Airbag control unit with part number A2C18212200

What does the airbag control unit A2C18212200 do?

The airbag control unit A2C18212200 coordinates the restraint system (SRS) in Opel vehicles. It evaluates the signals from the crash sensors, decides within milliseconds in an emergency whether airbags and seatbelt pretensioners are triggered, and reports faults via the airbag warning light. After an accident, it stores crash data and locks itself.

During operation the unit runs continuously and compares the values of all connected components with the expected specifications. If a value deviates, it logs the incident in the fault memory.

The crash data record the measured values the sensors captured around an event. This recording remains stored in the unit.

Why does the control unit A2C18212200 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 on connectors, and voltage spikes, for example from a weak battery or jump-starting.

Crash data are tied to the accident event, not to an airbag deployment. So the incident itself is what matters.

The remaining causes act over a longer period: electronic components age, solder joints can go cold, and moisture attacks contacts. Short voltage spikes also stress the unit.

How can you tell that the A2C18212200 is defective?

A fault shows when 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 establish a connection to the control unit, or the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to trigger.

The signs at a glance:

• Airbag warning light in the instrument cluster stays on permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

The signs can occur individually or together. The warning light makes a fault in the restraint system visible, so it is worth checking the fault memory.

Which vehicles is the A2C18212200 fitted in?

The control unit A2C18212200 is fitted in these vehicles: Opel Movano B (2010-2021).

The list shows the vehicles stored for this part number:

• Opel Movano B (2010-2021)

Compare the part number on the label of the removed unit with this page. This only confirms that you have the right unit in front of you. Also have the fault memory read out beforehand, because only the result shows whether the control unit is defective or a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 8201448824, 93168336, 93168337, 95517626, 985106290R, 985107767R.

How does the repair of the A2C18212200 work?

First have the fault memory read out and attach the log, then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in well packed. Airbag24 checks it on the test bench, repairs defective components, erases stored crash data and carries out a function test.

Processing at Airbag24 usually takes 3–4 working days. This time covers only the work at Airbag24.

Afterwards your own unit is sent 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 A2C18212200 get to Airbag24?

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

Put the printed repair order into the parcel and pack the unit shock-resistant.