Just took my recently acquired 94 XJS out for an oil change today (first time I have driven it since bringing home from sale) and the brakes failed close to the house! When I press the brake pedal, nothing there, but the ABS light comes on while pedal is pressed. Heat from front right rotor also, so am guessing piston is seized and may have blown seal, but i don’t see any leaking brake fluid. Sunday’s job will be to flush brake fluid and see if i have tree travel of caliper pistons, but i am wondering if there is anywhere else i should look while i have the front wheels off?
On the actual failure, when i pumped the brake pedal several times, the brakes did come back, but the next time a pressed the pedal (1/2 mile down the road) i again had no brakes and the pedal went all the way down with no resistance. When i went out to the car this morning and pressed the pedal without anything turned on (key out of ignition), i have regained pressure on the pedal.