: Ensure you are using the correct fuse replacements (typically 10A/250V) to prevent damage to the unit or vehicle electronics.
: Inspect test leads for fraying or broken wires. Mac Tools Et 130 Manual
: If the unit fails to calibrate or function, it must be sent to the Mac Tools Repair Center with all components (leads, batteries) included for diagnosis [0.5.2]. 5. Troubleshooting Common Issues : Ensure you are using the correct fuse