since the snow, today I found the 4WD lock and 4WD low is not working of my RAM1500 2013 HEMI 5.7, no any alarm, I already bought a ELM327 USB OBD2 tool and download the AlfaOBD 2.2.4.0 (registered), tomorrow I will drive to a service shop to check what is happened, maybe this is why the...