Description
Immobilizer Transponder Antenna For Peugeot And Citroën. Suitable For Peugeot 1007, 307 And Citroën C3. For Vehicles With A Multiplex Network.
This immobilizer transponder antenna is a direct-fit replacement designed for a range of Stellantis vehicles. It reads the key transponder signal and relays it to the immobilizer module, allowing the engine to start when a valid key is presented. The part is commonly searched by product numbers 9648445180, 9632897680 and 9652781780 and is compatible with multiplexed vehicle networks used on many Peugeot and Citroën models.
Function And Symptoms
The transponder antenna (also called an antenna ring or ignition antenna) sits around the ignition barrel or close to the steering column and detects the RFID chip inside the key. If the antenna fails or loses communication with the immobilizer control unit, typical symptoms include: engine cranks but will not start, Immobilizer/Key warning lamp illuminated, intermittent starting problems or complete no-start condition. Replacing the antenna often resolves signal loss issues between the key and the immobilizer.
Replacement Procedure
Replacement is straightforward for experienced mechanics and competent DIYers. Typical steps:
- Disconnect The Negative Battery Terminal To Prevent Short Circuits.
- Remove Steering Column Trim Panels To Access The Ignition Barrel Area.
- Locate The Antenna Ring Around The Ignition Barrel And Unplug The Electrical Connector.
- Remove The Old Antenna And Install The New Unit In The Same Position, Ensuring The Connector Is Secure.
- Reassemble The Trim Panels, Reconnect The Battery And Test With The Key. Verify That The Immobilizer Light Goes Out And That The Engine Starts Reliably.
In most cases the antenna itself does not require programming. After installation, clear any stored fault codes with a diagnostic tool and confirm normal immobilizer operation. If immobilizer faults persist, further diagnosis of wiring, connectors or the immobilizer control unit may be required.
Installation Recommendations
- Work With The Battery Disconnected To Avoid Airbag Or SRS System Faults While Removing Steering Column Covers.
- Handle Connectors Carefully And Inspect For Corrosion Or Bent Pins; Replace Damaged Clips Or Terminals.
- Ensure The Antenna Is Seated Correctly Around The Ignition Barrel To Maintain Reliable Transponder Reading.
- After Fitment, Perform A Test Start With All Known Keys And Scan For Immobilizer-Related Fault Codes.
Common Causes Of Failure
Most failures are caused by wiring damage, connector corrosion, exposure to moisture, mechanical damage during steering column work or impact from collisions. Age-related degradation of the antenna coil or insulation may also reduce read range and cause intermittent faults. Faulty aftermarket keys or damaged transponder chips can produce similar symptoms; always verify key functionality when diagnosing an antenna fault.
Technical Information
- Manufacturer: Stellantis (Citroën, Peugeot)
- Model: Peugeot 1007; Peugeot 307; Citroën C3
- Product Codes: 9648445180, 9632897680, 9652781780
- Other Numbers: 616073, 6160C0, 616087, 6160C2
This transponder antenna is aimed at professional technicians and competent DIYers who want a reliable replacement part that restores immobilizer communication. When ordering, include any vehicle-specific details and the known part number to improve the chance of immediate fitment. The listed product numbers are commonly used when searching for the correct unit.
