If the word LOC appears in the display take it to your GM dealer, they can reset it usually free of charge.
You probably need a code to enter into the radio presets as it is a security radio. Without the code it will not function.
Any security code questions can be solved by taking it to the dealership. There is no standard code.
Call 1-800-MERCEDES, give them your VIN#
If the radio has a security code you will have to insert the code for the radio to work.
Disconnect the battery. Warning: If you disconnect the battery for an extended period of time, the radio will not work and you will need to enter a security code to get the radio to work again. The dealership will charge you $$ to supply you with the security code.
Insert the correct code in the radio by way of the preset buttons.
It will delete the pre-programmed radio stations.
Radio presets.
Clock & radio presets. Possibly the radio security code if the car is equipped with a security system on the radio.
You need to find the security code, (usually written down on the handbook somewhere) and input the code its usually 4 numbers.
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.