Hi everyone. I have an 88 300E with 204K miles. Recently there is a sound from the left front wheel when the brakes are applied. It's not a screeching sound but rather a high pitched whistle. When the car is almost at a stop the sound stops and the ABS seem to engage (pedal pulsates, sound, etc). This happens more as the day wears on, I suppose because of heat accumulation.
The pads are new and the brake system was recently flushed (MB dealer).
I have the receipts from the previous owner and he experienced the "ABS engaging" a few times but the mechanic was unable to reproduce the problem.