Description
Cartier Glow Relay For Citroën And Peugeot With Wiring To Each Pin
This Cartier glow relay with pre-attached wiring harness is a direct-fit electrical component for many Citroën and Peugeot diesel models. Designed to control the current flow to the glow plugs, it helps ensure reliable pre-heating of the combustion chambers for faster cold starts and smoother idling after start-up. The unit is often searched for by part numbers 9640469680 and 598140 (Stellantis applications), making it an easy find for both professional mechanics and DIY enthusiasts.
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
- Other Numbers: Stellantis References Associated With Above Codes
Key Features And Function
The relay switches high current to the glow plugs under command from the engine control unit or dedicated timer. Correct relay operation is essential for quick pre-heating during cold starts, reducing white smoke at start-up and improving combustion stability. The supplied wiring to each pin simplifies connection and reduces the need to reuse old, potentially damaged harnesses.
Installation Recommendations
- Safety First: Disconnect the negative battery terminal before starting work to avoid short circuits.
- Locate The Relay: On the listed models the glow relay is typically mounted in the engine bay relay/fuse box or, on some variants, inside the passenger compartment fuse panel. Refer to vehicle wiring diagrams if unsure.
- Use The Supplied Harness: The included leads for each pin make the swap largely plug-and-play. Ensure correct pin alignment and secure connectors fully.
- Protect Connections: Apply a small amount of dielectric grease to pins to reduce corrosion and improve conductivity, and secure wiring away from hot or moving components.
- Verify Operation: After installation, reconnect the battery and check the glow-plug indicator on the dash and engine start behavior. Check relevant fuses and ground connections if symptoms persist.
Why The Part Most Commonly Fails
- Heat And Vibration: Repeated thermal cycling and vibration through years of service degrade internal contacts.
- Corrosion And Moisture: Oxidation of pins and connectors leads to poor conductivity or intermittent operation.
- Electrical Overload: Faulty glow plugs or wiring faults can cause excessive current demand, shortening relay life.
- Poor Ground Or Loose Connections: High-resistance joints increase heat and accelerate relay failure.
For mechanics and competent DIYers this Cartier relay offers a straightforward replacement with the advantage of an attached wiring harness for a reliable electrical connection. Searching by the OE numbers 9640469680 and 598140 will help locate the correct unit for the above Citroën and Peugeot models.
