Description
Cartier Glow Relay For Citroën Peugeot With A Piece Of Wiring To Each Pin
High-quality Cartier glow relay designed for PSA diesel engines, supplied with a piece of wiring to each pin for easy replacement. This relay (part numbers 9640469680 / 598140) controls power to the glow-plug circuit and ensures reliable pre-heating of the combustion chambers for cold starts. Ideal for professional garages and DIY mechanics working on Citroën and Peugeot models seeking an exact-fit replacement. Commonly searched by product code 9640469680 and 598140.
Technical Information
- Manufacturer: Cartier
- Model: Compatible With Select Citroën And Peugeot Diesel Models
- Product Codes: 9640469680, 598140
- Additional Numbers: Supplied Wiring Leads To Each Pin (for easier connection)
- Applicable Vehicles: Citroën C2, Citroën C3, Citroën C3 II, Citroën C3 Pluriel, Citroën C5, Citroën C5 X7, DS3
Function And Symptoms
The glow relay switches power to the glow plugs according to the engine control unit’s timing, enabling rapid and reliable cold starts on diesel engines. If the relay fails, typical symptoms include prolonged cranking, hard starting when cold, glow-plug warning light illumination, increased white/grey smoke on start, or engine misfires until the engine warms up.
Replacement Procedure
Before starting any work, always disconnect the battery to avoid short circuits and protect vehicle electronics. The relay is typically located in the engine bay relay/fuse box or in a separate relay cluster near the battery or firewall depending on model. Basic replacement steps:
- Disconnect negative battery terminal and wait a few minutes.
- Locate the glow relay in the engine bay fuse/relay box or relay cluster.
- Unplug the multi-pin connector and any attached wiring harness. Note the orientation and routing of supplied wiring leads.
- Remove mounting screws or clips and extract the relay.
- Install the replacement relay, reconnect wiring leads to the correct pins, secure mounting, and reconnect the connector.
- Reconnect the battery, start the engine and verify glow-plug indicator and starting behavior. Check for any fault codes with a diagnostic tool if symptoms persist.
Installation Recommendations
- Always Disconnect The Battery Before Removal To Prevent Damage To Electronics.
- Compare Part Numbers (9640469680 / 598140) And Connector Layout Before Installation.
- Inspect Wiring And Fuse Related To The Glow System; Replace Corroded Connectors Or Damaged Fuses.
- Use A Multimeter To Verify Relay Coil Continuity And Contact Switching If Troubleshooting.
- If Multiple Failures Occur, Check Glow Plugs And Wiring For Short Circuit Or Excessive Current Draw That Could Damage The Relay.
Why This Part Fails Most Often
- Thermal Cycling And High Operating Temperatures Leading To Contact Wear Or Internal Component Failure.
- Corrosion Or Oxidation On Pins And Connectors Causing Poor Electrical Contact.
- Water Ingress Or Moisture In Relay Housing Or Relay Box.
- Overcurrent Due To Failing Glow Plugs Or Short Circuits That Stress Relay Contacts.
- Vibration And Mechanical Stress Causing Broken Solder Joints Or Internal Fatigue.
Replacing the glow relay with a correct-code unit (9640469680 / 598140) and ensuring clean, secure connections restores reliable glow plug operation and improves cold-start performance on compatible Citroën and Peugeot diesel models.
