Lexus GX 460 2020 Owner's Manual page 528

Check if the fuse is blown.
4
Normal fuse
1
Blown fuse
2
Type A:
Replace the blown fuse with a new fuse of an appropriate amperage rating. The
amperage rating can be found on the fuse box lid.
Type B, C and D:
Contact your Lexus dealer.
Type A

Type C

GX460_OM_OM60R28E_(GE)
6-3. Do-it-yourself maintenance
Type B

Type D

527
6