2009 Acura RL engine overheat

Your vehicle is equipped with a tire
pressure monitoring system (TPMS)
that turns on every time you start the
engine and monitors the pressure in
your tires while driving.
Each tire has its own pressure
sensor. If the air pressure of a tire
becomes signif icantly low, the
sensor in that tire immediately sends
a signal that causes the low tire
pressure/TPMS indicator in the
instrumental panel and the
appropriate tire position indicator on
thetirepressuremonitoronthe
multi-inf ormation display (see page)tocomeon. Refer to page for tire inflation
guidelines.
If there is a problem with the TPMS,
this indicator begins to f lash. It stops
flashing after approximately 1
minute, then stays on. You will also
see a ‘‘CHECK TPMS SYSTEM’’
message on the multi-inf ormation
display (see page ).
When the low tire pressure/TPMS
indicator is on, one or more of your
tires is signif icantly underinf lated.
The multi-inf ormation display also
shows a ‘‘CHECK TIRE PRESSURE’’
message (see page ). You should
stop and check your tires as soon as
possible, and inflate them to the
proper pressure as indicated on the
vehicle’s tire inf ormation placard.
Driving on a signif icantly under
inf lated tire causes the tire to
overheat and can lead to tire failure.
Underinf lation also reduces f uel
efficiency and tire tread life, and may
af f ect the vehicle’s handling and
stopping ability.
Becausetirepressurevariesby
temperature and other conditions,
the low tire pressure/TPMS
indicator may come on unexpectedly. For example, if you check and fill
your tires in a warm area, then drive
in extremely cold weather, the tire
pressure will be lower than
measured and could be underinf lated
and cause the low tire pressure/
TPMS indicator to come on. Or, if
youcheckandadjustyourtire
pressure in cooler conditions, and
drive into extremely hot conditions,
the tire may become overinf lated.
However, the low tire pressure/
TPMS indicator will not come on if
thetiresareoverinflated.
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Low Tire Pressure/
TPMS Indicator
Tire Pressure Monitoring System (TPMS)
Driving
429
2009 RL

Crosswinds and air turbulence
caused by passing trucks can disrupt
your steering and cause the trailer to
sway. When being passed by a large
vehicle, keep a constant speed, and
steer straight ahead. Do not try to
make quick steering or braking
corrections.
Follow all normal precautions when
parking, including f irmly setting the
parking brake and putting the
transmission in Park. Also, place
wheel chocks at each of the trailer’s
tires.
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.
Always drive slowly and have
someone guide you when backing up.
Grip the of the steering
wheel; turn the wheel to the lef t to
get the trailer to move to the lef t,
andturnthewheelrighttomovethe
trailer to the right.Your vehicle is not designed to be
towed behind a motor home. If your
vehicle needs to be towed in an
emergency, see page .
If you must stop when f acing uphill,
use the f oot brake or parking brake.
Do not try to hold the vehicle in
placebypressingontheaccelerator,
as this can cause the automatic
transmission to overheat.
When driving down hills, reduce
your speed, and shif t down to S
position, or use the paddle shif ters to
the lower gear (3, 2 or 1) in the S
position. When towing a trailer, do
not ‘‘ride’’ the brakes, and remember,
it will take longer to slow down and
stop when towing a trailer. 519
bottom
Backing Up
Handling Crosswinds and Buf f et ing
Parking
Driving on Hills
Towing Your Vehicle
Towing a Trailer, Towing Your Vehicle
442
2009 RL

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Remove the electrical connector
f rom the bulb by pushing on the
tab and pulling the connector
down.
Remove the bulb by turning it one-
quarter turn counterclockwise.
Remove the left or right side
engine compartment cover f rom
thesideyouareworkingonby
caref ully pulling the cover out (see
page ).
If youarereplacingthebulbon
the driver’s side, remove the
battery cover (see page ).
Your vehicle has halogen high beam
headlight bulbs which are also used
f or the daytime running light.
Handle it by its base and protect the
glass from contact with your skin or
hard objects. If you touch the glass,
clean it with denatured alcohol and a
clean cloth.
2.
3.
1.
457 491
Lights
Replacing a Headlight/Daytime
Running L ight Bulb
Maint enance
469
BULB
CONNECTOR
Halogen bulbs get very hot when lit. Oil,
perspiration, or a scratch on the glass
can cause the bulb to overheat and
shatter.
2009 RL

