89170-52P90 — airbag ECU crash data reset
Airbag control unit fitted to Toyota vehicles, built by Denso with R7F701684 memory. Upload the dump you read from the module and download it back with the crash data removed.
| Part number | 89170-52P90 |
|---|---|
| Vehicle | Toyota |
| Module manufacturer | Denso |
| Memory / MCU | R7F701684 |
| Method | Crash data cleared from the memory dump |
| Price | 20 tokens (from 14.29 € per reset) |
This module is in our supported database. We check your dump before any work is done — if the crash data cannot be removed, the tokens go back to your account. You never pay for a job we cannot deliver.
Reading the R7F701684 microcontroller
This module has no separate EEPROM: the crash data is kept in the data flash of its Renesas RH850 microcontroller (R7F701684). Read it over the serial flash-programming interface with a programmer that supports this MCU.
Make two reads and compare them before you upload, and keep the original file as your backup.
How the reset works for this module
- Read the R7F701684 memory of the 89170-52P90 module with your programmer and save the dump.
- Upload that file here and enter the part number 89170-52P90.
- We remove the crash record and return the repaired file, usually within minutes.
- Write the file back to the module and clear the fault codes.
Before you fit it back: clearing crash data does not repair the car. Deployed airbags, used pretensioners and damaged sensors must be replaced and the system checked fault-free before the vehicle goes back on the road.
No programmer? You can also send us the module. More answers in the FAQ.