Below is a list of light bulb types used in 2018- TOYOTA RAV 4 lighting system, covering SUV vehicles.
Fog light bulb: H16
Front indicator/turn signal bulb: WY21W
Periphery light bulb: W5W
Rear indicator/turn signal bulb: WY21W
Back-up light bulb: W16W
Boot light bulb: W5W
Light bulb sizes for other TOYOTA RAV 4 generations: RAV 4 (XA40)