One problem related to brake light on has been reported for the 2007 Toyota Avalon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Toyota Avalon based on all problems reported for the 2007 Avalon.
Abs and brake light on, air conditioner blowing hot air,temperature gauge not working, engine electric fans not working. All above was working when parked on next startup above faults noted. Took car to Toyota and found computer mounted on abs control was shorting out the digital buss for all the computers. When this computer was unhooked ac works temperature gauge works and fan works. However now no speedometer, odometer,trip indicators work and now has check engine light as well as abs and brake light indicator are lit.