When I push the button on the lower left side of the driver's side seat to move the seat up or down or forward or backward, the seat does not move.

you may have just over run the end stop , try sitting in seat and whilst pressing the back button push with your feet against the floor , this might get the seat moving again , if not i think you may be looking at getting a new switch , but get it checked by a mechanic first as there may be some other way to get it moving

Same thing happened to me checked everything found the problem was in seat switch box came apart, I just put back together and bam seat’s working again, check it.

Before you do any of the expensive things disconnect and reconnect the wiring to the seat I had the same exact problem with my 2009 Chevy Impala and was ready to take it to the dealer when I disconnected the power cables to it and reconnected them I found that one of the Harnesses was loose and the problem was solved

First try as fallow, get in to the seat, then keep tight your foot on floor and give a good press backward to the seat and operate the seat switch towards back, just release and do it again keep going that way it will start to move back words, if it start to move do it few time and do it every time you get in to the car at least two time per day continue it for one week, It will be OK otherwise need chassis no for more information,

the knob on the left side of the lower cushion if its power seats push it forward, if not power pull the lever under the front of the cushoin UP to move the seat

On ABS light most common problem is ABS control module , they failing left and right.
As for the seat adjustment , sound like you need a new seat switch.

I had the same problem some one on one of the web-sites solved his problem by banging on the track rail in the front while pushing the seat button back after a good few bangs it unjamed and works great now .I feel like I saved at least $1500 by dealer rates.

It isn't wired wrong. Mine does the exact same thing, but it didn't used to be backwards and the wiring has never been changed.

Unfortunately you need a new seat track assembly. I'm an infiniti tech and have replaced MANY of these tracks.

You can move the drivers seat back by turning on the power, getting in the seat and position your feet firmly on the fron flor with your back firmly against he seatback, and then engage the switch pushing back - while pushing like hell with your feet. You can actually hear the seat drive shaft turning while the seat moves back. The principle should be the same for moving forward, but pressure would have to be aplide to the back of the seat.