Cots & Cot Beds: Common Problems & How to Fix Them
Published 2026-08-01 · Updated 2026-08-01
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-01.
Our pick: the ClevaMama Waterproof Mattress Protector, Cotton Fitted Sheet for Baby Cot Bed - White - 60x120x15cm — the best Cots & Cot Beds we tested, from £16.99.
So you’ve invested in a cot or cot bed – fantastic! These essential pieces of furniture can bring a lot of joy, but like any baby equipment, they occasionally encounter little snags. This guide focuses on helping you quickly diagnose and resolve common issues that might arise with products like the ClevaMama Waterproof Mattress Protector, My Babiie Travel Cot, or the SnuzPod crib – things that could be affecting your little one's sleep and comfort. Remember, if you’re unsure about any repair, or if the problem persists beyond simple checks of power, connections, and basic adjustments, it’s always best to consult a qualified professional.
See the full range in Cots & Cot Beds.

#1 Pick
ClevaMama Waterproof Mattress Protector, Cotton Fitted Sheet for Baby Cot Bed - White - 60x120x15cm- Brushed Cotton
- 1 year
£16.99
Pros
- Brushed cotton top feels soft against baby’s skin
- Waterproof polyurethane backing protects the mattress
- Fitted design stays securely in place all night
Cons
- White finish shows staining more visibly than darker colours
#2 Pick
My Babiie Lightweight Travel Cot with Carry Bag, Grey Elephants- Polyester Fabric
- 1 year
£51.08
Pros
- Lightweight fold-flat design with carry bag for travel
- Includes a padded, breathable mattress
- Quick pop-up assembly with no tools needed
Cons
- Fabric sides mean less insulation than a solid wood cot

#3 Pick
SnuzPod 4 Baby Bedside Crib - Newborn Next to Me Crib with Zip-Down Mesh Windows and Wheels, Natural- Solid Wood
- 2 years
£224.99
Pros
- Zip-down mesh windows for easy nighttime access
- 6 height settings to line up with most bed heights
- Comes with a breathable mattress included
Cons
- 9kg weight limit means an earlier transition to a standalone cot
#4 Pick
Obaby Bantam Space Saver Cot with Adjustable Base, White- Solid Wood
- 1 year
£129.09
Pros
- Compact footprint suits smaller nurseries and box rooms
- 2 adjustable mattress base heights
- Solid wood frame from an established UK nursery brand
Cons
- Mattress sold separately
FAQ
My cot bed won’t start – it just doesn't turn on.+
Firstly, check the power outlet to ensure it’s functioning correctly; you could try plugging another device into the same socket. Then, verify that the lead is securely plugged into both the cot bed and the mains supply. If everything appears connected properly, a reset might help – unplug the cot bed for 30 seconds before plugging it back in.
The mattress isn’t sitting flat on the base.+
Inspect the base itself for any signs of damage or unevenness. Ensure that all locking mechanisms are engaged correctly, as a partially released mechanism can cause the mattress to sit high. Check that the bed slats aren't warped or damaged – if so, this could be affecting support.
My cot bed is making a rattling noise.+
Rattling noises often originate from loose components within the mechanism. Gently shake the base to identify the source of the vibration and try gently adjusting any levers or locking mechanisms that may be causing friction. If the noise persists, it's best to consult a qualified engineer.
The mattress is leaking fluid.+
Immediately stop using the cot bed. Check for signs of damage to the mattress itself – small tears can allow moisture to seep through. Ensure that the mattress cover is properly fitted and not damaged, as this could be contributing to the issue.
The battery isn’t charging.+
Confirm the charger is correctly plugged into both the cot bed and a functioning mains outlet. Inspect the charger cable for any visible damage or fraying; a damaged cable can prevent charging. Try using a different compatible charger to rule out an issue with the original.
