Land Rover blowing cold on passenger but not driver, where is the blend door actuator located?

Yep, this happens when the drivers side blend door actuator goes out. Here is the location so you can swap it out and fix the problem. The actuator is on the drivers side so you will need to remove the lower part of the dash on that side with the metal brace as well to gain access. Once the part is replaced reset the HVAC system so it will calibrate. this guide will show you how, also check out the image below to help do the job.

https://www.2carpros.com/articles/step-by-step-guide-to-reset-your-cars-hvac-system-an-essential-for-every

Check out the images (below). Let us know how it goes.