2008 LEXUS RX400H maintenance

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4-3. Do-it-yourself maintenance
RX400h_U
Air conditioning filter
The air conditioning filter must be changed regularly to maintain air condi-
tioning efficiency.
Turn the engine switch to the LOCK position.
Open the glove box.
Remove the 2 pins installed on
the upper part of the glove box
and lower the glove box.
Remove the filter case.
Remove the air conditioning fil-
ter from the filter case and
replace it with a new one.
The ↑UP marks shown on the
filter and the filter case should
be pointing up.
STEP1
STEP2
STEP3
STEP4

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4-3. Do-it-yourself maintenance
4
Maintenance and care
RX400h_U
■Changing interval
Inspect and replace the air conditioning filter according to the maintenance sched-
ule. In dusty areas or areas with heavy traffic flow, early replacement may be
required. (For scheduled maintenance information, please refer to the “Warranty
and Service Guide”, “Owner's Manual Supplement” or “Scheduled Maintenance”.)
■If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
NOTICE
■When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the system.

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4-3. Do-it-yourself maintenance
RX400h_U
Wireless remote control battery
Replace the battery with a new one if it is discharged.
■You will need th e following items:
● Small Phillips-head screwdriver
● Lithium battery (CR2016)
■ Replacing the battery
Remove the screw and cover.
Push the cover in the arrow
direction.
Remove the module.
Open the case cover and
remove the depleted battery.
Insert a new battery with the +
terminal facing up.
STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
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Maintenance and care
RX400h_U
■If the battery is discharged
The following symptoms may occur.
●The wireless remote control will not function properly.
●The operational range is reduced.
■Use a CR2016 lithium battery
●Batteries can be purchased at your Lexus dealer, jewelers, or camera stores.
●Replace only with the same or equivalent type recommended by a Lexus dealer.
●Dispose of used batteries according to the local laws.
CAUTION
■Removed battery and other parts
Keep away from children.
These parts are small and if swallowed by a child they can cause choking.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents.
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other components inside the remote control.
●Do not bend either of the battery terminals.

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4-3. Do-it-yourself maintenance
RX400h_U
Rear seat entertainment system controller
■If the batteries are discharged
The following symptoms may occur.
●The rear seat entertainment system control will not function properly.
●The operational range is reduced.
■When using 3 AA batteries
●Batteries can be purchased at your Lexus dealer, electric appliance shop, or
camera stores.
●Replace only with the same or equivalent type recommended by a Lexus dealer.
●Dispose of used batteries according to the local laws.
Replace the batteries with new them if they are discharged.
■Necessary item for replacing:
3 AA batteries
■ Replacing the batteries
Remove the cover.
Remove the depleted batteries
and install the new them.
STEP1
STEP2

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4-3. Do-it-yourself maintenance
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Maintenance and care
RX400h_U
CAUTION
■Removed battery and other parts
Keep away from children.
These parts are small and if swallowed by a child they can cause choking.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents.
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other components inside the remote control.
●Do not bend either of the battery terminals.

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4-3. Do-it-yourself maintenance
RX400h_U
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown.
If this happens, check and replace the fuses as necessary.
Turn the engine switch to the LOCK position.
Remove the engine compartment cover. ( →P. 317)
Open the fuse box cover.
Engine compartment
Push the tabs in and lift the lid
off.STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
4
Maintenance and care
RX400h_U
Driver's side instrument panelRemove the lid.
After a system failure, see “Fuse layout and amperage ratings”
(→ P. 355) for details about which fuse to check.
Remove the fuse with the pull-
out tool.
STEP4
STEP5