Airbag control unit with part number DV4T-14B321-ED

What does the airbag control unit DV4T-14B321-ED do?

The airbag control unit DV4T-14B321-ED forms the control centre of the restraint system (SRS) for Ford. It evaluates signals from the sensors, determines within milliseconds in a crash which airbags and seatbelt pretensioners to trigger, and monitors the system continuously. Faults are indicated via the airbag warning light.

The measured values come from sensors in the vehicle, and the decision is made by the unit without any action from the driver.

After a crash, the control unit records crash data and locks itself.

Why does the control unit DV4T-14B321-ED fail?

On the DV4T-14B321-ED, the most common cause is stored crash data, even if no airbag was triggered. Ageing, moisture and voltage spikes are also possible causes.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair.

Further causes at a glance:

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

How can you tell that the DV4T-14B321-ED is defective?

A defect on the DV4T-14B321-ED shows up as the airbag warning light in the instrument cluster, as a fault message, or as a diagnostic tool without a connection. A fault memory that cannot be cleared is added to these. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The signs include:

• airbag warning light stays on permanently or comes on intermittently
• fault message in the instrument cluster
• diagnostic tool does not find the control unit
• fault memory cannot be cleared

Have such signs examined promptly. The fault memory helps narrow down the cause.

Which vehicles is the DV4T-14B321-ED fitted in?

Vehicles in which the airbag control unit DV4T-14B321-ED is fitted include: Ford Kuga 2 ’13 Facelift (2016-2019) and 2 ’13 (2012-2016). The details apply to Ford.

The details are set out in this overview:

• Ford Kuga 2 ’13 Facelift (2016-2019)
• Ford Kuga 2 ’13 (2012-2016)

First compare the part number on the label of the removed unit with this page; this only confirms that it is the right unit. Before that, have the fault memory read out. Only this 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 285012044, CJ5T14B321AG, CV4T 14B321 CG, CV4T-14B321-CD, CV4T-14B321-CF, CV4T-14B321-CH.

How does the repair of the DV4T-14B321-ED work?

For the DV4T-14B321-ED, first have the fault memory read out and attach the log. Only then disconnect the battery and remove the control unit. Next, create a repair order online and send the unit in, well packed.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Airbag24 usually processes the unit within 3–4 working days. Your own unit then goes 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 DV4T-14B321-ED get to Airbag24?

You send the control unit DV4T-14B321-ED to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

The printed repair order goes into the parcel, and you pack the unit shock-proof.