Rear tail lights

What ever happened to just changing a bulb? This is not like the old days. Can the sensors be adjusted after I put the cover back on? The reason I ask is because I cannot perform this on level ground. It looks like I'll have to take it to Toyota after I replace the tail light. This is both helpful and discouraging at the same time. Goodbye shortcut.

Thanks, it was very helpful. I can put the light in then I'll have Toyota do the rest.

I just got the light today and it looks so simple as an assembly. However, I cannot see any other way of installing it then a very long procedure of removing the rear bumper cover. It looks like a years work. Other than what you have given me it looks like there is nothing further that you can do. Thanks

It took me less than an hour to install the light. As I started at the right wheel well there was a black lip that was under the Quarter panel and as I was removing the retainer clip the rear cover looked like it could unsnap. I pulled on it and it unsnapped enough to where I could see the entire rear light. I removed the retainers under that portion of the cover and I was able to remove the old light and installed the new one. After which I snapped the cover back and replaced the retainers. I never touched the sensors nor were there any in that area. My total cost of the used tail light was $109.00. And less than an hour to install. I cannot understand why the dealer quoted me $740.00 for the job.