After hitting a pot hole, I began having electrical issues starting with the tire pressure light coming on then the nav screen and radio cut off. is this related to the collision?

depends on how often you check tire pressures. you could over time be loosing air by it leaking out around the tire bead, or the tires hitting a curb or pot hole that can cause air to leak, a dirty rim may need to be cleaned or someone is keeping the pressures the same that is noted on the decal on the drivers door jam. I trust you have used a good tire gage and not just looking at the tires, as there is more weight on the front tires than the rear and the front will look like they are lower in pressure.

Check if you have one of the front tires out of balance . That is the most common issue . Did you lose a weight of one of the wheel from when it was balanced when installed . Check to see if you can see a spot where a weight was once located . did you hit a curb lately or pot hole. this alone would dent the rim and you would not know t until you really check if the tires are balance of the tires . Check that and if that does not work we will move on to the next thing to check. there is no sense just say all things it could be you start at the most obvious .

Check the tire pressure and both front tires and make sure they are near equal. Front end steering components could be bad or out of alignment especially if something got hit like a pot hole in the street stc.

Ask you Mechanic to check for leaky struts that is a common problem in that module.

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The Low Tire Pressure Indicator must be reset using the Radio. This can only be performed if you have the factory radio installed in the vehicle. This vehicle does not come with an active tire pressure management system, and as such, this light must be reset manually.
1.) Turn Radio Off 2.) Hold down disp button for 10 seconds 3.) Setup Menu should display 4.) Scroll through menu to view "Tire Pressure" (use seek buttons) 5.) Select the Tire Pressure option (Press Radio Button 1) 6.) Reset should be displayed on screen (Press disp button) 7.) Tire Pressure Light should reset

Check the connections on the battery.

ALL YOU HAVE TO DO IS INFLATE THE TIRE TO THE RIGHT AIR PRESSURE AND DRIVE THE VAN IT WILL RESET ON IT'S OWN, IF THE TIRE PRESSURE IS SET AND THE LIGHT IS STILL ON THAN CHANCES ARE THE BAN THAT SENDS THE SIGNAL TO THE COMPUTER IN SIDE THE TIRE IS BROKEN. IF YOU HIT A POT HOLE OR BANG THE TIRE AROUND TO MUCH IT WILL BRAKE, BUT DOUBLE CHECK THE PRESSURE FIRST. HOPE THIS HELPS.

check the engine earth the gearbox earth and the battery connections...

the system will monitor all 5 tires. if one is 3-4 pounds differant or 1 of the tires are missing it will come on. doesn't matter what tires you have because the valve stem does the work.

n side tyers