Vemo V45-73-0003 Brake Light Switch

Vemo V45-73-0003 Brake Light Switch

The Vemo V45-73-0003 Brake Light Switch is a precision-engineered component designed to provide reliable and responsive activation of vehicle brake lights. This switch operates by detecting the position of the driver’s foot on the brake pedal, thereby ensuring that the rear illumination system engages instantly when braking pressure is applied.

Key Functional Characteristics

The switch incorporates a mechanical contact assembly that closes as soon as the pedal reaches its operational threshold. This mechanical action guarantees minimal latency, which is critical for safe driving conditions. The device also features an integrated spring-loaded return mechanism, allowing the contacts to open automatically when the brake pedal is released.

Construction and Materials

The housing of the V45-73-0003 is constructed from high-strength, impact-resistant plastic that protects internal components from vibration, temperature extremes, and moisture. The contact pins are made from gold-plated copper, providing excellent conductivity while resisting corrosion over prolonged use.

Electrical Specifications

• Operating Voltage: 12 V DC (typical automotive battery voltage)
• Maximum Current Rating: 5 A
• Contact Resistance: ≤0.02 Ω when closed
• Operating Temperature Range: –40 °C to +85 °C
• Ambient Humidity: up to 95% non-condensing

Installation Parameters

The V45-73-0003 is designed for straightforward integration into existing brake light circuits. It typically mounts directly onto the brake pedal assembly or a dedicated bracket, with a short cable length (≤0.5 m) connecting to the vehicle’s lighting control module. The switch’s compact footprint allows it to fit within tight engine bay spaces without requiring extensive modifications.

Compatibility Overview

This brake light switch is engineered to be compatible with a wide range of passenger and commercial vehicles that employ standard 12 V electrical systems. It is commonly found in models such as the OPEL Zafira A, Astra G Coupe, Vectra B CC, and other OEM platforms that use Vemo’s original components.

Operational Reliability

The mechanical design of the V45-73-0003 ensures a long service life even under frequent operation. The switch has been tested to withstand over 100,000 pedal actuations without degradation in performance. Its robust construction also resists common automotive stresses such as vibration, shock, and thermal cycling.

Maintenance Considerations

Routine inspection of the contact pins for signs of wear or corrosion is recommended during regular vehicle maintenance. If any discoloration or pitting is observed, replacing the switch will restore optimal performance. The device does not require lubrication or electrical cleaning under normal operating conditions.

Safety and Compliance

The V45-73-0003 meets automotive safety standards for brake light activation systems. Its reliable operation contributes to overall vehicle safety by ensuring that rear occupants are promptly illuminated during braking events, thereby reducing the risk of collisions.

Technical Support and Documentation

For detailed wiring diagrams, installation guides, or troubleshooting assistance, consult the manufacturer’s technical resources. The V45-73-0003 is supported by a comprehensive set of schematics that illustrate typical integration points within vehicle electrical architectures.

Conclusion

The Vemo V45-73-0003 Brake Light Switch exemplifies high-quality automotive component design, combining durable construction with precise mechanical operation. Its compatibility with a broad spectrum of vehicles and its proven reliability make it an essential element for maintaining safe braking illumination in modern automobiles.