Red car on lift & Brake warning light
I've had the same problem as a result of trying to be clever !
I checked the front pads. They had at least 5mm on the outside pad and the computer indicated 2800 miles left. I decided to reset the indicator with a view to changing the pads in a couple of months.
This brought up the red car on lift and red brake warning light.
There's only one way to resolve this.
Replace the pads and replace the wear sensor.
A new sensor must be fitted.
This will clear the brake warning light when the car is started. Stop the engine.
Follow the reset procedure for the front brakes. The computer will then show 27000 miles left.
Start the engine. Then stop the engine. The red car lift will disappear.