How do I replace the key battery on my 2005 Chrysler Town and Country?

Question edited for clarity.
Question moved to model category.

Disconnecting the battery is never a good idea as it breaks the code paring between the key, the BCM / ECM and Immobilizer Module. Always charge a car battery in the car without removing it. Even a dead battery has enough volts to keep the ECM / BCM programming alive. Have all the keys done at the same time. If you only have one key, have another chip key cut and programmed. You don't mention a second key, and we get so many people here who lose their only key and ask how to bypass and hot-wire. The answer to that is "you can't".

What does code P0513 mean? The OBD-II code P0513 stands for 'incorrect immobilizer key. ' The code activates when the PCM fails to recognize the immobilizer key (ignition key) despite detecting its presence.

P0513 Code: Causes, Symptoms and Ways to Repair It!

way.com https://www.way.com > ... > Engine Codes

error code P0513, how is this fixed - Chrysler

RepairPal.com https://repairpal.com > ... > Town & Country > 2005
Feb 21, 2017 - i ran the troubleshoot code P0513 on my van. ' Find answers to your 2005 Chrysler Town & Country question from certified mechanics and auto ...

1 answer · Top answer: P0513 Chrysler Incorrect Immobilizer Key...copy and paste the link below... P0513 ...
2007 Chrysler 300 - what does code P0513 mean and how do ...
Mar 11, 2013
P0513 - OBD II Trouble Code - RepairPal.com
Jul 5, 2018
What's does po513 mean on Chrysler 2007 v6 3.5l
Aug 30, 2017
More results from repairpal.com

2004 Chrysler town country with code P0513. The van will ...

JustAnswer https://www.justanswer.com > Chrysler Repair
Mar 13, 2017 - Hi I'm David, you need to have the keys programmed to the SKIM (immobilizer). P0513 is an immobilizer fault. it is not recognizing the key.

..

under the hood on the drivers side next to the battery.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Fixed.

if you have the battery handy , replacing the old immediately should not alter the programming
the program will not hold indefinitely but replacing is a may be 30 second job and most key fobs hold the program for a minute

I would replace the blower motor speed control switch.

Check fuse 14 and 19 in the under hood fuse block. If those fuses are good than you will need a high end scan tool to see what is going on.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

It´s in the fuse box located in the passenger side under the hood, near the battery, open it and in the back of the cover indicates wich fuse is for the signals

Right headlight sounds blown to me. Other problem needs to be looked at.

window cable is breaking. replace window motor and cable assembly.

very simple pop the back off the remote and replace battery.