Airbag control unit with part number 68453074AC

What does the airbag control unit 68453074AC do?

The airbag control unit 68453074AC controls the restraint system (SRS) for Chrysler. It evaluates the crash sensors, decides within milliseconds in the event of an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It shows detected faults via the airbag warning light.

Monitoring covers the sensors, the wiring and the function of the unit itself. It stores any faults it finds in the fault memory.

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

Why does the control unit 68453074AC fail?

The most common cause for the 68453074AC is crash data stored after an accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Other causes include aged components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes from the vehicle electrical system.

The repair includes erasing the crash data.

Aged components and cold solder joints are sources of faults in their own right. Moisture and corrosion affect plug connectors, and voltage spikes occur, for example, with a weak battery or a jump start.

How can you tell that the 68453074AC is defective?

If the 68453074AC is defective, the airbag warning light in the instrument cluster lights up permanently or intermittently. Error messages in the instrument cluster, no connection between the diagnostic tool and the control unit, or a fault memory that cannot be cleared may also occur. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

This warning light is the central warning sign of the system. Have the fault checked promptly, even if the light comes on only intermittently.

If the fault memory cannot be emptied, a detailed examination is advisable.

Which vehicles is the 68453074AC fitted in?

The control unit 68453074AC is fitted in these vehicles: Chrysler Pacifica RU Facelift (from 2020) and RU (2016-2020).

The following vehicles are on record for this part number:

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

Compare the part number on the label with this page to make sure that you have the correct unit. Have the fault memory read out before you remove the control unit; the 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 68405565AB, 68405565AC, 68405567AC, 68405937AA, 68405939AA, 68480707AC.

How does the repair of the 68453074AC work?

First have the fault memory read out and attach the log. Then disconnect the battery, and only after that remove the control unit. Next, create a repair order online and send the unit well packed. Airbag24 checks the unit, repairs defective components and erases the crash data.

At Airbag24 a functional test follows; processing usually takes 3–4 working days. This time covers only the checking, repairing and testing.

Your own unit is then 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 68453074AC get to Airbag24?

You send the control unit 68453074AC as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

Put the printed repair order in the parcel and pack the unit shockproof.