hello, i have been having probs with my battery randomly being drained and not turning over, eventually leading to not even making a clicking noise, just completely dead. i can drive the car all day while running errands and then all of a sudden it will be dead. it will always start with a jump and then be fine for a week or so and then happen again, sometimes a month could go by before it happens again! twice now after its been jumped and started, the outside temp reads at -40 or -30 then as i drive the temp slowly reaches the correct outside temp! i have done many diy projects to rectify the prob but it always seems to come back! my service engine soon light is now on and the codes are reading misfire and a few others so idk! i have replaced the blower motor unit and rewired the wiring harness in the trunk but noticed they are getting caught in the trunk again when it closes so it may be shorting out the battery! does anyone know if the faulty wiring can cause the battery to suddenly be dead on a random. or if something else could be causing this! any input would be helpful , it is going to the shop on monday for an oil change and tune up so maybe i will find out then! i will keep my findings posted asap! thanks!