Airbag control unit with part number 68398606AB

What does the airbag control unit 68398606AB do?

The airbag control unit 68398606AB is the central control unit of the restraint system (SRS) in the Jeep. It evaluates the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

Between accidents it monitors the wiring and all connected components. If it detects a fault, it displays this via the airbag warning light in the instrument cluster.

After an accident it stores crash data and is locked afterwards.

Why does the control unit 68398606AB fail?

The cause is most often found in crash data stored after an accident, even if no airbag has deployed. Ageing components, moisture or voltage spikes can also cause the failure.

A normal diagnostic tool cannot erase these entries. The other causes at a glance:

• ageing electronic components
• cold solder joints
• moisture and corrosion on plug connections
• voltage spikes, for example from a weak battery or jump-starting

How can you tell that the 68398606AB is defective?

A defect shows up as the airbag warning light, which stays on permanently or intermittently. Accompanying this may be fault messages, connection problems with the diagnostic tool, or a fault memory that cannot be cleared.

As long as this fault exists, airbags and seatbelt pretensioners may fail to trigger in an emergency. The warning light is therefore a warning sign that you should have clarified promptly.

Which vehicles is the 68398606AB fitted in?

The 68398606AB is fitted in these vehicles: Jeep Wrangler JL (from 2018).

The list of models and series is here:

• Jeep Wrangler JL (from 2018)

Comparing the part number on the label of the removed unit with this page only ensures that you have the right unit in front of you. Have the fault memory read out beforehand: only this log shows whether the control unit is defective or whether a plug or a 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 68398606AB work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Afterwards create a repair order online and send in the well-packed unit. Testing, repairing and checking at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, renews defective components, erases the stored crash data and carries out a function test. Afterwards your own unit is returned to you.

The order of the first steps serves your safety. 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 68398606AB get to Airbag24?

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

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