Description
NAGARES glow relay for CITROEN and PEUGEOT cars
Used part with functionality guarantee
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
- Turn off the ignition and secure the vehicle against movement.
- Disconnect the battery (minimize the risk of a short circuit when working with the connectors).
- Get access to the relay (depending on the design, it may be necessary to dismantle the nearby cover/holder).
- Before disconnecting, make a note/take a picture of the wiring route and the position of the connectors to avoid confusion.
- Disconnect the connectors carefully – do not pull on the cables, but on the body of the connector.
- Unfasten the relay and remove the old piece.
- Clean the connectors and contact surfaces from dirt and possible oxidation.
- Install the Nagares glow relay in the holder/in its original place and secure it properly.
- Reattach the connectors – check they are fully engaged and secure without play.
- Check the cable routing for tension, chafing and looseness.
- Connect the battery.
- Perform the first function check by turning on the ignition and observing the glow behavior (depending on the car’s equipment).
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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.
