Brakes That Self Release Then Don't When They Should

[ADM]

Brakes when applied, intially engage, then without warning release, drivers foot still on the pedal, then the brakes apply again - all by themselves - all very frightening.

Then they do not release properly when required.

So on a car that is a little more than 3 years 6 months old the second set of replacement brake calipers are being fitted. The local dealership have not managed to find anything wrong with the brakes and advised I take the vehicle to a third part for repair this time. Oh and they will sell the parts required at full price.

[TigerFish]

Strange diagnosis on the cause. I can see the calipers may stick on (quite a common issue on older Lexus cars - yours is still a bit young though) but I'm prepared to bet a lot of money it isn't the cause of the brakes releasing when they shouldn't.