How to Fix All Lights Flashing on Keurig

Since they offer convenience and great coffee at the touch of a button, Keurig coffee makers have established themselves as mainstays in many homes. However, it can be frustrating when all the lights on your Keurig machine start flashing, indicating a potential issue.

In this troubleshooting guide, we will explore the possible causes of this problem and provide step-by-step instructions to help you resolve it. By following these simple steps, you can get your Keurig coffee maker back up and running smoothly, ensuring you never have to go without your favorite cup of joe. Let’s dive in and troubleshoot those flashing lights!

Understanding the Issue

When you encounter a situation where all the lights on your Keurig coffee maker are flashing simultaneously, it’s essential to understand the significance of this occurrence. Typically, the flashing lights indicate a problem that needs attention. Here are a few key points to help you better understand the issue:

Potential Causes:

    • Power Supply Issues: The flashing lights may indicate a disruption in the power supply to your Keurig machine. It could be due to a loose power cord connection or an issue with the electrical outlet.
    • Internal Malfunctions: There could be internal malfunctions within the coffee maker that trigger the flashing lights. These malfunctions might be related to the water reservoir, brewing system, or other components.

Troubleshooting Steps Order:

    • It’s crucial to follow the troubleshooting steps in a specific order to identify and resolve the issue effectively. Start with basic steps and gradually move towards more advanced solutions.

How to Fix All Lights Flashing on Keurig

Patience and Perseverance:

    • Troubleshooting the issue may require some patience and perseverance. It’s important to stay calm and follow the steps diligently to troubleshoot and fix the problem.

By gaining a better understanding of the potential causes behind all the lights flashing on your Keurig coffee maker, you can proceed with the troubleshooting process confidently. Let’s now delve into the basic troubleshooting steps to help you resolve the issue and enjoy your coffee once again.

Basic Troubleshooting Steps

When faced with the issue of all lights flashing on your Keurig coffee maker, there are a few basic troubleshooting steps you can follow to determine the cause and potentially resolve the problem. Let’s explore these steps:

A. Check the Power Supply:

  1. Ensure that your Keurig machine is properly plugged into a working power outlet. Sometimes, a loose connection can cause the lights to flash.
  2. Try unplugging the machine from the power outlet and plugging it back in after a few seconds. This can reset the electrical connection and potentially resolve any temporary issues.

B. Inspect the Water Reservoir:

  1. Check if the water reservoir is filled with water. An empty or improperly filled reservoir can cause the machine to malfunction.
  2. Verify that the water reservoir is properly seated in its position. If it is not placed correctly, it may disrupt the brewing process and trigger the flashing lights.
  3. Examine the water intake area of the Keurig machine for any blockages or debris. Clean the area if necessary, as clogs can hinder proper water flow and lead to issues.

By going through these basic troubleshooting steps, you can eliminate common issues related to the power supply and water reservoir, which often contribute to the flashing lights problem. If the issue persists, don’t worry; there are additional troubleshooting steps we can explore.

Resetting the Machine

If the basic troubleshooting steps didn’t resolve the issue of all lights flashing on your Keurig coffee maker, performing a system reset can help reset the machine and potentially resolve software glitches. Follow these steps to reset your Keurig machine:

Unplug the Machine:

    • Begin by unplugging your Keurig coffee maker from the power outlet. This ensures that the machine is completely disconnected from the power source.

Wait for a Duration:

    • Allow the machine to remain unplugged for at least a few minutes. This waiting period helps in discharging any residual electrical energy and allows the machine to reset fully.

Plug the Machine Back In:

    • After the waiting period, plug the Keurig machine back into the power outlet securely. Make sure the connection is solid and tight.

Power On the Machine:

    • Power on the Keurig coffee maker and observe if the flashing lights have stopped. The machine should now go through its startup sequence, and the lights should return to their normal state.

Performing a reset can often resolve minor software glitches that may cause the lights to flash. If the issue persists after the reset, there may be other factors contributing to the problem.

Descale the Machine

If the issue of all lights flashing on your Keurig coffee maker persists after performing a reset, mineral buildup inside the machine may be causing the problem. Descaling the machine helps remove these mineral deposits and improves its performance. To descale your Keurig coffee maker, adhere to following steps:

Prepare the Descaling Solution:

    • Purchase a Keurig-approved descaling solution or use a mixture of equal parts white vinegar and water. Follow the instructions on the descaling solution package for appropriate measurements if using a commercial product.

Empty the Water Reservoir:

    • Ensure that the water reservoir is empty. If there is any remaining water, pour it out and rinse the reservoir with clean water.

Fill the Reservoir with Descaling Solution:

    • Fill the water reservoir with the descaling solution or the vinegar-water mixture. Use the appropriate amount as recommended by the solution’s instructions.

Start the Descaling Process:

    • To collect the descaling solution, place a sizable cup or container on the drip tray.
    • Start a brewing cycle without inserting a K-Cup pod. Select the largest brew size, usually 10 ounces. Initiate the brewing process and allow the solution to flow through the machine.

Repeat the Process:

    • Once the brewing cycle is complete, empty the mug or container. Fresh water should be added to the water reservoir.
    • Run multiple brewing cycles with just water to rinse out any remaining descaling solution or vinegar from the machine. Repeat this rinsing process until the water runs clear and there is no residual odor.

Clean and Reassemble:

    • Clean any removable parts of the coffee maker, such as the water reservoir and the drip tray, with warm soapy water. Rinse them well, then allow them to air dry.
    • Reassemble the machine, ensuring that all components are securely in place.

Descaling your Keurig coffee maker removes mineral buildup that can affect its performance and cause issues like flashing lights. Regular descaling maintenance is recommended to keep your machine running smoothly. If the problem persists even after descaling, it is advisable to contact Keurig’s customer support for further assistance.

Contacting Customer Support

If you have followed the previous troubleshooting steps, including resetting the machine and descaling it, and the issue of all lights flashing on your Keurig coffee maker still persists, it may be time to reach out to Keurig’s customer support. They have a dedicated team that can provide further assistance and guidance in resolving the issue. Here’s what you can do:

Gather Information:

    • Before contacting customer support, make sure to gather all relevant information about your Keurig coffee maker, such as the model number and any specific error messages or symptoms you have observed.
    • Note down the steps you have already taken, including the troubleshooting steps from this guide, to provide a clear and comprehensive account of the issue.

Visit the Keurig Website:

    • Head to the official Keurig website and navigate to their customer support section. Look for contact information, such as phone numbers, email addresses, or live chat options.

Contact Keurig’s Customer Support:

    • Choose the most convenient method of contact, whether it’s calling their support hotline, sending an email, or initiating a live chat session.
    • Clearly describe the issue you are experiencing with your Keurig coffee maker, including the flashing lights and the steps you have taken to troubleshoot it.

Follow Their Guidance:

    • Keurig’s customer support team will provide you with further instructions and assistance based on the information you provide. Follow their guidance and provide any additional details or actions they may require.

By contacting Keurig’s customer support, you can tap into their expertise and specialized knowledge to find a resolution for the flashing lights issue on your Keurig coffee maker. They will work with you to troubleshoot the problem and provide the necessary support to get your machine back to its optimal functioning.

Also Read: Why is My Keurig K Mini Brew Button Not Working


By following the troubleshooting steps outlined in this guide, including checking the power supply, inspecting the water reservoir, performing a reset, descaling the machine, and contacting customer support if necessary, you can effectively address the issue of all lights flashing on your Keurig coffee maker.

Remember, troubleshooting takes patience and perseverance, but with the right approach, you’ll soon be enjoying your favorite brew once again.

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