Airbag control unit with part number 6L24-14B321-AF

What does the airbag control unit 6L24-14B321-AF do?

The airbag control unit 6L24-14B321-AF coordinates the restraint system (SRS) of Ford. From the signals of the crash sensors, it determines in an accident within milliseconds which airbags and seatbelt pretensioners are triggered.

During operation the unit monitors all connected components. If it detects a fault, it switches on the airbag warning light in the instrument cluster and stores the fault in the fault memory.

After an accident the control unit also stores crash data. It then locks itself.

Why does the control unit 6L24-14B321-AF fail?

The most common cause is stored crash data after an accident, even without a triggered airbag. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting.

A diagnostic tool of the usual kind does not remove this data. During the repair, Airbag24 erases it.

The other causes relate to ageing, moisture and electrical stress, in other words to what acts on the electronics in operation. A solder joint that was connected cold can loosen over time.

How can you tell that the 6L24-14B321-AF is defective?

Signs are an airbag warning light that stays on permanently or intermittently, an error message in the instrument cluster, a missing contact between the diagnostic tool and the control unit, and a fault memory that cannot be cleared.

If these signs appear, there is a possibility that the airbags and seatbelt pretensioners will not deploy in an emergency. Only reading the fault memory shows whether this is actually the case, but a prompt check is the right step either way.

The warning light is the notice that the vehicle itself gives. Following up on it helps you recognise a defect in time.

Which vehicles is the 6L24-14B321-AF fitted in?

The control unit 6L24-14B321-AF is fitted in these vehicles: Ford Explorer 4 U251 (2006-2010).

Below you can see which vehicles this part number is intended for.

• Ford Explorer 4 U251 (2006-2010)

Compare the part number on the label of the unit with this page. This only confirms whether it is the right unit. Have the fault memory read out beforehand, because only its content 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 6L24-14B321-CB, 6L24-14B321-GA, 7L24-14B321-AD, 7L24-14B321-CA, 7L24-14B321-DA, 9L24-14B321-DB.

How does the repair of the 6L24-14B321-AF work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit, before you create the repair order online. Testing, repair and checking at Airbag24 usually take 3–4 working days.

The sequence is binding for safety reasons, because no voltage may remain present during removal. Pack the unit only once the order has been created.

At Airbag24 the team examines the unit on the test bench, replaces defective components, erases the crash data and carries out a function test. The 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 6L24-14B321-AF get to Airbag24?

You send the control unit in as a parcel or, for an extra charge, book a UPS collection. Airbag24 sends it back by UPS after the repair. Enclose the printed repair order and pack the unit shock-proof.

Safe packing means that the unit cannot slip inside the carton.