The 2009 Nissan Armada SE is a moderately difficult car when compared to other models, due to the extra steps needed for a few of the repairs. To access the petcock with reliability, you will have to remove a large panel from underneath the vehicle first. This can be a problem, as you will have to crawl under the vehicle to complete. You will have to completely remove the glove box in order to access the cabin air filter. This would have been much easier if there were a designated panel in the back of the glove box for access. The headlights on this vehicle can be difficult to replace. You will have to reach through the wheel well lining in order to access, and this can be tough as the lining can grow rigid and tight to the vehicle over time.
Some things are easier on the 2009 Nissan Armada SE. The brake fluid reservoir is easily visible in the engine bay. This will allow you to check and replenish the fluid level on a regular basis. Replacing the engine air filter is easy, as you only have to disengage a few fasteners for access to the filter. These fasteners are easy to disengage. Checking the oil level is easy to do, as the oil dipstick is easily accessible in the engine bay.
Hans Angermeier has produced over 100,000 videos showing drivers how to fix things on their cars. He has broad expertise on basic repair procedures covering the majority of cars on the road.