We were driving when I made a right turn and suddenly the steering wheel locked on me and at the same time various warning lights lit up on my dashboard. The car slowed and I was able to regain control of the steering wheel to pull over. After driving a few miles further we once again came to a right turn and everything happened as before except with greater intensity. We tried to straighten the steering wheel for control and were able to pull over into an empty parking lot. By the time we came to a stop, which took all of just one or two minutes, smoke was coming out from under our hood. We quickly got out of our car and opened the hood to see the battery in flames. I called 911 while my husband poured his cup of water over the flames. It stalled the fire but it continued to spark until help arrived. I am certain if we had not had water the whole car would have caught on fire. The car was towed to a Toyota dealership where we were told that their was an issue with battery installation. At present it is being worked on but I have lost confidence in this vehicle especially since we got no warning that there was a problem and we could have been badly injured or killed if the circumstances had been different and we had not been able to pull over and get out or have water with us. We have since learned that this is an issue for many people who own this 2018 RAV4 vehicle. I also learned there is no recall on this issue. I hope that Toyota isn't waiting for someo