KitchenAid Mixer Troubleshooting: How To Fix 13 Common Issues 

I remember kneading dough for three loaves of bread in my KitchenAid stand mixer when suddenly it stopped. 

Stumped, I switched the mixer off and then on again, unplugged it, and plugged it again, but it won’t run.  The motor head was also hot. 

That was when I realized that knowledge of KitchenAid mixer troubleshooting is vital for us users.

Worried and with no other option, I continued to knead the dough by hand. After which,  I switched the mixer on again after around 20 minutes.  Relief! It ran, and the dough hook spun smoothly.

Brand name notwithstanding, stand mixer troubles do happen.  But you don’t have to wait for them to crop up.  Some of them are preventable if you know how. 

We shall tackle it in this guide to troubleshoot common KitchenAid stand mixer issues.

First, we’ll identify the problems and move on to possible causes and their solutions.

This guide will also point you to resources you can refer to if you prefer to perform repairs.

Then, we’ll give you helpful tips to prevent problems from arising.

Is your KitchenAid mixer giving you trouble? Read on.

Can KitchenAid Mixers Be Fixed?

Let’s address whether you can fix a KitchenAid stand mixer before discussing problems and solutions.

Well, it depends on the issue.  There are some you can prevent or fix; some repairs might require a technician, and for others, the only solution is replacement. 

The reality is wear and tear can take a toll on any appliance, and its life also depends on how you care for it.

Let’s start with the first common stand mixer issue…

1. Mixer Won’t Turn On

Often, the answer to most power issues is simple.  Here’s how to deal with them:

• Cause: Frayed or damaged cord.
• Solution: Inspect the cord for signs of damage, like fraying or exposed wires. If there is damage, a professional or KitchenAid service can replace it.

• Cause: Not fully plugged in or loosely plugged.
• Solution: Check that the plug is snug.

• Cause: Malfunctioning outlet.
• Solution: Plug a different machine into the outlet to check if it works. Or, use another outlet.

• Cause: Speed Control Lever Left Midway. Some mixers won’t start if the lever is left halfway between speeds. 
• Solution: Ensure the speed lever is in “OFF” before restarting the mixer.

• Cause: Brushes Inserted Incorrectly. A brush not properly inserted is one of the most common causes of the mixer not turning on. 
• Solution: See the video below to learn how to check and adjust it.

Pro Tip:

If everything fails, check if your home’s circuit breaker hasn’t tripped.

If the problem persists, contact KitchenAid support or a qualified repair technician.  

Call KitchenAid if your stand mixer is still under warranty—it’s always worth checking before paying for repairs.

2. Overheating During Use

When your precious mixer overheats, you can start to worry or panic. You may wonder if the motor is burning.

The best way to deal with the issue is to check for the reason so you know how to best address it.

Below are possible causes and their solutions:

• Cause: Running the mixer for extended periods can strain the motor. 
• Solution: Avoid continuous use at high speeds to prevent overheating. Instead, take breaks every few minutes.

• Cause: Dough is too heavy. Thick bread doughs or large batches can overload the mixer.
• Solution: Mix heavy dough in smaller batches to avoid overloading. Stick to the recommended speed settings for the type of dough or batter you’re making. (Hint: Kneading dough? Stick to speed 2). 

• Cause: Motor vents clogged with dust or flour can’t stay cool properly.
• Solution: Check if the ventilation slots at the back of the mixer are not blocked. Remove any dirt obstructing airflow with a small brush or vacuum attachment.

Pro Tip 

Check for overheating early. If the motor sounds strained or feels warmer than usual, stop mixing immediately and let it rest. Addressing these early signs can prevent the mixer from shutting off mid-recipe.  

3. Speed Control Problems

1. The Mixer Won’t Change Speeds

A mixer stuck on one speed and won’t respond to the speed control lever can be due to a faulty speed control board or wiring.  

Try resetting the electronic components by unplugging the mixer for a few minutes. If the issue persists, try the following:

• Inspect the speed control lever by moving it back and forth to ensure it isn’t jammed by food and debris.  If it seems stiff or loose, it may need replacement or adjustment.
• Open the back panel and check for disconnected or damaged wires. Reconnect the loose wires you find. If you aren’t comfortable doing this, call KitchenAid or a professional. 
• If none of the above solves the issue, replace the speed control board.  Contact KitchenAid or a professional repair service.

