How to reset the Check Engine light on a Ram 1500?
How to reset the Check Engine light on a Ram 1500? How To Reset the Check Engine Light on a RAM 1500. 1 Find your battery under the hood and disconnect the black/negative cable. 2 Wait 20 minutes for the power reserve to expire. The RAM 1500 check engine light should reset automatically during this time. 3 Now, just reconnect the black/negative cable. You’re ready to get back to work. When does service 4WD light come on on Dodge Ram? The bulletin applies ONLY to vehicles with an electronic transfer case (sales code DH8, DH9 or DK3) built before January...