GIC188 TRW Warning Contact, brake pad wear

This TRW GIC188 Warning Contact, brake pad wear sensor serves as an essential safety feature in modern vehicles' braking systems. Its primary function is to detect brake pad wear and trigger a warning signal to inform the driver of impending replacement needs. Brake discs, or rotors, are metallic circular components integral to a vehicle’s braking system, mounted on the wheel hubs. They function as a friction surface for brake pads, converting kinetic energy into thermal energy via clamping force to decelerate or stop wheel rotation. Discs are typically constructed from gray cast iron, though carbon ceramic and composite materials are also utilized for performance applications. Key characteristics include diameter, thickness, venting style (solid, vented, drilled/slotted), and rotor hat offset. Variation exists between solid, vented, and cross-drilled/slotted designs, impacting heat dissipation and performance characteristics.