Free methods:1. Disconnecting battery terminal connection for 1 minute (free)2. Disconnect battery connection then hold horn or use headlights to discharge remaining energy in circuit (free)3. Disconnect both battery connections and use jumper to drain circuit (free)This is pretty simple, but will likely result in you losing your radio presets and perhaps some other small things like that. Use Scan tools:

4. Use OBD2 tool Autel AL301 ($25.99). Consult your tool's manual for information on how to do it with your particular model.