For many modern cars, we can install the “Anti-theft mode“:
- The Can Bus UDS/CCP protocols are deactivated, so it is not possible to unlock it via the OBDII port.
- Individual 8-digit hexadecimal(0-9A-F instead of decimal 0-9) security code.
- Brute Force Attack protection
The only way for a thief to deactivate this protection is to install a new ECU, which takes a lot of time.
how to activate it?
Activation/deactivation of the anti-theft mode takes 2–3 seconds, using TuningHost iOS / Android App + ELM327 device (15-20$)
If the security code is entered incorrectly several times, the ignition must be switched off for about one minute before attempting again. This measure is implemented to prevent brute-force attacks. The security code is stored in the memory of the mobile device, so the car owner will never notice this feature.
Anti-theft mode cannot be activated if the vehicle speed is greater than 0 or the engine is running. This protection is implemented at both the application level and the engine control unit firmware level.