Hello guys
Due to accident that I had back in March the car has been sitting since then. As today 7/18/2018 my car was ready to pick up and my mechanic told me to bring a brand new battery because it was dead. I replaced the battery with a brand new one and he installed it properly. When he wanted to turn on the engine it does not turn on. The starter work properly and we can smell the gas from the mufflers and it won't turn on. We tried everything and searched the internet, youtube etc and still nothing.
This is what he believes: The ECU was tuned back in 2017 October with Active Autowerke Tune and he thinks I have to RETUNE the car in order to start the engine. Is that true? He tried to contact the BMW to get a reset code by providing the VIN number but the first two codes did not work. So what should I?
This is how the problem is: