My dashboard screen reads "Slow 35 mph max" at all times, whether Im in high or low range. The brake warnings are displayed also- ABS, parking brake and TC are all lit, and I have to pump the brakes to help them work properly. Connected or separate problems? Any suggestions?
Thanks

That message is normally associated with a 'hard' fault in the air suspension. Is yours on the bump stops or converted to coils?
Not sure about the others, the lights normally go out after a few revs of the wheels but if you have to pump the brakes you've got problems and should get it checked out by a mechanic.

It sounds from what you say that you have a brake or ABS issue here. The traction control light and ABS light both need a signal from the ABS sensors in order to extinguish, the handbrake light normally doubles as a brake warning light. If you are having to pump your brakes to make them effective, I would suspect an issue with either the master cylinder or the ABS pump or accumulator. When you switch the car on (not starting engine) do you hear the ABS pump kick in and does it stop after a while? If so, start the engine and press the brake pedal, does the pump run again, normally it would take a few full presses of the brake pedal to get the pump to work again and top up the lost pressure in the system.