Airbag control unit with part number 68621938AG

What does the airbag control unit 68621938AG do?

The airbag control unit 68621938AG is the central control unit of the restraint system (SRS) for Jeep. It evaluates the signals from the crash sensors, decides within milliseconds in the event of an accident which airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The unit detects faults itself and reports them via the airbag warning light in the instrument cluster. This keeps the state of the system visible to you in everyday driving.

After an accident the control unit stores crash data and locks itself. Only a repair lifts this lock.

Why does the control unit 68621938AG fail?

Stored crash data is the most common cause: it remains in the unit after an accident, even if no airbag has deployed, and a normal diagnostic tool cannot remove it. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes.

The crash data records the impact and remains even when the vehicle shows little or no external damage.

The other causes develop over a longer period. Moisture and corrosion attack the contacts, while voltage spikes occur suddenly and load the electronics.

How can you tell that the 68621938AG is defective?

A defect shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently, as an error message in the instrument cluster, as a diagnostic tool without connection to the control unit, or as a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not deploy.

If the warning light is on, have the system checked promptly. The light reports a fault that persists until it is rectified.

A diagnostic tool without a connection to the control unit is also one of the signs you should watch for.

Which vehicles is the 68621938AG fitted in?

This part number is linked to vehicles in our records. The control unit 68621938AG is fitted in these vehicles: Jeep Wrangler JL (from 2018).

The list shows the assignment as it is stored with us.

• Jeep Wrangler JL (from 2018)

Compare the part number on the label of the removed unit with this page. This only confirms that it is the correct unit. Also have the fault memory read out beforehand, because only this result 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 68621938AG work?

First read out the fault memory and enclose the log. Then disconnect the battery, remove the control unit and create a repair order online. Next, send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days, during which the unit is checked, components are replaced, the crash data is deleted and a function test is carried out.

This deadline applies exclusively to checking, repairing and testing at Airbag24. After that, your own 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 68621938AG get to Airbag24?

You send the control unit 68621938AG in 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 in the parcel. Pack the unit shockproof so that it is not damaged in transit.