Shark Robot Vacuum Max Light Flashing Blue? (Quick Fix)

Shark robot vacuum max light flashing blue can be frustrating to fix, as the blue light can be due to a couple of different causes.

If your Shark robot is blinking or glowing in blue, worry, as we will guide you through this.

To fix your Shark robot vacuum flashing blue, start by power cycling it and then clean the dust bin sensors. Next, ensure your robot wheel is not obstructed and inspect the brush.

Now that you are familiar with the fixes we will try out for your Shark robot vacuum let’s first see why the blue light flashing occurs.

Why is My Shark Robot Vacuum Max Light Flashing Blue?

Smart robot vacuum cleaners like Shark are programmed to raise certain warning lights in case they run into an issue when cleaning.

A blue light is typically quickly resolved when performing routine maintenance but can sometimes be caused by hardware damage as well.

Here are the general causes of Shark Robot Vacuum flashing blue:

Now that you know the top causes of this issue, let’s look at the actual troubleshooting methods.

For best results, please follow the steps outlined below without skipping any over.

How to Fix Shark Robot Vacuum Max Light Flashing Blue?

Tip: Shark Robot vacuum currently supports only 2.4GHz WiFi networks.

Solution #1: Power Cycle the Shark Robot Vacuum

The first step you should do whenever your Shark robot vacuum is flashing blue is to power cycle it.

This can clear out any runtime glitches and remove the flashing blue light in case it was falsely triggered.

Here are the steps to power cycle your Shark robot vacuum: 

1. Turn off the Shark Robot Vacuum using the power button.
2. Unplug the vacuum from its charging dock or power source.
3. Wait for around one minute to let any residual charge get removed from your robot.
4. Replug the Shark Robot Vacuum into the charging dock.
5. Turn on the vacuum using the power button.
6. Check if the max light still flashes blue.
7. If the blue flashing light issue persists, follow the next steps in our guide.

Note: Always have your docking station placed against a wall and on a flat surface.

Solution #2: Clean the Dust Bin Sensors

Shark robot vacuum clean light flashing red and dock flashing blue is a common occurrence whenever there is an issue with the dust bin sensors.

If these sensors on your Shark device get obstructed, they could provide false readings and raise a blue or red flashing warning light.

Here are the general ways to clean your Shark robot vacuum dust bin sensors.

1. Power down the Shark Robot Vacuum.
2. Remove the dust bin from the vacuum.
3. Locate and then wipe the sensors clean using a soft, dry cloth.
4. Ensure there’s no debris blocking the sensors.
5. Reinsert the dust bin properly back into the Shark Robot Vacuum.
6. Power up the vacuum and check if the blue flashing is now gone.

If you are unsure where the dust bin sensors are located, check the instruction manual on your Shark robot, as the sensor location might vary based on the model.

Note: Before letting your Shark Max work, ensure there are no small objects on the floor.

Solution #3: Check for Wheel Obstructions

The wheels are one of the most important and frequent causes for warning lights on your Shark robot vacuum.

As the wheels on such robots are very compact, they can quickly become jammed or obstructed by small objects, debris, or hair.

To prevent this, you must service them.

Here are the exact steps to ensure your Shark robot vacuum wheel is free of obstruction:

1. Switch off the Shark Robot Vacuum.
2. Inspect the wheels for any trapped debris or hair.
3. Remove any obstructions, pet hair, or dirt found in the wheels.
4. Clean the wheels by paying special attention to the areas where they are attached.
5. Ensure wheels spin freely by manually rotating them.
6. Turn on the Shark Robot Vacuum.
7. Test if the max light has stopped flashing blue.

If you hear a squeaking sound or feel friction when spinning the wheel after cleaning the robot vacuum wheels, you can use a lubricant on their bearings after disassembling them.

Note: Never use your Shark robot vacuum to clean spilled liquids to avoid hardware damage.

