Airbag control unit with part number HS7T-14B321-BC

What does the airbag control unit HS7T-14B321-BC do?

The airbag control unit HS7T-14B321-BC controls the restraint system (SRS) at Ford and is therefore responsible for triggering the airbags and seatbelt pretensioners. It reads the signals from the crash sensors, monitors the system constantly and reports faults via the airbag warning light.

In a collision, the decision is made within fractions of a second.

After an accident, the unit records crash data and locks itself. This function is central to occupant safety.

Why does the control unit HS7T-14B321-BC fail?

Most often the cause lies in crash data from an accident that remains in the memory, even if no airbag has triggered. A normal diagnostic tool cannot erase it. Other causes include aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

• Aged components in the control unit
• Cold solder joints on the circuit board
• Moisture and corrosion at plug connections
• Voltage spikes, for example with a weak battery or a jump start

The crash data remains in the control unit after the accident. It can be read out, but it cannot easily be erased.

Aged components and cold solder joints are hard to spot from the outside. Moisture and corrosion attack the contacts.

How can you tell that the HS7T-14B321-BC is defective?

A defect shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Fault messages and diagnostic problems may also appear.

• Airbag warning light in the instrument cluster, permanent or intermittent
• Fault message in the instrument cluster
• The diagnostic tool finds no connection to the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then fail to trigger. A prompt check is therefore advisable.

Which vehicles is the HS7T-14B321-BC fitted in?

The control unit HS7T-14B321-BC is fitted in these vehicles: Ford Edge 2 (2015-2024). The part number of this unit is what counts for the assignment.

We list the following vehicles for this part number:

• Ford Edge 2 (2015-2024)

Comparing the part number on the label of the removed unit with this page confirms that you have the right unit. Also have the fault memory read out before removal. 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 7T4Z-14B321-BJ, DT4Z-14B321-A, DT4Z-14B321-B, E1GT-14B321-BE, H2GZ-14B321-A, K2GT 14B321 EB.

How does the repair of the HS7T-14B321-BC work?

Checking, repairing and testing at Airbag24 usually takes 3–4 working days. Before removal, have the fault memory read out and enclose the report, and disconnect the battery. Only then remove the control unit.

Afterwards, create a repair order online and send in the well-packed unit. At our site, the test bench, the repair of defective components, the deletion of the crash data and a function test follow. Then 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 HS7T-14B321-BC get to Airbag24?

Either you send the unit as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns the unit to you by UPS.

The printed repair order goes into the parcel. Pack the unit shock-proof before handing it over.