So our LR4 just turned 3 and we are still on the factory battery. Should I be proactive and replace it? The wife usually drives it to work so I would hate for her to get stranded. Im thinking I'll check Costco for an Interstate and at least have a new one sitting ready to go. I also don't have an ID tool so cant do the battery reset part. Will that matter? Or should I have our mechanic do that next month when inspection is done?