Total brake failure on S1 4.2

[Maikel]

Hello,
after having had a scary monent in my S1 I am still afraid to drive it.
What happened.
I was cruising through the hills for about 2 hours and was on my way back. Just in town after a steep decent I was back on the flat when a bus i pulled out right in front of me.

I had to hit the brake, but there was no reaction at all.
The pedal went down without any sort of resistance and stayed there.
Imagine you pedal is down but no sign of braking.
That was like in the James bond movie. But not funny this time.
I pulled the hand brake and slowed down and avoided an accident.
After about 5-8 sec. the pedal cam back but still there was no pressure on the brakes.
I know from my youth when we changed the brakes I had to pump frequently and got some pressure on the wheels. Might have been some air in, but I am driving this car since one year and it was all fine. This time it was impossible to pump as the pedal stayed down.

When servo is not working I still have some resistance in the pedal just less pressure force on the brake cylinders, but what could cause such a total loss of brake?

I checked the car today again with engine off, high pressure at pedal right from the first inch after pressung, with engine on the same. Always very early resitance, in fact as far as I can remember much sooner than it used to be.

Now I am afraid to drive as it can suddenly happen.

My impression is that before I could push the pedal 1/4 of its way to have pressure, now it seems that is it almost immediatly.

Can anymone share this experience and how did you resolve it?

Thank you for assistance.

Maikel

[Heuer]

Double post - se reply in 'Brake Problem' thread.