Airbag control unit with part number P68185855AA

What does the airbag control unit P68185855AA do?

The airbag control unit P68185855AA controls the restraint system (SRS) in vehicles of the brand Jeep. It evaluates the signals from the crash sensors, decides within milliseconds in an emergency on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously. It reports faults via the airbag warning light.

After an accident the unit stores crash data and locks itself. In the vehicle it also manages the fault memory, in which faults are recorded.

Why does the control unit P68185855AA fail?

The most common cause of a failure of the control unit P68185855AA is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Other causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting.

Whether crash data is present in the unit only shows up during readout, because no airbag has to have deployed for it to be stored. Aged components and corrosion, by contrast, develop over a longer period.

Voltage spikes, on the other hand, stress the electronics suddenly. It is therefore worth checking the battery and the vehicle electrical system during the readout.

How can you tell that the P68185855AA is defective?

A fault in the P68185855AA shows up in the airbag warning light in the instrument cluster, which lights up permanently or intermittently, in an error message on the instrument cluster display, and in the diagnostic tool failing to establish a connection to the control unit.

A further sign is that the fault memory cannot be cleared; even after an attempt to clear it with the diagnostic tool, the entry remains. As long as such a fault exists, the airbags and seatbelt pretensioners may possibly not deploy in an emergency.

If the display disappears in between, that does not mean the cause has been eliminated.

Which vehicles is the P68185855AA fitted in?

For the brand Jeep the control unit P68185855AA is assigned. It is fitted in these vehicles: Jeep Wrangler JK (2007-2018).

The following vehicles are listed in our assignment of this part number:

• Jeep Wrangler JK (2007-2018)

Compare the part number on the label of the removed unit with this page; this only confirms that you have the right unit. Also have the fault memory read out, because only the log 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 P68185855AA work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit P68185855AA. Afterwards create a repair order online and send in the well-packed unit. At Airbag24, testing, repair and function test usually take 3–4 working days.

At Airbag24 the unit is checked on the test bench, defective components are repaired, stored crash data is erased and a function test is carried out. Afterwards your unit is returned to you.

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 P68185855AA get to Airbag24?

You send the control unit P68185855AA as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back to you by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.