Description
Product Overview
This immobilizer kit includes the immobilizer control unit and two key fobs with transponder chips, originally matched together from a single vehicle. It is intended as a direct replacement for PSA vehicles and can be programmed or adapted to work with first-generation Citroën C1 and Peugeot 107 models. Many customers search by part numbers, so the included references 89780-0H021 and 6545PR are useful when checking compatibility.
Who Is This For
Designed for professional auto technicians and competent DIY enthusiasts who need a reliable replacement immobilizer solution. Ideal when keys are lost, immobilizer faults occur, or when swapping a swapped/incompatible unit needs reprogramming. Works best when combined with VIN verification and proper diagnostic equipment.
Function And Typical Faults
The immobilizer unit verifies transponder keys and prevents engine start if an unrecognised key is used. Typical failure causes include electrical damage, water ingress or corrosion, internal component wear, or key transponder failure. Symptoms of a faulty immobilizer include engine crank but no start, warning lights on the dash, or intermittent recognition of keys.
Installation And Programming
Installation requires basic disassembly of interior trim to access the immobilizer module (commonly located under the dashboard). Standard steps include disconnecting the battery before work, replacing the unit, restoring connections, and then performing key and ECU synchronization. Programming or adaptation must be carried out with an OEM-level diagnostic tool or a compatible key programmer (for PSA vehicles often DiagBox / PP2000 or equivalent). The engine control unit can be re-flashed or adapted from your vehicle where required to match the immobilizer.
Practical Notes
- Often searched by part number: use 89780-0H021 or 6545PR when verifying fitment.
- When ordering, provide your VIN to allow a compatibility check before dispatch.
- Two fully functional transponder key fobs are included for immediate programming.
- For best results, programming should be performed by an experienced technician or with appropriate diagnostic hardware.
Technical Information
- Manufacturer: PSA (Citroën / Peugeot)
- Model: Citroën C1; Peugeot 107
- Product Codes: 89780-0H021; 6545PR
- Other Numbers: 6545PR
Please verify vehicle compatibility by providing the VIN at order time. This ensures the immobilizer and key set will match your vehicle configuration and reduces installation time. If you are unsure about programming, consult your local workshop or an experienced PSA technician.
