Description
USB Connection Cable For Citroen C4 B7 Vehicles
This USB harness is a direct-fit electrical cable designed for Citroen and selected Peugeot infotainment systems. It provides a reliable data and power connection between the vehicle’s head unit and USB devices for media playback, charging and software updates. The part is commonly searched by its product codes 9671138380 and 6574SV, so entering these numbers will quickly locate the correct item in parts catalogs.
Key Benefits
Durable replacement for worn or damaged factory USB cabling. Designed to restore reliable USB data transfer and charging functionality, reduce intermittent connections, and eliminate noise or dropouts caused by broken wires or corroded contacts. Suitable for professional workshops and DIY technicians who service Citroen C4 (B7) and compatible Peugeot models.
Function And Application
- Carries USB data and 5V power between the vehicle’s infotainment/head unit and the dashboard or glovebox USB socket.
- Enables media playback from USB sticks, smartphone connection for audio, and supports firmware updates where the vehicle head unit uses a wired USB interface.
- Fits Citroen C4 B7 vehicles and may be used in related Stellantis platforms—check part numbers for exact fitment.
Installation Recommendations
- Before starting work, isolate any basic electrical load by switching the ignition off. For safety, remove the negative terminal of the battery if extensive disassembly is required.
- Access the existing cable via the glovebox, center console or lower fascia depending on the vehicle. Use plastic trim tools to avoid damaging interior panels.
- Unplug the old harness at both ends (head unit and USB socket). Inspect connectors and pin terminals for corrosion or damage before fitting the new cable.
- Route the new cable following the original harness path. Secure with clips or cable ties and avoid sharp edges, heat sources and moving components.
- After installation, reconnect the battery (if disconnected) and verify USB data and charging functions. Test with multiple devices and play media to confirm stable connection.
Most Common Failure Reasons
- Mechanical Damage: Bending, pinching or repeated movement during dashboard work can break internal conductors.
- Connector Corrosion: Moisture ingress or contaminated connectors cause intermittent contacts and data loss.
- Wear And Fatigue: Frequent plugging/unplugging of devices causes connector wear and loosening over time.
- Poor Previous Repair: Low-quality splices, crimping or insulation damage during earlier repairs can lead to failure.
Technical Information
- Manufacturer: Stellantis
- Model: Citroen C4 (B7); Compatible With Some Peugeot Models (e.g. Peugeot 308)
- Product Codes: 9671138380, 6574SV
- Additional Numbers: OEM References 9671138380 / 6574SV
Notes For Mechanics And Enthusiasts
Part numbers are commonly used when sourcing this cable—searching 9671138380 or 6574SV will usually return the correct item. Inspect the head unit connector carefully: occasional faults originate at the unit side rather than the cable, so verify both ends before replacing. Use OEM-quality connectors and proper routing to ensure a long service life.
