Airbag control unit with part number 8V59-14B321-CA

What does the airbag control unit 8V59-14B321-CA do?

The airbag control unit 8V59-14B321-CA is the central control unit of the restraint system (SRS) for Ford. It analyses the crash sensors, decides within milliseconds in a crash whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The unit indicates faults via the airbag warning light in the instrument cluster.

After a crash, the unit stores crash data and then locks itself.

Why does the control unit 8V59-14B321-CA fail?

Stored crash data is the most common cause with the 8V59-14B321-CA, even if no airbag has triggered. Other causes are aged components, cold solder joints, moisture and corrosion at connectors, and voltage spikes. On this control unit, deleting the crash data is often not possible; if you want it deleted, contact Airbag24 briefly before sending the unit in.

A standard diagnostic tool cannot remove these entries.

The other causes relate to electronics, connectors and the power supply. A weak battery or jump-starting can change the voltage briefly and considerably.

How can you tell that the 8V59-14B321-CA is defective?

The airbag warning light in the instrument cluster lights up constantly or intermittently when there is a defect in the 8V59-14B321-CA. Accompanying this, a fault message appears, there is no connection to the diagnostic tool, and the fault memory cannot be cleared.

In this case, the airbags and seatbelt pretensioners may fail to trigger in an emergency. Please have the finding checked promptly.

Which vehicles is the 8V59-14B321-CA fitted in?

The 8V59-14B321-CA is installed in this vehicle from Ford: Ford Fiesta 7 ’09 (2008-2017). The assignment applies only to this control unit.

Here are the vehicles with this control unit:

• Ford Fiesta 7 ’09 (2008-2017)

Comparing the part number on the label with this page ensures that you removed the right unit. It does not clarify the cause, however. Therefore have the fault memory read beforehand, because only that shows whether the control unit is defective or whether a connector or cable is the cause.

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 8V59-14B321-CA work?

At Airbag24, checking, repairing and testing the 8V59-14B321-CA usually take 3–4 working days. Your sequence begins with reading out the fault memory along with the log, followed by disconnecting the battery and removing the control unit. Then create a repair order online and send the well-packed unit in.

Airbag24 checks the unit on the test bench, replaces defective components and carries out a functional test. If you want the crash data deleted, arrange this with Airbag24 briefly before sending the unit in. Afterwards your own unit is returned 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 8V59-14B321-CA get to Airbag24?

You send the 8V59-14B321-CA control unit in as a parcel. Alternatively, book a UPS collection for an extra charge. Returns after the repair are made by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.