2008 LEXUS RX400H sump

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1-1. Hybrid system
RX400h_U■
Hybrid battery air vent
There is an air intake vent under
the rear seats to cooling the hybrid
battery (traction battery). If the
vent becomes blocked, the hybrid
battery may overheat, leading to a
reduction in hybrid battery output.
Emergency shut off system
The emergency shut off system blocks off the high voltage current and
stops the fuel pump to minimize the r isk of electrocution and fuel leakage
when a certain level of impact is detected by the impact sensor. If the
emergency shut off system activates, your vehicle will not restart. To
restart the hybrid system, contact your Lexus dealer.
Energy monitor/consumption screen
You can view the status of your hybr id system on the multi-information
display ( →P. 143) and the navigation system screen. The following
images are examples only, and may vary slightly from actual conditions.
■ Energy monitor
● How to display on the navigation system screen:
Press INFO.
Touch on the Information screen.
If the Consumption screen is displayed, touch .
● How to display on the multi-information display:
Push the button several times to select the energy moni-
tor display.
STEP1
STEP2
STEP1

30
1-1. Hybrid system
RX400h_U■
Consumption
Press .
Touch on the Information screen.
If the “Energy Monitor” screen is displayed, touch .
Regenerated energy in the past
30 minutes
One symbol indicates 50 Wh. Up
to 4 symbols are shown.
Fuel consumption in the past 30
minutes
Average fuel consumption
Outside temperature
Instantaneous fuel consumption
Cruising range
Hybrid warning message
A message is automatically displayed when a malfunction occurs in the
hybrid system or an improper operation is attempted. If a warning message is shown on
the multi-information display and
the navigation system screen (if
equipped), read the message and
follow the instructions. (→P. 398)
STEP1
STEP2
■Resetting the consumption data
Touching will reset the average fuel consumption.

144
2-2. Instrument cluster
RX400h_U
Trip information■ Outside temperature
■ Average fuel consumption after refueling
■ Current fuel consumption
Displays the outside air temperature.
The temperature range that can be displayed is
from -22°F (-30°C) to 122°F (50°C).
Displays the average fuel consumption since the
vehicle was last refueled.
Displays the current rate of fuel consumption. Display items can be switched
by pushing the DISP. switch.

146
2-2. Instrument cluster
RX400h_U
Trip information display (without navigation system)
Display and operation
Display items can be switched by
pushing the INFO switch.
The trip information display presents the driver with a variety of driving-
related data.
Trip information display
• Driving time
• Average fuel consumption
• Current fuel consumption
• Driving distance

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2-2. Instrument cluster
2
When driving
RX400h_U■
Driving time
■ Average fuel consumption
■ Current fuel consumption
■ Driving distance Displays the elapsed time after the hybrid system
starts.
When the hybrid system is started, driving time is
counted from 0:00. Up to 11:59 (11 hours, 59 minutes)
can be displayed.
Displays the average fuel consumption since the
vehicle was last refueled.
Displays the current rate of fuel consumption.
Displays the driving distance since the hybrid system
was started.
The function can be reset by pushing the INFO switch
for longer than one second when the driving distance is
displayed.
CAUTION
■Caution while driving
Do not adjust the display while driving.
Doing so may cause the driver to mishandle the vehicle and an accident, resulting in
death or serious injury.

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2-5. Driving information
2
When driving
RX400h_U
Trailer towing (if equipped)
Your vehicle is designed primarily as a passenger-and-load carrying vehi-
cle. Towing a trailer will have an adverse effect on handling, performance,
braking, durability, and fuel consumption. For your safety and the safety of
others, do not overload the vehicle or trailer.
Lexus warranties do not apply to damage or malfunction caused by towing
a trailer for commercial purposes.
■ Weight limits
Confirm that the total trailer weight, gross vehicle weight, gross axle
weight and trailer tongue load are all within the limits.
■ Gross vehicle weight
The gross vehicle weight must not exceed the Gross Vehicle Weight
Rating (GVWR) indicated on the Certification Label. The gross
vehicle weight is the sum weight of the unloaded vehicle, driver, pas-
sengers, luggage, hitch and trailer tongue load. Also included is the
weight of any special equipment installed on your vehicle.
■ Gross axle weight
The load on either the front or rear axle resulting from distribution of
the gross vehicle weight on both axles must not exceed the Gross
Axle Weight Rating (GAWR) listed on the Certification Label.
Certification Label

279
3-6. Other interior features
3
Interior features
RX400h_U
NOTICE
■To prevent the 12-volt battery from being discharged
Do not use the power outlet longer than necessary when the hybrid system is off.
■Appliances that may not operate properly (115 VAC)
The following 115 VAC appliances may not operate properly even if their power
consumption is under 100 W.
●Appliances with high initial peak wattage
●Measuring devices that process precise data
●Other appliances that require an extremely stable power supply

321
4-3. Do-it-yourself maintenance
4
Maintenance and care
RX400h_U
■Engine oil consumption
●The amount of engine oil consumed depends on the oil viscosity, the quality of the
oil and the way the vehicle is driven.
●More oil is consumed under driving conditions such as high speeds and frequent
acceleration and deceleration.
●A new engine consumes more oil.
●When judging the amount of oil consumption, keep in mind that the oil may have
become diluted, making it difficult to judge the true level accurately.
●Oil consumption: Max. 1.1 qt./600 miles, 0.9 lmp.qt./600 miles (1.0 L per 1000
km)
●If you consume more than 1.1 qt. (1.0 L, 0.9 lmp.qt.) every 600 miles (1000 km),
contact your Lexus dealer.
■After changing the engi ne oil (U.S.A. only)
The oil change system should be reset. Perform the following procedures: Switch the display to the odometer. ( →P. 1 4 3 )
Turn the engine switch to the LOCK position.
STEP1
STEP2
While pressing the ODO/TRIP button, turn
the engine switch to the ON position. A mes-
sage MAINT REQD RESET MODE will
appear on the display. To select the system,
hold the button for at least 5 seconds. A mes-
sage COMPLETE will appear and a beep will
sound.STEP3