Turned on the X this morning and the left low beam malfunction message popped up on my display. 2007 4.8. I saw that the low beam was out on the drivers side. Is there a bulb I could by from a local pep boys? How do I put it in? Is there a diy?

Also not the same scenario but I also have a left rear malfunction display message for the tailgate light but it works fine. Just pops up about twice a day. Wired part is when I wash the X and water goes in the tail light, the message doesn't appear.

Any help would be great! Thanks