i have a a6 2019 its been fine until i heard my car alarm going off at 3am. it killed the battery so i replaced this then after a year sometimes it would not start,i was getting central locking faults when i pressed the push start the engine would try to kick over but just stop like it was dead. i would then have to open all doors and close again and sometimes it would work and start or i would have to wait until the radio come on and try again. this happens every few months, its been to audi and they have done a software update but it is still happening anyone else had this issue?