Electronic key battery
Replace the battery with a new one if it is discharged.
You will need the following items:
Flathead screwdriver.
Small Phillips-head screwdriver.
Lithium battery (CR1632).
Replacing the battery

Take out the mechanical key.

Remove the cover.

Remove the depleted battery.
Insert a new battery with the “+” terminal facing up.
Use a CR1632 lithium battery
l Batteries can be purchased at your Lexus dealer, local electrical appliance shops or camera stores.
Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used batteries according to the local laws.
If the electronic key battery is discharged
The following symptoms may occur:
The smart access system with push-button start and wireless remote control
will
not function properly.
The operational range is reduced.
When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus
dealer
can replace the battery for you.
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.
See also:
2010 Lexus GX 460 review
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If your vehicle overheats
The following may indicate that your vehicle is overheating:
l “ENGINE OVERHEAT” is shown on the multi-information display:
The engine may be overheating.
“HYBRID SYSTEM OVERHEAT” is shown on the m ...
Engine (ignition) switch
Performing the following operations when carrying the electronic key on
your person starts the engine or changes “ENGINE START STOP” switch
modes.
Starting the engine
1. Check that the parking bra ...
