2011 Nissan Sentra Questions

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97,000 miles great car until recently. I’ve taken care of the car for 60,000 miles. Mass air flow sensor was changed due to the code. Car was acting great again until a week later. Doing the same thing but now the front end or control of the car is lost Sporadically. Went had it tested through on the same codes and now lost our low-voltage.
When I lock or unlock car doors with key fob or the power door lock button 3 of the 4 doors lock. Leaving one door that dose not seem to be conected to the rest of the power door lock. Power window still works on the door lights still come on when door opens and alarm will sound of door opens and alarm is set. Door will lock and in lock by hand.
I bought a Sentra last year at 96,000. It is now at 107000. I've noticed that my car has been burning oil. The first time I noticed it was because the oil light did illuminate. Recently, about a couple months ago I got an oil change. Yesterday I had to put 3 Quartz of oil in the engine. From what I read it could be a Cat. problem? I also, read that there's no ultimate way to repair besides replacing the engine. Someone I knw also noticed a bit of a knocking sound. Which I think was probably due to not having much oil.
I hit a curb on the passenger side front after that I smelled rubber burning and my Car started sounding funny and drove different I was doing 40 mph and my RPGs was between 6 and 7. On the manifold on right side I see it is wet and left side is dry. I checked the oil it was ok, the car didn't over heat. The car was parked for two hours after I hit the curb. What could it be?
dont know how to remove tail lite assembly
how to remove the tail lense to replace the bulb break lite
I am due for an oil change and it knocks faster with car speed but does stop periodically on long straight-aways. As soon as I start again it begins to knock.
Vehicle has a warning light on panel which looks like a horseshoe, or possibly a headset, with an exclamation point on the inside.
When on the highway the sound is like the car is idled but it's not. The sound stops when I turn the corner. Could this be the wheel bearing or do I just need a new set of tires?
When I press the power lock button, a loud buzzing sound comes from the passenger side door. It also occurs when I turn the car off and remove the key. What is the problem?
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