Airbag control unit with part number 68402858AC

What does the airbag control unit 68402858AC do?

The airbag control unit 68402858AC is the central control unit of the restraint system (SRS) of Jeep. It evaluates the signals from the crash sensors, decides in a crash within milliseconds about airbags and seatbelt pretensioners, and reports faults via the airbag warning light. After an accident it stores crash data and locks itself.

The unit monitors the restraint system continuously for as long as the vehicle has power. In doing so it checks sensors, wiring and trigger circuits.

In everyday use this monitoring is hardly noticed. It only becomes conspicuous when the control unit detects a fault.

Why does the control unit 68402858AC fail?

The most common cause is crash data stored after an accident, even when no airbag has triggered. Other causes are aged components, moisture and corrosion at plug connections, and voltage spikes.

The control unit records crash data at the moment of impact. A normal diagnostic tool cannot erase them, so they remain in memory until they are deliberately removed.

The other causes at a glance:

• Aged electronic components that distort signals
• Cold solder joints in the circuit
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or jump-starting

How can you tell that the 68402858AC is defective?

A defect in the 68402858AC shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently. A fault message in the instrument cluster, a missing connection to the diagnostic tool or a fault memory that cannot be cleared are also signs.

With these signs airbags and seatbelt pretensioners may not trigger in an emergency. The warning light shows the finding as soon as the system detects it.

Do not leave the warning light unattended; have the finding checked.

Which vehicles is the 68402858AC fitted in?

The control unit 68402858AC is fitted in these vehicles: Jeep Compass MP (2016-2020) and MP Facelift (from 2020).

The overview lists 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 your removed unit with this page. This only ensures that you have the right unit. Also have the fault memory read out before you remove the unit. Only this result shows whether the control unit itself 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 68402858AC work?

First have the fault memory read out and attach the log, then disconnect the battery and only afterwards remove the control unit 68402858AC. Next create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days. Afterwards 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 68402858AC get to Airbag24?

You send the control unit 68402858AC as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 returns it by UPS.

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