20 Most Recent 2007 Infiniti FX35 - Page 4 Questions & Answers

1st step get a can of silicone spray & wind down window & spray in both window rails from top to as low as you can. operate windows & repeat. This may free them up.

You need to have the code pulled, then cleared. That should have been done with your diagnostic tests. Many parts places like AutoZone will do this for you for free. It could be something as simple as a gas cap but it could also be more serious like a catalytic converter.
If there is a fuel vapor leak, it will record the same code as a faulty gas cap. That would mean that you need a new filler hose which is where you put the nozzle in to fill up your car with gas. This is a more expensive fix than a gas cap. I am guessing that the code which was pulled suggested a gas cap OR something more serious.
You may have more than one code being recorded. Your best bet would be to disconnect your battery for 20 minutes or so, then drive the car until the check engine light comes on again then take it to have the codes pulled. Those codes sometimes stack up and maybe it wasn't reset after you replaced the cap.

No the window regulator is not going bad in most cases, but to make a final determination of what the cause is, answer this, does the window make any attempt to roll up? if not then the switch is defective, if it does try to move lubricate the window channel's with dry Graphite spray and see if that eases the roll up problem.

does the rear wiper have a delay..?
turn it on and after it stops, leave it for at least a minute.
Some of these vehicles also have a moisture sensor so if the window is dry, the wiper will not operate until the sensor detects moisture.
You may also have a timing relay issue but the location of the relay is hard to determine as some have the relay under the dash while others mount it at the rear of the vehicle..

There should be a sticker inside the drivers door that will tell you the correct tire pressure for your vehicle, if not then a good rule of thumb is to read the max pressure rating on the sidewall of the tire and decrease it by 4-6 psi.