Airbag control unit with part number 52027191

What does the airbag control unit 52027191 do?

The airbag control unit 52027191 is the central control unit of the restraint system (SRS) for Ford. It evaluates the crash sensors, decides within milliseconds in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

It reports faults via the airbag warning light in the instrument cluster.

After an accident it stores crash data and locks itself.

Why does the control unit 52027191 fail?

Stored crash data after an accident is the most common cause, even if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes. With this control unit, erasing the crash data is often not possible. If you would like it erased, get in touch with Airbag24 briefly before sending the unit in, and Airbag24 will then check the part number.

Crash data remains in memory after an accident, even if no airbag has deployed.

The other causes arise over time or through external influences. Moisture and corrosion attack plug connections, cold solder joints disrupt the contact, and voltage spikes, for example from a weak battery or a jump start, put strain on the electronics.

How can you tell that the 52027191 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, a fault message appears, or the diagnostic tool cannot find the control unit. A fault memory that cannot be cleared also belongs to these signs. In that case airbags and seatbelt pretensioners may not deploy in an emergency.

A warning light that stays on is a clear signal and not a minor matter.

A prompt clarification therefore makes sense, even if the vehicle otherwise seems unremarkable.

Which vehicles is the 52027191 fitted in?

The 52027191 is fitted in these vehicles: Ford Ka 2 KA2 RU8 (2008-2016).

The list names the vehicles that are assigned to this part number:

• Ford Ka 2 KA2 RU8 (2008-2016)

First compare the part number on the label of the removed unit with this page, as that only confirms that you have the right unit. Also have the fault memory read out beforehand. 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 51805046, 51889815, 51925901, 51925902, A2C30469900, A2C30470000.

How does the repair of the 52027191 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only afterwards remove the control unit. Create a repair order online and send the unit in well packed. If you would like the crash data erased, get in touch with Airbag24 briefly before sending the unit in.

This order is mandatory for safety reasons.

Then pack the unit well and send it in.

Airbag24 checks the unit on the test bench, replaces defective components and carries out a function test.

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 52027191 get to Airbag24?

You send the unit 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 in the parcel and pack the unit shockproof.