Airbag control unit with part number 68477641AA

What does the airbag control unit 68477641AA do?

The airbag control unit 68477641AA controls the restraint system (SRS) of Jeep. It evaluates crash sensors, decides within a few milliseconds during an impact whether airbags and seatbelt pretensioners are triggered, and monitors the entire system.

If the electronics detect a fault, it shows this via the airbag warning light.

After an accident the unit stores crash data and locks itself.

Why does the control unit 68477641AA fail?

The most common cause lies in crash data left in the unit after an accident, even if no airbag was triggered. Further causes are aged components, cold solder joints, moisture at the plug connections and voltage spikes, for example from a weak battery or jump-starting.

A normal diagnostic tool is not sufficient to remove crash data. It stays in the memory until Airbag24 erases it.

Further causes lie in the electronics or the contacts. Components age, solder joints can become cold, and moisture attacks the contacts. Only reading out the fault memory shows which cause is actually present.

How can you tell that the 68477641AA is defective?

A defect shows up at the airbag warning light, which stays on permanently or intermittently. In addition there are fault messages in the instrument cluster, no connection to the diagnostic tool and a fault memory that cannot be cleared.

The airbag warning light in the instrument cluster indicates the defect. As long as it persists, airbags and seatbelt pretensioners may not trigger in an emergency.

Whether a plug or the control unit itself is behind it is only clarified by diagnosis.

Which vehicles is the 68477641AA fitted in?

The 68477641AA is fitted in these vehicles: Jeep Wrangler JL (from 2018).

Below you can see which models are stored:

• Jeep Wrangler JL (from 2018)

Compare the part number on the label of the device with this page. This only confirms that it is the correct unit. Have the fault memory read out beforehand, because only this result shows whether the control unit is defective 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 68477641AA work?

Before you remove the control unit, have the fault memory read out and enclose the log. Then disconnect the battery. Online you create the repair order, then pack and send the unit. At Airbag24 processing usually takes 3–4 working days.

Afterwards Airbag24 checks the unit, repairs defective components, removes the crash data and tests the function.

Then 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 68477641AA get to Airbag24?

Either you send the unit as a parcel, or you book a UPS collection for an extra charge. Airbag24 returns the repaired unit to you by UPS.

The printed repair order goes into the parcel. Pack the unit shock-proof so that it is not damaged in transit.