Airbag control unit with part number 52029749 0285013184

What does the airbag control unit 52029749 0285013184 do?

The airbag control unit 52029749 0285013184 is the central element of the restraint system in Fiat. It evaluates the signals from the crash sensors, decides within milliseconds which airbags and seatbelt pretensioners to trigger, and monitors the entire system. After an accident it stores crash data and locks itself.

The monitoring runs throughout the whole journey, and the unit indicates faults via the warning light.

Why does the control unit 52029749 0285013184 fail?

The most common cause is crash data from an accident, even without an airbag having been deployed. Further causes are ageing of the electronics, cold solder joints, moisture and corrosion, as well as voltage spikes. Airbag24 erases the crash data during the repair.

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

Crash data cannot be removed with a standard diagnostic tool.

How can you tell that the 52029749 0285013184 is defective?

The airbag warning light in the instrument cluster indicates the defect by lighting up permanently or intermittently. In addition a fault message appears, the diagnostic tool finds no contact with the control unit, and the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then not deploy in an emergency.

Pay attention to this warning light, because it comes directly from the electronics and is not a guess. Have the fault looked at promptly before you rely on the system.

Which vehicles is the 52029749 0285013184 fitted in?

The control unit 52029749 0285013184 is fitted in these vehicles: Fiat 500X 334 (2015-2018), 334 Facelift (2018-2022) and 334 Facelift (2022-2024).

The overview covers the vehicles for which we hold records for this part number.

• Fiat 500X 334 (2015-2018)
• Fiat 500X 334 Facelift (2018-2022)
• Fiat 500X 334 Facelift (2022-2024)

Compare the part number on the label of the removed unit with this page. That only confirms that it is the right unit. Have the fault memory read out beforehand, because only the log shows whether the control unit itself 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 285011845, 51935304.

How does the repair of the 52029749 0285013184 work?

The process begins with reading out the fault memory and attaching the log. Then you disconnect the battery and remove the control unit; after that you create a repair order online. Processing at Airbag24 usually takes 3–4 working days.

The removal only takes place once the battery is disconnected, because safety comes first with the airbag system.

Airbag24 checks the control unit on the test bench, repairs the affected components, erases the stored crash data and carries out a function test. The processing time covers exclusively this work at Airbag24.

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 52029749 0285013184 get to Airbag24?

You send the control unit 52029749 0285013184 as a parcel or book UPS collection for an extra charge. After processing, Airbag24 sends the repaired unit back to you by UPS.

Include the printed repair order in the parcel. Pack the unit shock-proof.