2. Speed Fluctuations

If your mixer fluctuates between speeds, a worn speed control lever or some internal components may be failing.

3. Slow Speed Response

Damage or wear to the speed control mechanism might cause your mixer to respond slowly to speed adjustments.

4. Unusual Noises When Changing Speeds

Grinding or clunking sounds when adjusting the speed could indicate worn or misaligned internal gears or components.

5. No Speed at All

Sometimes, the mixer may not respond to the speed control lever. It is usually due to failure of the speed control board or an electrical issue.

Potential Causes:

• Faulty speed control board
• Damaged or loose wires can disrupt the electrical connection.
• Internal components, such as the speed control lever or gears, are worn out.
• Overheating may shut down or limit your mixer’s ability to change speeds as a safety measure.

Troubleshooting Steps

• Reset the Mixer: Unplugging the mixer for a few minutes may help reset the electronic components.
• Inspect for Damage: Check the speed control lever and wiring for any signs of damage.
• Seek Professional Help: If basic troubleshooting doesn’t resolve the issue or you are uncomfortable performing repairs, consult KitchenAid support or a qualified technician. 

4. Attachment Not Spinning Properly

If you spot any of the following, it could be a sign that the mixer accessory is not working properly.

• Inconsistent Mixing: Ingredients that stick to the sides or stay unmixed are signs of poor mixing. 
• Solution: Make sure you lock the attachment securely onto the beater shaft. Push it firmly upward until it clicks into place.  

• Unusual Noises:  Grinding, squeaking, or rattling sounds can be due to failing gears or misaligned attachments. 
• Solution: Turn off the mixer and inspect that the attachment is aligned.  If the noise continues, it could be worn internal gears. Contact a professional or KitchenAid. 

• Wobbling Attachments:  Loosely attached accessories can be wobbly or unstable.
• Solution: Check if the beater shaft or the attachment hub is aligned. Remove and reattach the accessory and ensure it’s firmly locked into place.  

• Slow or Stalled Movement:  An attachment that spins slowly or stops mid-mix is often overloaded or misaligned. 
• Solution: Make sure the attachment fits securely. If the problem persists, inspect the gears for wear, which can prevent smooth spinning.  

5.  Mixer Not Spinning

Why won’t my mixer spin?  I have seen that question on online forums.

Here’s how to determine what’s causing your mixer not to spin and how to fix it.

No Power To The Mixer

• Cause: Sometimes, the problem is the mixer not receiving power. It happens if the outlet is defective, the cord is damaged, or the plug is loose.
• Solution: Plug the mixer properly. Check that the outlet is functioning by testing another device. Inspect the cord for any visible damage. If damaged, replace it.

Overloaded Mixer

• Cause: Overloading the mixer with too much dough or batter can cause it to stop spinning. Some KitchenAid mixers have an overload protection that stops the motor if it overheats.
• Solution: Let the mixer cool down for 15-30 minutes before trying again. When you restart, use smaller batches to prevent overloading.

Defective Speed Control 

• Cause: The speed control system may be failing. If the control knob doesn’t change speeds or feels loose, it may not be properly regulating power to the motor.
• Solution: Tighten or repair the speed control knob if needed. If it’s still malfunctioning, consider taking it to a professional or contacting KitchenAid for repair.

Worn or Broken Gears

• Cause: The planetary gears inside the mixer transfer power to the attachment head. Over time, these gears may wear out or break, especially after heavy use.
• Solution: Replacing gears is a more involved repair and requires opening the mixer. A professional can handle it if you can’t.  KitchenAid sells replacement gear.  

Damaged Motor or Brushes

• Cause: If the motor or carbon brushes (which conduct electricity within the motor) are defective, the mixer may stop spinning.
• Solution:  Replacing the carbon brushes is an easy fix.  Check the manual or online resources for guidance on replacing them. If the motor itself has failed, you may need professional help.

Loose or Broken Drive Pin

• Cause: The drive pin connects the gears to the beater shaft.  The attachments may not spin if it’s loose or broken,  
• Solution: Open the mixer head and check the drive pin. If it’s loose, tighten it. If it’s broken, you’ll need a replacement.

