Airbag control unit with part number 985105895R

What does the airbag control unit 985105895R do?

The airbag control unit 985105895R controls the restraint system (SRS) for Alpine. It reads the crash sensors, decides in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports faults via the airbag warning light.

After an accident the unit stores crash data and locks itself. The control works without any intervention by the driver.

A working control unit is one of the foundations of passive safety in the vehicle.

Why does the control unit 985105895R fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered; it cannot be erased with a normal diagnostic tool. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes from a weak battery or a jump start.

The crash data remains in the unit until it is specifically removed. That is the main cause one looks at first when a fault occurs.

The other causes concern the electronics and their connections and are only narrowed down during the test.

How can you tell that the 985105895R is defective?

The airbag warning light in the instrument cluster is permanently or intermittently on, and an error message appears there. The diagnostic tool gets no connection to the control unit, and the fault memory cannot be erased. In an emergency, airbags and seatbelt pretensioners may therefore fail to trigger.

These signs are clear enough to have the unit checked. The warning light is the first indication you will see.

Which vehicles is the 985105895R fitted in?

For Alpine, the unit is fitted in these vehicles: Alpine A110 (from 2017).

The assignment from our current data looks as follows:

• Alpine A110 (from 2017)

Comparing the part number on the label of the removed unit with this page only confirms that it is the right unit. Having the fault memory read out, on the other hand, shows whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the 985105895R work?

You have the fault memory read out and enclose the printout. Then disconnect the battery and only then remove the control unit. Finally, create a repair order online and send the unit in well packed.

The order is important for your safety when removing it, so it should not be changed.

Airbag24 tests the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Afterwards, your own unit is returned. 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 985105895R 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.

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