Toyota Highlander (2018 year). Manual - part 134

548

7-3. Do-it-yourself maintenance

Remove the filter cover.

Remove the air conditioning fil-
ter and replace it with a new
one.

The “

↑UP” marks shown on the fil-

ter should be pointing up.

■

Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to the
“Schedule maintenance guide” or “Owner’s Manual Supplement”.)

■

If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.

■

Air conditioning filter with deodorizing function
The use of air fresheners may significantly reduce the life span of the deodor-
izing effect.

When an air conditioning odor comes out continuously, replace the air condi-
tioning filter.

5

6

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.

549

7-3. Do-it-yourself maintenance

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Mainten

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● Flathead screwdriver
● Small flathead screwdriver
● Lithium battery CR2016 (vehicles without a smart key system), or

CR2032 (vehicles with a smart key system)



Vehicles without a smart key system

Remove the cover.

To prevent damage to the key,
cover the tip of the flathead screw-
driver with a rag.

To prevent the buttons from being
disassembled, face the button sur-
face downward.

Remove the module.

Wireless remote control/electronic key 

battery

Replace the battery with a new one if it is depleted.

You will need the following items:

Replacing the battery

1

2

550

7-3. Do-it-yourself maintenance

Open the case cover using a
coin protected with tape etc.
and remove the depleted bat-
tery using a small flathead
screwdriver.

Insert a new battery with the “+”
terminal facing up.



Vehicles with a smart key system

Take out the mechanical key.

Remove the cover.

To prevent damage to the key,
cover the tip of the flathead screw-
driver with a rag.

Remove the depleted battery.

Insert a new battery with the “+”
terminal facing up.

3

1

2

3

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7-3. Do-it-yourself maintenance

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Mainten

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■

Use a CR2016 (vehicles without a smart key system) or CR2032 (vehicles
with a smart key system) lithium battery

●

Batteries can be purchased at your Toyota dealer, local electrical appliance
shops or camera stores.

●

Replace only with the same or equivalent type recommended by the manu-
facturer.

●

Dispose of used batteries according to local laws.

■

If the key battery is depleted 
The following symptoms may occur:

●

The smart key system (if equipped) and wireless remote control will not
function properly.

●

The operational range will be reduced.

WARNING

■

Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.

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 component inside the remote control.

●

Do not bend either of the battery terminals.