Solution #4: Reset the Shark Robot Vacuum

If power cycling your Shark robot didn’t help, and you still have the blue flashing light issue, it’s time to perform a hard or factory reset.

This will revert the robot back to its default configuration and can clear up many software-related issues causing the blue light flashing.

Here is how to factory reset your Shark robot vacuum to remove the blue flashing light:

1. Note that a hard reset will revert your Shark vacuum to its default configuration.
2. Press the power button to turn off your robot vacuum.
3. Hold down the power button for 10 seconds to initiate a reset.
4. Wait for the Shark Robot Vacuum to power off completely.
5. Release the button and wait for a few minutes, then turn on the Shark Robot Vacuum.
6. Allow the vacuum to reboot fully and check if the max light flashing issue is resolved.

You can also reset the Shark robot vacuum remotely with the help of the app by going to Settings > Factory Reset.

However, in cases your Shark robot vacuum can’t connect, it’s best to reset it manually.

Note: Don't place your Shark robot dock in a place exposed to direct sunlight or heat.

Solution #5: Inspect and Clean the Brushes

If the brush that is spinning to take in and swipe all the dust gets stuck, your robot will start flashing in blue or red.

To ensure this isn’t causing an error, you have to check and clean the spinning brush for any obstructions.

Here is how to thoroughly inspect and clean your Shark robot vacuum brushes:

1. Turn off and flip over your robot vacuum device.
2. Note that you can use the cleaning kit that came with your Shark robot.
3. Remove the main brush roll by unclipping it.
4. Clean out any tangled hair or debris from the brush roll.
5. Inspect the brush roll for any damage.
6. Carefully reinstall the brush roll correctly and check if it can freely rotate.
7. If you notice that the brush is struggling to spin, it needs further cleaning.

After cleaning the brush, simply switch on the robot vacuum and monitor the Shark Max light for normal operation.

Note: Regularly check the main brush roller for issues and clean it to ensure proper robot function.

Solution #6: Update the Shark Robot Vacuum Firmware

If you have services for the Shark robot and the blue flashing still persists, there is a possibility it’s caused by outdated firmware.

The Shark app is used to install pending software updates that are vital for ensuring optimal operation of your robot vacuum device.

Before you begin, ensure that your robot vacuum is on and connected to the same Wi-Fi network as your mobile phone or tablet where the app is installed.

Here is a quick overview of how to ensure your Shark robot is up to date.

1. Open the Shark Clean app on your smartphone.
2. Navigate to the settings or support section.
3. Look for any available firmware updates.
4. Select the update option to install new firmware.
5. Wait for the update to complete without interrupting the process.
6. Restart the Shark Robot Vacuum and check the light status.

Note: You can program the Shark vacuum robot to clean only on set schedules.

Solution #7: Check the Charging Dock

A faulty or incorrect charging dock setup can also cause your Shark robot to have charging or power issues.

To prevent this from occurring, you need to ensure the charging dock is correctly set up and the charging ports are not dirty or obstructed.

Please always power off the dock before touching any electrical components.

Here is how to check your Shark robot vacuum max charging dock for issues:

1. Examine the charging dock for any visible damage or debris.
2. Clean the charging contacts on both the dock and the vacuum with a soft cloth.
3. Ensure the dock is plugged in correctly and has power.
4. Place the Shark Robot Vacuum onto the charging dock.
5. Observe the charging indicators for normal charging behavior.
6. Leave the Shark Robot Vacuum to charge for a few hours.
7. Check if the max light stops flashing after charging.

If you suspect the robot isn’t charging, plug the dock into a different outlet to rule out any potential issues with a faulty electrical socket.

Note: Ensure your furniture has sufficiently large gaps to allow the robot to get in between. 

Quick Recap

To fix the Shark robot vacuum max light flashing blue, start by cleaning its brush and ensuring the wheels are not obstructed.

Then, update the Shark app and reset your robot vacuum cleaner.