2003 toyita camry wont shift from 3rd to drive

Hello, a proper check of any present diagnostic trouble codes should be performed along with related symptom based diagnostic testing procedures for your concern. If there are no electronic faults noted or any transmission related trouble codes, it could still be that you have a mechanical problem within the transmission that prevents proper engagement to either 4th gear or even engagement of the torque converter, which happens around the same time often. Testing will determine what is going on; there are no real checks you can do without proper equipment and diagnostic routines to resolve your concern.