Hey guys, i am still learning about cars (Uber driver, so I might as well) but I'm just so frustrated, my car was left in accessory mode on accident while i was waiting for a trip and the battery drained. When I was able to get it started again there was a warning on my dash saying "transmission malfunction detected service required" but there were no other warning lights on my dashboard and the car was still driving very well and it has started up on demand since and I haven't seen the warning message or lights at all. I took it to autozone to get code checked and the battery passed with flying colors. If anyone knows what's going on I would appreciate the help, every auto shop around me is closed right now and I would appreciate any help I can get

 

Sometimes when a battery loses it's charge the memory also goes.

If you drive the vehicle normally it will most likely relearn that memory and the message should go away.