For almost a year, the vsc trac, vsc off, and emergency brake lights have been illuminated on the dash of our 2006 sequoia. it has been in for repairs six times, and many remedies have been attempted, to no avail. the three lights continue to light at random times in the past week, the master cylinder has been replaced, they have replaced and retorques sensors to spec, and replaced the booster assembly. the lights remain on. often the tech claims that there are no codes in the system and that they can't fix what they can't see is broken. they tell me it isn't a safety issue. but upon reading many message boards, this problem is not random, is indeed a safety issue and seems to have fallen through the cracks with toyota. *tr