Airbag control unit with part number M8E2-14D374-AD

What does the airbag control unit M8E2-14D374-AD do?

The airbag control unit M8E2-14D374-AD coordinates the restraint system (SRS) of Land Rover and is its central control unit. It evaluates the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners to trigger. After an accident, it stores crash data and locks itself.

The unit monitors the system constantly. If it detects a fault, it indicates this via the airbag warning light in the instrument cluster. This way you learn in good time that something is wrong with the restraint system. The safety of the occupants therefore depends largely on this control unit.

Why does the control unit M8E2-14D374-AD fail?

Most common cause with the M8E2-14D374-AD: crash data stored after an accident that cannot be erased with a standard diagnostic tool. With this control unit, erasing the crash data is often not possible; if you wish to have it erased, contact Airbag24 briefly before sending the unit in, and Airbag24 will then check the part number. Other causes are aged electronic components, cold solder joints, moisture and corrosion, and voltage spikes.

Crash data is also stored when no airbag has deployed. Other possible causes are:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or jump-starting

How can you tell that the M8E2-14D374-AD is defective?

A fault in the M8E2-14D374-AD gives itself away through the airbag warning light in the instrument cluster, which stays on permanently or intermittently. A fault message in the instrument cluster, a disrupted connection to the diagnostic tool and a fault memory that cannot be cleared may also occur.

In an emergency, the airbags and seatbelt pretensioners may then fail to deploy. Such a fault should therefore be checked promptly. The underlying cause cannot be determined from these signs alone. Signs of this kind should not be ignored.

Which vehicles is the M8E2-14D374-AD fitted in?

The M8E2-14D374-AD is fitted in this vehicle: Land Rover Discovery 5 (2017-2020). To check whether your car is one of them, use this list.

The following vehicles are listed for this part number:

• Land Rover Discovery 5 (2017-2020)

Compare the part number on the label of the removed unit with this page. This ensures that you have the correct unit in front of you. Whether the control unit is faulty or a connector or cable is causing the fault is shown only by the fault memory, which you should have read out beforehand.

For the same vehicles, we also repair control units with the part numbers FK7214D374AJ, K8D2-14D374-AB, LR081400, YWC106910.

How does the repair of the M8E2-14D374-AD work?

First have the fault memory read out and enclose the log. Then disconnect the battery, and only then remove the M8E2-14D374-AD. Next, create a repair order online and send the unit in, well packed.

Airbag24 checks the unit on the test bench, repairs defective components and carries out a functional test, after which the unit goes back to you. The functional test checks the unit before it is sent back. If you want the crash data erased, contact Airbag24 briefly before sending the unit in.

Processing at Airbag24 usually takes 3–4 working days. 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 M8E2-14D374-AD get to Airbag24?

You send the M8E2-14D374-AD in 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-resistant. Make sure the parcel is securely sealed.