The ABS light comes on periodically on our 2000 LX470. The dealer asked us to take it to him while the light is on which we did. He ran the diagnostic test, checked the 3 items suggested by the computer but found nothing ubnormal. He reset the code which caused the light to turn off. Later in the day the light came back on. The dealer doesn't know what is causing the light to come on. He told us not to worry about it unless we re prepared to pay big $ for them to do a detailed search. Any ideas besides putting a black electrical tape over it?