Airbag control unit with part number DW93-14D374-BB

What does the airbag control unit DW93-14D374-BB do?

In the vehicle, the airbag control unit DW93-14D374-BB takes over control of the restraint system (SRS) of Jaguar. From the measured values of the crash sensors, it works out within milliseconds in an accident which airbags and seatbelt pretensioners are triggered.

During operation it checks the system without interruption. If it detects a fault, it shows this via the airbag warning light in the instrument cluster.

After an accident the unit stores crash data and then locks itself.

Why does the control unit DW93-14D374-BB fail?

The most common cause at the DW93-14D374-BB is stored crash data after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase this data. In addition, aged electronic components, cold solder joints, moisture at plug connections and voltage spikes come into consideration.

The record is created even without a deployed airbag and remains in the unit.

Ageing of components, cold solder joints and moisture at plugs cannot be told apart without testing.

Voltage spikes form a third group, for example with a weak battery or a jump-start.

How can you tell that the DW93-14D374-BB is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently as soon as the fault is registered. In addition, the DW93-14D374-BB may show a fault message in the instrument cluster, there is no connection to the diagnostic tool, and the fault memory cannot be cleared.

If you notice such signs, have the system examined promptly, because airbags and seatbelt pretensioners may not deploy in an emergency.

The light reflects the state of the system directly, and you should respond to it promptly.

Which vehicles is the DW93-14D374-BB fitted in?

The vehicle list on this page helps you check your car. The control unit DW93-14D374-BB is fitted in these vehicles: Jaguar XJ X351 (2009-2019).

These vehicles are known to us with this part number:

• Jaguar XJ X351 (2009-2019)

Compare the part number on the label of your removed unit with this page; this only confirms that you have the right unit. Also have the fault memory read out, because only that shows whether the control unit itself is defective or a plug or cable is the cause.

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

How does the repair of the DW93-14D374-BB work?

First have the fault memory read out and attach the log, then disconnect the battery. Only then remove the control unit DW93-14D374-BB and create a repair order online. Testing, repairing and checking at Airbag24 usually takes 3–4 working days.

Pack the unit well and send it off. Airbag24 checks it on the test bench, replaces defective components, erases the crash data and carries out a function test.

Afterwards your own unit comes 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 DW93-14D374-BB get to Airbag24?

You send your control unit DW93-14D374-BB as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back by UPS.

The printed repair order belongs in the parcel, and the unit must be packed shock-proof.