Lights stay on

You'll need to have a proper scan tool and find out what diagnostic trouble codes are being set.

Thoughts:

The Vehicle Skid Control (VSC) Light and the Traction Control (TRAC) Light are turned on anytime the Check Engine Light (CEL) comes on, because both systems are disabled at that time. There is probably nothing wrong with those systems--the root cause is often the CEL coming on, due to overfueling. Stop pumping gas into the fuel tank, after the pump clicks off. Fuel may be expanding into the charcoal canister and throwing the VSC/TRAC codes. Topping the tank off, after the nozzle clicks, can result in serious damage to the charcoal evaporative emission system. Ensure the gas cap is tight. Tighten the cap 3 clicks, after seating the cap.

Also, check the brake fluid level in the master cylinder reservoir. Clean the master cylinder reservoir and cap, prior to opening the cap. Add fluid to the MAX line, if needed, and ensure that the float works properly. Valvoline Brake Fluid, which is ABS-aproved, is a DOT 3 and DOT 4 fluid that will work well in your Sequoia. Hopefully, this will cause the VSC and TRAC lights to go out--if not, it may indicate a more serious problem.