Airbag control unit with part number AM5T-14B321-BE

What does the airbag control unit AM5T-14B321-BE do?

The airbag control unit AM5T-14B321-BE forms the central control unit of the restraint system (SRS) for Ford. It processes the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

It monitors the entire system continuously. If it detects a fault, it reports this via the airbag warning light in the instrument cluster, so that you notice the fault.

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

Why does the control unit AM5T-14B321-BE fail?

The most common cause: crash data stored after an accident, even if no airbag has deployed. It cannot be erased with a normal diagnostic tool. Other factors include aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Airbag24 erases the stored crash data during the repair. The other causes concern the electronics themselves or their connections, so it cannot be decided without testing which of them applies.

Voltage spikes arise, for example, from a weak battery or a jump start. The short list summarises the other causes:

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or jump start

How can you tell that the AM5T-14B321-BE is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears in the instrument cluster, the diagnostic tool finds no connection to the control unit, or the fault memory cannot be erased.

In an emergency, airbags and seatbelt pretensioners may then not deploy. The light indicates the finding, so it is important not to ignore it but to have it checked promptly.

Which vehicles is the AM5T-14B321-BE fitted in?

The control unit AM5T-14B321-BE is fitted in these vehicles: Ford C-Max 2 (2010-2015) and 2 Facelift (2015-2019); Ford Grand C-Max 2 Facelift (2015-2019) and 2 (2010-2015).

We list the individual assignments in this overview:

• Ford C-Max 2 (2010-2015)
• Ford C-Max 2 Facelift (2015-2019)
• Ford Grand C-Max 2 Facelift (2015-2019)
• Ford Grand C-Max 2 (2010-2015)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the correct unit in front of you. Have the fault memory read out beforehand. Only this result shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 1790083, 285001452, 285011577, AM5T-14B321-AG, DM5T 14B321 SA, DM5T-14B321-EH.

How does the repair of the AM5T-14B321-BE work?

First have the fault memory read out and enclose the log. Then disconnect the battery, and only after that remove the control unit. Next, create a repair order online and send in the carefully packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the control unit on the test bench and repairs defective components. Afterwards, Airbag24 erases the stored crash data and carries out a function test before your own unit is 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 AM5T-14B321-BE 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 control unit shockproof.