Airbag control unit with part number XL2Z-14B321-EB

What does the airbag control unit XL2Z-14B321-EB do?

The airbag control unit XL2Z-14B321-EB manages the restraint system (SRS) in Ford. It evaluates the crash sensors, determines within milliseconds in an accident which airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The unit records detected faults in the fault memory and shows them via the airbag warning light in the instrument cluster.

After an accident, it stores crash data and locks itself. Only the repair lifts the lock.

Why does the control unit XL2Z-14B321-EB fail?

Stored crash data from an accident causes the most frequent malfunction on the XL2Z-14B321-EB, even if no airbag has been triggered. Other causes include ageing electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 takes on this task during the repair.

The remaining causes at a glance:

• Ageing electronic components
• Cold solder joints
• Moisture and corrosion on plug connections
• Voltage spikes, for example from a weak battery or jump-starting

How can you tell that the XL2Z-14B321-EB is defective?

On the XL2Z-14B321-EB, a defect shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently. This may be accompanied by a fault message in the instrument cluster, a diagnostic tool without connection to the control unit, and a fault memory that cannot be cleared.

Signs like these mean that airbags and seatbelt pretensioners may not deploy in an emergency. Please have the condition checked promptly.

Only the examination of the stored entries shows whether the control unit itself is affected.

Which vehicles is the XL2Z-14B321-EB fitted in?

The control unit XL2Z-14B321-EB is fitted in these vehicles: Ford Explorer 2 UN105 (1995-2001). Your vehicle documents can confirm whether your vehicle is included.

The list shows the vehicles that have come to our attention so far:

• Ford Explorer 2 UN105 (1995-2001)

Compare the part number on the label of the removed unit with this page to make sure it is the correct unit. The cause is clarified by the fault memory: have it read out beforehand, because only this shows whether the control unit is defective or whether a plug or cable is behind it.

For the same vehicles, we also repair control units with the part numbers DB5T-14B321-AF, GB5T-14B321-AC, XL2A-14B321-ED.

How does the repair of the XL2Z-14B321-EB work?

Processing at Airbag24 takes 3–4 working days as a rule for the XL2Z-14B321-EB. This covers checking, repairing and testing.

Your steps before shipping begin with reading out the fault memory; enclose the log. Then disconnect the battery and remove the control unit. Create the repair order online, then pack the unit and send it in.

Airbag24 checks the unit on the test bench, repairs defective components, deletes the stored crash data and carries out a function test. Your unit is then 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 XL2Z-14B321-EB get to Airbag24?

Either you send the control unit XL2Z-14B321-EB yourself as a parcel to Airbag24, or you book a UPS collection for an extra charge. Returns after the repair are made by UPS.

Enclose the printed repair order with the parcel and pack the unit shock-proof.