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Bosch MED17.5.2 - TC1767

Bosch MED17.5.2 - TC1767 FAQ

Bosch MED17.5.2 - TC1767

Errors

Quick access to solutions for common communication and security errors encountered during the tuning process.

No data to read : TSW SendKey Rx error

This error occurs when the security handshake fails during a Bench operation, preventing data transmission.

View Solution →

Concerns vehicles from

Audi Seat Skoda Volkswagen

No data to read : TSW SendKey Rx error

Method: BENCH

Issue: The tool is unable to establish a secure communication channel with the ECU, resulting in a failed read or write operation.

Solution
  • Verify your wiring connections and ensure the power supply is stable at 13.5V.
  • You must obtain the original flash file for this specific ECU to proceed.
  • The security password must be extracted manually from the original file data.
  • If you cannot extract the password yourself, please Contact our technical support with the original file attached.
To understand more

The TSW SendKey Rx error indicates that the Trial Service Window (a security protocol in TriCore ECUs) rejected the authentication request. This typically happens when the ECU has a custom security seed or if the automated password retrieval is blocked, requiring manual password extraction from a known original file to unlock the processor.