Lexus GS 450h (GWS191) description of the catalogue:

Repair Manual, Electrical Wiring diagrams, Body Repair, Color Wiring Diagrams on Lexus GS 450h, 02/2006-->08/2008, GWS191 series.

LEXUS GS 450H REPAIR MANUALS (RM)
Repair manuals are primarily for use by workshop technicians. They explain procedures for disassembly, inspection, adjustment and assembly of vehicles and parts. The manual types are divided into Engine R/M, Chassis & Body R/M, Automatic Transmission (Transaxle) .

LEXUS ELECTRICAL WIRING DIAGRAM (EWD)
These manuals are used in the inspection and repair of electrical circuits. The separate wiring manual for each model contains circuit diagrams of each electrical system, wiring route diagrams and diagrams showing the location of relays, etc.

LEXUS COLLISION DAMAGED BODY REPAIR MANUALS (BRM)
These manuals contain information on body construction, basic dimensions and repair procedures required for body repair of collision damaged vehicles.

LEXUS SERVICE DATA SHEETS (SDS)
The specifications frequently used in vehicle inspection and repair are provided on one sheet for each model.

LEXUS ACCESSORY INSTALLATION MANUALS (AIM)
These manuals will give you precise directions and information to install the Toyota/Lexus Genuine Accessories.

LEXUS TECHNICAL SERVICE BULLETINS(TSB)