Applies to FlexFit® 1, 2 & 3 Adjustable Bases purchased prior to 2017.
Quick Answer
If your FlexFit® adjustable base is not working properly, most issues can be resolved by:
- Confirming the base has power
- Resetting the control box by unplugging it for 20 to 30 seconds
- Checking remote batteries or remote connectivity
- Making sure cables are securely connected
- Removing any physical obstructions preventing movement
This guide covers:
- FlexFit® and FlexFit®+ adjustable bases (sold 2012 to 2014)
- FlexFit® 1, FlexFit® 2 and FlexFit® 3 adjustable bases (sold 2014 to 2016)
Note: This article applies to older FlexFit® adjustable bases. If you have a newer FlexFit® Smart Adjustable Base, see Troubleshooting Your Sleep Number FlexFit® Smart Base.
Identify Your FlexFit® Adjustable Base
The easiest way to identify your adjustable base model is by looking at the remote.
FlexFit® and FlexFit®+ adjustable bases
FlexFit® 1, FlexFit® 2 and FlexFit® 3 adjustable bases
Common FlexFit® Adjustable Base Problems
My FlexFit® Adjustable Base Won't Turn On
FlexFit® and FlexFit®+ adjustable bases
- Verify the Power Down box is plugged into a working outlet.
- King-size systems have two Power Down boxes.
- Unplug the power cord.
- Wait 30 seconds.
- Plug the base back into a working outlet.
- Replace remote batteries if needed.
FlexFit® 1, FlexFit® 2 or FlexFit® 3 adjustable base
Check power
- Ensure the control box is plugged directly into a grounded wall outlet.
- Avoid using a surge protector whenever possible.
- Unplug the power cord.
- Wait 20 seconds.
- Plug the power cord back in firmly.
- Verify the red power switch is illuminated.
Check remote connection
- Pick up the remote and allow it to reconnect.
- Wait for the spinning Sleep Number logo to disappear.
- Test bed movement.
Missing Bed Position option?
If Bed Position is missing from the Home screen, perform a factory reset to reconnect the remote and base. Follow Sleep Number, Bed Position, SleepIQ or DualTemp Options Missing from Remote.
FlexFit® Adjustable Base Is Stuck Upright
This usually occurs when power is lost while the base is elevated.
FlexFit® and FlexFit®+ adjustable bases
- Unplug the power cord.
- Wait 20 seconds.
- Confirm the outlet works by testing another device.
- Plug the base back in.
- Try returning the base to flat.
If the base still won't lower:
- Press and hold the Learn button for 30 seconds.
- Once the base returns to flat, replace both 9-volt batteries.
If the issue continues, contact our adjustable base service provider at 855-447-3274.
FlexFit® 1, FlexFit® 2 or FlexFit® 3 adjustable base
If the base has power:
- Complete a factory reset.
- Reconnect the remote to the base.
- Test the Flat button.
If the base remains elevated and there are no visible obstructions, contact our adjustable base service provider at 855-447-3274.
FlexFit® Adjustable Base Won't Return to Flat
If your head or foot section raises but does not fully lower: Check these common causes
✅ Pillows or bedding blocking movement
✅ Mattress curling at the edges
✅ Bed positioned too close to the wall
✅ Split King bases touching each other
✅ Furniture or headboard interference
Recommendation: Leave at least 2 inches between the head of the base and the wall.
AF Power Loss / Return to Flat Error
FlexFit® 1, FlexFit® 2 or FlexFit® 3 adjustable base
If your remote displays an AF Power Loss or Return to Flat message:
- Press the Home button.
- Select: System > Notifications > AF Power Loss > Return to Flat
- Complete the Return to Flat process.
- Test all base functions.
If an error remains
- Record the error code.
- See:
Why Is My FlexFit® Adjustable Base Noisy?
Some sound during operation is normal.
Normal sounds
- Low humming from lift motors
- Light vibration from massage motors
- Brief motor sounds while adjusting positions
How to reduce noise
- Remove unused hardware or packaging beneath the bed.
- Check for items touching the frame.
- Add carpet squares or rubber cups under legs if on hard flooring.
- Slightly raise the head or foot section during massage mode.
Contact Support If You Hear
- Grinding
- Popping
- Metal-on-metal sounds
- Sudden changes in motor noise
Massage Feature Not Working
FlexFit®+ adjustable base
- Verify the Power Down box is plugged into a working outlet.
- Confirm the remote controls other bed functions.
- Replace remote batteries if necessary.
FlexFit® 3 adjustable base
- Inspect all visible cables under the base.
- Secure any loose connections.
- Look for cable damage.
If massage still does not work, professional service may be required. Contact our adjustable base service provider at 855-447-3274.
FlexFit® 3 Adjustable Base Lighting Troubleshooting
Nightstand Lamps Won't Turn On
Test the light controls
- Press Lights on the remote.
- Select the appropriate lamp.
- Press Enter.
A light bulb icon appears when the lamp is on.
Still not working?
- Verify the lamp switch is turned on.
- Confirm the lamp is plugged into a nightstand outlet on the control box.
- Verify the control box has power.
- Test the lamp in a standard wall outlet.
- Replace the bulb if needed.
FlexFit control box
Underbed Lighting Not Working
- Verify the control box has power.
- Confirm the red underbed lighting cable is securely connected.
- Check all extension cables.
- Inspect the light strip for visible damage.
- Reseat all lighting connections.
Frequently Asked Questions
Why won't my FlexFit® adjustable base move?
The most common causes are power loss, an unplugged control box, a disconnected remote, or a failed battery in the remote.
Why is my adjustable base stuck upright?
A power interruption while the base was elevated can prevent it from returning to flat. Resetting power and performing a return-to-flat procedure often resolves the issue.
Is it normal for a FlexFit® adjustable base to make noise?
Yes. Motor humming and massage vibrations are normal. Grinding, popping, or scraping noises are not normal and should be investigated.
Why won't my FlexFit® adjustable base massage feature work?
Check power, cable connections, and remote functionality. Some massage issues are caused by disconnected cables beneath the base.
How do I know which FlexFit® adjustable base model I have?
The easiest way to identify your FlexFit® adjustable base model is by comparing your remote to the images shown above.