Remote control with circuit compatible with Ford Fiesta Ka Mondeo 4C 1235189

This remote control with adaptable circuit compatible with Ford is intended for the replacement or duplication of an original key on several Ford models from the late 1990s and early 2000s. It has 3 buttons (open, close, trunk) and operates on 433 MHz radio frequency .

It incorporates a 4C transponder , used on Ford immobilizer systems of this generation. The remote control is supplied brand new , with a CR2032 battery included and a blank FO21 key blade , ready to be programmed using a diagnostic tool or a suitable Ford procedure .

This is an adaptable part with integrated electronics , compatible with the corresponding Ford manufacturer references, offering a reliable and economical solution for key replacement.

Technical specifications

• Type: Ford compatible remote control/key

• Number of buttons: 3 (open / close / trunk)

• Radio frequency: 433 MHz

• Modulation: RF (Ford system)

• Transponder: 4C

• Immobilizer: Yes (integrated immobilizer)

• Hands-free function: No

• Key blade: FO21 supplied (blank)

• Battery: CR2032 included

• Condition: New

• Product: Aftermarket (non-OEM)

Vehicle compatibility

Assignment compatible with:

• Ford Cougar (1998 – 2000)

• Ford Fiesta (2000 – 2002)

• Ford KA (2000 – 2007)

• Ford Mondeo (1998 – 2000)

• Ford Puma (1999 – 2002)

Compatible original part number

• 1235189

Programming – important information

⚠️ Blank remote control – programming required

This remote control must be programmed to the vehicle in order to function correctly.

The program typically includes:

• RF learning,

• 4C transponder pairing,

• synchronization with the Ford immobilizer system.

Who can program this transmitter?

• Ford Garage (manufacturer network): ✅ Yes

• Equipped detached garage: ✅ Yes

• Specialized Electromechanical Technician: ✅ Yes

• Automotive locksmith: ✅ Yes

Important conditions before ordering

Before purchasing, be sure to check:

• the frequency 433 MHz ,

• the 4C transponder type ,

• the FO21 blade reference ,

• the exact compatibility of the vehicle model/year .

A transponder or generation incompatibility renders the key unprogrammable .