One problem related to car will not start has been reported for the 2003 Toyota RAV4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota RAV4 based on all problems reported for the 2003 RAV4.
Ecm fail. Heading north on highway 53 and made a turn to go south on highway 53 car seem to apply brakes and gears was hunting which gear to go in all the time I giving it gas to get out of the way of on coming cars,, made it home, next day drove car and as I made a right turn same thing again went back home and call Toyota dealer they said it sound like the tranmission was failing, got on the internet and found that the ecm had fail on the car, I call Toyota and they said it would cost $1400 and that Toyota would not pay or discount any of it even they had know about the fail of the unit since the beginning, I pull the ecm unit myself sent it to be repair got it back and reinstall it and car would not crank had it tow to Toyota dealer and they said a wire had to be replace, after picking the car up it run good but front power door locks does not work and the security system does not work, I can live without those 2 system for now since I don:t want to put any more money into the car right now. I think Toyota should have replace this since they knew it was going to fail at some time with the 2003 Rav4 but no they would not do anything about it, no help form them. No more Toyotas for me or my family, I am going back to a Honda for sure. Total cost to me was $833. 05 not counting without the car for 2 weeks.