6. The Bowl Won’t Lock in Place

Causes and Solutions:

• Misaligned Bowl: Sometimes, the bowl isn’t sitting correctly on the base, which prevents it from locking in place.
• Solution:  Reposition the bowl. Ensure it lines up with the grooves or notches in the locking mechanism.

• Broken Locking Tabs or Base
• Solution: Check the bowl’s tabs and the mixer base for wear or damage. You may need to replace the bowl if the tabs are broken.  Try pressing the bowl more firmly into place for minor wear—it might need an extra nudge to lock securely.

• Obstruction in the Base:  Sometimes, crumbs, flour, or debris build-up can obstruct the locking mechanism.
  Solution: Clean the base and bowl tabs with a damp cloth. 

Pro Tip:

If the bowl still doesn’t lock despite your best efforts, try rotating it slightly in the opposite direction and then back again—sometimes, it just needs a little jiggle to engage the lock.

And if your mixer has seen better days, check with KitchenAid for replacement parts or support.

7. Mixer Is Noisy or Makes Grinding Sounds

Does your KitchenAid stand mixer wake up the entire household?

Here are the reasons and what you can do to quiet it down:

• Worn Gears:  Damaged gears can make grinding or clunking noises.
• Solution: Open the mixer’s motor housing (if you’re comfortable) and check the gears. Replace stripped ones. If DIY repairs aren’t your thing, contact a technician or KitchenAid support for help.

• Dry Internal Components:  Dry gears or bearings can cause a loud, screeching noise. Grease keeps your mixer running smoothly but can dry out over time.
• Solution:  Apply food-safe grease to the gears or have a professional service the mixer if you’re unfamiliar with the process. Regular lubrication can prevent future noise problems.

• Motor Problems: A high-pitched whining or rattling noise can indicate the motor is struggling. The motor may be overloaded or damaged.
• Solution:  Reduce the load, and don’t mix heavy dough at high speeds. If the motor continues to make noise or runs inconsistently, it may need repairs or replacement.

8. Dough Hook or Beater Scrapes the Bowl

An odd, irritating sound is a sure sign that the beater or dough hook is scraping the bowl. Damage to the accessory and the bowl can occur if not addressed.

Here’s why scraping happens and how to solve it:

• Incorrect Bowl Height: The attachment may scrape the bowl or fail to mix the ingredients properly if it sits too low or too high.
  Solution: Adjust the bowl height.  For tilt-head models, lift the head and locate the screw near the base of the mixer’s arm. For bowl-lift models, the screw is usually near the bowl support arms. Turn the screw clockwise to raise the attachment or counterclockwise to lower it. Adjust it until the attachment clears the bowl by about the thickness of a dime.

• Worn Attachments: Warped accessories can graze the bowl surface.
  Solution: Inspect the attachment for wear, like bent edges or chipped coating. Replace it if it’s damaged. Using worn attachments results in uneven mixing.

9. Oil Leaking from the Mixer

Old grease breaking down is the reason for oil leaks Here’s why it happens:

The gears of KitchenAid mixers are packed with food-safe grease to keep it running smoothly. Over time, grease separates into oil and solids, especially if the mixer is unused for long periods. The oil then leaks from the motor housing.

Here’s how to get rid of those troublesome oil leaks:

Start by cleaning the leaked oil with a cloth. Then, reapply fresh grease (seek professional help if you can’t do it).

This is how you do it:

1. Unplug the mixer and open the motor housing (refer to your mixer’s manual for guidance).
2. Remove the old, separated grease with a clean cloth or scraper.
3. Apply new food-safe grease to the gears.
4. Reassemble the mixer and run it on low speed for a few minutes to distribute the grease evenly.

Pro Tip:

To prevent future leaks, use your mixer regularly—even short runs help keep the grease from separating. Store it in a cool environment, as heat can accelerate grease breakdown.

10. Mixer Shakes or Moves on the Counter

 Dancing, walking, or shaking on the counter is among the most common complaints about KitchenAid mixers. 

Here’s how to identify the causes and fix them. 

