Imo + ECU + chip Citroën C1 Peugeot 107 1.0 1KR EURO 4

Description

Immobilizer unit, 2x keys with chip – aftermarket, engine control unit 89661-0H070 0261S04464, ignition barrel 4162FK. All matched together from one vehicle. Originates from a Citroën C1 (2009).

This combined set is ideal for professional workshops and DIY mechanics who need a ready-matched immobilizer solution for Citroën C1 and Peugeot 107 with the 1.0 1KR Euro 4 engine. The package contains the vehicle’s immobilizer unit, engine control unit (ECU), ignition barrel and two transponder keys taken from the same donor car — reducing the amount of coding work compared with mismatched components. Customers often search by part numbers listed below, so the set is suitable when replacing a failed immobilizer system or replacing an ECU after electrical damage.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën C1, Peugeot 107 (1.0 1KR, Euro 4) — Origin: Citroën C1 (2009)
• Product Codes: 89661-0H070, 0261S04464, 4162FK
• Other Numbers: 89780-0H020, 89780-0H021, 89740-0H010, 89740-0H011, 6580V7, 6252P3, 1943FE

What The Set Does

The immobilizer unit communicates with the transponder chips inside the keys to allow engine start. The Engine Control Unit (ECU) manages fuel injection, ignition timing and emission control; it will only allow the engine to crank and start when it receives the correct immobilizer authorization. The ignition barrel provides the mechanical switch function and houses the antenna/reader for the transponder key.

Replacement Procedure

Typical replacement steps for experienced technicians:

• Disconnect the battery before any work.
• Remove steering column covers to access ignition barrel and immobilizer module.
• Unplug electrical connectors and remove the ignition barrel and immobilizer module.
• Access and remove the ECU (usually located in the engine bay/passenger compartment depending on model).
• Install the donor units in reverse order; ensure connectors are clean and secure.
• Perform cloning or coding procedure (see Installation and Coding section below) to authorize keys and ECU with the immobilizer.

Common Failure Causes

• Corrosion or water ingress causing connector faults or internal damage to immobilizer or ECU.
• Electrical surges from jump-starts or charging faults damaging ECU electronics.
• Wear to the ignition barrel or key transponder failure due to mechanical damage.
• Intermittent faults caused by poor grounding or loose connectors.

Installation Recommendations

• Always Disconnect The Battery Before Removal/Installation To Prevent Damage And Avoid Airbag/ECU Faults.
• Inspect Connectors And Wiring For Corrosion, Clean Contacts, And Replace Damaged Clips Or Harnesses.
• Use Proper Diagnostic/Programming Equipment (DiagBox/Lexia/PP2000 Or Equivalent) For Coding And Key Learning.
• If Possible, Transfer Mounting Hardware And Connector Brackets From The Original Vehicle To Ensure Correct Fitment.
• After Installation, Clear Fault Codes And Perform A Full System Check: Immobilizer, Central Locking, Engine Start And Readiness Tests.

Installation And Coding – Important

• The unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
• Options For Commissioning:
  1. Cloning Data From The Old Unit (EEPROM/Flash) – After Cloning The Unit Is Plug And Play.
  2. Virginization And Subsequent Initialization/Telecoding Via DiagBox (Possibly Online) + Key Adaptation.
• Recommended To Be Performed By A Technician With PSA Service Equipment (DiagBox/Lexia/PP2000).
• Before Removal/Installation Always Disconnect The Battery And Follow The Manufacturer’S Procedure To Avoid Damaging The Unit.

Why Choose This Set

Buying the matched set from a single donor vehicle reduces compatibility issues between immobilizer, keys and ECU and can save significant time during commissioning. It is a practical option for garages and experienced DIYers who can perform cloning or professional coding. The set includes two keys with chips, which is useful when replacing a lost or damaged key pair.

Included In The Package

• Immobilizer Unit (matched)
• Engine Control Unit (89661-0H070 / 0261S04464)
• Ignition Barrel (4162FK)
• Two Transponder Keys

Suitable For Professionals And Competent DIY Mechanics Familiar With Immobilizer Coding And ECU Handling. Always Follow Safe Working Practices And Use Correct Diagnostic Tools For Final Commissioning.