Airbag control unit with part number AW93-14D374-DA

What does the airbag control unit AW93-14D374-DA do?

The airbag control unit AW93-14D374-DA controls the restraint system (SRS) of Jaguar. It evaluates the signals from the crash sensors and determines within milliseconds which airbags and seatbelt pretensioners are triggered. It checks the system for faults continuously.

It shows faults it finds via the airbag warning light in the instrument cluster. After an accident it stores crash data and locks itself.

You can think of it as the control unit to which all sensors and trigger units are connected.

Why does the control unit AW93-14D374-DA fail?

The most common cause is crash data from an accident, which is stored even without an airbag triggering and cannot be erased with a normal diagnostic tool. Added to this are aged electronics, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

Stored crash data remains in the control unit after an accident until it is removed. Airbag24 removes it during the repair, which a usual diagnostic tool cannot do.

The other causes concern the electronics and their connections. Aged components and cold solder joints can lead to malfunctions, moisture and corrosion disturb the contact, and voltage spikes, for example with a weak battery or when starting with jump leads, put strain on the electronics.

How can you tell that the AW93-14D374-DA is defective?

The airbag warning light in the instrument cluster lights up continuously or flickers intermittently. Also present are an error message in the instrument cluster, a diagnostic tool without connection to the control unit, and a fault memory that cannot be cleared.

As long as the fault persists, airbags and seatbelt pretensioners may not be able to trigger in an emergency. An error message alone says nothing about the cause, but it is the reason for a check.

If you see these signs, have the fault memory read out promptly.

Which vehicles is the AW93-14D374-DA fitted in?

This information applies to the part number AW93-14D374-DA. The airbag control unit AW93-14D374-DA is installed in these vehicles: Jaguar XJ X351 (2009-2019).

The list of vehicles follows in an overview, so the entry can be checked quickly.

• Jaguar XJ X351 (2009-2019)

If the part number on the label of the removed unit matches this page, it is the right unit. The comparison shows nothing more. Whether the control unit is defective or a plug or cable is the cause is shown only by the fault memory. Therefore have it read out before anything else.

For the same vehicles, we also repair control units with the part numbers C2D5633.

How does the repair of the AW93-14D374-DA work?

First have the fault memory read out and attach the log to the unit, then disconnect the battery; only afterwards remove the control unit. Then create a repair order online and send the well-packed unit in. At Airbag24, testing, repair and function test usually take 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, removes the stored crash data and carries out a function test. Afterwards your own unit is sent 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 AW93-14D374-DA 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 into the parcel and pack the unit shock-proof.

Sturdy packaging matters, because a damaged housing can delay the check.