Airbag control unit with part number 52115352

What does the airbag control unit 52115352 do?

The airbag control unit 52115352 forms the central control unit of the restraint system (SRS) for Fiat. It evaluates the crash sensors, decides in an accident within milliseconds about the triggering of airbags and seatbelt pretensioners, and monitors the system continuously.

The unit reports faults via the airbag warning light in the instrument cluster. After an accident it stores crash data and locks itself.

The manufacturer number Bosch 0285015027 is additionally printed on the housing. This number serves to match the unit and says nothing about its function.

Why does the control unit 52115352 fail?

The most common cause of a fault on the 52115352 is crash data stored after an accident, even if no airbag was deployed. Other causes generally come into consideration, such as ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The further causes that come into question in detail are:

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

A normal diagnostic tool cannot erase crash data. Airbag24 erases them during repair.

How can you tell that the 52115352 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently on the 52115352. If an error message also appears, the diagnostic tool has no connection to the control unit, or the fault memory cannot be cleared, this is a clear sign of a defect.

The warning light indicates the fault as soon as the control unit detects it. As long as it is lit, airbags and seatbelt pretensioners may fail to deploy in an emergency.

Typical signs at a glance:

• airbag warning light in the instrument cluster, permanently or intermittently
• error message in the instrument cluster
• no connection between diagnostic tool and control unit
• fault memory cannot be cleared

Which vehicles is the 52115352 fitted in?

The 52115352 is fitted in these vehicles: Fiat 500 312 (2007-2024).

This overview shows the models assigned to this part number:

• Fiat 500 312 (2007-2024)

Comparing the part number on the label of the removed unit with this page only shows that it is the right unit. Whether it is defective or whether a plug or cable is the cause is shown only by the fault memory read out. Therefore have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 51782985, 51870005, 51897810, 51918659, 51963734, 519637734.

How does the repair of the 52115352 work?

For the repair of the 52115352, you first read out the fault memory, enclose the log, disconnect the battery and only then remove the control unit. Processing at Airbag24 takes 3–4 working days.

Afterwards you create a repair order online and pack the unit well before sending it in. Airbag24 checks it on the test bench, repairs defective components, erases stored crash data and carries out a function test.

Afterwards 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 52115352 get to Airbag24?

You send the control unit 52115352 in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns its own unit by UPS.

Put the printed repair order into the parcel and pack the control unit shock-proof.