Part description

The Nagares glow relay (glow relay) is a key electrical component for the proper functioning of the glow system. It ensures the switching of the glow plugs at the necessary moment, which is typically manifested mainly during cold starts. If you are dealing with worse starting, irregular glow or glow plug failures, replacing the relay is often a quick and effective solution.

This is a used car part intended for Citroën/Peugeot cars, also searchable by product numbers 9640469680 and 598140.

Technical information

• Manufacturer: Nagares
• Model: not specified
• Other numbers: not specified

Product codes

• Product codes: 9640469680, 598140

Installation recommendations

Generally/typically changing the glow relay is work on the electrical part of the vehicle and the exact procedure may vary according to the specific model and design. Below is a practical procedure typical for this type of part.

1) Before assembly

• Compare with the old part: same product numbers (9640469680 / 598140), same connectors, number of pins and identical mounting.
• Check the condition of the connectors on the relay and in the harness: they must not be bent, oxidized, burnt or mechanically damaged.
• Visually check the relay for signs of overheating (odor, plastic discoloration, deformation).

2) Necessary tools and materials

• A basic set of hand tools (typically a ratchet/wrenches/screwdrivers depending on the attachment)
• Electrical contact cleaner
• Protective gloves
• Straps (for possibly securing the cabling to its original position)

3) Step-by-step assembly procedure

1. Turn off the ignition and secure the vehicle against movement.
2. Disconnect the battery (minimize the risk of a short circuit when working with the connectors).
3. Get access to the relay (depending on the design, it may be necessary to dismantle the nearby cover/holder).
4. Before disconnecting, make a note/take a picture of the wiring route and the position of the connectors to avoid confusion.
5. Disconnect the connectors carefully – do not pull on the cables, but on the body of the connector.
6. Unfasten the relay and remove the old piece.
7. Clean the connectors and contact surfaces from dirt and possible oxidation.
8. Install the Nagares glow relay in the holder/in its original place and secure it properly.
9. Reattach the connectors – check they are fully engaged and secure without play.
10. Check the cable routing for tension, chafing and looseness.
11. Connect the battery.
12. Perform the first function check by turning on the ignition and observing the glow behavior (depending on the car’s equipment).
• 4) Post-assembly checks and test drive/function verification
  • Verify that there are no power outages and that the connectors are not getting hot.
  • Try a cold start (if possible) and observe the improvement in starting.
  • After a short drive, visually check the relay fixing and wiring condition again.

  5) The most common assembly mistakes + how to avoid them

  • Battery not disconnected → risk of short circuit and damage to electrical installation; always disconnect the battery first.
  • Swapping/incorrectly clicking the connector → manifested by non-functional glow; the connectors must fit as far as they will go.
  • Ignoring contact oxidation → even a functional relay does not work properly; clean the contacts with a cleaner.
  • Poorly routed cabling → can penetrate or pull on the connector; lead her as originally and secure.

  Reasons why the part is damaged

  • Thermal stress and aging of electronics due to operation in the engine compartment.
  • High current load of the glow system (normal wear of the contacts inside the relay).
  • Oxidation and moisture in the connectors, transient resistances and subsequent overheating.
  • Voltage fluctuations or a weak battery that can increase the load on electrical components.
  • Damaged wiring (loose contacts, penetration, unprofessional interventions), which can overload the relay.
  ]]> https://www.usedpartsvendor.com/electro-components/relay/incandescent/nagares-glow-relay-with-wiring-citroen-peugeot-9640469680-598140-2/ Sat, 15 Mar 2025 03:23:20 +0000 https://www.usedpartsvendor.com/uncategorized/nagares-glow-relay-with-wiring-citroen-peugeot-9640469680-598140-2/ The Nagares Glow Plug Relay is designed for Citroën and Peugeot vehicles, providing essential functionality for optimal engine performance. This relay is a used part that comes with a guarantee of functionality and includes a section of wiring for easy installation.

  Glow plug relays play a crucial role in the starting process of diesel engines by controlling the power supplied to the glow plugs, ensuring proper combustion for smoother engine start-up. Over time, relays may fail due to electrical wear and tear or exposure to harsh engine conditions, leading to starting issues or poor engine performance. Replacement is recommended when signs of malfunction appear, such as difficulty starting the engine or warning lights on the dashboard.

