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.
You press send.
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
To reset the EMS on a Hyundai Elantra, disconnect the battery. Leave it disconnected for 10 minutes and then reconnect the cables.
Unhook the car battery.
get code from dealer
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.