Hi. I have 2018 VW Atlas SEL 4-motion, with 23500 miles. I bought it back in September 2017, and last night it didn't start, showing low battery message. I haven't checked with the dealer yet, but wondering if someone replaced battery of 2018 Atlas. I have been changing batteries for my Honda Pilot 2006, but never did it for Volkswagen. Do I need a memory saver or can replace it without. Any input will be appreciated.