• Unbalanced Load: If ingredients are added unevenly or clumped on one side, it can throw off the mixer’s balance and cause it to wobble.
  Solution: Distribute the ingredients evenly in the bowl before starting the mixer. Scrape down the sides as needed to ensure everything is balanced during mixing. Start at a low speed and gradually increase it to avoid sudden jerks.
• Heavy Mixing Jobs:
  Kneading dense dough or mixing thick batters at high speeds can make the mixer shake—especially if it’s unsecured to the surface.
  Solution: Place the mixer on a stable, flat surface, ensure the rubber feet (if the mixer has one) are clean, and grip the counter. Use lower speeds (stick to speed 2 for kneading) and give the mixer breaks to prevent motor strain for dense doughs.

Pro Tip:

If your mixer moves, place a non-slip mat underneath it for extra grip. 

11. Mixer Won’t Maintain Speed Under Load

The reason your mixer slows down when loaded can be either of these two causes:

1. Worn Motor Brushes: Damage to motor brushes (which transfer power to the motor) causes inconsistent speed, especially under heavy loads.
   Solution:
   • Unplug the mixer and remove the motor housing.
   • Locate the motor brushes on each side of the motor.
   • If worn or short, replace them with new ones (you can usually find replacements through KitchenAid).
   • Reassemble the mixer and test it.
2. Faulty Speed Control Board:  If your mixer still can’t maintain speed, the speed control board that regulates the motor’s power may be the culprit.
   Solution: Inspect the control board for damage, such as burned components. If something seems off, it’s best to contact a technician or KitchenAid support for help with repairs or replacements.

Pro Tip:

Regularly using your mixer helps keep the motor in good shape by preventing parts from stiffening or wearing unevenly. 

12. KitchenAid Mixer Loose Head (Tilt-Head Models)

A loose KitchenAid stand mixer head can be worrisome. But you can take steps to fix it once you’ve identified the cause.

Causes:

1. Locking Mechanism Isn’t Engaged Properly:
   • The mixer head may not be fully pushed down, preventing the lock lever from securing it.
2. Worn, Bent, or Damaged Locking Pin/Latch:
   • The pin or latch wears out over time and does not lock the motor head securely.
3. Loose Internal Screws:
   • Internal screws become loose with use and affect the stability of the mixer head.

Fixes:

1. Check the Lock Lever
   • Ensure the head is firmly pushed down and the lock lever is fully engaged. The lever might need adjustment or replacement if it doesn’t stay in place.
2. How to Determine if the Lock Lever Needs Adjustment
   A lock lever in good condition should hold the motor head securely during use. If the head is loose, look for the following signs that the lock lever may need adjustment:
   • The Head Wobbles During Mixing:
     • Even when the lock lever is engaged, the head bounces or shifts with heavier doughs.
   • The Lever Won’t Stay in the Locked Position:
     • The lever slides back to the unlocked position or feels loose when engaged.
   • Mixer Head Doesn’t Fully Lower or Align:
     • The head sits slightly above the base, creating a gap even when the lever is locked.
   • Lever Feels Stiff or Too Loose:
     • If it’s difficult to move the lever, or if it moves with no resistance, the locking mechanism might be misaligned or worn.
3. How to Adjust the Lock Lever
   If you determine that the lock lever needs adjustment, follow these steps:
   • Unplug the Mixer:
     • Make sure the mixer is unplugged before making any adjustments.
   • Inspect the Locking Mechanism:
     • Tilt the mixer head back and check the latch where the lever engages. Look for dirt, food particles, or wear on the pin or lock. Clean as needed.
   • Tighten the Lock Lever Screw:
     • Some models have an adjustment screw or nut near the lever. Use a screwdriver or wrench and turn it slightly to tighten the tension on the lever. Test it to ensure it stays locked.
   • Test the Lock:
     • After tightening, engage the lever and try to wiggle the head. If the head still moves, the latch may need replacement, or there could be internal wear.
4. Tighten the Hinge Pin:
   • Use a flathead screwdriver or hex key (depending on your model) to tighten the hinge pin, which keeps the head and base aligned.
5. Inspect the Locking Mechanism:
   • Examine the lock lever and latch for signs of wear or bending. These parts may need replacement if damaged. 
6. Tighten Internal Screws:
   • Unplug the mixer and carefully remove the trim band (the decorative metal strip) to access the internal screws. Tighten any loose screws to secure the head, but do not overtighten as it may cause misalignment.
7. Service the Mixer if Necessary:
   • Professional repair may be required if these steps do not resolve the issue or if the locking mechanism appears severely worn.

