* Resetting the radio: This usually involves a specific code provided by the dealership or found in your owner's manual. You'll need this code to unlock the radio after a battery disconnect or other power interruption.
* Clearing trouble codes (check engine light): This requires a scan tool (often called an OBD-II scanner, though the connector may be different on that year). Disconnecting the battery *might* temporarily clear some codes, but it won't address the underlying problem. A mechanic or auto parts store with a scan tool can read the codes and help diagnose the issue.
* Resetting the PCM (Powertrain Control Module): There's no user-accessible reset for the PCM. Again, disconnecting the battery for a short period might clear some temporary memory, but a true reset usually requires specialized tools and procedures only accessible to mechanics.
* Problems with other electronic modules: Various modules control different functions (windows, seats, etc.). Problems with these usually require diagnosis and repair by a qualified mechanic, not a simple reset.
In short: If you're experiencing a specific problem, describe the issue, and I can give you more specific advice. Simply disconnecting the battery for a short time (30 minutes to an hour) is the closest thing to a general "reset" for many systems, but it won't solve all problems and may require reprogramming of the radio. Always consult your owner's manual for specific instructions regarding the radio and other systems.
