 Has anyone heard this one? I bought my altima coupe new & it rode well for about a year--no probs. Now the transmission vibrates at 25-40 mph, & getting worse. The dealer tells me the transmission needs to adjust to my style of driving-that they may need to reset it to the factory setting and let it "learn my style of driving."this sounds like bs to me! Also, the car keeps telling me I have no key, & the car won't start w/the push button. I've gone through umpteen batteries in the last few months. I can put in a new battery today, & tomorrow the car will tell me my key has no battery. Very frustrating! The dealer tells me they are "going back & forth w/Nissan" & will let me know. 