Airbag control unit with part number 68238840AH

What does the airbag control unit 68238840AH do?

The airbag control unit 68238840AH is the central control unit of the SRS restraint system for Chrysler. It evaluates the signals from the crash sensors and decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered. It also monitors the system continuously and reports faults via the warning light.

During operation the unit constantly checks sensors, wiring and output stages, so that everything is ready in an emergency.

After an accident it stores crash data and locks itself.

Why does the control unit 68238840AH fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed; it cannot be erased with a normal diagnostic tool. Other triggers generally include aged components, corrosion at plug connections, cold solder joints and voltage spikes.

The causes can only be narrowed down on the unit after readout. The remaining points at a glance:

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes from a weak battery or a jump start

How can you tell that the 68238840AH is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears in the instrument cluster. In addition, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be erased.

With a defect, airbags and seatbelt pretensioners may not deploy in an emergency. The warning must therefore be taken seriously and needs checking, even if the car otherwise drives without any problems.

Only the fault memory can clarify whether the control unit itself is affected. The light shows the finding, not the cause.

Which vehicles is the 68238840AH fitted in?

The part number belongs to the vehicles listed. The airbag control unit 68238840AH is fitted in these vehicles: Chrysler Pacifica RU Facelift (from 2020) and RU (2016-2020).

The list shows these vehicles:

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

Compare the part number on the label of the removed control unit with this page; this only confirms that it is the right unit. Also have the fault memory read out beforehand, because this result alone 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 68405565AB, 68405565AC, 68405567AC, 68405937AA, 68405939AA, 68480707AC.

How does the repair of the 68238840AH work?

First have the fault memory read out and attach the log before you disconnect the battery. Only then remove the control unit and create a repair order online, with which you send in the well-packed unit.

Processing at Airbag24 usually takes 3–4 working days. The unit is checked on the test bench, defective components are repaired, the stored crash data is erased and a function test follows. Afterwards your own unit comes back 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 68238840AH get to Airbag24?

Either the unit comes to Airbag24 as a parcel, or UPS collects it from you for an extra charge. It goes back to you by UPS after the repair.

The printed repair order must go in the parcel, and the unit must be packed shockproof.