Description
Antenna switching unit for Citroën and Peugeot vehicles.
Overview
This antenna switching unit is an electrical control module used on various Citroën and Peugeot models to manage the power and switching functions of the vehicle’s automatic antenna. It controls extension and retraction of the power antenna, supplies switched power to the antenna motor or relay, and ensures the antenna is stowed or extended in response to radio or vehicle commands. The part is commonly searched by its OEM references and part numbers, so customers frequently look for 9655888380 or 6561EC when sourcing replacements.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot OEM)
- Model: Citroën C4, Citroën C5, Citroën C6, Citroën C8; Peugeot 206, Peugeot 307, Peugeot 407, Peugeot 607, Peugeot 807
- Product Codes: 9655888380, 6561EC
- Additional Numbers: Not specified
- Operating Voltage: 12 V vehicle electrical system
Compatibility
Compatible with a range of Citroën and Peugeot models listed above. Fitment may depend on vehicle equipment level and production year; the part is often identified and purchased by its OEM number.
Diagnostics and Replacement Guide
Basic diagnostic steps before replacement:
- Check the relevant fuse(s) and antenna relay for continuity or signs of damage.
- Listen for the antenna motor when commanding the radio to extend; if the motor is silent, verify power and ground at the antenna unit connector with a multimeter.
- Inspect connectors and wiring for corrosion, bent pins or broken wires.
Typical replacement procedure (general guidance):
- Disconnect the negative terminal of the battery to avoid short circuits.
- Locate the antenna switching unit — location can vary by model (common mounting positions include behind the dash, under the glovebox, near the antenna base in the roof lining or in the trunk area).
- Remove any trim or panels necessary to access the unit and unplug the electrical connectors.
- Unbolt the unit, transfer any mounting hardware if required, and install the new unit in the reverse order.
- Reconnect the battery and verify correct operation: extend/retract the antenna and check for radio reception and proper stow position.
Installation Recommendations
- Always disconnect the battery before working on electrical modules.
- Use dielectric grease on connector pins after cleaning to reduce future corrosion.
- Verify ground connections and fuses related to the antenna circuit before concluding the job.
- Securely fasten the unit and avoid pinching wiring when reinstalling trim panels.
Common Reasons For Failure
- Water ingress and corrosion of connectors or internal contacts, especially in vehicles exposed to moisture or road salt.
- Wear of internal relays or switching contacts after long service life.
- Damaged wiring harnesses or crushed/loose connector pins leading to intermittent operation.
- Electrical surges or short circuits affecting internal electronics.
Practical Notes
Service life varies with usage and environment; failures are more common on high-mileage vehicles or those regularly exposed to humid or salty conditions. Before replacing the unit, rule out simple causes such as blown fuses or a seized antenna mast. Using the OEM part numbers 9655888380 and 6561EC in search or ordering increases the likelihood of correct fitment.
