Airbag control unit with part number KX7T-14B321-BE

What does the airbag control unit KX7T-14B321-BE do?

The airbag control unit KX7T-14B321-BE processes the measured values of the crash sensors for Ford and coordinates the restraint system (SRS). In an accident it decides within fractions of a second which airbags and seatbelt pretensioners are triggered, and it monitors the entire system.

The unit outputs detected faults via the airbag warning light in the instrument cluster. In this way the state of the system stays visible to the driver and the workshop.

If an accident occurs, the unit records crash data and locks itself. This applies regardless of whether an airbag was actually triggered.

Why does the control unit KX7T-14B321-BE fail?

Crash data stored in the control unit after an accident is the most common cause, even if no airbag has deployed. A normal diagnostic tool cannot remove it; Airbag24 erases it during the repair. Further causes are aged components, cold solder joints, moisture and corrosion, and voltage spikes.

The data remains in memory until it is erased. The mere presence of this data, however, says nothing about whether the electronics are damaged.

The other causes concern the technology itself: electronic components age, solder joints can go cold, and moisture or corrosion affects the contact at the connectors. Voltage spikes, for example from a weak battery, round off the picture.

How can you tell that the KX7T-14B321-BE is defective?

Typical signs are an airbag warning light that stays on permanently or intermittently, a fault message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared. Then airbags and seatbelt pretensioners may not deploy in an emergency.

In detail, these points stand out:

• The airbag warning light in the instrument cluster stays on permanently or intermittently.
• A fault message appears in the instrument cluster.
• The diagnostic tool finds no connection to the control unit.
• The fault memory cannot be cleared.

The list does not yet say what the cause is; only reading out the fault memory does that.

Which vehicles is the KX7T-14B321-BE fitted in?

Use the list to check whether your car is included. The airbag control unit KX7T-14B321-BE is fitted in these vehicles: Ford Focus 4 ’18 (2018-2022) and 4 ’18 Facelift (from 2022).

The vehicles are listed one below the other:

• Ford Focus 4 ’18 (2018-2022)
• Ford Focus 4 ’18 Facelift (from 2022)

Before removal, the fault memory comes first. The label comparison, meaning the comparison of the part number on the unit with this page, only confirms that it is the right unit. Only reading out the fault memory shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers KX7T 14B321 BB.

How does the repair of the KX7T-14B321-BE work?

First have the fault memory read out and attach the log. Then disconnect the battery, and only after that remove the control unit; afterwards create a repair order online and send the unit in well packed. At Airbag24 it is first checked, then defective components are replaced, the crash data is erased and a function test is run.

The processing time at Airbag24 is usually 3–4 working days, calculated solely for checking, repairing and testing. The unit is returned to you afterwards.

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 KX7T-14B321-BE get to Airbag24?

Shipping as a parcel is possible, as is a UPS collection booked for an extra charge. Airbag24 then sends the repaired unit back to you by UPS.

The printed repair order belongs in the parcel, together with the shockproof packaging of the unit.