iRobot Roomba Plus 405 Combo Robot Plus AutoWash Dock User Guide

Install the dock ramp by aligning with the dock and pressing
down to snap into place.
Place the dock on a hard surface flooring away from stairs and
direct sunlight.

Preparing the Robot:

Prepare the clean water tank by filling it with water and
compatible cleaning solution.
Plug in the dock to a wall outlet and ensure the cord is not
obstructing the robot’s path.

Activating the Robot:

Wake up the robot by placing it in front of the dock and
sliding it towards the dock to align the charging contacts.
To remove the robot from the dock, slide it towards you and
then lift.

FAQ:

What cleaning solutions can I use with my robot?

Only certain cleaning solutions listed on the iRobot website or
app can be safely used with your robot. Please do not use other
cleaning solutions or bleach-based products.

How long should I charge the robot before starting the first
cleaning?

We recommend charging the robot for up to 4 hours prior to
starting the first cleaning, even though it comes with a partial
charge.

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Roomba® Plus 405
Combo robot AutoWash dock
Owner’s Guide

Getting started
1 Remove foam inserts behind bumper
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2 Install the Edge-Sweeping Brush and mop pads

For more information, visit global.irobot.com

Align the Edge-Sweeping Brush and press down until you hear a click.

3 Install the dock ramp

4 Place the dock on hard surface flooring
EN Good Wi-Fi® Coverage

Install the removable ramp by aligning with the dock. Press down to snap into place.

1.5 ft (0.5 m) both sides

4 ft (1.2 m) from stairs
4 ft (1.2 m) in front

NOTE: Do not place it in direct sunlight. Ensure the area around the dock is free of clutter to improve docking performance.
WARNING: To prevent the risk of your robot falling down stairs, ensure that your dock is placed at least 4 feet (1.2 meters) away from stairs.

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

1 Prepare the clean water tank
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2 Plug in the dock

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Remove clean water tank from the dock. Fill the clean water tank (right) with water and compatible cleaning solution if desired.

Plug the power cord into the wall. Wrap the cord back so it won’t get in the way of the robot as it comes and goes.

IMPORTANT: Only certain cleaning solutions can be safely used with your robot. A full list of compatible cleaning solutions can be found on http://answers.irobot.com/s/roomba-combo-cleanser or by visiting the app. Please do not use other cleaning solutions or bleachbased products.

For more information, visit global.irobot.com

3 Wake up the robot

4 Download the Roomba® Home App

Scan the QR code with the camera on your mobile device or find the Roomba®

Home App in your app store. The app will guide you through steps to setup your

robot. Once your robot is set up in the app, you’ll be able to:

· Control when, where, and how you clean · Create automatic cleaning schedules · Set custom cleaning preferences · Unlock digital features · Access tips, tricks, and answers to commonly asked questions

Place your robot in front of the dock, then slide it toward the dock, lining up the metal charging contacts. After a few minutes, a sound will let you know it’s awake.
NOTE: Your robot comes with a partial charge, but we recommend that you charge the robot for up to 4 hours prior to starting the first cleaning.
To remove your robot from the dock, slide the robot towards you and then lift.

IMPORTANT: Read enclosed safety information guide first before using your robot.

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

About your Roomba® Plus 405 Robot
Top View
EN
8

10 13

1 Charging Contacts 2 Dock Alignment Guides 3 Debris Evacuation Port 4 LiDAR Detector Bumper

5 ClearViewTM LiDAR 6 Home Button 7 Power Button 8 Robot Top Cover

For more information, visit global.irobot.com

9 Filter
10 AutoEmptyTM Port or Debris Evacuation Port
11 Bin Release Button

12 Bin 13 Bumper

Bottom View

14 15 16 17 18 16 16 19
14 Wheel 15 Multi-Surface Brush 16 Cliff Sensors 17 Floor Type Sensor

18 Caster Wheel 19 Docking Sensor 20 Mop Pad 21 Mop Pad Plate

EN 20 21
22 23 24 16

22 Brush Cover 23 Brush Cover Release Tab 24 Edge-Sweeping Brush

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

About your AutoWashTM Dock
Front View
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17 12

1 Dirty Water Tank 2 Clean Water Tank 3 Charging Contacts 4 Dock Alignment Guides 5 AutoWashTM Water Inlet

6 AutoWashTM Pad Dry recess 7 AutoWashTM Water Drain 8 Trash Indicator 9 Dirty Water Tank LED Indicator 10 Clean Water Tank LED Indicator

