Airbag control unit with part number 13589405

What does the airbag control unit 13589405 do?

The airbag control unit 13589405 coordinates the restraint system (SRS) in the Opel. It evaluates the signals from the crash sensors and decides within milliseconds which airbags and seatbelt pretensioners are triggered. After a crash, it stores crash data and locks itself.

During normal operation, the unit monitors the connected sensors, the wiring and the output stages continuously. If it detects a fault, it records it in the fault memory and indicates it via the airbag warning light in the instrument cluster.

The fault memory can be read out with a diagnostic tool. There, experts can see which event the unit has registered before they check components. Seatbelt pretensioners tighten the belt in a crash; the control unit triggers them together with the airbags.

Why does the control unit 13589405 fail?

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

The fact that no airbag fired does not mean that the control unit was left untouched. The crash data is held in the unit, regardless of how the accident turned out for the occupants.

The other causes lie in the electronics themselves and in their connections. Components age, solder joints can go cold, moisture attacks plug contacts, and voltage spikes stress the circuits. Which of these applies is shown only by the test.

How can you tell that the 13589405 is defective?

The airbag warning light in the instrument cluster lights up continuously or intermittently, an error message appears in the instrument cluster, the diagnostic tool establishes no connection to the control unit, or the fault memory cannot be erased. In such a case, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency.

The warning light is the clearest sign. It shows that the system has detected a fault, even if the vehicle can still be driven normally.

A diagnostic tool without a connection does not necessarily mean the control unit is at fault. Plugs and wiring can also be the cause, which is why an inspection must clarify this.

Which vehicles is the 13589405 fitted in?

The control unit 13589405 is fitted in these vehicles: Opel Meriva B (2010-2017).

The assignment to this part number looks like this:

• Opel Meriva B (2010-2017)

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

For the same vehicles, we also repair control units with the part numbers 13158713, 13203620, 13577275, 135856, 327963935, 32963935.

How does the repair of the 13589405 work?

First have the fault memory read out and attach the log. Then disconnect the battery, and only after that remove the control unit. Next, create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench and repairs defective components. Stored crash data is erased, followed by a function test. Your own unit then goes back to you. Processing at Airbag24 usually takes 3–4 working days.

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 13589405 get to Airbag24?

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

Print out the repair order, put it into the parcel and pack the control unit shock-resistant.