Brake indicator light in dash staying on, adjusted parking brake not long ago but rarely use it, last time I did apply it the dashilght staying on after it was released

By park lights, do you mean the dash indicator? If so could be one of two problems, the light is also used to indicate low brake fluid and also a wear indicator on brake pads, good luck

First of all, the abs problem... NO do not start there, start with checking your brake fluid.. thats the number one cause for that light and no other lights on your dash to be on... if that is your problem fill it up and address the brake leak... brake fluid doesnt evaporate and your car doesnt use it up. if its low its going some where best way to do this is park on a clean surface or slide cardboard under your car pump your brakes 10 times and then examine the cardboard or move the car and look for wet spots that wernt there before or you could also have a friend lay on the ground a few feet back and look for drips while your pressing the brake pedal careful not to get any brake fluid in the eye it burns like no other... if you find a leak have it fixed if you dont it might still be a internal leak into the power brake booster and you should have someone look at it NORMALLY when you have a ABS problem with you car BOTH THE ABS LIGHT AND BRAKE LIGHT will be on not just one but the other awnsers could be correct too the brake indicator light does come on when the emergancy or parking brake is enabled try pulling the release and pull up on the parking brake pedal at the same time.. or if its a center parking brake push it all the way down with the button pushed

Top up the brake fluid and make sure the brake stop lights are all working.

Some speed wheel sensor got o bad or need adjust.

are we talking about the rear tail brake lights or the light on the dash. if dash light possible emergency brake slightly applied or low brake pressure in brake system or low brake fluid in reservoir. Rear brake lights ? check the brake switch under dash as it may have come mis adjusted for proper on/off activation

check teh switch, located under the dash, and is touched by the brake lever, also, back brake adjustment and emergency brake cable adjustment (in that order) can cause the parking break lever to not fully return and activate the switch.

Also, Ford uses this light to indicate low brake fluid level. There is a switch on or near the fluid reservoir.

Apply the parking brake with the vehicle parked, engine turned off and transmission in Park. Release the parking brake completely, then apply it again, and ensure that it is fully released. Turn the ignition on, check to see if the Parking brake warning light is on. If it is NOT on, apply the parking brake and check to see if the warning light comes on. If the light come ON wihen the Parking brake is applied,.....fully release the parking brake and check if the warning light goes OFF. If it does NOT go off, then an adjustment is needed at the parking brake switch.

pull the breck release and kick it at the same time same thing i had to do hey it worked for me

I HAVE SEEN A BAD BRAKE LIGHT SWITCH.CAUSE THE ABS LIGHT AND BRAKE LIGHT COME ON.WHEN SWITCH WAS REPLACE BOTH LIGHTS WENT OFF.

I don't know if this works on a Buick but I have had two cars that the auto adjusters worked when you used the parking brake, I rarely use the parking brake so I got in the habit of working the parking brake 20 times or so at oil change time.