I did post a YouTube video on changing the bulbs in an LR3 which is identical to what you would do for an LR4. It is located in a previous thread about the CV bulbs. I think the thread was called" halogen bulb upgrade highly recommended."
LRNewbie,
Yes, this video was very helpful. Just a few things that are different on the LR4 (actually much better than the LR3) is that there are only 4 tabs on top of the grill to unlock it. You do need to pull kinda hard to get the bottom out, but it does come out if you apply firm, even pressure. I found the tabs can be a bit tough to get up on the light units, but if you use a screwdriver with cloth wrapped around it to shimmy them up, it works really well. Just hold the light and line up the holes and it comes off so easy.
The BIG difference with the LR4 is that there is no silly metal paperclip looking clips that hold the light in place, you basically just put it into the bay and turn to snap it into place. The LR3 video that baobay posted shows the LR3 metal clip holders that keep the light bulb in place, but the LR4 does not have that, so it makes it MUCH MUCH easier to sit the bulb in the slot and just turn it into place.
Seriously, I am the dumbest person when it comes to anything like this, but I found changing the low beams and high beams so easy. In fact, I took it apart twice because I got my high beams later. The fog lights were just as easy, but just be sure to pull firm and even on the fog light caps, use a long hexagonal screw driver, and order the three screws in the correct order they came out. In addition, and this is IMPORTANT, once you take off the fog caps, tape up the holes as it is very easy to lose screws and I have no clue how you would get them out since they seem to go inside the front bumper somewhere.
Send me a note if you need further help, as I can make a quick video or call you on the phone. Best of luck!