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5 Reasons Your Keurig All Lights On! (Quick Fixes)

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Most home appliances have lights on them. These lights serve as indicators and may vary in color and location.

Nevertheless, the primary use of lights is to help homeowners understand how a particular appliance functions. One such device is a Keurig coffee maker. 

Your Keurig could have developed a common problem, like keeping all lights on. This article explains in depth why all the lights on your Keurig are on and how to reset them.

A Keurig may have all lights on when there is a coffee ground build-up in your coffee maker. It could also have all lights on when the water reservoir is empty. Other unignorable possibilities are a defective cartridge, poor power supply, and excessive water in the reservoir.

Five Reasons Why All the Lights On Your Keurig Are On?

Keurig All Lights On

The Keurig coffee maker is an easy-to-use home appliance that always comes in handy for making a perfect coffee.

However, since it is an electronic appliance, it is prone to develop some minor and sometimes major faults.

These faults and common problems include your Keurig having all the lights on. So, without further ado, I will outline the rationale behind why all the lights on your Keurig are on. 

#1. Empty Water Reservoir

A Keurig will likely have all the lights on once the empty water reservoir. Therefore, an empty reservoir will likely not brew coffee till it is refilled. 

Fortunately, this is an easy fix once you remove the reservoir and fill it with water. 

An empty water reservoir is also noticed when the red light is on while the green light is off. However, once a refill is done, all the lights go off immediately.

#2. OverFull Reservoir

A Keurig coffee maker will also have all the lights on when the water reservoir is too full and could cause Keurig to stop brewing coffee. 

Luckily, all you need to do in this situation is reduce the quantity of water in the reservoir and have the problem fixed. 

#3. Coffee Ground Build-Up

When the Keurig is not cleaned or washed properly after each use, residual coffee grounds build up inside the coffee cup, causing all the lights to be on. 

Aside from this, bacterias, molds, and fungi grow on the machine’s surface, making your coffee unhealthy for consumption. Additionally, it could also make the brew cycle refuse to start. 

#4. Defective Cartridge

Any defective compartment on the Keurig can cause it to have the lights on to indicate that your machine requires a replacement or servicing. 

Defective compartments like the water tank should be replaced as soon as you notice any abnormalities.

#5. Poor Power Supply

A good power supply source is essential when operating any home appliance. However, fluctuations in power supply result in a full display of all the lights.

 When this happens, disconnect it from the power source and wait for a moment- 60 seconds before you go ahead to reconnect the machine to an outlet. 

What to Do When Keurig Has All the Lights On?

Once the Keurig develops minor faults, such as being stuck on all light-on modes, it signifies that your machine needs a replacement or a reset. Resetting your machine always comes in handy and most times clears all errors.

However, there are other things you can do when your Keurig has all the lights on.

  • Descale your machine
  • Thoroughly clean the water tank
  • Thoroughly clean the exit needle
  • Check all the compartments of the Keurig for any damages and repair them as soon as possible.

How to Reset My Keurig?

Keurig coffee makers come in different sizes and models; therefore, they require varying methods and processes when resetting each model.

 For instance, the reset process for the Keurig K-Duo differs from that of the Keurig 2.0 model. 

#1. Keurig Coffee Maker Reset

#1. Keurig K-Duo

To reset the Keurig K-Duo, press the power button; after that, press the 8 and 10oz options concurrently for some moments, then release it. 

#2. Keurig 2.0

To reset the Keurig 2.0, switch off the device and remove the water tank. After that, you can plug your machine back into the power source after 5 minutes.

 Next, switch on the machine, connect it to power and reassemble the water tank. 

#3. Keurig K- Classic

To reset a K- Classic, press the medium and large cups with the auto-off for a few seconds, then release it. 

#4. Keurig Compact

To reset a Keurig Compact, open and close the lid. After that, press the appliance’s big, medium, and small buttons one after the other for some seconds each. 

After this, the device is expected to start priming on its own, however, if it doesn’t, you can go over the whole process again. 

#5. Keurig Mini Reset

To reset the Keurig mini, open the K- cup lever, power off the appliance, and disconnect it from the power source.

 After this, please wait a few seconds, connect the device to a power source, and switch it on. 

#6. Keurig K-Supreme Plus

To reset the Keurig K-Supreme Plus:

  1. Turn on the device and press the arrow buttons.
  2. After this, press the factory reset option and the K button to confirm. The machine will beep when the reset is complete.
  3. Unplug the machine for 10 seconds, then connect it back. 

Aside from their varying models, Keurig machine reset processes can also differ because they have display options on their screens or come without displays.

 Keurig machines without display have three methods of resetting.

#2. Two Methods of Resetting Keurig Models Without Display

Method 1Method 2
Switch off the machineDisconnect the device from the power source
Disconnect it from the power sourceRemove the reservoir compartment
Press the on and off button down for a few moments before releasing itKeep the water tank detached for a couple or hours or the whole night
Plug back the machine into a power sourceReplace the device and reassemble the water tank
Switch on the deviceAttempt brewing

#3. How to Reset Keurig Models With Display

  • Press the small and medium cup buttons on the machine together
  • Release them after a few seconds
  • After that, press down the menu button three times consecutively.
  • Finally, hold the menu button again for a few seconds. The machine will automatically display an on-screen message ” brew 0:00.” 

Where Is the Reset Button On Keurig?

Keurigs are quite efficient for home use and easy to operate without having to go through so much stress.

 However, even when they get defective compartments and require a reset, they do not come with a one-time reset button. 

Resetting a Keurig is often done by following a step-by-step guide to reset it. 

Interestingly, the first troubleshooting step is to switch off your Keurig and remove it from a power source for a couple of hours. 

Why Is My Keurig Not Brewing?

The Keurig coffee maker may become defective and stop brewing.  Sometimes, a simple reset can correct every brewing issue, while Keurig may stop brewing due to damaged parts such as the water tank. 

In addition, brewing may become difficult when the Keurig is dirty or has accumulated coffee grounds on the tube and tanks. 

Fortunately, brewing issues are easily fixed using a specialized Keurig maintenance brewing kit or specialized brewer maintenance accessory tool. 

Aside from these, there is a step-by-step guide on how to fix brewing issues by cleaning Keurig’s needle, which includes:

  • Switching off the Keurig and disconnecting it from it. Power source
  • Then, top up the brewer maintenance pod with enough water.
  • Put the brewer tool head in a cupboard. 
  • Open the brew head and close it five times in a row.
  • Remove the cleaning tool and run three empty cycles with just water to remove every residue of coffee and dirt.
  • If this does not fix any issues with your Keurig, consider calling the Keurig customer care center.


Keurig shows all lights when there is coffee ground build-up in the device, an overflowing reservoir, an empty reservoir, a defective garage, and a poor power supply. 

Resetting your machine is always the best thing to do when Keurig lights are on. However, the steps used to reset each Keurig coffee maker model are due to size and effectiveness. 

A Keurig can also stop brewing due to coffee ground build-up and a broken water tank. 

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