Description
Glow Relay CARTIER CITROËN PEUGEOT With a piece of wiring for each pin.
High-quality glow relay manufactured by Cartier for Citroën and Peugeot applications. This relay comes with a short harness piece that matches each pin, making replacement straightforward and reducing the need for extra wiring modifications. Ideal for mechanics and DIY enthusiasts working on diesel pre-heating systems, this unit is frequently searched by its OEM numbers 9640469680 and 598140. Reliable switching of the glow-plug circuit ensures proper cold-start performance and reduces white smoke and extended cranking times.
Technical Information
- Manufacturer: Cartier
- Model: Citroën C2, Citroën C3, Citroën C3 II, Citroën C3 Pluriel, Citroën C5, Citroën C5 (X7), DS3
- Product Codes: 9640469680, 598140
- Additional Numbers: Stellantis Group Reference / OE Applications
Function And Benefits
The glow relay controls the high current feed to the glow plugs during pre-heating and start-up. By switching the heavy current away from the dashboard circuit, it protects the vehicle wiring and ensures the correct pre-heat timing set by the engine control unit. Supplied with a dedicated wiring piece for each pin, this relay simplifies installation and restores proper contact integrity in the glow-plug circuit.
Installation Recommendations
- Always disconnect the battery before starting work and follow manufacturer procedures to avoid electrical damage.
- Locate the relay—usually installed in the engine bay fuse/relay box or in a dedicated mounting bracket near the glow-plug circuit (consult vehicle wiring diagrams for exact location).
- Inspect connectors and mating surfaces for corrosion or melted insulation; replace or clean as required.
- Fit the relay with the included wiring piece, ensuring each pin matches its original position. Secure connections to prevent vibration-induced loosening.
- After installation, verify related fuses and measure glow-plug circuit continuity. Perform a functional test: confirm glow-plug indicator behavior, pre-heat duration and engine start performance.
- Use proper tools and, if available, a multimeter to check coil resistance and contact switching under load before installation.
Reason Why This Part Most Commonly Fails
- High Current Load: Repeated high-current switching causes contact wear and pitting, leading to poor conductivity.
- Corrosion and Moisture: Exposure to moisture, road salts or engine bay contaminants corrodes terminals and connectors.
- Heat and Vibration: Thermal cycling and engine vibration degrade internal contacts and solder joints over time.
- Damaged Wiring: Chafed or damaged harness wires can cause short circuits or intermittent operation.
- Aging: As with all electromechanical relays, materials fatigue and insulation properties decline, reducing reliability.
This glow relay with harness is a direct-fit replacement solution for affected Citroën and Peugeot diesel models and is a commonly referenced part by its OEM codes 9640469680 and 598140. Proper installation restores dependable pre-heating and improves cold-start behaviour.
