Airbag control unit with part number 68620855AA

What does the airbag control unit 68620855AA do?

In the SRS restraint system of Jeep, the airbag control unit 68620855AA controls triggering. The signals from the crash sensors come together here, and in a crash the unit decides within milliseconds which airbags and seatbelt pretensioners fire.

It checks the system continuously and displays faults via the airbag warning light.

After a crash it stores crash data and locks itself. Only the repair lifts the lock.

Why does the control unit 68620855AA fail?

Stored crash data is the most common cause: it arises after a crash, even if no airbag has deployed, and cannot be removed with a normal diagnostic tool. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

At Airbag24, this data is removed as part of the repair.

The remaining causes mainly concern electronics and connections. Voltage spikes can arise, for example, from a weak battery or a jump-start.

How can you tell that the 68620855AA is defective?

On the unit itself, the airbag warning light in the instrument cluster is the first thing to notice. Further signs are:

• an error message in the instrument cluster
• no connection between the diagnostic tool and the control unit
• a fault memory that cannot be cleared
• the light, which sometimes stays on permanently and sometimes only intermittently

In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

Which vehicles is the 68620855AA fitted in?

Jeep has fitted the 68620855AA in these vehicles: Jeep Grand Cherokee WL (from 2021).

The vehicles at a glance:

• Jeep Grand Cherokee WL (from 2021)

Comparing the part number on the label of the removed unit with this page ensures that you have the correct unit in front of you. Whether the control unit is defective or a plug or cable lies behind it is only shown by the fault memory read out beforehand.

How does the repair of the 68620855AA work?

First have the fault memory read out and enclose the log. Then disconnect the battery, and only after that remove the 68620855AA. In the next step, create the repair order online and send the unit in well packed.

At Airbag24 the unit is checked, defective components are repaired, crash data is erased and a function test is carried out. Processing usually takes 3–4 working days.

After the function test, your own unit is returned.

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 68620855AA get to Airbag24?

You send the control unit 68620855AA as a parcel or book a UPS collection for an extra charge. The return after the repair is also made via UPS.

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