Airbag control unit with part number 4F13-14B321-AF

What does the airbag control unit 4F13-14B321-AF do?

The airbag control unit 4F13-14B321-AF is responsible for the restraint system (SRS) in Ford. It evaluates the crash sensors, decides in an accident within milliseconds on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously.

The unit reports faults via the airbag warning light in the instrument cluster. There you can see whether something in the system is wrong.

After an accident, the control unit stores crash data and locks itself.

Why does the control unit 4F13-14B321-AF fail?

In 4F13-14B321-AF, the most frequent fault is caused by crash data stored after an accident, even if no airbag was triggered. A normal diagnostic tool cannot erase it. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes can also be involved.

The crash data remains stored in the unit after the accident, regardless of whether an airbag fired. Airbag24 erases it as part of the repair.

Aged components and cold solder joints are also among the causes. Moisture and corrosion on the plug connections disrupt the contact, and voltage spikes, for example from a weak battery or jump-starting, put additional strain on the electronics.

How can you tell that the 4F13-14B321-AF is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently if the 4F13-14B321-AF has a defect. This may be accompanied by a fault message in the instrument cluster, a diagnostic tool without a connection, and a fault memory that cannot be cleared.

These signs indicate a fault in the restraint system. In an emergency, airbags and seatbelt pretensioners may fail to trigger.

Have the system checked promptly if the warning light is on. Ignoring the light is not a good idea.

Which vehicles is the 4F13-14B321-AF fitted in?

The control unit 4F13-14B321-AF is fitted in these vehicles: Ford Taurus 4 (2000-2007). Before removal, check whether your vehicle is listed here.

The list contains the vehicles known to us for this control unit.

• Ford Taurus 4 (2000-2007)

Comparing the part number on the label of the removed unit with this page only confirms that you have the right unit. Have the fault memory read out beforehand. Only this result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 1F1Z-14B321-AA, 2F1Z-14B321-AA, 3F1Z-14B321-CA, 4F1Z-14B321-AA, 5F13-14B321-AB, YF1A-14B321-AD.

How does the repair of the 4F13-14B321-AF work?

First have the fault memory read out and attach the log to the order. Then disconnect the battery and remove the control unit. Then create a repair order online and send in the well-packed unit.

This sequence is mandatory for safety reasons. The control unit may only be removed after the battery has been disconnected.

At Airbag24 the unit is checked on the test bench, defective components are renewed, the crash data is erased and a function test is carried out. Processing usually takes 3–4 working days. Your own unit is then 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 4F13-14B321-AF get to Airbag24?

You send the control unit 4F13-14B321-AF to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, UPS returns it to you.

Enclose the printed repair order in the parcel and pack the unit shock-resistant.