Hi

 

The radio code, clock (non-navi only), and radio presets are the only things you'll have to reset. You could use a battery tender on the terminals while you replace the battery if you don't have a radio code and don't want to go to the dealership for them to retrieve it.

 

I leave the engine running when I replace batteries most of the time just so I don't have to worry about finding radio codes and all the other non-sense. Now, I do not suggest doing this because it can cause an electrical surge and blow out components such as the ECU. Most local parts stores sell memory savers that plug into the cigarette lighter to hold the radio code and presets, but I'm not 100% sure they work and how well.

 

ok if you want replaced the battery u got 2 chooses
1 let the car running and changed
2 find the radio code and turn off car and disconnect the battery if u don't have the code you can hold 1 and 6 and turn the radio it should give you some numbers write down and pm or go to the dealer ship