Q: I have a 2002 Lexus ES300 with 185,000 miles on it. Some time ago, the ABS and brake light came on simultaneously. I took it to my local shop who diagnosed a faulty ABS sensor. They said that I did not really need to replace it since it would cost close to the value of the car and that, even with a faulty ABS system, it would revert to normal braking and I'd just need to be more careful about braking in inclement conditions. I have not noticed any problems with braking. I don't really want such an expense for an old car. Should I be concerned?
S.M., Plymouth, Minn.