Tesla Model S Airbag Crash Data Reset by Launch X431

This instruction show you guide on how to use Launch X431 device to reset airbag crash data for Tesla model S.The function is used to reset airbag crash data in order to recycle airbag ECU (Electric Control Unit).


Note:In some countries, erasing airbag crash data without changing airbag assembly is not legal. So,we highly recommend to replacing car’s entire airbag assembly.


Related Device:

Launch X431 V Pro or Launch X431 PAD V (Amazon Official Shop)

Android diagnostic devices, Tesla airbag repair designated connector

TESLA V10.02 or above version


Airbag ECU connection position


Airbag ECU wiring diagram


PW: Power wiring, wire two position to write EEPROM.

+12V: 12V power supply

GND: Ground wire

CAN_H: CAN high

CAN_L: CAN low


Tesla airbag repair designated connector wiring diagram




Resetting airbag crash data software operation procedure

Go into Tesla software, select Model S->Special Function->Service AIRBAG,as shown in figure 1, or select Model S-> System Selection–> SDM Airbag-> Special Function, as shown in figure 2, it will display the following menu.

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Read airbag ECU memory, select Read EEPROM menu, when reading is done, input backup file name, select backup file storage directory, data backup is done.


Input backup file name, for example “Model_s_20210520”


Click “OK”to backup data.



Read EEPROM and backup finished


Erase crash record, go into Erase Crash Record menu, the software will run for several seconds and will automatically finish it.


Re-write airbag ECU battery backup data, select “Write EEProm” menu.

Select backup file

Click “Model_s_20210520.bin” to select back file


Click “OK”button


Edit backup data. Press [YES] to use default data. Press [Auto Set] to automatically modify value (recommended). Press [Memory Dump] to manually modify backup data.


If you press [Auto Set], it will skip this procedure. Press [Memory Dump], you can manually modify backup data. Start address is where the system starts to read backup data and it can be modified manually. After entering start address, press [Confirm] to write modified data, click [Restore] to recover it to old value.

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Write Data

Tesla-Model-S-Airbag-Crash-Data-Reset-by-Launch-X431-17 Tesla-Model-S-Airbag-Crash-Data-Reset-by-Launch-X431-18


Perform “Clear Fault Code” function, and then put airbag ECU back on vehicle.


If you find the above procedure is cumbersome, please click [Crash Data Resetting Automatically] menu, it will automatically perform all procedures.

More test report about Launch X431 please check:Launch X431 Test report

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