You want to get a code as soon as the thing craps on you.
Intermittent ASR are usually brake switch , but by the time you get to the scanner , it has erased.
The car has Flash code retrieve and you can make a simple tool to get the codes yourself from the EA module [ this is where you will find an ASR code on 129.066]
Do a "code tool" search . The EA access on that car are at pins 1 and 3 for power and pin 7 for EA/CC /ASR codes.