2004 Lexus GX470 low oil pressure

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
xiv
Page
1Automatic transmission second start indicator light 386 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Unengaged Parkº warning light 59
. . . . . . . . . . . . . . .
3Automatic transmission fluid temperature
warning light 59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Low washer fluid warning light 63
. . . . . . . . . . . . . . . . .
5Automatic transmission indicator lights 378 . . . . . .
6Driver's seat belt reminder light 55
. . . . . . . . . . . . . . . .
7Turn signal indicator light 36
. . . . . . . . . . . . . . . . . . . . .
8Brake system warning light 54
. . . . . . . . . . . . . . . . . . . .
9Headlight high beam indicator light 36
. . . . . . . . . . . .
10Anti-lock brake system warning light 58
. . . . . . . . . . .
11Open door warning light 59
. . . . . . . . . . . . . . . . . . . . . . .
12Tachometer 51
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13Headlight indicator light 33
. . . . . . . . . . . . . . . . . . . . . . .
14Cruise control indicator light 394
. . . . . . . . . . . . . . . .
15Engine oil replacement reminder light 62
. . . . . . . . . .
16Slip indicator light 406, 408, 411, 413
. . . . . . . . . . . . .
17Low engine oil pressure warning light 61
. . . . . . . . . .
18Discharge warning light 60
. . . . . . . . . . . . . . . . . . . . . . . Page
19Engine coolant temperature gauge
49
. . . . . . . . . . . . .
20Malfunction indicator lamp 57
. . . . . . . . . . . . . . . . . . . .
21Vehicle stability control system off
indicator light 408 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22Roll sensing of curtain shield airbags off
indicator light 183 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23Kinetic dynamic suspension system
warning light 60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24Center differential lock indicator light 386
. . . . . . . .
25Vehicle stability control system and active
traction control system warning light 60 . . . . . . . . . . .
26Downhill assist control system
indicator light 410 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27Rear height control indicator lights 403
. . . . . . . . . . .
28Security indicator light 14, 29
. . . . . . . . . . . . . . . . . . . .
29SRS warning light 56
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30Trip meter reset knob 52
. . . . . . . . . . . . . . . . . . . . . . . . .
31Odometer and trip meter 52
. . . . . . . . . . . . . . . . . . . . . .
32Low fuel level warning light 62
. . . . . . . . . . . . . . . . . . . .
33Low tire pressure warning light 62
. . . . . . . . . . . . . . . .
34Fuel gauge 48
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
xvi
Page
1Automatic transmission second start indicator light 386 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Unengaged Parkº warning light 59
. . . . . . . . . . . . . . .
3Automatic transmission fluid temperature
warning light 59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Low washer fluid warning light 63
. . . . . . . . . . . . . . . . .
5Automatic transmission indicator lights 378 . . . . . .
6Driver's seat belt reminder light 55
. . . . . . . . . . . . . . . .
7Turn signal indicator light 36
. . . . . . . . . . . . . . . . . . . . .
8Brake system warning light 54
. . . . . . . . . . . . . . . . . . . .
9Headlight high beam indicator light 36
. . . . . . . . . . . .
10Anti-lock brake system warning light 58
. . . . . . . . . . .
11Open door warning light 59
. . . . . . . . . . . . . . . . . . . . . . .
12Tachometer 51
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13Tail light indicator light 33
. . . . . . . . . . . . . . . . . . . . . . . .
14Cruise control indicator light 394
. . . . . . . . . . . . . . . .
15Slip indicator light 406, 408, 411, 413
. . . . . . . . . . . . .
16Low engine oil pressure warning light 61
. . . . . . . . . .
17Discharge warning light 60
. . . . . . . . . . . . . . . . . . . . . . .
18Engine coolant temperature gauge 49
. . . . . . . . . . . . . Page
19Malfunction indicator lamp
57
. . . . . . . . . . . . . . . . . . . .
20Vehicle stability control system off
indicator light 408 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21Roll sensing of curtain shield airbags off
indicator light 183 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22Kinetic dynamic suspension system
warning light 60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23Center differential lock indicator light 386
. . . . . . . .
24Vehicle stability control system and active
traction control system warning light 60 . . . . . . . . . . .
25Downhill assist control system
indicator light 410 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26Rear height control indicator lights 403
. . . . . . . . . . .
27Security indicator light 14, 29
. . . . . . . . . . . . . . . . . . . .
28SRS warning light 56
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29Trip meter reset knob 52
. . . . . . . . . . . . . . . . . . . . . . . . .
30Odometer and trip meter 52
. . . . . . . . . . . . . . . . . . . . . .
31Low fuel level warning light 62
. . . . . . . . . . . . . . . . . . . .
32Low tire pressure warning light 62
. . . . . . . . . . . . . . . .
33Fuel gauge 48
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Finish
GAUGES, METERS AND SERVICE REMINDER INDICATORS
61
NOTICE
Do not continue driving if the engine drive belt is brokenor loose.
(m) Low Engine Oil Pressure Warning Light
This light warns that the engine oil pressure is too low.
If it flickers or stays on while you are driving, pull off the road
to a safe place and stop the engine immediately. Call a Lexus
dealer or qualified repair shop for assistance. The light may occasionally flicker when the engine is idling or
it may come on briefly after a hard stop. There is no cause for
concern if it then goes out when the engine is accelerated
slightly.
The light may come on when the oil level is extremely low. It
is not designed to indicate low oil level, and the oil level must
be checked using the oil level dipstick.
NOTICE
Do not drive the vehicle with the warning light on Ð
even for one block. It may ruin the engine.

