Quick answer: If the underbed light on your Sleep Number® adjustable base will not turn on, first check the remote batteries, Remote Lock, and base power. If those checks do not solve the problem, inspect the underbed light cable for a loose connection or damage.
This guide applies to Sleep Number adjustable bases with a remote sold in 2026 or later.
If you have a different base, find the troubleshooting guide for your model.
Common underbed light problems
- The underbed light does not turn on when you press the underbed light button on the remote.
- The light works on one side of the bed but not the other.
- The remote backlight does not turn on.
What you need
- Two adults.
- Fresh batteries for the remote.
- Your Sleep Number remote.
- White air chamber caps. If you do not have caps, visit a Sleep Number store or order air chamber caps online.
Before you move the adjustable base
- Check the remote batteries. Press any button. If the remote backlight does not turn on after you install fresh batteries, contact us for help with the remote.
- Turn off Remote Lock. If the backlight flashes three times when you press a button, press and hold the Lock button for five seconds.
- Check base power. Make sure the base is plugged in and the light on the power supply is green. If the light is off, contact us.
Step 1: Unplug and move the base safely
Two adults are required. Do not try to lift or hold the base by yourself.
- Adjust both sides of the bed to a Sleep Number setting of 100.
- Unplug the base from the wall outlet.
- Disconnect the air hoses and cap both air chambers.
- Remove the mattress straps, then lift the mattress off the base.
- King size bases: Remove the bed links at the head and foot of the base.
- With one adult on each side, carefully place the base on its side. One person must hold it steady while the other person checks the connections.
Step 2: Check the underbed light cable
Find the underbed light cable beneath the base. Make sure it is fully connected to the control box. Check the cable, plug, and light for cuts, pinched areas, loose parts, or other damage.
- If you see damage, do not use the light. Contact us for help.
Step 3: Reassemble and test the base
- Carefully lower the base to the floor.
- Reconnect the bed links if you removed them.
- Place the mattress on the base and secure the mattress straps.
- Remove the air chamber caps and reconnect the air hoses.
- Plug the base into the wall outlet.
- Press the underbed light button on the remote to test the light.
If the underbed light still does not work
Contact us if the light still does not turn on. Be ready to share your bed model, any error messages, the steps you completed, and whether the problem affects one or both sides of the bed.
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Frequently asked questions
Why is my Sleep Number underbed light not working?
The most common causes are weak remote batteries, Remote Lock, no power to the base, a loose cable, or a damaged cable or light.
How do I turn on the underbed light on my Sleep Number adjustable base?
Press the underbed light button on the remote.
Why does my Sleep Number remote flash three times?
Three flashes may mean Remote Lock is on. Press and hold the Lock button for five seconds.
What should I do if only one underbed light works?
Check the cable connection and look for damage on the side that is not working. If the light still does not turn on, contact us and explain which side is affected.