Alpine A390 airbag control unit repair⁽¹⁾

What should I pay attention to with Alpine A390 airbag control units?

The airbag control unit in the Alpine A390 evaluates the crash sensors, triggers the airbags and belt pretensioners, and monitors the entire airbag system. If it detects a fault, the airbag warning light comes on.

The Alpine A390 is an electric crossover from the Alpine brand. The production version was unveiled in May 2025 and is built at the Dieppe plant in France. After an accident, the airbag control unit stores crash data and locks itself.

A defective control unit can impair the function of the entire airbag system. Airbag24 repairs the control unit you send in, in the workshop in Berlin. A specialist workshop should clarify the cause beforehand.

Which Alpine A390 generations are there?

The Alpine A390 has been built in series I since 2025. Production of this series has not yet ended.

• I (since 2025) – current series of the Alpine A390, still in production

The first units reached dealers at the end of 2025, and the first customer vehicles arrived in early 2026. Therefore, check the build year and series of your vehicle when identifying the control unit.

How do I identify my Alpine A390 airbag control unit?

The part number on the control unit's label determines the exact version. You should also check the build year and equipment of your Alpine A390 before assigning a control unit.

Read the part number from the label and have the build year and the vehicle identification number (VIN) ready. Without this information, the correct unit cannot be determined reliably.

A fault code indicates an irregularity, but on its own it does not prove a defect. One example is code U0151: communication with the airbag control unit (restraint system) has been lost. A specialist workshop then checks the cause.

What airbag equipment does the Alpine A390 have?

The Alpine A390 is equipped with front, side and curtain airbags. The number of airbags fitted depends on the version and the market.

On the GT version, driver and front passenger airbags, side airbags and curtain airbags are standard equipment. The manufacturer's information gives six or seven airbags, depending on the market.

Because the control unit coordinates all airbags, a defect is safety-relevant. A specialist workshop should check the fault, and work on the airbag system is not a do-it-yourself task.

The route to repair starts with having the fault memory read out. The battery is then disconnected and the control unit removed; these steps belong to a specialist workshop. Next, create a repair order online with Airbag24 and send the unit in by parcel. Processing usually takes 3–4 working days (checking, repairing, testing).

The repaired control unit is returned with all vehicle data and is ready for use immediately after refitting; no coding or programming is necessary.