The mechanism is difficult to operate.+
Clean the moving parts of the cot bed's mechanism thoroughly, removing any dust or debris that could be causing friction. Lubricate the joints gently with a silicone-based lubricant – avoid using oil-based lubricants which can damage plastic components. Ensure nothing is obstructing the movement.
The mattress feels uneven.+
Check that all the slats are correctly positioned and securely fastened to the base of the cot bed. A single loose or damaged slat can significantly affect the support provided by the mattress. Replace any broken or warped slats.
There’s a blockage in the airflow.+
If your cot bed incorporates ventilation, check for blockages such as dust or debris accumulating within the vents. Gently clean these with a soft brush to restore proper airflow and prevent overheating. Ensure nothing is obstructing the vent openings.
The colour of the mattress has faded.+
Mattress colours can fade over time due to exposure to sunlight. While this isn’t necessarily a fault, it can affect the aesthetic appearance. Regularly rotate the mattress to distribute wear evenly and minimise fading; consider using a shade cloth when placing the cot bed in direct sunlight.
The locking mechanism won't stay locked.+
Ensure the locking mechanism is fully engaged – sometimes it can feel like it’s locked but isn't. Check for any damage to the locking pin or lever; a damaged part might not hold securely, and replacement parts may be needed.
In depth
The cot won’t turn on/start
There are several relatively simple reasons why a cot bed or travel cot might fail to power up initially, or simply stop functioning after working correctly. Often, the issue stems from an obvious oversight rather than a complex mechanical failure. Begin with a thorough check of the power source and connections. Ensure the mains plug is securely fitted into the socket, and that the socket itself is receiving power – test it with another device if possible. Inspect the lead for any visible damage; cuts, fraying or kinks can interrupt the electrical flow. Check the fuse in the appliance itself. Many smaller cots have a removable fuse accessible from behind the unit. Replace it with a fuse of the exact same amperage rating before proceeding.
Next, verify that the power switch is fully engaged. It's surprising how often these switches can become stuck in a partially ‘on’ position. A slight wiggle might resolve this. If your cot bed incorporates a battery backup, check that the batteries are correctly installed and have sufficient charge. Low battery levels can sometimes prevent the primary power source from engaging properly. Look for any indicator lights on the unit – are they flashing abnormally? This could offer an initial clue to the problem’s cause. Finally, if the cot bed has a reset button (often small and recessed), press it firmly. This simple action can often resolve temporary electrical glitches. If you've completed all of these checks and the cot still won’t turn on, discontinue use immediately and consult with a qualified electrician or the manufacturer for further assistance. Electrical faults can pose a serious safety risk, and attempting to diagnose or repair them yourself could be extremely dangerous.
The cot is underperforming – not adjusting correctly
Many adjustable cot beds are designed to provide a range of sleep positions, but they occasionally become sluggish or unresponsive. The most common reason for this is simply accumulated dust and debris affecting the mechanism. Carefully clean the adjustment levers and any moving parts with a soft, dry cloth. Ensure there are no obstructions preventing smooth movement – small toys, bedding folds or even loose clothing can interfere with the cot’s operation. Lubricate the joints with a silicone-based lubricant (available from most DIY stores) sparingly; avoid using oil-based lubricants as these can damage plastic components.
Check that the adjustment mechanism is not binding. Sometimes, slight misalignment can cause resistance. Gently try to move the bed through its full range of motion to identify any areas where it feels stiff or stuck. If the issue persists after cleaning and lubrication, there may be a problem with the internal spring system or other moving parts. Again, due to the complexity of these mechanisms and the potential for injury, it is essential to seek professional advice from a qualified engineer or the manufacturer’s customer support team if you suspect an internal fault.
Unusual noise coming from the cot bed
A rattling, squeaking, or groaning sound emanating from your cot bed can be concerning, but often resolves with basic checks. Inspect the wheels and castors – are they rubbing against anything? Even a small obstruction can generate significant noise. Ensure that the mattress is properly secured; a shifting mattress can cause movement within the frame, leading to rattling. Check for any loose screws or bolts on the frame itself, tightening them gently if necessary.
