Recreational Vehicle Lpg Tank Valve/gauge problems of the 2008 Jeep Liberty

At startup, first noticed windshield wipers were on and would not shut off. All dash lights, gauges, etc were not operating. Vehicle could not be taken out of park position. (vehicle was used the night prior in a light rain) turned vehicle on and off several times to no avail. At dealership was told the cluster was bad. . But there are so many having this problem that the part is backlogged by 4 months or more. Computer was reflashed, so everything is working except the odometer. Cannot pass inspection without getting a new cluster since that is the only means to show the odometer. . Yet its backlogged 4 months. How is this possible if its a vital truck part?.