Opel Cascada A airbag control unit repair

What is an Opel Cascada A airbag control unit?

The Opel Cascada A airbag control unit is the central control unit of the restraint system (SRS). It evaluates the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners deploy.

It is the central control unit in the Opel Cascada A (2013 to 2019). The control unit monitors the system continuously and reports faults via the airbag warning light. After an accident it stores crash data and locks itself.

If the control unit fails, the entire restraint system is affected.

Seatbelt pretensioners and airbags are controlled by the control unit. To do so, it continuously compares the sensor readings and at the same time checks its own functions, so that everything works reliably in an emergency.

Why is the Opel Cascada A airbag control unit defective?

The most common cause is crash data stored in the Opel Cascada A airbag control unit after an accident, even if no airbag deployed. Other causes are 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 cannot be erased with an ordinary diagnostic tool. The control unit stays locked.

Typical signs: The airbag warning light stays on permanently. The fault memory cannot be cleared. The diagnostic tool cannot connect.

If the warning light is on, the protective function of the system is no longer reliably available. Have the cause clarified promptly and do not simply carry on driving as if nothing had happened.

Common error codes for Opel Cascada A airbag control unit repair

The error codes of the Opel Cascada A airbag control unit point to internal control unit faults, communication problems, supply voltage faults and faults in the squib circuits. Stored crash data can also show up here.

These codes occur with this control unit:

• B1000 → Internal control unit fault, partly with stored crash data
• B1001 → Control unit locked, access blocked
• U0151 → No communication with the airbag control unit
• B1325 → Control unit supply voltage too high or too low
• B0012 → Driver airbag, squib circuit stage one faulty
• B0013 → Driver airbag, squib circuit stage two faulty

Error codes are read out with a diagnostic tool. A code alone does not reliably show that the control unit is defective. Connectors, wiring or an airbag module can also be the cause. Only an inspection will clarify it.

The codes are pointers to the area in which the system has detected a deviation. They do not yet say which component is affected in detail, and therefore do not replace an inspection of the unit.

What part numbers are available for the Opel Cascada A airbag control unit repair?

The part number is printed on the label of the Opel Cascada A airbag control unit. It determines the exact version, because within a model series there are different numbers depending on equipment and year of manufacture.

We know of these part numbers. The list makes no claim to completeness:

• 13595564

Compare the number on your unit with this list. This only ensures that it is the right unit. Whether it is defective is shown only by reading out the fault memory or by the inspection.

The label usually shows several numbers and details. Make sure to note the part number of the control unit itself, and ideally photograph the label as well.

Have the fault memory read out, disconnect the battery and remove the control unit. Create a repair order online and send in the unit. Inspection, repair and testing at Airbag24 usually take 3–4 working days. 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.