Airbag control unit with part number DS7T-14B321-CE

What does the airbag control unit DS7T-14B321-CE do?

The airbag control unit DS7T-14B321-CE is the central unit of the restraint system (SRS) for Ford. It evaluates the crash sensors, decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system permanently. Faults are indicated via the airbag warning light.

The monitoring covers sensors, wiring and output stages. Every detected deviation is recorded in the fault memory.

After an accident, the control unit stores crash data and locks itself. For the workshop, this is the point at which every repair begins.

Why does the control unit DS7T-14B321-CE fail?

The most common causes are stored crash data, even if no airbag was triggered, and a normal diagnostic tool cannot erase them. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting, are also possible.

Crash data stays in the memory until the repair removes it. An event without an airbag trigger is enough for this.

Aged electronic components and cold solder joints lose reliability over time. Moisture and corrosion disturb the contact at the plug connections.

Voltage spikes stress the electronics when the battery is weak or external power is connected.

How can you tell that the DS7T-14B321-CE is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears, the diagnostic tool does not connect to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not trigger.

The warning light is one of the clearest indicators a car provides. It reports a detected fault regardless of whether the vehicle is standing or driving.

If it does not go out after switching on the ignition, there is a fault that should be checked.

Which vehicles is the DS7T-14B321-CE fitted in?

The airbag control unit DS7T-14B321-CE is fitted in these vehicles: Ford Mondeo 5 ’13 (2014-2019) and 5 ’13 Facelift (2019-2022). The selection reflects the models in which this unit has been verified.

The vehicle list for this control unit follows for classification.

• Ford Mondeo 5 ’13 (2014-2019)
• Ford Mondeo 5 ’13 Facelift (2019-2022)

Compare the part number on the label of the removed unit with this page, so that you know for certain it is the right unit. Also have the fault memory read out beforehand, because only the result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 1S7T-14B056, 1S7T-14B056-BG, 2184427, 285010733, DS7T-14B321-BB.

How does the repair of the DS7T-14B321-CE work?

First have the fault memory read out and attach the log, then disconnect the battery and only then remove the control unit DS7T-14B321-CE. You create the repair order online and send in the packed unit. Testing, repair and the function test at Airbag24 usually take 3–4 working days.

Airbag24 tests the unit on the test bench and replaces defective components. The crash data is erased, a function test concludes the work, and then your own unit goes 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 DS7T-14B321-CE 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.

With the printed repair order in the parcel and the control unit packed shock-proof, the unit is well prepared.