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

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

The airbag control unit DW93-14D374-AD is the central control unit of the restraint system (SRS) for Jaguar. It evaluates the signals from the crash sensors, decides in an accident within fractions of a second on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously. After an accident it stores crash data and locks itself.

Control of the restraint devices runs entirely through this unit. It reports faults in the system via the airbag warning light in the instrument cluster.

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

The most common cause is stored crash data, even if no airbag was triggered in the event; a standard diagnostic tool does not erase it. Other causes include ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

Stored crash data remains in the unit, even if no airbag was triggered. Airbag24 erases it during the repair.

The other causes develop over a longer period. A loose or corroded plug and the ageing of the electronics belong here, as do voltage spikes from a weak battery.

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

The airbag warning light in the instrument cluster lights up permanently or intermittently, a fault message appears in the instrument cluster, and the diagnostic tool has no connection to the control unit. If the fault memory cannot be cleared, this sign is added. Then airbags and seatbelt pretensioners may fail to trigger in an emergency.

The airbag warning light is the most direct indication of a finding in the restraint system. A defect is therefore not a guess, but is explicitly reported by the display.

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

The DW93-14D374-AD is fitted in these vehicles: Jaguar XJ X351 (2009-2019).

The vehicles for which this part number is stored are shown in the following list:

• Jaguar XJ X351 (2009-2019)

Compare the part number on the label of the removed unit with this page; this only ensures that it is the correct unit. Also read out the fault memory beforehand, because only this log shows whether the control unit itself is the cause or a plug or cable is.

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

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

First read out the fault memory and attach the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in well packed. For checking, repairing and testing at Airbag24, 3–4 working days are usually planned.

The order of these steps is for your safety, which is why it is binding. Airbag24 checks the unit on the test bench, renews defective components, erases stored crash data and carries out a function test.

Your own 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 DW93-14D374-AD get to Airbag24?

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

Put the printed repair order into the parcel, and pack the unit shockproof.