  Technical Information

  • Manufacturer: Nagares
  • Model: Glow Plug Relay
  • Product Codes: 9640469680, 598140
  • Additional Numbers: None
  ]]> https://www.usedpartsvendor.com/electro-components/relay/incandescent/glow-relay-cartier-with-wiring-citroen-peugeot-9640469680-598140/ Sat, 15 Mar 2025 03:17:49 +0000 https://www.usedpartsvendor.com/uncategorized/glow-relay-cartier-with-wiring-citroen-peugeot-9640469680-598140/ Glow Plug Relay Cartier Citroën Peugeot. Supplied With A Piece Of Wiring To Each Pin.

  This glow plug relay is a direct-fit style unit designed for many Citroën and Peugeot diesel engines. Supplied with a short wiring harness to reach each pin, it replaces the relay responsible for switching high current to the glow plugs during cold starts. Ideal for professional garages and DIY mechanics, the part is frequently searched by its product numbers and fitment references 9640469680 and 598140.

  Key Benefits

  • Direct replacement for original-style relay assemblies used on selected Citroën and Peugeot models.
  • Comes With Wiring To Each Pin For Easier Installation And Reliable Contact.
  • Robust Design To Handle Repeated Cold Starts And High Inrush Currents To Glow Plugs.

  Compatibility

  Commonly fitted To The Following Models: Citroën C2, Citroën C3, Citroën C3 II, Citroën C3 Pluriel, Citroën C5, Citroën C5 X7, DS3. The relay is used on various Stellantis diesel platforms where the listed part numbers apply.

  How Replacement Is Usually Performed

  Replacing the glow plug relay is a straightforward job for a workshop or competent DIYer with basic electrical skills:

  • Disconnect The Negative Battery Terminal To Prevent Short Circuits.
  • Locate The Relay In The Engine Bay Relay/Fuse Box Or A Dedicated Mounting Near The Battery Or ECU (Refer To Vehicle Repair Manual For Exact Location).
  • Remove Any Covering Panels, Unplug The Electrical Connectors And Unfasten The Relay Mounting Screws Or Clips.
  • Fit The New Relay With Its Supplied Wiring Harness, Ensuring Each Pin Is Properly Seated And Secured.
  • Reconnect The Battery And Perform A Cold-Start Check To Confirm Proper Operation (Glow-Plug Indicator Behavior, Cranking Time And Idle Stability).

  Technical Information

  • Manufacturer: Cartier (for Citroën/Peugeot – Stellantis)
  • Model: Fits Various Citroën And Peugeot Diesel Models (See Compatibility Section)
  • Product Codes: 9640469680, 598140
  • Other Numbers: 598140 | 9640469680

  Installation Recommendations

  • Ensure Battery Is Isolated Before Work To Avoid Short Circuits.
  • Clean Connector Contacts And Check Wiring For Heat Damage Or Corrosion Before Installing The New Relay.
  • Use Correct Torque For Mounting Fasteners And Route The Supplied Wiring Harness Clear Of Hot Or Moving Parts.
  • After Installation, Verify Glow-Plug Circuit Function By Observing The Dashboard Indicator And By Measuring Voltage At The Glow-Plug Terminals If Necessary.

  Most Common Failure Causes

  • High Current Loads And Repeated Heating/Cooling Cycles Causing Contact Pitting Or Welding Inside The Relay.
  • Corrosion Or Water Ingress At Connectors Leading To Intermittent Operation.
  • Damaged Or Overheated Wiring From Poor Connections Or Past Overcurrent Events.
  • Frequent Cold Starts And Short Trips Increasing Duty Cycle Of The Glow-Plug System, Accelerating Wear.

  Typical Symptoms Of A Faulty Relay Include Long Cranking Times On Cold Starts, Glow-Plug Warning Light Remaining Active Or Illumination Patterns Indicating A Fault, And Reduced Cold-Start Performance. Because this relay handles high current, replacing it with a correct, well-seated unit and ensuring good connector condition is essential for reliable diesel cold starts.

  Part Numbers Are Common Search Terms: 9640469680, 598140.

  ]]> https://www.usedpartsvendor.com/electro-components/relay/incandescent/glow-relay-cartier-citroen-peugeot-9663696380-598140-2/ Wed, 15 May 2024 04:07:58 +0000 https://www.usedpartsvendor.com/uncategorized/glow-relay-cartier-citroen-peugeot-9663696380-598140-2/ Product Description

  The Glow Plug Relay Cartier is an essential electrical component designed for Citroën and Peugeot diesel engines. It controls the current supply to the glow plugs, ensuring rapid heating during cold starts for smooth and efficient engine ignition.

