confirmed, i have a coolant leak !! i did some brief snooping with a flashlight and found this. the camera was sideways when i took the pic, but i found this pile of lava-rock looking crud. it is located against the engine block, just below the head gasket, and just above to the left of where the radiator hose connects to the center of the block....... its hard to tell if its a head gasket leak or coming from some place else...... it might even be a pinhole in the block !!
my 2006 Lexus battery died today, this coolant leak, and i think i found a faulty spot weld on a steering column bracket on this XRS.... Toyota quality is declining ??