Page 353 of 442

Always change the oil and f ilter
according to the maintenance
messages shown on the inf ormation
display or multi-inf ormation display
(depending on models). The oil and
f ilter collect contaminants that can
damage your engine if they are not
removed regularly.Run the engine until it reaches
normal operating temperature,
then shut it off.
Open the hood, and remove the
engine oil f ill cap. Remove the oil
drain bolt and washer f rom the
bottom of the engine. Drain the oil
into an appropriate container.Remove the oil f ilter, and let the
remaining oil drain. A special
wrench (available from your
dealer) is required.
Install a new oil f ilter according to
the instructions that come with it. Check the oil f ilter to make sure
its gasket did not stick to the f ilter
base. A stuck gasket could cause
an oil leak.
Changing the oil and f ilter requires
special tools and access f rom
underneath the vehicle. The vehicle
should be raised on a service station-
type hydraulic lif t f or this service.
Unless you have the knowledge and
proper equipment, you should have
this maintenance done by a skilled
technician. 1.
2.3.
4.
5.
Changing the Oil and Filter
Maint enance
349
WASHER
OIL
FILTER
OIL DRAIN
BOLT
——
y
y
() yy
Page 357 of 442
Check the fluid level in the
windshield washer reservoir at least
monthly during normal use.
To check the
windshield washer fluid level, open
the hood and look the windshield
washer reservoir located behind the
left headlight. You will see a ‘‘1/2’’
mark on the reservoir.
You will see a ‘‘WASHER FLUID
LOW’’ message on the multi-
info rmation display (see page ).
The
washer level indicator will come
on when the level is low (see page
).
85
74
On U.S. models:
On Canadian RDX with TechnologyPackage model
On Canadian RDX model
CONT INUED
Windshield Washers
Maint enance
353
WASHER LEVEL INDICATOR
Front
WINDSHIELD WASHER RESERVOIR
——
y
y
() yy
Page 359 of 442

CONT INUED
The transmission should be drained
and ref illed with new f luid when this
service is shown on the inf ormation
display or multi-inf ormation display
(depending on models).Remove the dipstick (yellow loop)
f rom the transmission, and wipe it
with a clean cloth.
If you are not sure how to add f luid
or you do not have the proper
equipment to reach the transmission
f luid f ill hole, you should have this
maintenance done by a skilled
technician.
Park the vehicle on level ground.
Start the engine until the radiator
f an comes on and rotate it once.
Turn of f the engine. For accurate
results, wait at least 60 seconds,
andnomorethan90seconds,
af ter turning of f the engine to
check the f luid level.
Check the f luid level with the engine
at normal operating temperature.
Insert the dipstick all the way into
the transmission securely as
shown in the illustration.
Remove the dipstick and check
the f luid level. It should be
between the upper and lower
marks.
1.
2.
3.
4.
Automatic Transmission Fluid
Maint enance
355
DIPSTICK
LOWER MARK
UPPER MARK
HOT
MARK
——
y
y
() yy
Page 371 of 442

Your vehicle is equipped with a
intercooler on the engine to cool the
air f low f rom a turbo charger into
the engine. The intercooler f ins bend
easily. Do not push them with your
f inger.Have your dealer replace the filter
when this service is indicated by a
maintenance message on the
inf ormation display or multi-
inf ormation display (depending on
the models). It should be replaced
every 15,000 miles (24,000 km) if you
drive primarily in urban areas that
have high concentrations of soot in
the air, or if the flow from the
heating and cooling system becomes
less than usual. This f ilter removes the dust and
pollenthatisbroughtinfromthe
outside through the heating and
cooling system.
A udio A ntenna, Intercooler, Dust and Pollen Filter
A udio A ntenna
Intercooler
Dust and Pollen Filter
Maint enance
367
ANTENNA
INTERCOOLER
Your vehicle is equipped with an
antenna at the rear of the roof . Bef ore
using a ‘‘drive-through’’ car wash,
remove the antenna by unscrewing it by
hand. This prevents the antenna f rom
being damaged by the car wash brushes. Do not spray water (f rom such sources
as garden hoses, high pressure
sprayers) into the engine compartment.
It may cause serious damage to your
vehicle, and could also damage the
intercooler f ins.
——
y
y
() yy
Page 379 of 442

