Most modern vehicle computer systems are self-learning. If the battery goes completely dead (and stays that way for a while), much of the computer’s “learned” mapping is lost. This can effect fuel economy and performance, at least until the computer re-learns.

Jason Lancaster is the editor and founder of AccurateAutoAdvice.com. Jason has worked in the auto industry since 1998, including nearly 10 years of auto dealership experience. Jason started out as a salesperson and worked his way thru finance manager, sales manager, used car manager, and new car manager. Jason is also a bit of an expert on dealership service and repair, as well as the parts business. Jason has been cited as an auto expert by the BBC, The Huffington Post, Forbes, Newsweek, and more.