Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your TOTO WASHLET+ S7A Electronic Bidet Toilet Seat. Please read this manual thoroughly before use to ensure proper function and safety. Keep this manual for future reference.
Safety Information
Observe all safety warnings and precautions to prevent injury or product damage. This electronic bidet seat is designed for household use. Do not attempt to disassemble or repair the unit yourself. Always disconnect power before performing maintenance or cleaning.
- Ensure the electrical outlet is a 120V GFCI outlet.
- Do not immerse the unit in water or spray water directly onto electrical components.
- Keep children and individuals with reduced physical, sensory, or mental capabilities away from the unit unless supervised.
- Avoid using abrasive cleaners or harsh chemicals on the unit.
Package Contents
Verify that all components are present before beginning installation.

Figure 1: Included components and required tools for installation.
- WASHLET Electronic Bidet Seat
- Remote Control & Wall Mount
- Mounting Bracket
- Tee Connector
- Installation Hardware
Required Tools & Utilities
Before installation, ensure you have the following:
- 120V GFCI Electrical Outlet (required for operation)
- Screwdriver
- Tape Measure
- Adjustable Wrench (not pictured but generally useful for plumbing connections)
Setup and Installation
Toilet Compatibility
The TOTO WASHLET+ S7A is designed to fit most standard elongated toilets. It is also compatible with TOTO WASHLET+ T20/T40 toilets for a concealed connection and streamlined appearance.

Figure 2: WASHLET Fit Guide for standard elongated and round toilets.
Installation Steps
Follow these steps for proper installation:

Figure 3: Step-by-step installation process.
- Remove Existing Toilet Seat: Use a screwdriver to remove the bolts securing your current toilet seat.
- Install Mounting Bracket: Position the mounting bracket over the toilet seat holes and secure it with the provided hardware. Adjust the bracket position as needed for optimal seat alignment.
- Attach WASHLET Seat: Slide the WASHLET seat onto the installed mounting bracket until it clicks into place.
- Connect Water Supply and Power: Turn off the water supply to the toilet. Disconnect the existing water supply line from the toilet tank. Install the provided tee connector to the toilet tank's fill valve. Connect the WASHLET's water supply hose to the tee connector. Reconnect the main water supply line. Plug the WASHLET into a 120V GFCI outlet. Turn the water supply back on and check for leaks.
Optional Accessories
For toilets with difficult-to-reach fill valves, such as some skirted models, optional accessories may be required.

Figure 4: Optional accessories for specific toilet configurations.
- 2 Inch Extender (9AU321-A): May be needed for certain skirted toilets to access the fill valve.
- 6 Inch Hose (THU9090R): An extended hose might be necessary for specific plumbing setups.
Operating Instructions
Your TOTO WASHLET+ S7A offers a range of features for enhanced personal hygiene and comfort. All functions are controlled via the wireless remote control.

Figure 5: Remote control functions.
Key Features and Functions
- Warm Water Cleansing: Provides an instant and continuous stream of warm water for effective cleansing.
- AIR-IN WONDER WAVE: Infuses air into water droplets for a gentle yet thorough clean.
- Heated Seat: Adjustable temperature settings for comfort.
- Auto Open/Close Lid: The lid automatically opens and closes as you approach and depart the toilet.
- Nightlight: Gently illuminates the toilet bowl for nighttime use.
- EWATER+: Electrolyzed water mists the wand and toilet bowl, reducing bacteria and waste adhesion.
- PREMIST: Mists the toilet bowl surface before each use to help prevent waste from sticking.
- Deodorizer: Minimizes odors during use.
- Warm Air Dryer: Provides a comfortable warm air stream for drying after cleansing.
- User Memory Settings: Store up to two preferred cleansing settings for quick access.

Figure 6: Visual representation of key comfort and hygiene features.

Figure 7: Additional comfort and cleaning features.
Cleansing Functions

Figure 8: Adjustable water spray and pressure options.
- Rear Spray: For effective posterior cleansing.
- Soft Rear: A gentler stream for posterior rinsing.
- Front Spray: A soft stream designed for delicate anterior areas.
- Oscillating Spray: The wand moves back and forth for a wider cleansing area.
- Pulsating Spray: Varies water pressure for a massage-like effect.
- Adjustable Wand Position: Customize the wand's position for optimal cleansing.
- Adjustable Water Pressure: Control the intensity of the water spray.
Maintenance
Regular maintenance ensures the longevity and hygienic performance of your WASHLET+ S7A.
Wand Cleaning

Figure 9: Self-cleaning wand mechanism.
- The wand automatically cleans itself with EWATER+ before and after each use.
- The wand is protected by a door when not in use, preventing debris accumulation.
Seat Cleaning and Removal

Figure 10: Quick release button for easy seat removal.
- To clean the seat and toilet area thoroughly, press the quick release button located on the side of the unit to easily remove the WASHLET seat.
- Clean the seat and toilet surfaces with a mild, non-abrasive cleaner and a soft cloth.
- Do not use harsh detergents, abrasive cleaners, or brushes that could scratch the surface.
- Ensure the unit is completely dry before reattaching and restoring power.
Troubleshooting
If you encounter issues with your WASHLET+ S7A, refer to the following common solutions. For persistent problems, contact TOTO customer support.
- No Power: Check if the power cord is securely plugged into a 120V GFCI outlet. Verify the GFCI outlet has not tripped.
- No Water Spray: Ensure the water supply valve to the toilet is fully open. Check if the water supply hose is properly connected and not kinked.
- Weak Water Pressure: Adjust the water pressure setting on the remote control. Ensure the water supply valve is fully open.
- Lid Not Opening/Closing Automatically: Check for obstructions around the sensor. Ensure the auto open/close feature is enabled in the settings.
- Remote Control Not Responding: Replace the remote control batteries. Ensure there are no obstructions between the remote and the WASHLET unit.
Specifications
Detailed specifications for the TOTO WASHLET+ S7A Electronic Bidet Toilet Seat.

Figure 11: Product dimensions.
| Model Number | SW4736AT40#01 |
| Color | Cotton White |
| Material | Plastic |
| Style | Contemporary Lid |
| Shape | Elongated (Oval) |
| Product Dimensions (L x W) | 21"L x 15"W (530mm L x 383mm W) |
| Item Weight | 14.92 pounds |
| Power Supply | 120V AC, 60Hz (GFCI outlet required) |
| Water Heating Method | Instantaneous (Tankless) |
| Certifications | IAPMO (International Association of Plumbing and Mechanical Officials) Certified |
Warranty and Support
TOTO products are manufactured to high-quality standards. For specific warranty details, please refer to the warranty card included with your product or visit the official TOTO website. For technical assistance, replacement parts, or further inquiries, please contact TOTO customer support.
Additional Resources
For interactive 3D instructions, you can download the BILT Intelligent Instructions app.

Figure 12: BILT Intelligent Instructions app for interactive guides.