Finish
GAUGES, METERS AND SERVICE REMINDER INDICATORS
62
(n) Engine Oil Replacement Reminder Light (for vehicles sold in U.S.A.)
This light reminds you when to replace the engine oil.
This light will come on when the ignition key is turned to ONº
and will go off after about a few seconds.
When you drive for about 7200 km (4500 miles) after the
engine oil replacement, this light illuminates for about 3
seconds and then flashes for about 12 seconds with the
ignition key turned to ONº position. If you continue driving
without the engine oil replacement, and if the driving range
exceeds 8000 km (5000 miles), the light will come on after the
ignition key is turned to ONº position. The light will remain on
thereafter.
If the light is flashing, we recommend that you replace the
engine oil at an early opportunity depending on the driving and
road condition. If the light comes on, replace it as soon as
possible.
You need to reset the light after the engine oil replacement.
Reset the light by following the procedure below:
1. Turn the ignition key to the OFFº position with the odometer
reading shown. (For details, see Odometer and trip meterº on
page 50.)
2. Turn the ignition key to the ONº position while holding down
the trip meter reset knob.
Hold down the knob until the light goes off. Before the light
goes off, it illuminates for 3 seconds, flashes for 2 seconds and
illuminates for 1 second. If the system fails to reset, the light will remain flashing. In this
case, return to step 1 and try again.(o) Low Tire Pressure Warning Light
This light warns that the tire pressure of one or more of your
tires
(including the spare tire) is low. The light comes on when
the ignition key is turned to the ONº position. It goes off after
a few seconds. This indicates that the tire pressure warning
system is functioning properly.
If the warning light comes on, stop your vehicle in a safe place
as soon as possible and check that the inflation pressure of all
tires (including the spare tire) is as specified on the tire and
loading information label. (See Checking tire inflation
pressureº on page 483.) The light should go off a few minutes
after the tire pressure is adjusted.
If the warning light blinks, the tire pressure warning system
may be malfunctioning. Contact your Lexus dealer.
For details, see Tire pressure warning systemº on page 369.
(p) Low Fuel Level Warning Light
This light comes on when the fuel level in the tank becomes
very low. Fill the tank as soon as possible.
On inclines or curves, due to the movement of fuel in the tank,
the low fuel level warning light may come on earlier than usual.

MAINTENANCE
518Brakes
At a safe place, check that the brakes do not pull to one side
when applied.
Parking brake
Check that the lever has the proper travel and that, on a safe
incline,
your vehicle is held securely with only the parking brake
applied.
Automatic transmission Parkº mechanism
Check the lock release button of the selector lever for proper
and smooth operation. On a safe incline, check that your
vehicle is held securely with the selector lever in Pº position
and all brakes released.
Vehicle exterior
Items listed below should be performed from time to time,
unless otherwise specified.
Fluid leaks
Check underneath for leaking fuel, oil, water or other fluid after
the vehicle has been parked for a while. If you smell fuel fumes
or notice any leak, have the cause found and corrected
immediately.
Doors and engine hood
Check that all side doors and back door, operate smoothly and
all latches lock securely. Make sure the engine hood
secondary latch secures the hood when the primary latch is
released.
Tire inflation pressure
Check the pressure with a gauge every two weeks,
or at least once a month and adjust as shown on the
tire pressure label. See page 559 for additional
information.
Tire surface
Check the tires carefully for cuts, damage or
excessive wear. See page 574 for additional
information.
Wheel nuts
When checking the tires, make sure to check the nuts
for looseness. Tighten them if necessary.
Tire rotation
Rotate the tires according to the maintenance
schedule. (For scheduled maintenance information,
please refer to the Owner's Manual
Supplement/Scheduled Maintenanceº.) See page 573
for additional information.

