Vemo V15-71-0014 Relay, fuel pump

Vemo V15‑71‑0014 Fuel Pump Relay – Overview

The Vemo V15‑71‑0014 is a high‑performance fuel pump relay designed for use in a wide range of Volkswagen Group vehicles, including Audi, VW, Seat and Skoda models. This component plays a critical role in the fuel delivery system by controlling the electrical power supplied to the fuel pump.

Key Functional Characteristics

• Voltage Rating: 12 V DC – compatible with standard automotive battery systems.
• Current Capacity: Up to 30 A – sufficient for most factory‑equipped fuel pumps.
• Switching Type: Normally open (NO) – the relay closes when activated, allowing current to flow to the pump.
• Control Voltage: 12 V – the coil is energized by the vehicle’s ignition or fuel system control module.
• Operating Temperature Range: -40 °C to +125 °C – ensuring reliable performance in extreme climates.

Design and Construction

The relay features a robust metal housing that protects the internal contacts from vibration, heat, and corrosion. The coil is wound with high‑quality enamelled wire, providing consistent operation over thousands of cycles. A sealed contact arrangement prevents fuel vapour ingress, maintaining electrical integrity.

Compatibility Matrix

The V15‑71‑0014 has been engineered to fit a broad spectrum of models across the Volkswagen Group. Below is an illustrative list of vehicles that commonly use this relay:

• Audi 80 B2/B3, Audi 100 C3 Saloon (1986–1988)
• VW Golf I Cabriolet (155), Golf II (19E, 1G1/1G2), Scirocco II (53B)
• Seat and Skoda models that share the same fuel system architecture.
• Volkswagen Caddy, VW Passat variants with similar fuel pump modules.

Installation Guidelines

1. Disconnect the battery: Ensure safety by removing the negative terminal before working on electrical components.
2. Locate the existing relay: It is typically found in the engine bay, near the fuel pump assembly or under the dashboard.
3. Remove the old relay: Unscrew or unclip the mounting bracket and gently pull the relay out of its socket.
4. Insert the V15‑71‑0014: Align the pins with the terminal block, ensuring correct polarity. Secure it with the original mounting hardware.
5. Reconnect the battery: Restore power and verify that the fuel pump activates correctly when the ignition is turned on.

Performance Benefits

• Reliability: The relay’s high‑quality contacts reduce the risk of intermittent failures, which can lead to engine stalling or reduced power.
• Longevity: Designed for extended life cycles, it withstands frequent switching without degradation.
• Safety: By ensuring precise control over fuel pump operation, the relay contributes to overall vehicle safety and emissions compliance.

Maintenance Tips

Although relays are generally maintenance‑free, periodic inspection can catch early signs of wear. Look for:

• Physical damage: Cracks or corrosion on the housing.
• Electrical resistance: A sudden increase may indicate contact failure.
• Heat marks: Excessive heat can signal overcurrent conditions.

Conclusion

The Vemo V15‑71‑0014 fuel pump relay is a dependable, high‑quality component essential for the proper functioning of many Volkswagen Group vehicles. Its robust construction, wide compatibility range, and proven performance make it an ideal choice for both original equipment replacements and aftermarket upgrades.