Airbag control unit with part number P68185858AA

What does the airbag control unit P68185858AA do?

The airbag control unit P68185858AA coordinates the restraint system (SRS) in Jeep. It checks the signals from the crash sensors and, in an accident, triggers the appropriate airbags and seatbelt pretensioners within milliseconds. After an accident it stores crash data and locks itself.

Outside an accident, monitoring runs constantly. If the electronics detect a fault, they switch on the airbag warning light in the instrument cluster.

This keeps the state of the system traceable at all times, including for a workshop that reads the unit out later.

Why does the control unit P68185858AA fail?

Stored crash data are the most common cause in the control unit P68185858AA, namely after an accident, even if no airbag has deployed. Also contributing are aged electronics, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

A normal diagnostic tool cannot remove this crash data. Airbag24 erases it during the repair, so the unit works fully again afterwards.

The other causes are everyday effects on the electronics. Components age, solder joints can go cold, and moisture causes corrosion on connectors. Short voltage spikes, for example from a weak battery or from jump-starting, also stress the unit.

How can you tell that the P68185858AA is defective?

A defect in the control unit P68185858AA shows itself in four signs: the airbag warning light in the instrument cluster, an error message, a missing connection to the diagnostic tool and a fault memory that cannot be cleared. Then airbags and seatbelt pretensioners may not deploy in an emergency.

• The airbag warning light in the instrument cluster lights up permanently or intermittently.
• The instrument cluster shows an error message.
• The diagnostic tool cannot connect to the control unit.
• The fault memory cannot be cleared.

Which vehicles is the P68185858AA fitted in?

The control unit P68185858AA is fitted in vehicles from Jeep. The models in which it occurs are: Jeep Wrangler JK (2007-2018).

The following vehicles are recorded for this part number:

• Jeep Wrangler JK (2007-2018)

Check first whether the part number on the label of the removed unit matches this page. This only ensures that it is the correct unit. Also have the fault memory read out before doing anything else, because only the log shows whether the control unit itself 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 P68185858AA work?

First have the fault memory read out and attach the log. Then disconnect the battery, and only after that remove the control unit. Then create a repair order online and send the unit in, well packed.

Airbag24 tests the unit on the test bench and repairs defective components. Stored crash data are erased, followed by a functional test. Processing at Airbag24 takes 3–4 working days as a rule, and this time covers only this work.

Afterwards you receive your own, repaired unit back.

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 P68185858AA get to Airbag24?

You send the control unit P68185858AA as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 returns it via UPS.

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