  This relay is commonly sought after using product numbers 9663696380 or 598140, confirming its compatibility with multiple PSA models. It is a robust part that is vital to maintain the proper operation of the glow plug system, especially during cold weather conditions where engine preheating is critical.

  The relay operation involves managing high electrical loads to the glow plugs without failure. Over time, relay contacts can wear out due to frequent use and electrical arcing, potentially causing hard starts or delayed ignition. Replacing a faulty glow plug relay generally restores the starting performance and engine smoothness.

  Technical Information

  • Manufacturer: Cartier
  • Model Compatibility: Various Citroën and Peugeot diesel models using product codes 9663696380 and 598140
  • Product Codes: 9663696380, 598140
  • Additional Numbers: PSA specific part references applicable to related diesel engines

  Installation involves locating the relay usually within the engine bay fuse box or relay panel, disconnecting the wiring harness, and swapping the faulty relay with the new unit. Consult the vehicle’s service manual for precise relay position and replacement procedure.

  Regular inspection of the glow plug relay is recommended as part of diesel engine maintenance to avoid starting issues and prolonged cranking. This part is indispensable for professional mechanics and car enthusiasts who perform their own repairs on Citroën and Peugeot vehicles.

  ]]> https://www.usedpartsvendor.com/electro-components/relay/incandescent/glow-relay-cartier-citroen-peugeot-9640469680-598140-2/ Wed, 15 May 2024 04:03:31 +0000 https://www.usedpartsvendor.com/uncategorized/glow-relay-cartier-citroen-peugeot-9640469680-598140-2/ Glow Plug Relay CARTIER. Used part with functional warranty.

  This Cartier glow plug relay is designed for diesel preheating circuits on several Citroën and Peugeot models. It switches and supplies the high current required by glow plugs to shorten cold-start time and improve combustion during engine warm-up. The relay is commonly searched under product codes 9640469680 and 598140 — including these numbers in searches increases the chance of finding the correct replacement quickly.

  Technical Information

  • Manufacturer: Cartier
  • Model: Citroën C4 Picasso, Citroën C5, Citroën C8, Peugeot 307, Peugeot 807
  • Product Codes: 9640469680, 598140
  • Other Numbers: 598140, 9640469680

  Function And Typical Symptoms

  The glow plug relay controls the timing and power supply to the glow plugs, usually under command from the engine control unit. When the relay fails, common symptoms include difficult cold starts, extended cranking, the glow-plug/warning lamp behaving erratically or not lighting, rough idling after cold start and increased white or grey smoke on cold starts.

  How To Replace

  • Disconnect the negative battery terminal before work to avoid short circuits.
  • Locate the relay in the engine bay—typically in the fuse/relay box or mounted near the glow-plug wiring harness.
  • Release electrical connectors and any retaining clips or screws, then remove the old relay.
  • Fit the replacement relay in the same orientation, secure fasteners and reconnect the electrical plugs firmly.
  • Reconnect the battery and perform a function check: turn the ignition to the preheat position and verify the glow-plug lamp and engine start behaviour.
  • If starting problems persist, inspect glow plugs, wiring and related fuses for faults or excessive current draw.

  Installation Recommendations

  • Use basic workshop tools and observe anti-static and anti-short precautions when handling electrical parts.
  • Ensure connector pins are clean and free of corrosion; apply dielectric grease if appropriate to improve contact and prevent future corrosion.
  • Always check associated fuses and the condition of the glow plugs — a failed glow plug can overload the relay and shorten its life.
  • Verify secure mounting and correct orientation to avoid vibration-related failures.

  Most Common Failure Causes

  • Contact Wear And Pitting: Repeated high-current switching causes contacts to wear or stick.
  • Thermal Stress: Continuous heating and cooling cycles lead to internal degradation.
  • Corrosion And Moisture Ingress: Water or road salt can corrode terminals and housing.
  • Overload From Faulty Glow Plugs: Shorted or high-resistance glow plugs increase current draw and accelerate relay failure.
  • Age And High Mileage: Electrical components degrade over time, especially on vehicles with intensive cold-start cycles.

  This used Cartier glow plug relay is a practical replacement for workshop technicians and DIY enthusiasts repairing the preheat system on compatible Citroën and Peugeot diesel models. Always match the product codes (9640469680 / 598140) when selecting the part to ensure correct fitment.

  ]]>