undo the positive or negative battery cable on your cars battery, few minuetes should do the trick.
Press the reset button
reset radio
Disconnect battery (plus) for 5 minutes.
To reset the radio in a 2006 Honda Elantra, first, turn the ignition to the "On" position without starting the engine. Then, press and hold the "Power" button on the radio for about 10 seconds until the display turns off and then back on. If the radio is locked or requires a code, you may need to refer to your owner's manual for the specific reset code. If issues persist, consider disconnecting the car battery for a few minutes to reset the entire system.
You press send.
To reset the radio in a 2010 Hyundai Elantra, first, turn the vehicle's ignition to the "On" position without starting the engine. Then, press and hold the "Power" button on the radio until it turns off and then back on, which usually takes about 10 seconds. If this does not work, you may need to disconnect the car battery for a few minutes before reconnecting it, which will also reset the radio. Always refer to your owner's manual for specific instructions related to your vehicle model.
drive it into a lake
Unhook the battery.
If you're talking about a Mercedes Benz, I don't think you can reset the radio and nav system.
I do not know the radio code for S type 2000 model. Please help
In a 2000 Hyundai Elantra, the fuse for the radio is located in the fuse box under the dashboard on the driver’s side. To access it, you'll need to remove the cover and locate the fuse labeled for the radio, which is typically labeled as "Audio" or "Radio." Checking the owner's manual can provide specific details and fuse ratings. If the fuse is blown, replacing it with a new one of the same amperage should restore power to the radio.
To reset the EMS on a Hyundai Elantra, disconnect the battery. Leave it disconnected for 10 minutes and then reconnect the cables.