How do you reset program the radio in the 2002 suzuki grand vitara after a battery change?

To reset the radio in a 2002 Suzuki Grand Vitara after a battery change, turn on the ignition and then the radio. You may see a message like "CODE" or "SEC" indicating that the radio is locked. If you have the security code (usually found in the owner's manual), enter it using the preset buttons. If you don't have the code, you may need to consult a dealership for assistance.