The battery is located under the backseat driver's side. Not only do you have to unstring the seatbelts and remove the seat, there are wires which must be hooked up very carefully to avoid fire, and all the computer info is wiped out and has to be reprogrammed. All of the retailers that offer free replacement if you purchase your battery from them, i.e. Sam's Club, Advance Auto, etc., even AAA will not touch them. We were fortunate to figure it out ourselves and did not have labor cost, which probably would have doubled our cost. The instructions to re-program the computer are absolutely ludicrous and very time consuming.