Airbag control unit with part number 52151822

What does the airbag control unit 52151822 do?

The airbag control unit 52151822 is the central unit of the restraint system (SRS) for Jeep. It evaluates the crash sensors, decides in an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The manufacturer number Bosch 0285015431 is also printed on the housing.

If the system detects a fault, the airbag warning light in the instrument cluster lights up. After an accident the unit stores crash data and locks itself.

Why does the control unit 52151822 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes are also possible causes.

Crash data cannot be erased with a normal diagnostic tool until it is erased during the repair. Until then it remains in the memory of the unit.

Voltage spikes occur, for example, with a weak battery or during a jump start. Only the test shows which of these causes applies in an individual case.

How can you tell that the 52151822 is defective?

The airbag warning light in the instrument cluster stays on permanently or lights up only intermittently. Further indications are an error message in the instrument cluster, a missing contact with the diagnostic tool and a fault memory that cannot be cleared.

Such a finding means that airbags and seatbelt pretensioners may not trigger in an emergency. That is why it is worth having the system checked without delay.

Which vehicles is the 52151822 fitted in?

The control unit 52151822 is fitted in these vehicles: Jeep Renegade BU Facelift (from 2018) and BU (2014-2018).

The list shows in detail which vehicles the number applies to.

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

Comparing the part number on the label of the removed unit with this page only ensures that it is the right unit. Whether the control unit is defective, or whether a plug or cable is the cause, is shown only when the fault memory is read out. Plan this reading before removal.

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

How does the repair of the 52151822 work?

The process begins with having the fault memory read out and attaching the log, before you disconnect the battery. Then you create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is examined on the test bench. Defective components are repaired, crash data is erased and a functional test is carried out.

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 52151822 get to Airbag24?

You send the unit either as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you via UPS.

Packed shock-resistant, the unit goes into the parcel together with the printed repair order.