I parked my car in a parking lot and turned off the engine for 30 minutes. When I cranked the engine up, it could no longer back up. The Reverse gear acts just like the parking gear now. When I put my car in Reverse gear and hit the gas, the sound of the engine increased, but the car doesn't go anywhere. Other than not being able to back up, the car runs fine. When driving, I had tried putting my car to L2 mode, then L1 mode, both will slow down my car (normal).
I only had the distributor replaced 6 months ago. Could this have something to do with this? Or does this mean that I'll need to have my transmission system replaced? (I'm not a careless driver, I always made sure that my car stops before I change R to F gear and vice versa).
Please help if you know what the problem is. Thank you.