One problem related to air bag light on has been reported for the 2010 Lexus IS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Lexus IS based on all problems reported for the 2010 IS.
Takata recall. Recently financed a 2010 Lexus Is250 in Dec 2015. Shortly after I can't recall exactly when I noticed the airbag light was lit on, but I never paid much attention because I assumed that it was lit because it meant working active. After doing research I have learned that this was not the case and Is showing defective. This has been and still Is a big concern for many owners for a safety and deadly reasons. I am almost afraid to drive my car now for fear. I also do not not have the possible quoted other complaints for $3,000+ to fix this safety default. I am very disappointed in Lexus/Toyota for not having these defective non safe airbags on recall.