Listen carefully to pinpoint the source of the noise – is it coming from the adjustment mechanism, the wheels, or the mattress area? If the sound seems to originate from the adjustment levers, try lubricating them with a silicone-based lubricant as described above. Be extremely cautious when adjusting the bed while it’s making unusual noises; you could exacerbate the problem. Persistent, unexplained noises often indicate an issue with the internal frame or suspension system and should be examined by a qualified engineer before continued use.
The cot bed is leaking
Leaks from a cot bed are rarely due to a major structural failure but frequently result from minor damage that has allowed moisture to enter. Immediately cease using the cot bed and remove all bedding and accessories. Carefully inspect the mattress cover, seams, and any waterproof layers for tears or punctures. If you identify any damage, try applying a waterproof sealant specifically designed for fabrics; however, this is only a temporary solution.
Check the base of the cot bed for signs of dampness. Look for water stains or discoloration on the frame itself. A small leak in the base could be causing damage to the surrounding area. If you discover evidence of significant dampness, discontinue use immediately and contact a qualified tradesperson – particularly if there’s an electrical component involved – to assess the situation and prevent further damage. Never attempt to repair a leaking cot bed yourself as this can create a safety hazard.
The cot is not charging (if applicable)
Travel cots with integrated charging facilities often rely on USB-C ports for power delivery. The most common reason for failure here is an issue with the charging cable or adapter. Try using a different USB-C cable and adapter to rule out a faulty connection. Ensure that both are fully functional by testing them with another device. Check that the charging port itself isn't blocked – debris or dust can prevent proper contact.
If your cot bed has an indicator light for charging status, observe it carefully. Is the light flashing intermittently? This could indicate an unstable power supply. Make sure you’re using a USB-C charger capable of delivering sufficient power to charge the device. Some devices require higher amperage chargers than others. If the problem persists after checking the cable and adapter, there may be an internal fault with the charging circuitry. For any concerns regarding electrical components within the cot bed, it's imperative to consult a qualified electrician or the manufacturer’s technical support team before attempting further troubleshooting.
Mattress issues – sagging or unevenness
While not strictly part of the cot frame itself, mattress performance is crucial for comfort and stability. Sagging can develop over time due to consistent weight distribution and material breakdown. Check the entire surface of the mattress for even compression. If you notice a particular area that’s significantly lower than others, this could indicate a worn spot.
Ensure the mattress is correctly positioned within the cot frame – it should be fully supported and not shifting around. A poorly fitted mattress can contribute to uneven wear and sagging. Consider replacing the mattress if it’s old or showing signs of significant wear and tear. Mattress replacement is a necessary maintenance item for optimal comfort and safety.
Bedding causing friction or blockages
Sometimes, bedding can cause friction that hinders smooth operation. Ensure your cot bed's wheels or castors are free from tangled sheets, blankets or straps. Carefully inspect the fabric of your bedding – loops or rough edges could be catching on the mechanism. Remove any items that might be obstructing movement. Regularly check for excessive wear and tear in the bedding, replacing it if necessary to prevent friction issues.
The cot bed's stability is compromised
A wobbly or unstable cot bed can pose a serious safety risk, particularly for young children. Check all connections – screws, bolts, and joints – ensuring they are tightened securely. Inspect the frame for any signs of damage or warping. A warped frame will invariably lead to instability. If you identify any structural issues, discontinue use immediately and contact a qualified engineer or the manufacturer’s customer support team. Never attempt to repair a structurally compromised cot bed yourself as this could create a hazardous situation.
Contacting Support
If after completing all of these checks, the issue persists, it is crucial to seek professional assistance. For any concerns relating to electrical components, consult with a qualified electrician or the manufacturer’s technical support team immediately. Do not attempt to diagnose or repair complex problems yourself, as this could pose a serious safety hazard. The manufacturer will be best placed to identify and resolve any underlying issues, ensuring your cot bed continues to operate safely and effectively.