Toyota 4Runner 2020, Owner'S Manual

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3-2. Opening, closing and locking the doors
4RUNNER (U)
■ Conditions affecting operation
The smart key system uses weak radio waves. In the following situations, the
communication between the electronic key and the vehicle may be affected,
preventing the smart key system, wireless remote control and engine immobi-
lizer system from operating properly. (Ways of coping:

P. 507)
● When the electronic key battery is depleted
● Near a TV tower, electric power plant, gas station, radio station, large dis-
play, airport or other facility that generates strong radio waves or electrical
noise
● When carrying a portable radio, cellular phone, cordless phone or other
wireless communication device
●
When the electronic key is in contact with, or is covered by the following
metallic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●
When multiple electronic keys are in the vicinity
●
When other wireless keys (that emit radio waves) are being used nearby
●
When carrying the electronic key together with the following devices that
emit radio waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
●
If window tint with a metallic content or metallic objects are attached to the
back window
● When the electronic key is placed near a battery charger or electronic
devices
●
When the vehicle is parked in a pay parking spot where radio waves are
emitted.
If the doors cannot be locked/unlocked using the smart key system, lock/
unlock the doors by performing any of the following:
●
Bring the electronic key close to either front door handle and operate the
entry function.
● Operate the wireless remote control.
If the doors cannot be locked/unlocked using the above methods, use the
mechanical key. (

P. 507)
If the engine cannot be started using the smart key system, refer to P. 508.