D,
In stop and go traffic try and use neutral while stopped, if the temp is rising. That should cut some of the heat being generated in the transmission. Not sure what kind of transmission cooler you have, if it is by the radiator or part of the radiator then it needs air flow and you may need for the temps to rise, to kick the fan in on high, to get temps down. The fan can lag and temps may rise before they fall from a cold start when you are first on the road. If it is a separate cooler underneath with coolant flow passing through it, it will tend to follow the rise and fall of the engine coolant temp. So if the fan always kicks in and you have temporary higher temps in traffic or when first starting out that may be quite normal for your coach. Manage it as best you can if in traffic.
High pressure on both tires would be possible with a lot of braking heating the hub, then the wheel, then the tire. High pressure on one tire could possibly be telling you about a dragging brake. I would drive a few stop and go brake applications, simulating what caused the issue and use an IR gun to check the drums or rotors, whichever you have, all the way around. They should be similar. You can also verify if all the tires are a similar temp. The TMPS limits are usually something the user sets, if the front temps are similar and the rear temps are similar and no brake issues are observed you could raise the temp limits to encompass what is normal rise for the conditions at hand. Some differences in brake front tor rear temps are normal based on design proportioning of the braking system but within the same axle they should be similar within reason.
ABS, I am not sure what to recommend, but sometimes based on forum info, the sensor position or a sensor plug or wire has been the cause of a false ABS indicator. I have no real knowledge, given I have not had an ABS issue to deal with. It probably means something is up, given it has changed, and should probably be checked out.
Later Ed
