Airbag control unit with part number P68185855AB

What does the airbag control unit P68185855AB do?

As the central evaluation unit, the airbag control unit P68185855AB controls the restraint system (SRS) for Jeep. In an accident it processes the sensor signals within milliseconds and decides which airbags and seatbelt pretensioners fire. It also monitors the system constantly and reports faults via the airbag warning light.

After an accident the unit stores crash data and locks itself. In the background, the electronics continuously check their connections to sensors and triggers.

That is why the electronics of the unit are the point where a repair starts.

Why does the control unit P68185855AB fail?

The most common cause with the P68185855AB: crash data stored after an accident, even without an airbag having fired, which cannot be erased with a normal diagnostic tool. Other causes are aged components, cold solder joints, moisture and corrosion at plug connections, as well as voltage peaks.

Crash data is created as soon as the unit registers an accident, regardless of whether an airbag has actually fired.

Cold solder joints can cause contact problems, and moisture attacks plug connections. Voltage peaks occur, for example, with a weak battery or with a jump start.

How can you tell that the P68185855AB is defective?

On the P68185855AB, the airbag warning light in the instrument cluster stays on permanently or intermittently. An error message appears, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be erased. In an emergency, airbags and seatbelt pretensioners may then not be able to deploy.

These signs reveal the defect, even if the vehicle keeps driving.

Write down the messages in the instrument cluster before you touch the control unit, so that the details are complete when the fault memory is read out.

Which vehicles is the P68185855AB fitted in?

Vehicles equipped with the control unit P68185855AB are these: Jeep Wrangler JK (2007-2018).

The assignment looks like this:

• Jeep Wrangler JK (2007-2018)

Comparing the part number on the label of the removed unit with this page only shows that you have the correct unit. Have the fault memory read out beforehand, because this log shows 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 68398609AB, P68003421AB.

How does the repair of the P68185855AB work?

First have the fault memory read out and attach the log. Then disconnect the battery and only afterwards remove the control unit P68185855AB. Finally create a repair order online and send in the well-packed unit.

Airbag24 examines it on the test bench, replaces defective components, deletes stored crash data and performs a function test. For processing at Airbag24, a duration of 3–4 working days generally applies.

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 P68185855AB get to Airbag24?

Handing the P68185855AB over to Airbag24 happens by parcel shipping or by a UPS collection that can be booked for an extra charge.

You enclose the printed repair order with the parcel; pack the unit shock-proof. The return after the repair is made by UPS.