Airbag control unit with part number 8V51-14B321-FE

What does the airbag control unit 8V51-14B321-FE do?

The airbag control unit 8V51-14B321-FE carries out the functions of the restraint system (SRS) of Ford in the vehicle. It processes the signals from the crash sensors, selects within milliseconds the airbags and seatbelt pretensioners that should be triggered in an accident, and monitors the system continuously. After an accident it stores crash data and locks itself.

The control unit makes faults visible via the airbag warning light in the instrument cluster.

Why does the control unit 8V51-14B321-FE fail?

The most common cause with the 8V51-14B321-FE is crash data stored after an accident, even if no airbag has deployed. With this control unit, deleting the crash data is often not possible; if you would like it deleted, get in touch with Airbag24 briefly before sending it in. Other causes are ageing components, cold solder joints, moisture and corrosion, and voltage spikes.

Crash data remains in the unit after an accident, even if the airbag did not deploy. A normal diagnostic tool cannot remove it, so it is advisable to coordinate with Airbag24 before sending the unit in.

Ageing components and cold solder joints show up over time, while moisture and corrosion at plug connections weaken the contact. Voltage spikes, for example from a weak battery or a jump start, place additional strain on the electronics.

How can you tell that the 8V51-14B321-FE is defective?

A defect in the 8V51-14B321-FE shows up as the airbag warning light in the instrument cluster, which stays on permanently or intermittently. An error message may also appear, the diagnostic tool gets no connection to the control unit, or the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

If the warning appears in the instrument cluster, have the system checked promptly.

Which vehicles is the 8V51-14B321-FE fitted in?

The airbag control unit 8V51-14B321-FE is fitted in these vehicles: Ford Fiesta 7 ’09 (2008-2017).

The allocation at a glance:

• Ford Fiesta 7 ’09 (2008-2017)

Comparing the number on the label of the removed unit with this page ensures that you have the correct unit. Only the fault memory, which you have read out beforehand, shows whether the control unit itself is defective or whether a connector or cable is responsible for the fault.

For the same vehicles, we also repair control units with the part numbers AA6T-14B321-CA, AA6T-14B321-EA, AA6T-14B321-FA, AE83-14B321-AD, AE83-14B321-AE, AE83-14B321-AF.

How does the repair of the 8V51-14B321-FE work?

First have the fault memory of the 8V51-14B321-FE read out and enclose the log. Then disconnect the battery, remove the control unit and create a repair order online. Finally, pack the unit well and send it in.

Airbag24 checks the unit on the test bench, repairs defective components and carries out a functional test. Processing usually takes 3–4 working days. If you would like the crash data deleted, get in touch with Airbag24 briefly before sending the unit in. Your unit is then sent back to you.

Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 8V51-14B321-FE get to Airbag24?

You can send the control unit 8V51-14B321-FE as a parcel or have it collected by UPS for an extra charge. After the repair, Airbag24 returns it by UPS. The printed repair order goes into the parcel, and the unit is packed shock-proof.

The packaging protects the unit throughout the entire journey.