Airbag control unit with part number 52052644

What does the airbag control unit 52052644 do?

In the Jeep vehicle, the airbag control unit 52052644 forms the central unit of the restraint system (SRS). It evaluates the signals from the crash sensors, determines within milliseconds in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident, it stores crash data and locks itself.

The monitoring runs in the background without interruption. If the unit detects a fault, the airbag warning light appears in the instrument cluster.

The manufacturer number Bosch 0285013886 is also printed on the housing, which helps when comparing it with the label.

Why does the control unit 52052644 fail?

Stored crash data from an accident most often causes faults in the 52052644, even if no airbag has deployed. The repair at Airbag24 erases this data. Other causes are aging electronic components, moisture at the connectors, voltage spikes and cold solder joints.

Crash data is a record of the event stored in the unit itself. An ordinary diagnostic tool cannot remove it.

The other causes lie in the electronics and their surroundings: components age, solder joints can be cold, moisture and corrosion attack the connectors, and voltage spikes from a weak battery or jump-starting stress the circuit.

How can you tell that the 52052644 is defective?

The airbag warning light in the instrument cluster indicates the defect in the 52052644: it lights up permanently or intermittently, and a fault message appears in the instrument cluster as well.

• Airbag warning light stays on permanently
• Airbag warning light only comes on intermittently
• Fault message in the instrument cluster
• Diagnostic tool cannot connect to the control unit
• Fault memory remains and cannot be erased

Together, these signs indicate a fault in the restraint system.

In an emergency, airbags and seatbelt pretensioners may therefore fail to deploy.

Which vehicles is the 52052644 fitted in?

Only the read-out of the fault memory shows whether the unit is defective. The airbag control unit 52052644 is fitted in these vehicles: Jeep Renegade BU Facelift (from 2018) and BU (2014-2018).

The vehicle models with this unit follow as a list:

• Jeep Renegade BU Facelift (from 2018)
• Jeep Renegade BU (2014-2018)

First, compare the part number on the label of the removed unit with this page; this only ensures that it is the right unit. Second, have the fault memory read out in advance, because only that shows whether the control unit itself is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 52042475, 52061844, 68256081AA, 68256081AB.

How does the repair of the 52052644 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit 52052644. Next, create a repair order online and pack the unit carefully; then it goes to Airbag24.

There, Airbag24 tests the unit, repairs defective components, erases the crash data and tests the function.

Processing at Airbag24 usually takes 3–4 working days. The sequence at the start must 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 52052644 get to Airbag24?

You send the control unit 52052644 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

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