Scion was established in 2003 by Toyota as a distinct, separately branded division specifically targeting younger buyers seeking style, value, personality, and individuality in their vehicles and transportation choices. Headquartered in Torrance, California, Scion emphasized affordability, extensive customization options, personalization, and engaging driving dynamics throughout its operational period. The brand ceased operations in 2016, with remaining Scion models transitioning back to Toyota branding and badging.

Scion was recognized for fun, unconventional vehicle designs and innovative models that encouraged extensive personalization and individual expression by owners and enthusiasts. Notable models include the distinctive xB hatchback, sporty tC coupe, compact xA city car, micro-size iQ, and the engaging FR-S sports coupe. Each Scion represented the brand's philosophy of accessible enthusiasm and distinctive styling, offering practical features wrapped in youthful, contemporary design.

Scion service manuals provide detailed technical documentation including engine and transmission specifications and procedures, electrical system diagrams and comprehensive wiring information, fuel system and engine management details, air conditioning and climate control systems documentation, brake and suspension technical data and specifications, and comprehensive diagnostic procedures for all onboard computer systems and components.

Scion owners and independent repair specialists rely on factory service manuals to maintain these distinctive vehicles properly and correctly. DIY vehicle enthusiasts and professional automotive technicians use authentic Scion documentation to accurately diagnose issues, perform repairs correctly, and keep their vehicles operating reliably and safely.