Airbag control unit with part number 52115622

What does the airbag control unit 52115622 do?

The airbag control unit 52115622 is the central control unit of the restraint system (SRS) for Jeep. It evaluates the crash sensors, determines in a crash within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The manufacturer number Bosch 0285014642 is also printed on the housing, which clearly identifies the unit.

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

Why does the control unit 52115622 fail?

The most common cause is crash data stored after an accident, even if no airbag has been triggered; a normal diagnostic tool cannot erase it. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

An accident leaves crash data in the unit, even if the impact was slight and no airbag was triggered. A standard diagnostic tool cannot remove this data.

Aged components and cold solder joints impair the function over time. Their effect may become noticeable only when the electronics are under load.

Moisture and corrosion at the plugs lead to changing contact. Voltage spikes, for example from a weak battery or a jump-start, additionally stress the circuitry.

How can you tell that the 52115622 is defective?

You can recognise a defect in the 52115622 by the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Also present may be a fault message in the instrument cluster, no connection from the diagnostic tool to the control unit, and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may fail to deploy.

The signs are listed individually below:

• The airbag warning light stays on permanently or lights up intermittently.
• A fault message appears in the instrument cluster.
• The diagnostic tool does not find the control unit.
• The fault memory cannot be cleared.

Each of these signs is a reason to have the system checked by a specialist.

Which vehicles is the 52115622 fitted in?

The 52115622 is fitted in these vehicles: Jeep Renegade BU Facelift (from 2018) and BU (2014-2018). You can check whether your vehicle is among them from the details in the registration document.

The vehicle list at a glance:

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

Before removal, there are important steps to take. (a) Comparing the part number on the label with this page only confirms the right unit. (b) Having the fault memory read out beforehand clarifies whether the control unit is defective or whether a plug 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 52115622 work?

Processing at Airbag24 usually takes 3–4 working days. Beforehand, have the fault memory read out, attach the log, disconnect the battery, remove the control unit and create the repair order online before you send it in.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Afterwards, the unit goes back to you.

This time applies to the work at Airbag24 alone, not to your steps or to shipping.

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 52115622 get to Airbag24?

You send the control unit 52115622 to Airbag24 as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

The printed repair order belongs in the parcel, and the unit should be packed shock-proof.