Description
Horn (siren) for Citroën C4 II B7 and DS4. With bracket for body mounting.
High-quality replacement horn designed for Citroën C4 II (B7) and DS4 vehicles. Supplied with the body mounting bracket, this horn is a direct-fit part often searched under the product code 6236P4. Ideal for professional workshops and experienced DIY mechanics who require a reliable audible warning device that restores factory functionality. The compact design and included bracket simplify installation and ensure correct positioning for optimal sound projection.
Function And Application
The horn provides the vehicle’s primary audible warning signal. It operates on standard 12V automotive electrical systems (powered via the vehicle horn relay and protected by a dedicated fuse). When the horn button is pressed, the relay supplies current to the horn diaphragm, producing a loud tone to alert other road users. This unit is intended as a direct replacement for the original horn on Citroën C4 II (B7) and DS4 models and is commonly identified by the OEM code 6236P4.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4 II (B7), DS4
- Product Codes: 6236P4
- Other Numbers: Not Available
Replacement Procedure
Basic steps for replacement (for qualified persons or experienced DIY mechanics):
- Disconnect The Battery: Always disconnect the negative terminal before starting to avoid short circuits and protect vehicle electronics.
- Access The Horn: The horn is typically located behind the front grille or near the radiator support. Remove any trim or grille components as required to gain access.
- Disconnect Electrical Connector: Unplug the horn connector. Inspect the connector for corrosion or damage.
- Remove Mounting Bolt: Unscrew the mounting bolt securing the horn bracket to the body. Keep any original nuts/bolts if reusing.
- Fit New Horn: Mount the replacement horn with the supplied bracket, ensuring a solid metal-to-metal ground through the bracket or a dedicated ground point.
- Reconnect Connector And Battery: Plug in the electrical connector, reconnect the battery, and test horn operation. If the horn does not operate, check the fuse and horn relay before further troubleshooting.
- Final Check: Reinstall any removed trim and verify secure mounting and correct sound direction.
Installation Recommendations
- Use Proper Tools: A socket set and basic trim removal tools are usually sufficient.
- Ensure Good Grounding: Poor ground connection is a common cause of weak or non-functioning horns.
- Inspect Wiring And Connector: Clean or replace corroded connectors and secure any damaged wiring to prevent future failure.
- Test Relay And Fuse: If replacement does not restore function, inspect the horn fuse and relay for faults before removing additional components.
- Follow Safety Procedures: Always disconnect the battery before working on electrical components and follow manufacturer guidelines.
Why This Part Fails Most Often
Common failure causes include:
- Corrosion And Water Ingress: Exposure to moisture and road salt can corrode terminals and diaphragm components, leading to intermittent or no sound.
- Mechanical Wear: Vibration and aging can fatigue the horn diaphragm or mounting bracket, altering sound or causing complete failure.
- Electrical Issues: Blown fuse, faulty horn relay, damaged wiring, or poor ground connections often present as horn failures.
- Connector Damage: Broken or oxidized connectors reduce current flow and impair operation.
Searching For Part Number 6236P4: Many customers locate this horn by the OEM code 6236P4. Use this number when searching to quickly find the correct direct-fit replacement for Citroën C4 II and DS4 applications.
