Manually. Next time, buy a device specifically made to keep radio presets (they plug in to the lighter socket) or else at least write down your stations so you don't have to try to remember them all after you replace the battery.
When a station is tuned in, press the button you want to program the station to, and hold the button until the radio indicates the channel is set.
You match the yellow with the yellow the red with the red and so on...
Walmart or auto store usually sells a plug-in for the cig. lighter. Attached to the other end is a 9 volt battery. This will prevent losing codes while changing the auto battery
If there are no CEL codes, disconnect the battery for a few hours and then re-connect.
You need check the transmission module first(very popular problem with 01-03 elantras), connectors(outside on the transmision) ,scan your computer to get some codes. po713 po760 po745
It requires a scanner as the new computors keep history codes. Removing a battery cable will NOT do it.
6 1/2 inch for the front doors and 6x9 for the rear deck. You HAVE to remove the back decklid in order for the speakers to come out. They are dropped in from the top. You can also go to Crutchfield.com to get the specs for your car and the wiring codes.
putting in aftermarket radio and need color codes for 1998 Hyundai Sonata GL L4-2.oL
You will have to disconnect the battery for 10 seconds or more to reset the computer, then reconnect the battery and check if the light is off and remains off , if the light comes back on I would take to mechanic and have it scanned for trouble codes.
I got b1324 after changing my battery. Kia dealership reset the light and made it go away.
The head is aluminum and is possibly warped. you need to do a compression and cly leak down test.
http://www.modifiedlife.com/request-a-hyundai-car-radio-stereo-wiring-diagram/
A person can read the fault codes on a Hyundai Sonata by connecting an OBD II code reader to the vehicle's computer. It displays all the errors detected, as well as a brief description.