which makes it use more f uel. Use
the f resh-air ventilation when
possible.
Combine several short trips into
one. A warmed-up engine is more
f uel ef f icient than a cold one.
Direct calculation is the
recommended source of inf ormation
about your actual f uel economy.
Using f requency of f ill-ups or taking
f uel gauge readings are NOT
accurate measures of f uel economy.
Fuel economy may improve over the
f irst several thousand miles. 1)
2)
3)
4)
Checking Your Fuel Economy
Measuring T echniques
Fuel Economy
Minimize the use of the air
conditioning system
Plan and combine trips
Calculating Fuel Economy
364
Miles driven Gallons of
fuel Miles per
Gallon
100 KilometersLper100km
Liter
\f—\f—\fy
y
)!
\f\fy\fy
2009 TSX
Page 368 of 524

Bef ore installing any accessory:
Make sure the accessory does not
obscure any lights, or interf ere
with proper vehicle operation or
perf ormance.
Bef ore installing any electronic
accessory, have the installer
contact your dealer for assistance.
If possible, have your dealer
inspect the f inal installation.
Do not install accessories on the
side pillars or across the rear
windows. Accessories installed in
theseareasmayinterferewith
proper operation of the side
curtain airbags.
Modif ying your vehicle, or installing
some non-Acura accessories, can
make your vehicle unsaf e. Bef ore
you make any modif ications or add
anyaccessories,besuretoreadthe
f ollowing inf ormation.
Your dealer has Acura accessories
that allow you to personalize your
vehicle. These accessories have
been designed and approved f or your
vehicle, and are covered by warranty.
Although non-Acura accessories may
f it on your vehicle, they may not
meet f actory specif ications, and
could adversely af f ect your vehicle’s
handling and stability.
Be sure electronic accessories do
not overload electrical circuits
(see page ) or interf ere with
proper operation of your vehicle.
When properly installed, cellular
phones, alarms, two-way radios, and
low-powered audio systems should
not interf ere with your vehicle’s
computer controlled systems, such
as your airbags, anti-lock brakes, and
tire pressure monitoring system.
474
A ccessories
A ccessories and Modif ications
Bef ore Driving
365
Improper accessories or
modifications can affect your
vehicle’s handling, stability, and
performance, and cause a
crash in which you can be hurt
or killed.
Follow all instructions in this
owner’s manual regarding
accessories and modifications.
——y
y
)!
yy
2009 TSX