CTL2205786 - Pride CM310M-D3-2 Control Box for the VivaLift! Radiance PLR3955 Lift Chair

When your VivaLift! Radiance won't respond even with a good remote, or only some of its functions still work, the control box is usually the part that has failed. This is the genuine Pride Mobility replacement control box, part number CTL2205786, built by Moto Motion (model CM310M-D3-2) for the VivaLift! Radiance PLR-3955 power lift recliner.

The control box is the hub of the chair's electronics. It takes commands from the hand control and sends power to each motor through five color-coded 5-pin ports: yellow for the headrest, gray for the lumbar, blue for the back, green for the lift base, and black for the hand control. Three 2-pin connectors run the heat and cup holder/LED accessories, and a DC barrel connector feeds the chair's wireless charging feature. Power comes in through a 2-pin connector rated at 29V DC, 3.0A.

CM310M-D3-2 is the current version of this box and supersedes several earlier CM310 models, including CM310M-D3-1, CM310K4C2-1, CM310K4C, CM310K4C2, CM310K-R, CM310K3-R, CM310-K3C-R and CM310L. Because each port is color matched to its cable, swapping the box is a matter of unplugging the old unit and plugging every cable into the same color on the new one. Taking a photo of the wiring before you start makes it even easier.

Have an older CTL1908248 control box? Radiance chairs with model codes HOB and HOC were built with this control box. Earlier chairs with model code HOA were built with the CTL1908248 control box and CTL1908249 hand control, and those two parts only work with each other, so this box can't replace a CTL1908248 by itself. If your chair is an HOA that still has its original parts, you need the KIT2205810 hand control and control box update kit, which replaces both parts.

Related parts: The CTL2106501 12-button hand control plugs into this box's black 5-pin port. If your Radiance has the massage feature, it uses the CTL2205154 (CM310M-D3-3) heat/massage control box instead.

Fitment tip: Check the model label on your chair to confirm it's a PLR-3955 (PLR3955LT, PLR3955M, PLR3955PW or PLR3955S), and compare the label on your existing control box to the CM310 model numbers above before ordering. If your chair is a different VivaLift! model, contact us with your serial number and we'll help you find the right part.