My wife just had this happen twice to her in the past two days with ther 2013 NV3500. The pedal went rock hard and the van made no attempt to slow down as she went right through the intersection. The abs light never came on and she couldn't really feel the pulsation you normally feelin the pedal when abs is working. its winter here and I'm not sure if something could be froze but we have been above freezing the last week as we have been getting dumped with snow. no Nissan dealer in the area. brakes fine all the rest of the time just these two times in the past two days.