Airbag control unit with part number 68402852AD

What does the airbag control unit 68402852AD do?

The airbag control unit 68402852AD is the central control unit of the restraint system (SRS) for Jeep. It evaluates the signals from the crash sensors, decides within milliseconds in the event of an accident which airbags and seatbelt pretensioners to trigger, and monitors the system continuously. After an accident, it stores crash data and locks itself.

The unit reports faults in the restraint system via the airbag warning light in the instrument cluster. Monitoring runs continuously, even when the vehicle is parked.

Because the unit directly controls the airbags and seatbelt pretensioners, any fault affects the entire protection system.

Why does the control unit 68402852AD fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

The crash data stays in the unit until it is erased. A diagnostic tool can find the entry but cannot remove it.

Aged electronic components, cold solder joints and corrosion develop over time. Moisture accelerates this process at the contacts.

How can you tell that the 68402852AD is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears in the instrument cluster, the diagnostic tool cannot connect to the control unit, or the fault memory cannot be cleared. In that case, airbags and seatbelt pretensioners may not deploy in an emergency.

• Airbag warning light stays on permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool cannot connect to the control unit
• Fault memory cannot be cleared

The warning light is the direct indication in the vehicle. If these signs appear, have the restraint system checked.

Which vehicles is the 68402852AD fitted in?

The airbag control unit 68402852AD is fitted in these vehicles: Jeep Compass MP (2016-2020) and MP Facelift (from 2020).

The list shows the vehicles recorded for this part number.

• 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. This only confirms that it is the correct unit. Have the fault memory read out first, because only that result shows whether the control unit is defective or whether a connector 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 68402852AD work?

First have the fault memory read out and attach the log. Then disconnect the battery, only then remove the control unit 68402852AD, and create a repair order online. Send the unit in well packed.

This sequence is for your safety and is therefore mandatory. Removal only begins after the battery has been disconnected.

At Airbag24, the team checks the unit on the test bench and repairs defective components. Stored crash data is erased, and a function test completes the work. Processing usually takes 3–4 working days, after which 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 68402852AD get to Airbag24?

You send the control unit 68402852AD to Airbag24 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns the unit to you by UPS.

Put the printed repair order in the parcel and pack the unit shock-proof.