Airbag control unit with part number 52052831

What does the airbag control unit 52052831 do?

The airbag control unit 52052831 controls the restraint system (SRS) of Chrysler. It receives the messages from the crash sensors and determines within milliseconds which airbags and seatbelt pretensioners are triggered. After a crash, it stores crash data and locks itself.

During operation the unit checks sensors, wiring and firing circuits continuously. If it finds a deviation, it writes it into the fault memory and switches on the airbag warning light.

The task is clearly defined: it watches in the background, and in an accident it must decide without hesitation.

Why does the control unit 52052831 fail?

With 52052831, the most common cause is crash data stored after an accident, even if no airbag has fired. A normal diagnostic tool does not erase them. Other causes include aged components, cold solder joints, moisture at plugs and voltage spikes.

Crash data remain in the unit until they are removed during the repair. Airbag24 takes exactly this step.

The other causes concern electronics and connections. Solder joints on the circuit board can give way over time, corrosion attacks plugs, and voltage spikes arise, for example when starting with jump leads.

How can you tell that the 52052831 is defective?

Typical signs of a defect on the 52052831 are an airbag warning light in the instrument cluster that lights permanently or intermittently, and a fault message in the instrument cluster. Added to this are a diagnostic tool without connection to the control unit and a fault memory that cannot be cleared.

Then airbags and seatbelt pretensioners may not deploy in an emergency. Such a finding therefore requires a prompt check.

• warning light that lights constantly or intermittently
• message in the instrument cluster
• no contact between diagnostic tool and control unit
• fault memory that cannot be emptied

Which vehicles is the 52052831 fitted in?

The control unit 52052831 is fitted in these vehicles: Chrysler Ypsilon 846 (2011-2015).

The make alone does not decide. Model year, equipment and engine variant must match as well.

The assignment in detail:

• Chrysler Ypsilon 846 (2011-2015)

Compare the number on the label of the removed unit with this page. That shows you whether it is the right unit, and nothing more. Whether the control unit is defective or a plug or cable is the cause can only be established by the fault memory, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 51833230, 51939105.

How does the repair of the 52052831 work?

First comes the fault memory, which you have read out. Then disconnect the battery, remove the control unit 52052831 and create a repair order online. The duration at Airbag24 is usually 3–4 working days.

The protocol belongs to the unit later. At Airbag24 the control unit is checked on the test bench, defective components are replaced, the crash data are erased and a function test follows.

Afterwards your own unit goes back to you. The order of steps is to be observed for safety reasons. 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 52052831 get to Airbag24?

The control unit 52052831 goes off as a parcel, alternatively you have it collected by UPS for an extra charge. The return is likewise by UPS.

Put the printed repair order into the parcel. Pack the unit shock-proof.