You can find the tool on the following community and technician resource sites:
| Error / Issue | Likely Cause | Solution | |---------------|----------------|-----------| | Tool says “No response from printer” | Printer not in service mode | Repeat service mode entry carefully | | “Error 001” or “Error 005” | Wrong port or USB connection | Use USB 2.0 port; reinstall driver | | Resetting works, but error returns immediately | Physical pad truly full | Open printer, clean/replace pad, then reset | | Tool opens but buttons are grayed out | Wrong tool version for your model | Find V5103 specific to your printer series | | Windows blocks the .exe as virus | False positive (common) | Temporarily disable Defender, or use Sandboxie | Canon Service Tool V5103 Download
If these manual methods fail, ensure you are downloading from a reputable community forum rather than a generic "free download" site to avoid security risks. Service Mode button sequence for your particular printer model? You can find the tool on the following