Lexus RC 350 2019 Owner's Manual page 336

334 6-3. Do-it-yourself maintenance
Replacing the battery
Type A
■
1 Take out the mechanical key.
2 Remove the cover.
To prevent damage to the key, wrap the tip
of the screwdriver with tape.
3 Remove the depleted battery.
Insert a new battery with the "+" terminal
RC350-RC300_OM_General_OM24884E
facing up.
Type B
■
1 Take out the mechanical key.
2 Remove the cover.
To prevent damage to the key, wrap the tip
of the screwdriver with tape.