This will only work with the BT4000 bases that featured the identical remote as pictured with the TILT option in the middle.Due to supply chain issues, you will receive the oval remote shown right but all of the functionality is the same. There will be two extra non functional buttons up top since your base does not have lumbar motors but everything else will work perfectly! If your original remote had the light button on the top row or any other button icons (such as a bluetooth icon borttom right) or words this may not work.