I have an 03 4runner and have never utilized the 4WD. Recently I was approaching a steep hill and put the transmission into the 2 position thinking that this would give me more torque to climb the hill, I heard a clunk and some clicking and immediately stopped and put the vehicle back into D (drive) and proceeded. After researching, I realize I should have simply utilized H4 L4. and that the 3, 2, and L positions are for downhill engine breaking. I have had the vehicle for 12 years and have never used the 4wd and made the mistake of thinking the 2 position would help getting up a steep incline. My 4runner ran fine afterwards with no discernible shifting issues in normal Drive mode - stop and go as well as highway. Is it possible that I damaged my transmission by my mistake ?