ENGINE
540
FUEL PUMP SHUT OFF SYSTEM
The fuel pump shut off system stops supplying fuel to the
engine to minimize the risk of fuel leakage when the engine
stalls or an airbag inflates upon collision. To restart the engine
after the fuel pump shut off system activates, turn the ignition
switch to ACCº or LOCKº once and start it.
CAUTION
Inspect the ground under the vehicle before restarting
the engine. If you find that liquid has leaked onto the
ground, it is the fuel system that has been damaged and
it is in need of repair. In this case, do not restart the
engine.
FACTS ABOUT ENGINE OILCONSUMPTION
Functions of engine oil
Engine oil has the primary function of lubricating and cooling
the inside of the engine, and plays a major role in maintaining
the engine in proper working order.
Engine oil consumption
It is normal that an engine should consume some engine
oil during normal engine operation. The causes of oil
consumption in a normal engine are as follows.
Oil is used to lubricate pistons, piston rings and cylinders.
A thin film of oil is left on the cylinder wall when a piston
moves downwards in the cylinder. High negative pressure
generated when the vehicle is decelerating sucks some of
this oil into the combustion chamber. This oil as well as
some part of the oil film left on the cylinder wall is burned by
the high temperature combustion gases during the
combustion process.
 Oil is also used to lubricate the stems of the intake valves.
Some of this oil is sucked into the combustion chamber
together with the intake air and is burned along with the fuel.
High temperature exhaust gases also burn the oil used to
lubricate the exhaust valve stems.

CHASSIS
569
Glossary of tire terminology
Tire related termMeaning
Accessory weightthe combined weight (in excess of those standard items which may be rep\
laced)
of automatic transmission, power steering, power brakes, power windows, \
power
seats, radio, and heater, to the extent that these items are available as
factory-installed equipment (whether installed or not)
Cold tire inflation
pressuretire inflation pressure when the vehicle has been parked for at least 3 \
hours or
more, or it has not been driven more than 1.5 km or 1 mile under that co\
ndition
Curb weightthe weight of a motor vehicle with standard equipment including the maxi\
mum
capacity of fuel, oil, and coolant, and, if so equipped, air conditionin\
g and
additional weight optional engine
Intended outboard
sidewall(a) the sidewall that contains a whitewall, bears white lettering or bearsmanufacturer, brand, and/or model name molding that is higher or deeper
than the same molding on the other sidewall of the tire, or
(b) the outward facing sidewall of an asymmetrical tire that has a particula\
r side that must always face outward when mounted on a vehicle
Maximum inflation
pressurethe maximum cold inflation pressure to which a tire may be inflated and \
it is
shown on the sidewall of the tire
Maximum loaded
vehicle weightthe sum of Ð
(a) curb weight;
(b) accessory weight;
(c) vehicle capacity weight; and
(d) production options weight
Normal occupant
weight68 kg (150 lb.) times the number of occupants specified in the second \
column of
Table 1 that follows

GAS STATION INFORMATION

Fuel selection:
Select Octane Rating 87 (Research Octane Number 91) or
higher. For improved vehicle performance, the use of
premium unleaded gasoline with an Octane Rating of 91
(Research Octane Number 96) or higher is recommended.

Fuel tank capacity:
87 L (23 gal., 19.1 lmp. gal.)

Engine oil:
Toyota Genuine Motor Oilº or equivalent
Oil grade: API grade SL Energy- Conservingº or ILSAC multigrade engine oil.
Recommended oil viscosity: SAE 5W-30
Oil capacity:
Drain and refill with filter 6.2 L (6.5 qt., 5.5 lmp. qt.)
without filter 5.7 L (6.0 qt., 5.0 lmp. qt.)
See page 542 for detailed information.

Engine coolant:
Capacity: 12.9 L (13.6 qt., 11.4 lmp. qt.)
Coolant type Ð Toyota Super Long Life Coolantº or similar
high quality ethylene glycol based non-silicate, non-amine,
non- nitrite, and non- borate coolant with long- life hybrid
organic acid technology (Coolant with long- life hybrid
organic acid technology is a combination of low phosphates and organic acids.)
Do not use plain water alone.
For checking the engine coolant, see page 547.

Automatic transmission:
Fluid type Ð Toyota Genuine ATF WSº
See page 553 for detailed information.

Tire information:
See pages 559 through 582 for detailed information.

Tire inflation pressure:
Tire size: P265/65R17 110S
Tire inflation pressure: 220kPa (2.2 kgf/cm
2 or bar, 32 psi)