after using my 4wd in some snow, the front axle would not disengage and the 4 hi light on the dash was flashing. checked the actuator voltage and all was good. pulled it off to see if the fork would move but it did not. while waiting for the replacement to come, the 4 lo light would default to flash on start up. cycled the buttons from hi to lo and drove. the 4 lo worked fine but the front would still not disengage. kept it under 55 when i did have to drive and could feel the front axle pulling on turns. i replaced the front actuator and it seems to have disengaged the front axle but still have the flashing 4 lo light. can you assist?