Go to the parts store and get usually a 9 volt adapter that plugs into the cigarette lighter and keeps voltage to the radio while battery is replaced.
Disconnect the neg battery cable then take the bolts and wires loose from the back of the radio under the dash. Then pull the knobs off and remove the nuts there and work the radio out of the back of the dash.
It will delete the pre-programmed radio stations.
Insert the correct code in the radio by way of the preset buttons.
Radio presets.
It is a complicated process to reset the radio in your Hyundai Sonata after changing the car battery. First you must have the access key. Enter the access key at the prompt and follow the instructions that will be shown on your radio screen.
No. The only thing would be the clock and radio.
get code from dealer
In a car battery you will only loose the presets on the radio and the time on the clock. Other than that you will loss nothing. The ECU memory will not be lost.
You probably need a code to enter into the radio presets as it is a security radio. Without the code it will not function.
Check your fuse panel for a blown radio fuse.
Radio presets and the clock.
How can I have a radio code for my car E200 (Year 2000)? I need it after changing the car battery!