Oil Change and Brake Questions

From the URL, I have interpreted that A) the ABS pump runs when a low pressure set point is reached and the system needs to be re-pressurized, B) When the low pressure state is experienced, the ABS light and the brake warning light are on until system pressure set point is reached, which I interpret as C) the ABS light and brake warning light comes on only when the pump is running.

This is consistent with my car, that the lights come on and the pump starts, and the lights go off when the pump stops. The URL also says "For reference you should be able to press on the brake pedal from 5-8 times without the Hydraulic Pump Motor running. If this is not that case you are due for an Accumulator soon."

However, I would like to check if your car has the ABS pump running when there are no lights on the dash? Could it be that on your car the pump start set point is at a higher pressure than the ABS/brake warning light set point? Or are the points the same?

 

Sounds about right, since we are in the range, but my concern if the pumps should be running *without* the lights coming on? PAP and I are experiencing a situation with the lights coming on when the pumps run.

 

I think for future reference, it would be good if anyone has found a source for the accumulator by itself instead of the whole ABS pump assembly. It looks like there are many cars that use this pressurized Teves system and accumulators seem to be available separately. However, the size and shape and specifications of the accumulator for the 348/355 may be unique, or the thread at the coupling may be unique, so I'd be wary of using one meant for another car. Has anyone sourced the accumulator separately?