
The rear dif f erential should be
drained and ref illed with new f luid
when this service is indicated by a
maintenance message on the
inf ormation display or multi-
inf ormation display. This service
may be needed more of ten under
certain driving conditions (see page). Always use Honda VTM-4
Dif f erential Fluid, and have your
dealer replace the rear differential
f luid.
The transf er assembly should be
drained and ref illed with new f luid
when this service is indicated by a
maintenance message on the
inf ormation display or multi-
inf ormation display.
Always use Hypoid gear oil GL4 or
GL5 with a viscosity of SAE 90 or
80W-90, and have your dealer
replace the transfer assembly fluid.
324
Rear Dif f erential Fluid
Transf er Assembly Fluid
Rear Differential Fluid, Transfer Assembly Fluid
Maint enance
333
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2009 Ridgeline

The f luid level should be between
theMINandMAXmarksontheside
of the reservoir. If the level is at or
below the MIN mark, your brake
system needs attention. Have the
brake system inspected f or leaks or
worn brake pads.
Always use Honda Heavy Duty
Brake Fluid DOT 3. If it is not
available, you should use only DOT 3
or DOT 4 f luid, f rom a sealed
container, as a temporary
replacement.
Using any non-Honda brake f luid can
cause corrosion and decrease the lif e
of the system. Have the brake
system f lushed and ref illed with
Honda Heavy Duty Brake Fluid
DOT 3 as soon as possible.
Brake f luid marked DOT 5 is not
compatible with your vehicle’s
braking system and can cause
extensive damage.
Replace the brake f luid when this
service is indicated on a maintenance
message on the inf ormation display
or multi-inf ormation display
(depending on models).
Check the f luid level in the brake
f luid reservoir monthly.
Brake Fluid
334
MAX
MIN
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2009 Ridgeline

The floor mats that came with your
vehicle hook over the f loor mat
anchors. This keeps the f loor mats
f rom sliding f orward, possibly
interf ering with the pedals, or
backwards, making the f ront
passenger’s weight sensors
inef f ective.
If you remove a f loor mat, make sure
tore-anchoritwhenyouputitback
in your vehicle.A non-Honda f loor mat may not f it
your vehicle properly. This could
prevent the proper operation of the
f olding rear seats and the passenger’s
seat weight sensors. We recommend
using genuine Honda f loor mats. Do
not put additional f loor mats on top
of the anchored mats.
This f ilter removes the dust and
pollenthatisbroughtinfromthe
outside through the heating and
cooling system/climate control
system.
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/climate
control system becomes less than
usual.
Floor Mats, Dust and Pollen Filter
Floor Mats
Dust and Pollen Filter
Maint enance
345
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2009 Ridgeline

In addition to proper inf lation,
correct wheel alignment helps to
decrease tire wear. If you f ind a tire
is worn unevenly, have your dealer
check the wheel alignment.
Have your dealer check the tires if
you f eel a consistent vibration while
driving. A tire should always be
rebalanced if it is removed f rom the
wheel. When you have new tires
installed, make sure they are
balanced. This increases riding
comf ort and tire lif e. For best results,
have the installer perform a dynamic
balance.
The service lif e of your tires is
dependent on many f actors,
including, but not limited to, driving
habits, road conditions, vehicle
loading, inf lation pressure,
maintenance history, speed, and
environmental conditions (even
when the tires are not in use).
In addition to your regular
inspections and inf lation pressure
maintenance, it is recommended that
you have annual inspections
perf ormed once the tires reach f ive
years old. It is also recommended
that all tires, including the spare, be
removed from service after 10 years
from the date of manufacture,
regardless of their condition or state
of wear.
The last f our digits of the TIN (tire
identif ication number) are f ound on
the sidewall of the tire and indicate
the date of manufacture (See
on page ). 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.
392 Tire Rotation
T ire Maintenance
Tire Service Lif e
Tire
Labeling
Tires
Maint enance
351
Front
(For Non-directional
Tires and Wheels) Front
(For Directional
Tires and Wheels)
On vehicles with aluminum wheels,
improper wheel weights can damage
your vehicle’s aluminum wheels. Use
only Honda wheel weights f or
balancing.
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2009 Ridgeline

