Airbag control unit with part number 52157722

What does the airbag control unit 52157722 do?

The airbag control unit 52157722 controls the restraint system (SRS) in Fiat vehicles. It evaluates the signals from the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered. After an accident, it stores crash data and locks itself.

The system monitors its own function continuously. If it detects a fault, it reports it via the airbag warning light in the instrument cluster.

Why does the control unit 52157722 fail?

After an accident, stored crash data are regarded as the most common cause for the 52157722, even if no airbag has triggered; other possible causes include aged components, moisture and voltage spikes. With this control unit, deleting the crash data is often not possible; if you want it deleted, get in touch with Airbag24 briefly before sending the unit in.

The other causes are:

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

A normal diagnostic tool cannot delete crash data. Which cause applies is established by the examination.

How can you tell that the 52157722 is defective?

A defect in the 52157722 shows up as an airbag warning light in the instrument cluster that stays on permanently or intermittently. A fault message in the instrument cluster and a fault memory that cannot be cleared also indicate a defect.

These signs indicate a defect:

• Airbag warning light on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool without a connection to the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may possibly not deploy. Have the indication checked promptly.

Which vehicles is the 52157722 fitted in?

The control unit 52157722 is fitted in these vehicles: Fiat Tipo 356 (2016-2020). You carry out the comparison with your vehicle using the part number on the removed unit.

These vehicles are on record for this control unit:

• Fiat Tipo 356 (2016-2020)

Compare the part number on the label of the removed unit with this page. This only confirms that you have the correct unit. Also have the fault memory read out beforehand, as only that result shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 00052027042, 00052055639, 00052055640, 00052055641, 00052058730, 00052078052.

How does the repair of the 52157722 work?

When repairing the 52157722, you first read out the fault memory, attach the log, disconnect the battery and only then remove the control unit. Processing at Airbag24 usually takes 3–4 working days.

Afterwards, create a repair order online and pack the unit well before sending it in. If you want the crash data deleted, get in touch with Airbag24 briefly before sending the unit in.

Airbag24 checks the unit on the test bench, replaces defective components and runs a functional test. After that, you receive your own, repaired unit back.

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 52157722 get to Airbag24?

You send the control unit 52157722 in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

You place the printed repair order in the parcel and pack the unit shock-resistant.