Airbag control unit with part number DB5T-14B321-AF

What does the airbag control unit DB5T-14B321-AF do?

The airbag control unit DB5T-14B321-AF coordinates the restraint system (SRS) of Ford. It receives the signals from the crash sensors, decides in an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system without interruption. Faults appear via the airbag warning light.

After an accident it stores crash data and locks itself. The function runs completely in the background.

Precisely because the control works invisibly, its message in the instrument cluster is so important.

Why does the control unit DB5T-14B321-AF fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered; a normal diagnostic tool does not erase it. Other causes are aged electronic components, cold solder joints, moisture and corrosion, and voltage spikes.

The other causes include:

• aged components on the electronics
• cold solder joints
• moisture and corrosion at plug connectors
• voltage spikes, for example from a weak battery or a jump start

The cause can only be narrowed down by reading out the fault memory and a precise test of the unit.

How can you tell that the DB5T-14B321-AF is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears. In addition, there is no connection to the diagnostic tool and a fault memory that cannot be erased. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The airbag warning light in the instrument cluster is the most important signal a defect produces. If it is ignored, the unit remains in its state until it is examined.

So take the warning seriously and have the control unit checked promptly.

Which vehicles is the DB5T-14B321-AF fitted in?

The DB5T-14B321-AF is fitted in these vehicles: Ford Explorer 5 (2011-2019) and 2 UN105 (1995-2001).

According to our current data, the assignment for Ford includes these vehicles:

• Ford Explorer 5 (2011-2019)
• Ford Explorer 2 UN105 (1995-2001)

Compare the part number on the label of the removed unit with this page; that only ensures you have the right unit. Then have the fault memory read out, because this result shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers BB5T-14B321-AH, DB5T-14B321-AE, DB5T-14B321-AG, EB5T-14B321-AA, GB5T-14B321-AC, HB5T-14B321-AA.

How does the repair of the DB5T-14B321-AF work?

First have the fault memory read out and enclose the printout. Then disconnect the battery, remove the control unit and create a repair order online, with which you send in the well-packed unit.

When removing it, keep this order strictly, because it is for your safety.

Airbag24 tests the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Afterwards, your own unit is returned. Processing at Airbag24 usually takes 3–4 working days. 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 DB5T-14B321-AF get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Put the printed repair order in the parcel and pack the unit shock-proof.