Airbag control unit with part number 1473446-00-C

What does the airbag control unit 1473446-00-C do?

The airbag control unit 1473446-00-C manages the SRS restraint system in the Tesla. It evaluates the signals from the crash sensors, selects the appropriate airbags and seatbelt pretensioners within milliseconds of an accident, and monitors the system continuously.

The unit also carries the manufacturer number Bosch 0285015361 on its housing. It shows detected faults via the airbag warning light. After an accident it stores crash data and locks itself.

Why does the control unit 1473446-00-C fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it, and Airbag24 erases it during the repair of the 1473446-00-C. Other causes include ageing, connection problems and voltage spikes.

The further causes can be described individually as follows:

• aged electronic components
• cold solder joints
• moisture and corrosion at connectors
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 1473446-00-C is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears in the instrument cluster, the diagnostic tool finds no connection to the control unit, or the fault memory cannot be cleared. These are the signs of a defect in the 1473446-00-C.

If the diagnostic tool does not connect, the system is likely not working fully. In an emergency, the airbags and seatbelt pretensioners may fail to deploy. The warning light indicates the defect, so have the system checked promptly.

Which vehicles is the 1473446-00-C fitted in?

The 1473446-00-C is used in these vehicles: Tesla Model S Mk1 (2013-2021); Tesla Model 3 Mk1 (2019-2023).

You can see the assignment to this part number in the overview below.

• Tesla Model S Mk1 (2013-2021)
• Tesla Model 3 Mk1 (2019-2023)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the right unit; the comparison does nothing more. Whether the control unit is defective or a connector causes the fault is only established by the fault memory, which you have read out before removal.

For the same vehicles, we also repair control units with the part numbers 0 285 014 174, 1005273-00-F, 103222400B, 1095757-00-B, 1095757-00-C, 1512876-00-B.

How does the repair of the 1473446-00-C work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the 1473446-00-C. Next, create a repair order online and send in the well-packed unit. Processing at Airbag24, including testing, repair, erasing the crash data and a function test, usually takes 3–4 working days.

Removal only takes place once the battery is disconnected, which is for safety. After processing, your own unit is returned 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 1473446-00-C get to Airbag24?

Send the control unit 1473446-00-C as a parcel to Airbag24, or book a UPS collection for an extra charge. Airbag24 returns it to you by UPS after the repair.

Place the printed repair order in the parcel, and pack the unit shock-proof.