Airbag control unit with part number A2C53398645

What does the airbag control unit A2C53398645 do?

The airbag control unit A2C53398645 controls the restraint system for Ford. It evaluates the signals from the crash sensors, decides within milliseconds in an accident whether to trigger, and continuously monitors the entire system. It shows faults via the airbag warning light.

In the background the unit continuously checks sensors, wiring and the trigger electronics. If it finds a deviation, it stores it in the fault memory.

After an accident the unit stores crash data and locks itself. The lock is lifted by the repair.

Why does the control unit A2C53398645 fail?

Crash data left in the memory after an accident is considered the most common cause, even if no airbag was triggered. Further causes lie in components, plug connections and the power supply of the control unit A2C53398645.

A normal diagnostic tool cannot erase this crash data. Airbag24 erases it as part of the repair.

The further causes at a glance:

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

How can you tell that the A2C53398645 is defective?

A defect in the A2C53398645 shows up as the airbag warning light in the instrument cluster, which lights up permanently or intermittently, and as fault messages in the instrument cluster. A missing connection between the diagnostic tool and the control unit, or a fault memory that cannot be cleared, also indicates it. Airbags and seatbelt pretensioners may then fail to deploy in an emergency.

The light reports the fault immediately as soon as the system detects it. Even when the vehicle drives normally, the electronics may report a fault in the background.

Please have such a notice checked promptly before you continue to use the vehicle.

Which vehicles is the A2C53398645 fitted in?

The control unit A2C53398645 is installed in these vehicles: Ford Ka 2 KA2 RU8 (2008-2016). The assignment is based on the details stored with us for this number.

The list in detail:

• Ford Ka 2 KA2 RU8 (2008-2016)

First compare the part number on the label of the removed unit with this page, so you have the correct unit. Before that, have the fault memory read out, because only this result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 51800461, 51805046, 51889814, 51889815, 51925901, 51925902.

How does the repair of the A2C53398645 work?

For the A2C53398645, first have the fault memory read out and attach the log to the unit. Then disconnect the battery before you remove the control unit. Next, create a repair order online and send the unit in well packed. Airbag24 usually needs 3–4 working days for testing, repairing and functional testing.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a functional test. Afterwards 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 A2C53398645 get to Airbag24?

You send the unit as a parcel, or you book a UPS collection for an extra charge. Airbag24 handles the return after the repair by UPS.

The printed repair order goes into the parcel, and the unit must be packed shockproof.