For more information, visit global.irobot.com

11 Charging LED Indicator 12 IR Window 13 Debris Bag Storage 14 Extra Debris Bag 15 Debris Bag Guide Rails

16 Cleaning Brush Accessory 17 Debris Evacuation Port 18 Main Debris Cubby 19 Dock Filter 20 Cubby Door

Rear View 21
22 23
24 25 21 Water Tank Handle 22 Water Tank Lid 23 Water Tank Latch 24 Exhuast Vent

Top View
28
29 1 26 27

EN 30
31 2
32 33

25 Removable Power Cord 26 Cord Attachment 27 Cord Wrap 28 Water Entry Point

29 Dirty Water Float 30 Clean Water Tubing 31 Clean Water Float 32 Removeable Ramp

33 Wheel Track

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

Charging

Power Icon Indicator

Dock Charging LED Indicators

EN
POWER Button
White – Fully charged and connected Flashing White – Return to dock to charge Pulsing White – Charging (low battery) If you try to start cleaning while robot is charging with low battery, it will display a pulsing white light Flashing Red – Low battery/Error
Charging during a cleaning routine
Your robot will return to the dock whenever it needs to recharge. Once it is sufficiently charged, it will then resume cleaning where it left off.
Standby mode
Your robot uses a small amount of power whenever it is on the dock. You can put it in a further-reduced power state when not in use by pressing for 10 seconds. To exit low power mode short press button.
Storing your robot
For long-term storage, turn off your robot by removing it from the dock and holding for 10 seconds. Store in a cool, dry place.

On: Robot on dock charging Off: robot not on dock, robot not charging, or dock is asleep
Solid White: When the robot is fully charged or in the process of charging. While the dock is automatically emptying the bin, during washing or drying cycles, and when the dock is in standby mode.
NOTE: Software updates may adjust the actual LED behavior on the robot and/or dock. Please visit global.irobot.com for the most up-todate information.

For more information, visit global.irobot.com

Cleaning
Button Controls
HOME button: Tap to send the robot home Press when running to pause Press when paused to dock Press when docking to stop
POWER button: Tap to Start / Pause / Resume a job Hold for 3 seconds to turn on Hold for 10 seconds to turn off
Dock Cleaning LED Indicators
Solid red: Dust bag full, missing, or improperly installed
Solid red: dirty water tank full, missing, or improperly installed
Solid red: clean water tank empty, missing, or improperly installed
NOTE: It is highly recommended to use the Roomba® Home App for cleaning control. The mobile app can be used to clean specific rooms, setup cleaning routines, and create automations/schedules.

Cleaning Pattern

Your robot will automatically explore and clean your home in neat rows. It

will return to the dock at the end of a cleaning routine, or whenever it needs

to recharge.

Tips: · Remove excess clutter from floors before cleaning. · Use your robot frequently to maintain well-conditioned floors.

After 90 minutes of inactivity off the dock, your robot will automatically end its cleaning. If you are unsure if it is finished or paused, visit the Roomba® Home App to check on its status.
Spot clean
Tap button two times to spot clean a designated area. After spot clean is complete, your robot will end the job. Press To send it back to its dock.
AutoEmptyTM
Your robot will automatically empty its dust bin at the end of every cleaning routine.

NOTE: Roomba robots are generally designed to be used on most floor types for vacuuming. We do not recommend using mopping functions on unsealed hardwood floors and certain laminate/vinyl planks due to potential water damage to the flooring and/or subfloor. For more info, please visit global.irobot.com..

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

Starting a cleaning routine from your dock

If the clean water tank and dirty water tanks are ready, skip to step 5. If the Clean Tank or Dirty Tank LED Indicators are on:

1 Lift to remove the tank that requires maintenance.

2 Lift the latch on the tank to open.

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For more information, visit global.irobot.com

3 Empty the Dirty Tank. Fill the Clean Tank with water.
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4 Close and latch the water tank lids. Place tanks back on the dock.
IMPORTANT: Ensure the latch is properly closed before reinstalling.
5 With mop pads attached, return the robot to the AutoWashTM dock
and use the app or press the button on your robot.

Pad Washing and Pad Drying

Your robot will return to its dock for pad washing as needed during cleaning routines and then again when cleaning is complete.

Pad drying will only take place at the end of its cleaning routine.

IMPORTANT: Do not interrupt the robot while Pad Washing is active. It is normal to hear noises throughout this process as the pads spin and the Pad Washing Basin is filled and drained.

Once complete, the dock will proceed to dry the mop pads by blowing hot air over them.
NOTE: The drying process can last for a few hours. You can choose from different drying times in the app. You may hear a low hum coming from the dock while the dryer is active.

