Replace the battery with a new one if it is depleted.
You will need the following items:
Vehicles without a smart key system: CR1620
Vehicles with a smart key system: CR2032
Replacing the battery
Vehicles without a smart key system
1. Remove the cover.
To prevent damage to the key, cover the tip of the screwdriver with a rag.
2. Remove the battery cover.
3. Remove the depleted battery using a small flathead screwdriver.
Insert a new battery with the "+" terminal facing up.
4. When installing, reverse the steps listed.
Vehicles with a smart key system
1. Release the lock and take out the mechanical key.
2. Remove the cover.
Use an appropriate sized flathead screwdriver. Forceful prying may deform the cover.
To prevent damage to the key, cover the tip of the screwdriver with a rag.
3. Remove the depleted battery.
When removing the cover, if the battery cannot be seen due to the electronic key module attaching to the upper cover, remove the electronic key module from the cover so that the battery is visible as shown in the illustration.
Use an appropriate sized flathead screwdriver when removing the battery.
Insert a new battery with the "+" terminal facing up.
4. When installing, reverse the steps listed.
■Use a CR1620 (vehicles without a smart key system) or CR2032 (vehicles with a smart key system) lithium battery
■If the key battery is depleted The following symptoms may occur:
■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.
■For normal operation after replacing the battery Observe the following precautions to prevent accidents:
Moisture may cause the battery to rust.
Toyota CH-R Service Manual > Smart Key System(for Start Function): Operation Check
OPERATION CHECK
NOTICE:
Make sure that the smart key system (for Start Function) has not been canceled
before performing this inspection.
Click here
OPERATION DESCRIPTION
(a) Push-button start function:
(1) When the electrical key transmitter sub-assembly is in a vehicle interior
detecti ...
Toyota CH-R Service Manual > Seat Belt Warning System(w/o Occupant Classification System): Driver Side Seat Belt Warning Light does not Operate
DESCRIPTION
The combination meter assembly blinks or turns off the seat belt warning light
on the combination meter assembly in accordance with the state of the front seat
inner belt assembly (driver seat).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
The seat belt warning syste ...