Wow i have had my gs300 for a year and it never gave me not 1 problem... Then one day i throw my keys to my girlfriend n she dropped em and the chip came off the key the blade was fine tho... tried to start car an nothing (as u described EXACTLY!)..had mechanic re soder the chip and it started rite up... well over time the key ended up breaking again and again but the car still started just fine so i been driving it like that for months but then i go to the store yesterday and came out and it did it again i tried everything and cant seem to get it to turn over well i gave up and decided to unhook the battery cables off the battery just hoping tomorrow it will js start up... but i took both of them off not just the neg. do u think thats gonna be a issue... and a lexus dealership also told me that the whole chip gotta match computer thing wasnt put in till 98 and up... but i really hope that solves my probem.. Anyway so do u think it will stll work even tho i took both cables off?