| Code Example | Meaning | |--------------|---------| | E-503 | Internal battery communication error | | E-540 | Speed sensor signal missing | | E-610 | Drive unit temperature too high |

Authorized Bosch eBike dealers only. Requires a paid license, dealer login, and specialized USB interface cable.

You cannot simply download the full dealer-level diagnostic software as a private individual. Bosch restricts this tool to authorized dealers for safety, warranty, and regulatory reasons. However, there are alternatives for riders. 1. The Official Dealer Software (Not Public) What it is: Bosch DiagnosticTool (PC software) + Bosch Diagnostic Dongle (hardware key). It reads error codes, updates firmware, runs component tests, and configures drive units.