Tesla Cybertruck Mk1 airbag control unit repair

What is a Tesla Cybertruck Mk1 airbag control unit?

In the Tesla Cybertruck Mk1, the airbag control unit is the central control unit of the restraint system (SRS). It reads the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners deploy. It also continuously monitors the condition of the system and indicates faults via the airbag warning light.

The control unit is installed in the Tesla Cybertruck Mk1 (since 2023). It is manufactured by Bosch. While driving, it checks itself and the connected components on its own, and as soon as it detects an inconsistency, it reports it via the warning light.

If an accident occurs, the unit stores crash data and locks itself. The system is then no longer ready for use, and the warning light stays on.

Why is the Tesla Cybertruck Mk1 airbag control unit defective?

Most often, a defective Tesla Cybertruck Mk1 airbag control unit is the result of an accident: the crash data stored in the process remains in the unit even if no airbag deployed, and an ordinary diagnostic tool cannot remove it. Other causes are aged components, cold solder joints, moisture and corrosion at the connectors, and voltage spikes.

Voltage spikes arise, for example, from a weak battery or from jump-starting. Electronic components age over time, and solder joints can come loose. If moisture reaches the contacts, corrosion forms there and disrupts the connection.

How can you recognise the problem? The airbag warning light stays on permanently, the fault memory cannot be cleared, or the diagnostic tool cannot establish a connection to the control unit. At that point at the latest, it is advisable to have the unit tested.

Common error codes for Tesla Cybertruck Mk1 airbag control unit repair

We currently know of no error codes for this Tesla Cybertruck Mk1 airbag control unit. The codes differ from manufacturer to manufacturer and are retrieved from the fault memory with a diagnostic tool.

Read out the fault memory of the restraint system and enclose the report with the unit you send in. This allows the fault to be narrowed down more quickly during testing.

Please note: a code on its own does not prove that the control unit is defective. The cause can equally be connectors, wiring or an airbag module. Only testing provides clarity.

What part numbers are available for the Tesla Cybertruck Mk1 airbag control unit repair?

You will find the part number on the label of your Tesla Cybertruck Mk1 airbag control unit; it defines the exact version. Depending on equipment and year of manufacture, there are different numbers within a model series.

Below you can see the numbers known to us. This list is not complete.

• 1872985-00-A (Bosch)

Hold the number on your unit next to this list. The comparison only shows that you have the right unit in your hands. Whether it has a defect only becomes clear from reading out the fault memory or from testing at Airbag24.

The route to repair begins with having the fault memory read out. In the second step you disconnect the battery, in the third you remove the control unit. Then you create a repair order online, and finally you send the unit to us. At Airbag24, testing, repairing and checking 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.