I have a 2010 RAM 4x4 5.7. it was very cold ( -40° ) and my truck wouldn't start one morning. Battery was pretty much dead. I replaced the battery and everything seems to work great. Except the check engine and ESP/bas lights were on. The check engine light disappeared within a few minutes but the others are still on. Any suggestions?

 

clear the dtc with a scan tool. dtc are stored in non-volatile memory so disconnecting the battery won't clear them. You will need a scan tool that can access abs/chassis system codes. a code reader will not do this.