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About Toyota Avensis C1203 fix

Toyota avensis T27 has an electronic park brake. Second hand (used) units are configured to the previous car and will display a warning on the dash if configuration will not match.

Please contact us via [email protected] if you need only one correction and are not willing to buy the software.

The fault code is C1203 - Vehicle Information Mismatch.
This app version works with LHD cars only.The "donor" vehicle should also be LHD.
Please open the top cover and find ST95160 eeprom memory.
Remove it from the board and read with your external programmer. Upload it to the app and select the correct gearbox type. After calibration write the new file back and solder the memory chip back.
Manual gearbox can be set in 2 ways, please try both versions in case the fault code is not fixed with version 1.
After C1203 is gone, you will need to perform calibration of park brake sensors using diagnostic tool. This is a regular/easy procedure after any brake-related job is done.
Email address for tech support is [email protected]

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Frequently Asked Questions(FAQ)

How can I fix the C1203 fault code on my Toyota Avensis?

To fix the C1203 fault code, you will need to remove the ST95160 eeprom memory from the board and read it with an external programmer. Then, upload the file to the app, select the correct gearbox type, and write the new file back. Finally, solder the memory chip back and perform the calibration of park brake sensors using a diagnostic tool.

Can I use a second-hand unit for the Toyota Avensis T27 electronic park brake?

Yes, you can use a second-hand unit for the Toyota Avensis T27 electronic park brake. However, please note that if the configuration does not match the previous car, a warning will be displayed on the dash. Please contact us at [email protected] if you need only one correction and are not willing to buy the software.

Which cars does the app version for the C1203 fault code work with?

The app version for the C1203 fault code works with left-hand drive (LHD) cars only. The "donor" vehicle should also be LHD.

How can I set the manual gearbox for the C1203 fault code fix?

The manual gearbox can be set in 2 ways. Please try both versions if the fault code is not fixed with version 1.

What should I do after the C1203 fault code is gone?

After the C1203 fault code is gone, you will need to perform the calibration of park brake sensors using a diagnostic tool. This is a regular and easy procedure to do after any brake-related job is done.

How can I contact tech support for further assistance?

You can contact tech support for further assistance by emailing [email protected].