Airbag control unit with part number 68402852AA

What does the airbag control unit 68402852AA do?

The airbag control unit 68402852AA belongs to the restraint system (SRS) of Jeep and determines in an accident which airbags and seatbelt pretensioners deploy. To do this it reads out the crash sensors, which record accelerations within milliseconds.

The unit also monitors the entire system continuously and reports faults via the airbag warning light. After an accident it stores crash data and locks itself.

Why does the control unit 68402852AA fail?

Stored crash data is the most common cause, even if no airbag deployed in the accident. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes such as with a weak battery or a jump start also come into question. Airbag24 erases the crash data during the repair.

A normal diagnostic tool cannot erase this data, even if the vehicle drives again after the accident.

The other causes lie in the electronics themselves. Components age, solder joints can go cold, and moisture attacks plug connections.

Voltage spikes additionally stress the circuits.

How can you tell that the 68402852AA is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, and an error message may appear in the instrument cluster as well. Additionally the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

A fault therefore shows itself in several places at once, and each of these indications deserves attention. Whether the light goes out after starting or stays on permanently helps with the first assessment.

With such a finding, airbags and seatbelt pretensioners may fail to deploy in an emergency. The fact that the car drives is therefore no proof that everything is in order.

Which vehicles is the 68402852AA fitted in?

The 68402852AA is fitted in these Jeep vehicles: Jeep Compass MP (2016-2020) and MP Facelift (from 2020). The details come from our assignment for this part number.

You will find the vehicles from this assignment listed below.

• Jeep Compass MP (2016-2020)
• Jeep Compass MP Facelift (from 2020)

Compare the part number on the label of the removed unit with this page. Then you know that you have the right unit. Before removal, have the fault memory read out, because only this log 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 A2C13501200.

How does the repair of the 68402852AA work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit 68402852AA. Airbag24 needs 3–4 working days for inspecting, repairing and testing.

Then create a repair order online and send the well-packed unit.

At Airbag24 the unit is inspected on the test bench, defective components are replaced, stored crash data is erased and a function test is run. This time applies only to the work at Airbag24, not to your steps or the shipping.

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 68402852AA get to Airbag24?

You send the control unit 68402852AA as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back by UPS.

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