To help increase tire lif e and
distribute wear more evenly, rotate
the tires according to the
maintenance messages displayed on
the inf ormation display or multi-
inf ormation display (depending on
models). Move the tires to the
positions shown in the diagram each
time they are rotated. If you
purchase directional tires, rotate
only f ront-to-back.Replace your tires with radial tires of
the same size, load range, speed
rating, and maximum cold tire
pressure rating (as shown on the
tire’s sidewall).
Mixing radial and bias-ply tires on
your vehicle can reduce braking
ability, traction, and steering
accuracy. Using tires of a dif f erent
size or construction can cause the
ABS and vehicle stability assist
system (VSA) to work inconsistently.
TheABSworksbycomparingthe
speed of the wheels. When replacing
tires, use the same size originally
supplied with the vehicle. Tire size
and construction can affect wheel
speed and may cause the system to
activate.
It is best to replace all f our tires at
thesametime.If thatisnotpossible
or necessary, replace the two f ront
tires or two rear tires as a pair.
Replacing just one tire can seriously
af f ect your vehicle’s handling.
If you ever replace a wheel, make
sure the new one matches the
specif ications of the original.
Replacement wheels are available at
your dealer.
Tires
T ire Rotation
Replacing T ires and Wheels
Maint enance
375
Front Front
(For Non-directional
Tires and Wheels) (For Directional
Tires and Wheels)
——
y
y
() yy
Page 383 of 442
If your vehicle’s battery is
disconnected or goes dead, the audio
system will disable itself. The next
timeyouturnontheradioyouwill
see ‘‘ ’’ in the frequency
display. Use the preset bars or preset
buttons (depending on models) to
enter the five-digit code (see page
). The navigation system will also
disableitself.Thenexttimeyouturn
on the ignition switch, the system
will require you to enter a PIN
bef ore it can be used. Ref er to the
navigation system manual.
239On RDX with Technology Package
model
Checking the Battery
Maint enance
379
——
y
y
() yy
Page 395 of 442

CONT INUED
The reading of the vehicle’s
temperature gauge on the
inf ormation display or multi-
inf ormation display (depending on
models) should stay in the midrange.
If it climbs to the H (Hot) mark, you
should determine the reason (hot
day, driving up a steep hill, etc.).If the temperature gauge reading
stays at the H (Hot) mark, turn of f
the engine. 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 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.
If the coolant temperature rises to
224°F (118°C) or more, the
temperature gauge will appear on
the display and blink for several
times. At the same time, the beeper
will sound once.
If your vehicle overheats, you should
take immediate action. The only
indication may be the temperature
gauge climbing to the H (Hot) mark.
Or you may see steam or spray
coming f rom under 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
accessories, and turn on the
hazard warning indicators.
1. 2.
3.
4.
If theEngineOverheats
T aking Care of t he Unexpect ed
391
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
reading at the H (Hot) mark can cause
serious damage to the engine.
——
y
y
() yy
Page 397 of 442

Let the vehicle sit for a minute.
Op en the hood, and check the oil
level (see page ). An engine
very low on oil can lose pressure
during cornering and other driving
maneuvers. If
the charging system
indicator comes on brightly
wh en the engine is running, the
battery is not being charged.
Safely
pull off the road, and shut
off the engine. Turn on the hazard
warning lights.
This
indicator should never
come on when the engine is
running. If it starts flashing or stays
on, the oil pressure has dropped very
low or lost pressure. Serious engine
damage is possible, and you should
take immediate action.
Start the engine, and watch the oil
pressure indicator. If it does not go
out within 10 seconds, turn off the
engine. There is a mechanical
problem that needs to be repaired
befo re you can continue driving
(see on page
). You
will also see a ‘‘CHECK
CHARGI NG SYSTEM’’ message on
the multi-information display (see
page ).
Immediately turn off all electri cal
accessories. Try not to use other
electrically operated controls such as
the power windows. Keep the engine
running; starting the engine will
discharge the battery rapidly.
Go to a service station or garage
where you can get technical
assistance.
If
necessary, add oil to bring the
level back to the full mark on the
dipsti ck (see page ).
You
will also see an ‘‘OIL
PRESSURE LOW’’ message on the
multi-info rmation display (see page
). 1.
2.
4. 3.
283
403 84
84 347
On RDX with Technology Package
model
On RDX with Technology Package model
L ow Oil Pressure Indicator Charging System Indicator
Emergency T owing
L ow Oil Pressure Indicator, Charging System Indicator
T aking Care of t he Unexpect ed
393
Running the engine with low oil
pressure can cause serious mechanical
damage almost immediately. Turn of f
the engine as soon as you can saf ely get
the vehicle stopped.
——
y
y
() yy