Visit the Roomba® Home app to manually start Pad Washing, start or stop Pad Drying, or to customize pad washing settings.

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

Care and maintenance for your robot

To keep your robot at optimal performance, make sure you periodically perform the following basic care &

maintenance. There are additional instructional videos in the Roomba® Home App. If you notice your robot

picking up less debris from your floor, empty the bin, clean the filter, and clean the brushes.

Part

Care Frequency

Replacement Frequency*

Dust bin
Filter
Edge-Sweeping Brush Multi-surface brush Front caster wheel Charging contacts Sensors Mop pad Brush cover

Clean bin as needed Clean once a week (twice a week if you have a pet) Clean every 2 weeks or as needed Clean once a week Clean every 2 weeks or as needed Clean every 2 weeks or as needed Clean once a month or as needed Auto cleans after mopping Inspect every 6 months

–
Every 3-6 months
Every 3-6 months Every 6-12 months Every 180 hours of cleaning Replace if worn or damaged

*Replacement frequency may vary. Parts should be replaced if visible wear appears. If you think you need a replacement part, please contact iRobot Customer Care for more information.

Cleaning the Edge-Sweeping Brush
Pull to remove the edge-sweeping brush. Remove any hair or debris using the cleaning brush, then reinstall the edge-sweeping brush.
IMPORTANT: It is recommended to replace the edge-sweeping brush every 36 months for optimal cleaning performance.

For more information, visit global.irobot.com

Cleaning the Multi-Surface Brush
1 Press the brush cover release tabs and lift to
remove brush cover.

2 Remove the multi-surface brush.

3 Remove any hair debris from the multi-surface

brush using the cleaning brush.

4 Reinstall the multi-surface brush and
brush cover in the robot.

NOTE: For instructions to perform a deeper cleaning of the multi-surface brush, see global.irobot.com
IMPORTANT: It is recommended to replace the multi-surface brush every 6-12 months for an optimal cleaning performance.

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

Cleaning the Filter and Bin
1 Remove robot top cover by lifting up.
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2 Press the dust bin release buttons to
remove dust bin.

3 Remove filter.

4 Clean debris from filter with cleaning brush.

5 Open bin door. Empty and clean dust bin with
cleaning brush or a clean cloth. Close Bin door.

6 Reinsert filter.

For more information, visit global.irobot.com

7 Place bin back in the robot.

Washing the Bin

1 Release the bin, remove the filter, and open the bin door.

2 Rinse the dust bin using warm water.

8 Return robot top cover
NOTE: If you place your robot on the dock by hand, it will not empty automatically. In this case, use the Roomba® Home App or hold the button down for 2-5 seconds.

3 Make sure bin is completely dry. Reinsert filter and place bin back in
the robot. IMPORTANT: The bin is not dishwasher safe.
IMPORTANT: To achieve optimal performance with your robot and dock, clean and/or replace your robot’s filter as needed.

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

Cleaning the Front Caster Wheel

Use the cleaning brush to remove hair and debris

from the front caster wheel.

Cleaning the Charging Contacts, and Sensors
Remove the robot from the dock and wipe charging contacts and sensors with a clean, dry cloth or lightly dampened melamine foam.

CHARGING CONTACTS

SENSORS

IMPORTANT: A front wheel clogged with hair and debris could result in damage to your floor. If the wheel is not spinning freely after you have cleaned it, please contact Customer Care.

For more information, visit global.irobot.com

IMPORTANT: Do not spray cleaning solution or water onto the sensors or sensor openings.

Care and maintenance for your dock
To keep your dock running at optimal performance, perform the procedures on the following pages.

Part Charging contacts Sensors IR window

Care Frequency Clean once a month Clean once a month Clean once a month

Bags

–

Clean tank Dirty tank
Pad washing basin, Liquid overflow basin
Ramp

Rinse and refresh water as needed Rinse and empty as needed Clean if visibly dirty, once a month Clean if visibly dirty

Replacement Frequency* Bags should be replaced when full prompted by the LED indicator on the dock and/or Roomba® Home App –
–
–

Cleaning the Pad Washing System

1 Wipe out the Pad Washing Basin with a clean

dry cloth. Ensure there are no obstructions in the

drainage port. Mild soap and a sponge may be

used for stubborn debris.

*Replacement frequency may vary. Parts should be replaced if visible wear appears. If you think you need a replacement part, please contact iRobot Customer Care for more information.

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

Replacing the Bag

1 Pull the cubby door towards you and

down to open.

2 Slide the card out. When pulled, the bag will self-
seal so dust and debris cannot escape.

3 Install a new bag by sliding the card into the
guide rails.

4 correctly aligned.

For more information, visit global.irobot.com

Cleaning the Charging Contacts and IR Window
Inspect the components to make sure that they are clear of debris. Wipe with a clean, dry cloth.

Removing Debris from Dock Filter
Inspect dock filter for any lint or debris build-up, and wipe with a clean dry cloth to remove.
EN

CHARGING CONTACTS

IR WINDOW

IMPORTANT: Do not spray cleaning solution or water onto the sensors or sensor openings.

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

Washing the Water Tanks
EN
1 Remove both water tanks.

2 Lift the latch on the water tanks to open.

3 Empty Dirty Water tank.

-MAX-

For more information, visit global.irobot.com

4 Rinse both water tanks using warm water.

5 Refill the clean water tank with water. Leave the

6 Reinsert both water tanks

Mild soap and a sponge may be used for

dirty water tank empty.

stubborn debris.

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IMPORTANT: Water tanks are not dishwasher safe.
IMPORTANT: Ensure the latch is properly closed on the water tanks before reinstalling.

Roomba® Plus 405 Combo robot + AutoWashTM dock Owner’s Guide

Troubleshooting

Troubleshooting your robot

Your robot will alert you if something is wrong with a voice announcement or

audio alert. The Roomba® Home App will also provide notifications with steps to

troublehoot any issues.

If you are unsure if the robot is finished or paused, consult the Roomba® Home app to check on its status.

Factory Reset
To factory reset press for 5 seconds and then (within 5 seconds) press + for 5 seconds.

BATTERY SAFETY & SHIPPING
WARNING: Lithium ion batteries and products that contain lithium ion batteries are subject to stringent transportation regulations. If you need to ship this product for service, travel or any other reason, you MUST follow the below shipping instructions.

Troubleshooting your dock
Your dock will tell you if something is wrong via LED indicators on the front of the canister and through the Roomba® Home App. If the dock is not performing as expected, check the Roomba® Home app for errors.

LED indicator Solid red

Common error
Bag full or missing

How to fix
Replace bag if it is full or missing.
Make sure that the bag is securely inserted.
If problem persists, remove any debris from the port on the bottom of your robot and dock.

This product has been equipped with a thermal protector designed to protect against damage due to overheating. If the protector operates, the motor will stop running. If this happens, unplug the unit, allow it to cool for 30 minutes, clear any obstructions from the evacuation port and evacuation tube, then plug the unit back in.

· Battery MUST be turned off before shipping. · Turn off the battery by removing the robot from the dock and holding down the
button for 10 seconds. Press the bumper in for 10 seconds while holding the button. All indicators will then turn off. · Package the robot securely for shipping.
If you need further assistance, please visit your Roomba® Home app, contact our Customer Care team or visit global.irobot.com.

For more information, visit global.irobot.com

Need further assistance? We’re here to help.
Download the Roomba® Home App or visit global.irobot.com for product support or to contact your local support center. If you need further assitance in the US & Canada, call the US Customer Care team at 877-855-8593.

iRobot USA Customer Care Hours Monday to Friday, 9AM — 9PM Eastern Time Saturday and Sunday 9AM — 6PM Eastern Time

Satety Information
Please see the safety guide that came with your robot, or visit global.irobot.com

4851435 vA
WC# 4851435 vA

©2025 iRobot Corporation, 8 Crosby Drive, Bedford, MA 01730 USA. All rights reserved. iRobot, Roomba, and Roomba Combo are registered trademarks of iRobot Corporation. AutoEmpty and AutoWash are trademarks of iRobot Corporation. Wi-Fi and the Wi-Fi logo are registered trademarks of Wi-Fi Alliance. Apple and App Store are trademarks of Apple Inc., registered in the U.S. and other countries. Google Play is a trademark of Google LLC.

Documents / Resources

iRobot Roomba Plus 405 Combo Robot Plus AutoWash Dock [pdf] User Guide
405, Roomba Plus 405 Combo Robot Plus AutoWash Dock, Combo Robot Plus AutoWash Dock, Robot Plus AutoWash Dock, AutoWash Dock

References

User Manual

iRobot Roomba Plus 405 Combo Robot Plus AutoWash Dock User Guide

Roomba Plus 405 Combo Robot Plus AutoWash Dock

Specifications:

Product Usage Instructions:

Getting Started:

Preparing the Robot:

Activating the Robot:

FAQ:

What cleaning solutions can I use with my robot?

How long should I charge the robot before starting the first
cleaning?

Documents / Resources

References

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