One problem related to front air bag sensor control has been reported for the 1999 Lexus ES. The most recently reported issues are listed below.
Air bag light comes on , airbags will not deploy in the event of an accident, dealer attributes the light coming on to a loose wire located under driver's seat. This has been occurring since 2003 at about 35,000 miles . The vehicle now has 70,000 miles and the light continues to come on , I feel my safety is in jeopardy every time this light comes. After repeated visits to the dealer this problem continues.