If you've got the Brembo Brakes on your ST, & if it's a 2013 it
should have them; then there's gotta be something odd going on with your brakes
OR your Park Brake if the Dash Brake light stays on after releasing the Park brake. Is that all that's happening? Does the light flash, or stay on solidly? For how long?? Do you get to hear the beeper sounding too? Have you checked the pads for wear, especially the rear pads?? Have you checked that the Park Brake Actuator (under the RHS tupperware just above the rider's foot peg/plate) is working properly :dontknow: Sorry about all the questions, but we need more detail to really have any chance of truly helping.

That brake reset process
might help, but only if it's causing or at least involved in the problem, and it could be a lot of other things beside that?? :dontknow:
As for the shuddering,
YES, low oil can & will make any shuddering on take-off worse, but you should check the level & top up the oil if necessary
AFTER each ride (preferably more than 30 minutes of ride time above idle/low revs & some at Hwy speeds!

) so it should never be too low when you start up & ride off again, and
DO NOT OVER-FILL it either, cos that can do nasty things including making it shudder & knock! :lecturef_smilie:
Another thing that you should really address - these Spyder things
REALLY don't like sitting around unused - a Spyder that's done only 7500 miles in 10 years is potentially a shed-load of problems just waiting to occur!!

Are you sure the 'shuddering' isn't coming from flat spots on the tires?? And have you replaced the tires? If they're still the original OE Spec Kendas, they're probably
DOUBLY UNSAFE to ride on at any speed now; and even if they're a/mkt replacements that are that old, they're possibly still beyond their 'safe to use'
age (even if the tread depth looks fine!) & need to be carefully inspected by a competent tire technician before riding! Then there's all the other Rubber/plastic things & oil/fuel etc that hates juuust sitting & aging; vacuum hoses can age & crack, causing running issues; brake fluid absorbs water & turns to corrosive sludge; fuel can go off & form varnish, destroying fuel pumps & injectors if used; belts can harden in the areas that've been exposed to UV & not elsewhere, causing bumps & thumps & failures when they eventually do get used; and the list goes on!! :shocked: If you haven't looked at all these things, and basically given the Spyder a
very thorough going over to make sure it's safe to ride, then the shuddering might be the least of your worries!! :yikes:
It sounds to me like you either need to find someone nearby who can regularly take your Spyder out for a run to keep it in good running order, or you really need to make an effort to get your Spyder out yourself more often - the wind therapy you'll get if you do is not just good for
YOU, your Spyder will benefit too!

hyea:
And remember -
You don't get old AND stop riding; you get old BECAUSE you stop riding! :lecturef_smilie: