Cleaning sensors vacuum cleaner Xiaomi: restore the accuracy of navigation

Xiaomi's robot vacuum cleaner has stopped seeing obstacles, driving around the room chaotically, or constantly emitting a "jammed sensor" error? 90% of the time, it's polluted sensors. Dust, animal hair and small debris accumulate on the lenses and contacts, knocking down navigation algorithms. Cleaning up the sensors is the first procedure to do before you go to the service.

Many users are afraid to disassemble the equipment for fear of breaking fragile elements. But in the case of Xiaomi Mi Robot, Viomi or Dreame, the cleaning process is as simple as possible: most sensors are located in prominent places and do not require complete disassembly.

In this article you will find:

• 🔍 Types of sensors in vacuum cleaners Xiaomi and their location
• 🧹 Step-by-step instructions for cleaning with photos and videos
• ⚠️ Mistakes that ruin sensors forever
• 📊 Compatibility table for cleaning products

What sensors are in the vacuum cleaners Xiaomi and what they are responsible for

Xiaomi's modern robot vacuum cleaners are equipped with a set of sensors, each of which performs its own function.

1.Laser sensor (LDS) — It's a rotating module on the top panel that scans the room and builds a map, and the contamination of its lens causes the vacuum cleaner to go blind, to hit walls or ignore furniture.

2 Infrared sensors are located around the perimeter of the housing, are responsible for detecting bumper-level obstacles, and if they are covered in dust, the vacuum cleaner will not see the chair legs or the threshold.

3. Fall sensors are on the bottom of the body, prevent falling down stairs or a high carpet, and if it gets dirty, the robot can fall off a ledge or refuse to move off the carpet.

4 Optical sensors (in camera models, such as the Xiaomi Mi Robot Vacuum-Mop 2 Pro) help to recognize objects and improve navigation.

5 Dust sensor - detects the degree of air pollution and regulates the suction capacity. When it is polluted, the vacuum cleaner operates at maximum power constantly, reducing the time of autonomy.

💡 How to know if the sensors are contaminated?

• 🤖 The vacuum cleaner became more often stuck or "lost" in space
• 🔄 The map of the room in the Mi Home application was built incorrectly
• ⚠️ Error 10 errors (problem with Error 10) LDS) Error 12 (contamination of IR sensors)
• 🔋 The battery discharges faster than usual (dust sensor works for wear and tear)

Preparation for cleaning: what will be needed

Before you start cleaning, prepare the necessary tools and materials. Using the wrong tools can damage the sensors!

Mandatory set:

• 🧴 Isopropyl alcohol (70% and higher) – the best means for cleaning optics
• 🧻 Microfibre wipes (without pile!)
• 🪛 Plastic blade or mediator - for careful slashing of covers
• 💨 A compressed air canister (or a small vacuum cleaner with a narrow nozzle)
• ⚡ Antistatic brush – to remove dust from electronic boards

What NOT to use:

• 🚫 Water or soap solutions – can cause corrosion of contacts
• 🚫 Cotton swabs with a hard base - the risk of scratching the lenses
• 🚫 Acetone, gasoline, solvents - destroy plastic and rubber seals
• 🚫 Hard brushes or metal objects – damage fragile parts

⚠️ Warning: Before cleaning, disconnect the vacuum cleaner from the charging station and remove the battery (if possible without disassembly!

Step-by-step: how to clean the laser sensor (LDS)

Laser sensor is the most vulnerable element in Xiaomi vacuum cleaners. Its lens rotates at high speed, attracting dust like a magnet. LDS:

• Vacuum Cannot See Walls and Furniture
• In the Mi Home app, the map is built fragmentary
• Robot moves chaotically, ignoring cleaning areas

How to clean:

1. Turn off the vacuum cleaner and turn it over with the top panel down.
2. Find a circular transparent dome (usually in the center of the top cover) scroll carefully with your fingers, it should rotate freely, if you feel resistance, then dirt has accumulated inside.
3. Moisten the microfiber napkin with isopropyl alcohol and, with slight movements, wipe the outer surface of the dome.
4. Use a spray of compressed air to blow dust out from under the lid. Hold the balloon upright to avoid liquid.
5. If the pollution is severe, you can remove the cover. LDS (It's usually mounted on latches. So you can put it in a plastic blade on both sides.

🔹 For removable models LDS-Module (e.g. Xiaomi Mi Robot Vacuum-Mop 2 Pro):

• Unscrew. 2-3 screw-screw.
• Carefully remove the module and wipe the contacts with alcohol.
• Check the rotation of the laser mirror – it should be smooth.