Your vehicle uses halogen light
bulbs. When replacing a bulb, handle
it by its plastic case, and protect the
glass from contact with your skin or
hard objects. If you touch the glass,
clean it with denatured alcohol and a
clean cloth.
Install the new bulb into the
socket.
Insert the socket back into the
headlight assembly. Turn it
clockwise to lock it in place.
Turn on the lights to make sure
the new bulb is working.
Remove the socket from the
headlight assembly by turning it
one-quarter turn counterclockwise.
Pull the bulb straight out of its
socket. (Passenger’s side)
Reinstall the windshield washer
reservoir.
Reinstall the engine compartment
side cover.
(Driver’s side)
Reinstall the battery cover.
5.
6.
7.
8.
9.
3.
4.
Lights
ReplacingaFogLightBulb
472
SOCKET
BULB
CLIP
Halogen bulbs get very hot when lit. Oil,
perspiration, or a scratch on the glass
can cause the bulb to overheat and
shatter.
2009 RL

This section covers the more
common problems that motorists
experience with their vehicles. It
gives you inf ormation about how to
safely evaluate the problem and what
to do to correct it. If the problem has
stranded you on the side of the road,
you may be able to get going again.
If not, you will also f ind instructions
on getting your vehicle towed.......................
Compact Spare Tire .494
....................
Changing a Flat Tire .495
.............
If the Engine Won’t Start .499
................................
Jump Starting .500
..............
If the Engine Overheats .503
.........
Low Oil Pressure Indicator .506
..........
Charging System Indicator .506
.......
Malf unction Indicator Lamp .507
...............
Brake System Indicator .508
Opening the Fuel Fill Door
....................................
Manually .509
..............................................
Fuses .510
..............................
Fuse Locations .513
......................
Emergency Towing .519
..........
If Your Vehicle Gets Stuck .519
Taking Care of the Unexpected
T aking Care of t he Unexpect ed
493
2009 RL

The pointer of the vehicle’s
temperature gauge should stay in
the midrange. If it climbs to the red
mark, you should determine the
reason (hot day, driving up a steep
hill, etc.).
If your vehicle overheats, you should
take immediate action. The only
indicationmaybethetemperature
gauge climbing to or above the red
mark. Or you may see steam or
spray coming f rom under the hood.If you do not see steam or spray,
leave the engine running and
watch the temperature gauge. If
the high heat is due to overloading,
the engine should start to cool
down almost immediately. If it
does, wait until the temperature
gauge comes down to the midpoint,
then continue driving.
If the temperature gauge stays at
the red mark, turn of f the engine.
Look f or any obvious coolant leaks,
such as a split radiator hose.
Everything is still extremely hot,
so use caution. If you f ind a leak, it
must be repaired bef ore you
continue driving (see
on page ).
If you see steam and/or spray
coming f rom under the hood,
turn of f the engine. Wait until
you see no more signs of steam
or spray, then open the hood.
Saf ely pull to the side of the road.
Put the transmission in Park, and
set the parking brake. Turn of f all
the accessories, and turn on the
hazard warning lights.
1.
2. 3.
4.
5.
519
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Emergency
Towing
If theEngineOverheats
T aking Care of t he Unexpect ed
503
Steam and spray from an
overheated engine can
seriously scald you.
Do not open the hood if steam
is coming out.
Driving with the temperature gauge
pointer at the red mark can cause
serious damage to the engine.
2009 RL

If you do not f ind an obvious leak,
check the coolant level in the
radiator reserve tank. Add coolant
if the level is below the MIN mark.
If there was no coolant in the
reserve tank, you may need to add
coolant to the radiator. Let the
engine cool down until the pointer
reaches the middle of the tempera-
ture gauge, or lower, bef ore check-
ing the radiator.Using gloves or a large heavy
cloth, turn the radiator cap
counterclockwise, without pushing
down, to the f irst stop. Af ter the
pressure releases, push down on
the cap, and turn it until it comes
off.
Put the radiator cap back on
tightly. Run the engine, and check
the temperature gauge. If it goes
back to the red mark, the engine
needs repair (see
on page ).
If the temperature stays normal,
check the coolant level in the
radiator reserve tank. If it has
gone down, add coolant to the
MAX mark. Put the cap back on
tightly.
Start the engine, and set the
interior temperature to maximum
(climate control to FULL AUTO at
‘‘ ’’). Add coolant to the
radiator up to the base of the f iller
neck. If you do not have the
proper coolant mixture available,
you can add plain water.
Remember to have the cooling
system drained and ref illed with
the proper mixture as soon as you
can.
6.
7.
8.
9.10.
11. 519
Emergency
Towing
If theEngineOverheats
504
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.
2009 RL

You can still drive your vehicle even
if this message appears on the multi-
inf ormation display, however you
should check the temperature gauge
while driving.
If you notice the temperature gauge
climbing to or above the red mark,
saf ely pull to the side of the road.
Follow the instructions on pagesand .
If there is a problem with the
radiator system, you will see a
‘‘CHECK RADIATOR SYSTEM’’ on
the multi-information display.
If you see this message, the engine
has probably overheated. You should
take your vehicle to a dealer, and
have it repaired as soon as possible. 503504
Check Radiator System
If theEngineOverheats
T aking Care of t he Unexpect ed
505
2009 RL