Block the rear wheels.
If the vehicle is to be stored f or a
longer period, it should be
supported on jackstands so the
tires are of f the ground.
Leave one window open slightly (if
the vehicle is being stored
indoors).
Disconnect the battery.
Support the f ront wiper blade
arms with a f olded towel or rag so
they do not touch the windshield.
To minimize sticking, apply a
silicone spray lubricant to all door,
In-Bed Trunk lid, and tailgate seals.
Also, apply a vehicle body wax to
the painted surfaces that mate
with the door, In-Bed Trunk lid
and tailgate seals.
If your vehicle’s battery is
disconnected, or goes dead, the time
setting may be lost. To reset the time,
see page .
If your vehicle’s battery is
disconnected or goes dead, the audio
system may disable itself . The next
timeyouturnontheradioyouwill
see ‘‘CODE’’ in the f requency display.
Use the preset bars to enter the 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.
If you need to park your vehicle f or
an extended period (more than 1
month), there are several things you
should do to prepare it f or storage.
Proper preparation helps prevent
deterioration and makes it easier to
get your vehicle back on the road. If
possible, store your vehicle indoors.
Leave the parking brake off. Put
the transmission in Park.
Cleantheinterior.Makesurethe
carpeting, floor mats, etc., are
completely dry.
Wash and dry the exterior
completely.
Fill the f uel tank.
205
204
CONT INUED
On models without navigation system
On models with navigation systemVehicle Storage
Checking the Battery, Vehicle Storage
Maint enance
357
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Use the compact spare tire as a
temporary replacement only. Get
your regular tire repaired or replaced,
and put it back on your vehicle as
soon as you can.
Check the inf lation pressure of the
compact spare tire every time you
check the other tires. It should be
inf lated to:
Follow these precautions:Replace the tire when you can see
the tread wear indicator bars. The
replacement should be the same size
and design tire, mounted on the
same wheel. The spare tire is not
designed to be mounted on a regular
wheel, and the spare wheel is not
designed f or mounting a regular tire.
Never exceed 50 mph (80 km/h).
This tire gives a harsher ride and
less traction on some road
surf aces. Use greater caution
while driving.
Do not mount snow chains on a
compact spare. Do not use your compact spare
tire on another vehicle unless it is
thesamemakeandmodel.
The low tire pressure indicator
comes on and stays on af ter you
replace the flat tire with the compact
spare tire. Af ter several miles
(kilometers) driving with the
compact spare tire, the TPMS
indicator comes on and the low tire
pressure indicator goes of f .
After the flat tire is replaced with the
spare tire, the low tire pressure/
TPMS indicator stays on. After
several miles (kilometers) driving
with the spare, this indicator begins
to f lash, then stays on again. You will
also see a ‘‘CHECK TPMS
SYSTEM’’ message on the multi-
inf ormation display (see page ). 284
On models without navigation system
On models with navigation system
Compact Spare Tire
360
INDICATOR LOCATION MARK
TREAD WEAR INDICATOR BAR
60 psi (420 kPa , 4.2 kgf/cm)
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2009 Ridgeline

Saf ely pull of f the road, and shut
of f the engine. Turn on the hazard
warning indicators.
Let the vehicle sit f or a minute.
Open 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 necessary, add oil to bring the
level back to the full mark on the
dipstick (see page ).If the charging system
indicator comes on brightly
when the engine is running, the
battery is not being charged.
This indicator should never
come on when the engine is
running. If it starts f lashing 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 of f the
engine. There is a mechanical
problem that needs to be repaired
bef ore you can continue driving
(seeon page
).
You will also see a ‘‘CHECK
ENGINE OIL LEVEL’’ message on
the multi-information display when
this indicator comes on.
Go to a service station or garage
where you can get technical
assistance.
Immediately turn of f all electrical
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.
You will also see a ‘‘CHECK
CHARGING SYSTEM’’ message on
the multi-information display (see
page ).
1.
2.
3.
4.
253
326
383 90
On models with navigation system
On models with navigation system
L ow Oil Pressure Indicator
Charging System Indicator
Emergency T owing
L ow Oil Pressure Indicator, Charging System Indicator
374
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.
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2009 Ridgeline

If this indicator comes on
while driving, it means one
of the engine’s emissions control
systems may have a problem. Even
though you may f eel no dif f erence in
your vehicle’s perf ormance, it can
reduce your f uel economy and cause
increased emissions. Continued
operation may cause serious damage.
If you have recently ref ueled your
vehicle, the indicator coming on
could be due to a loose or missing
f uel f ill cap. Tighten the cap until it
clicks at least once. Tightening the
cap will not turn the indicator of f
immediately; it can take several days
of normal driving. If the indicator comes on repeatedly,
even though it may turn of f as you
continue driving, have your vehicle
checked by the dealer as soon as
possible.
The indicator may also come on with
the ‘‘D’’ indicator.
You will also see a ‘‘CHECK FUEL
CAP’’ message on the inf ormation
display.
You will also see a ‘‘TIGHTEN FUEL
CAP’’ message on the multi-
inf ormation display.
You will also see a ‘‘CHECK
EMISSION SYSTEM’’ message on
the multi-information display (see
page ).90On models without navigation system
On models with navigation system
On models with navigation system
Malf unction Indicator L amp
T aking Care of t he Unexpect ed
375
If you keep driving with the
malf unction indicator lamp on, you can
damage your vehicle’s emissions
controls and engine. Those repairs may
not be covered by your vehicle’s
warranties.
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2009 Ridgeline