Consultation on battery change

HELLO!
I must change the battery of an Opel Vectra 2000 DTI of 2004, and I do not know if when the old battery disconnect, the key is deprographing or has problems with the immobilizer. Can you answer this query?
all the best

Friend the only thing that can cause you problems is the stereo if it is the agency because many times they put antirobo code but do not worry the code Aveses comes in the owner's manual in a card.


greetings.

You must introduce the key, after changing the battery, and open and close the car, so you will schedule the closing control. Then lower the windows of the pull and hold 5 seconds. Then put the key to the door and close, keep it turned and the windows will climb. Thus you will have the windows with the automatic rise and descent function

Through the cigarette lighter you can connect another battery or any 12 volt DC current source. Just pay attention to polarity, that + be + and - be it -. Now you disconnect your old battery, you take it out and put the new one. You can now unplug your auxiliary elctric source. Thus you change your battery without having any problem of losing codes, memories and programming. I hope it serves you. JUDGE.

The fastest thing to do, is to change the battery and now, nothing happens, only the radio is uncomforted now, if you do not want to risk or have doubts, change the battery with the vehicle walking and now.