Lexus GS450h Owner's Manual page 465

Check if the fuse is blown.
5
Normal fuse
1
Blown fuse
2
Type A and B:
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 C and D:
Contact your Lexus dealer.
Type A

Type C

GS450h_OM_OM30E26U_(U)
6-3. Do-it-yourself maintenance
Type B

Type D

465
6