Hello everyone. I have a 2005 FX35. I noticed whenever I start off in the morning for work, the gear shifts although the changing is rough and not smooth, but after a while, I observe the gear is stuck on a particular gear and refuses to go back to gear 1 even after slowing down. At this point, the car becomes sluggish and annoying, but if I put off the engine and restart, it starts selecting and not too long it get stuck again on that same gear. This is very rampant in a hot day. Even switching to manual mode does not help this situation. Please everyone, what is wrong with my car?