Airbag control unit with part number 68358974AC

What does the airbag control unit 68358974AC do?

The airbag control unit 68358974AC is the central control unit of the restraint system (SRS) in Chrysler. It evaluates signals from the crash sensors, determines in a crash within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After a crash it stores crash data and locks itself.

The unit shows faults via the airbag warning light in the instrument cluster. Monitoring runs in the background.

In the vehicle, the control unit works together with sensors, wiring and display. A fault in one of these parts can therefore become visible in the control unit.

Why does the control unit 68358974AC fail?

For the control unit 68358974AC, the most common cause is stored crash data after an accident, even if no airbag has deployed. A standard diagnostic tool cannot delete this data. Aged components, cold solder joints, moisture and voltage peaks are also possible causes.

The following points are involved:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connectors
• voltage peaks, for example from a weak battery or jump-starting

How can you tell that the 68358974AC is defective?

With a defect on the 68358974AC, the airbag warning light in the instrument cluster stays on permanently or intermittently, and a fault message appears in the instrument cluster. The diagnostic tool then finds no connection to the control unit, and the fault memory cannot be cleared. In a real crash, airbags and seatbelt pretensioners may then fail to deploy.

The light is the sign that the system has detected a fault. The cause is only identified by checking the fault memory.

Which vehicles is the 68358974AC fitted in?

The control unit 68358974AC is fitted in: Chrysler Pacifica RU Facelift (from 2020) and RU (2016-2020).

The vehicles to which this part number is assigned are listed below.

• Chrysler Pacifica RU Facelift (from 2020)
• Chrysler Pacifica RU (2016-2020)

Comparing the part number on the label of the removed unit with this page only shows that you have the right unit. Whether the control unit is actually defective or a plug or wire is causing the fault is only shown by reading out the fault memory beforehand.

For the same vehicles, we also repair control units with the part numbers 68405565AB, 68405565AC, 68405567AC, 68405937AA, 68405939AA, 68480707AC.

How does the repair of the 68358974AC work?

Have the fault memory read out first and enclose the log. Then disconnect the battery and only afterwards remove the control unit 68358974AC. Next, create a repair order online and send in the well-packed unit.

At Airbag24, the team checks the unit on the test bench, replaces defective components, deletes stored crash data and carries out a function test. You then receive your own unit back. Processing at Airbag24 usually takes 3–4 working days.

The sequence of steps is fixed for safety reasons. 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 68358974AC get to Airbag24?

You send the control unit 68358974AC to Airbag24 as a parcel or book a UPS collection for an extra charge. Airbag24 then sends the repaired unit back to you by UPS.

Put the printed repair order into the parcel, and pack the unit shockproof so that it survives shipping undamaged.