Airbag control unit with part number P68185858AB

What does the airbag control unit P68185858AB do?

The airbag control unit P68185858AB controls the restraint system (SRS) for Jeep. It analyses the crash sensors, determines in a crash within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports faults to the airbag warning light.

Its decisions are based on the measurements of the sensors distributed throughout the vehicle.

A crash causes the control unit to store crash data and lock itself.

Why does the control unit P68185858AB fail?

The most common cause is crash data stored from an earlier accident, even if no airbag has deployed. Other causes are aged components, cold solder joints, moisture and corrosion at plugs, as well as voltage spikes, for example from a weak battery or jump-starting.

Stored crash data cannot be erased with a usual diagnostic tool.

Airbag24 erases it during the repair as a fixed part of the process.

The other causes act on the electronics. Ageing, cold solder joints and moisture affect the circuit board and the plugs, while voltage spikes additionally stress the electronics.

How can you tell that the P68185858AB is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears in the instrument cluster. In addition the diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The warning light exists to alert you to the fault, and it does so reliably as soon as the system detects it. So if the warning light is on, do not wait but have the system checked.

Which vehicles is the P68185858AB fitted in?

The control unit P68185858AB is fitted in these vehicles: Jeep Wrangler JK (2007-2018). Whether your vehicle is affected can be read from the part number of the removed unit.

In detail, we list the vehicles as follows:

• Jeep Wrangler JK (2007-2018)

When removing the unit, comparing the part number on the label with this page helps first, and then the fault memory. The comparison only ensures that it is the right unit. Only the readout shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 68398609AB, P68003421AB.

How does the repair of the P68185858AB work?

Have the fault memory read out first and enclose the log with the parcel. Then disconnect the battery and remove the control unit; afterwards create a repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 tests the unit on the test bench, replaces defective components, erases crash data and carries out a function test. Then your own unit comes back to you.

The steps on your side follow a fixed order: the control unit may only be removed once the battery has been disconnected.

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 P68185858AB get to Airbag24?

You send the control unit to Airbag24 as a parcel, or you book a UPS collection for an extra charge. The return after the repair is made by UPS.

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