⚠️ Warning: Don't touch the laser emitter inside the module! even a slight contamination of fat from your fingers can make it inoperable.

Cleaning infrared (IR) sensors and anti-fall sensors

The IR sensors are located around the perimeter of the body (usually under a black plastic strip) and on the bottom of the vacuum cleaner, and their contamination causes the robot to fail to see the obstacle or to fall off small ledges.

How to clean the IR sensors:

1. Turn the vacuum cleaner over and look at the bottom, and the fall sensors look like small, round or rectangular windows.
2. Use an antistatic brush to remove dust from the surface of the sensors.
3. For persistent contaminants, dip the cotton-coat disc with alcohol and gently wipe the lenses.
4. Blow the sensor holes with compressed air to remove dust from the inside.

Features of cleaning anti-fall sensors:

• 🕳️ They're often clogged with pile and hair. Use tweezers to extract the clumps.
• 🔦 Check the transparency of the lenses: if they are cloudy, then they are covered with fatty plaque (alcohol is required).
• 🛠️ In some models (for example, Viomi). V3) The drop detectors are hidden under the removable panel. To remove it, unscrew the 4 screws.

A critical mistake many users make is using wet wipes for optics. They leave behind divorces that scatter the IR ray and lead to false positives!

💡

If after cleaning the anti-fall sensors continue to operate falsely, check their calibration in the vacuum cleaner settings menu (Sensor Calibration section).

Cleaning optical sensors and cameras (for models with visual navigation)

Xiaomi vacuum cleaners with a camera (e.g. Mi Robot Vacuum-Mop 2 Pro or DreameBot) L10 Pro) require special care for optics. A contaminated lens leads to:

• Incorrect object recognition (vacuum cleaner "cannot see" shoes or wires)
• Distortion of colors on the map in the application
• Refusal to work in dark rooms

How to clean the camera:

1. Find the camera lens (usually located in front under transparent glass).
2. Use special wipes for optics (for example, for glasses) or microfiber soaked with alcohol.
3. The movements should be circular, from the center to the edges.
4. To remove dust from the inside of the module, use compressed air (short pulses).

🔹 For models with backlighting (for example, DreameBot) Z10 Pro):

⚠️ Attention: If the camera is still not focusing after cleaning, there may have been a shift in the lens when the vacuum cleaner falls, in which case professional calibration in the service will be required.

Cleaning the Dust Sensor and Filters: Why It’s Important for Navigation

The dust sensor indirectly affects the navigation system, and when it's contaminated, the vacuum cleaner runs at maximum power, which results in:

• Quick discharge of the battery
• Overheating of the engine and electronic components
• Falsely triggered other sensors due to vibrations

How to clean the dust sensor:

1. Remove the dust collector and find a small hole with a sensor (usually near the air inlet).
2. Use compressed air to blow dust out of the hole. Don't blow with your mouth - the moisture will damage the sensor!
3. Wipe the surface around the sensor with a dry microfiber.
4. Check it out. HEPA-filter – if it is clogged, the dust sensor will not work properly.

🔹 Filter care board:

• 🌬️ Wash it. HEPA-filter under running water at least 1 time per month.
• ☀️ Dry it naturally (not in the microwave or oven!).
• 🔄 Change the filter every 6 months – even with regular cleaning, it loses its effectiveness.

💡

Contaminated dust sensor increases the load on the battery 20-30%, reducing the time of the vacuum cleaner on one charge.

Common Mistakes When Cleaning Sensors and How to Avoid Them

Many users in an attempt to clean the sensors only make the problem worse.Top-5 errors and their consequences:

1.Use of wet wipes for optics

• ❌ What happens: Divorces remain on the lenses, dissipating the laser or IR ray.
• ✅ How to do it: Only dry microfibre or alcohol!

Excessive pressure during cleaning

• ❌ What happens: Fragile contacts are damaged or lenses are shifted.
• ✅ How to do it: The movements should be light and sliding.

3. Neglect of antistatics

• ❌ What happens: Static electricity pulls dust back to sensors.
• ✅ How to do it: Use antistatic wipes and ground before work.

4. Cleaning without power outage

• ❌ What happens: Short circuit when moisture hits the board.
• ✅ How to do it: Remove the battery or turn off the vacuum cleaner from the docking station.

5. Use of sharp objects

• ❌ What happens: Scratches on lenses or damage to printed circuit boards.
• ✅ How to do it: Only plastic or wooden tools!

⚠️ Warning: If the sensors stopped working after cleaning, check if the plumes moved during disassembly. 1S viomi V2 contact LDS-The module often departs with careless handling.

FAQ: Frequent questions about cleaning Xiaomi vacuum cleaner sensors