13.  Beater Stuck On The Beater Shaft

Signs That Your Beater Is Stuck

• The first and most obvious sign is when you try to detach the beater, it won’t budge.
• If your beater struggles to turn or you notice unusual resistance, it might be stuck.

Common Causes and How to Fix Them

1. Food Debris or Dried Mixtures:

• Cause: Sometimes, bits of food or dried batter can get stuck between the beater and the shaft. 
• Solution: First, unplug your mixer for safety. Gently wiggle the beater back and forth to loosen it. Clean around the base of the beater with a damp cloth to remove any food deposits.

2. Misalignment:

• Cause: A misaligned beater can create tension, making it hard to remove.
• Solution: Check to see if the beater is misaligned. If so, gently twist and pull while applying a little downward pressure. Once it’s off, ensure it’s aligned when reattaching it.

3. Worn Beater Shaft:

• Cause: Worn down beater shaft makes it hard to detach the beater.
• Solution: Look closely at the beater shaft for any signs of damage. If you see excessive wear, you may need to replace the shaft or consult a professional for help.

4. Rust or Corrosion:

• Cause: If your mixer has been exposed to moisture, rust can form around the beater shaft.
• Solution: Use a bit of food-safe lubricant on the shaft after cleaning the area thoroughly. If the rust is severe, it may require more in-depth cleaning or professional assistance.

Pro Tip:

To prevent the beater from getting stuck, I clean the beater and the shaft after each use. I use a damp cloth to wipe down food debris stuck to it.  Doing this saves me time and hassle later.

ALERT!!

Some troubleshooting steps for a KitchenAid stand mixer require some knowledge or skill to look inside the mixer. 

If you are comfortable doing DIY repairs instead of calling a technician, refer to this YouTube channel for guidance.

Keep Your KitchenAid Mixer in Top Shape: Easy Prevention Tips

I’ve learned that preventive care keeps my KitchenAid mixer running smoothly. Here are some easy tips for preventing common mixer problems.

1. Regular Cleaning and Maintenance

Clean your mixer after each use.  Here’s how to do it:

•  Wipe the mixer with a damp cloth right after use. It only takes a minute.
•  Wash the attachments thoroughly to prevent food from sticking to them
•  Occasionally, remove the attachment hub and check for any food buildup.  A quick wipe prevents food from sticking.

2.  Regular Lubrication

Lubricate your mixer around once or twice a year.

Open the motor housing to check the grease.  Replace it with food-safe grease if it has dried up.  Greasing is essential for your mixer to run smoothly.

3. Avoid Overloading the Mixer

 –  Always check the user manual for the recommended speed settings for each attachment to avoid any unnecessary strain on the motor.

–  When working with very dense doughs, mix in smaller batches and give the mixer breaks to prevent overheating.

4. Store Attachments and Cords Correctly

• I store my attachments in a designated drawer to prevent bending or damage. It’s a small effort that pays off.
• After use, unplug the mixer and coil the cord neatly to prevent any tangles.

5. Do Routine Checks

• Check for Loose Parts:  Make it a habit to look for any loose screws or worn gears whenever you clean. If something seems off, address it before it becomes a bigger issue.
• Inspect the Power Cord: Now and then,  inspect the power cord for signs of fraying.  Replace it if you notice any damage.

6. Use Accessories Compatible To KitchenAid Mixers

Use only attachments and bowls that fit your mixer to avoid misalignment, bending, or warping.

Follow these simple tips to keep your KitchenAid mixer in good shape for years.

Don’t Let KitchenAid Mixer Mishaps Stress You

A KitchenAid mixer is a substantial investment for most of us.  We can’t just grab a new one when it bogs down. We want it to serve us for long.

Fortunately, there are fixes (some straightforward, some require professional help) when our mixers bog down or exhibit unusual behavior.

Now that you have this KitchenAid mixer troubleshooting toolkit, you avoid worry.

You can quickly solve simple problems.  You know that repairs can be done if needed.

You also have tips to prevent glitches from cropping up. 

Don’t panic.

Deal with any mishaps calmly, and just enjoy your baking.