I'm going to look at a 2007 4x4 tomorrow with 157k miles I'm not familiar with the 4x4 on the 4Runner so if someone could tell me what the lights on the dash should do when I put it in 4 hi and 4 low I would really appreciate it, I know there are issues with an actuator and that if it doesn't engage it will blink or something but I really don't know exactly what, also if there is anything else I should look out for, thanks