The OEM Dashboard for AOSTIR E-Bikes
First, the EBIKE LCD DISPLAY SW-U-LCD FOR S07/S18 is the factory-spec dashboard for AOSTIR mountain e-bikes . Whether you own an S07 or S18 model, this display acts as the command center for your 48V system, translating real-time telemetry into an easy-to-read monochrome LCD screen.
Technical Specifications
This display comes from King Meter, a leading manufacturer of e-bike display systems . The SW-U-LCD features multiple voltage options and robust construction for all-weather riding .
| Specification | Value |
|---|---|
| Model Number | SW-LCD-U |
| Operating Voltage | 24V / 36V / 48V |
| Display Type | Monochrome LCD |
| Dimensions | 103.8 × 61.4 × 53.6 mm |
| Communication | UART / CAN |
| Protection Level | IP66 (weatherproof) |
| Certificates | CE, RoHS, EN 15194 |
Key Features and Readouts
This display provides critical ride data, ensuring you stay informed about your bike’s status :
| Feature | Readout |
|---|---|
| Speed | Current, maximum (MAX), and average (AVG) |
| Power | Real-time motor wattage |
| Battery | Capacity (5-bar display with low voltage warning) |
| Assistance | 5 levels of Pedal Assist System (PAS) |
| Distance | Single trip (TRIP) and total kilometers (ODO) |
| Time | Trip time indicator |
| Error Codes | Automatic fault display |
Button Functions and Controls
The SW-U-LCD uses a 30-button unit with three simple controls :
| Button | Function |
|---|---|
| MODE | Power on/off (press 1.5s), cycle through TRIP/ODO (press) |
| UP | Increase PAS level, view MAX/AVG speed (hold) |
| DOWN | Decrease PAS level, activate walk assist (hold) |
The walk assist feature pushes the bike at 6 km/h (3.7 mph) – perfect for walking up steep hills or through tricky sections .
Installation Guide
Replacing this display takes about 15 minutes with basic tools .
Tools needed:
- 3 mm Allen wrench
- Zip ties (for cable management)
- Power down – Turn off your e-bike and disconnect the battery
- Remove old display – Trace the cable to the silver connector, untwist, and pull apart
- Remove the bolts – Use a 3mm Allen wrench to remove the display and remote bolts
- Mount the new display – Position it on the handlebar center, tighten securely
- Mount the remote – Place on the left side of the handlebar
- Connect the wiring – Align internal notches and push connectors together
- Tighten the connection – Twist the silver metal portion to fully seat
- Replace zip ties – Secure the cable to your frame
- Test before riding – Reinstall the battery and verify all functions work
Programmable Settings
After installation, you can customize the display settings by holding both UP and DOWN buttons for 2.5 seconds .
| Parameter | Function | Default | Range |
|---|---|---|---|
| P01 | Wheel diameter | 26 inches | 18-28 inches |
| P02 | Max speed limit | 25 km/h | 12-40 km/h |
| P03 | Backlight brightness | Level 1 | Levels 1-3 |
| P04 | Display unit | km/h | km/h or MPH |
To set wheel diameter correctly:
- Measure the actual diameter of your wheel
- For 26″ fat tires, use 26 inches
- For 20″ folding bike wheels, use 20 inches
Backlight and Headlight Control
The SW-U-LCD features an adjustable backlight for night riding. Hold both UP and MODE for 3 seconds to turn the backlight on or off .
When the backlight activates, the display also sends a signal to turn on your bike’s headlight (if equipped with the matching controller) .
Brightness levels:
- Level 1: Minimum brightness (default, saves battery)
- Level 2: Medium brightness
- Level 3: Maximum brightness
Error Codes and Troubleshooting
When something goes wrong, the display automatically shows an error code .
| Error Code | Meaning | What To Do |
|---|---|---|
| 21 | Abnormal current | Check motor and controller connections |
| 22 | Throttle fault | Inspect throttle wiring, replace throttle |
| 23 | Motor phase problem | Check phase wire connections |
| 24 | Motor hall defect | Inspect hall sensor wires (5-pin) |
| 25 | Brake failed | Check brake cutoff switches |
| 30 | Abnormal communication | Verify display-controller connection |
The bike will not run until you fix the underlying problem and the error code clears .
USB Charging Feature
The SW-U-LCD includes a USB charging port (5V/500mA or 5V/1A depending on version) . You can charge your phone, GPS, or other devices directly from the display while riding.
Compatibility with S07 and S18 Models
This display works with AOSTIR S07 and S18 models that use UART communication protocol .
Before purchasing, verify:
- Your bike uses a 24V, 36V, or 48V system
- Your controller uses UART communication (check with manufacturer)
- The connector matches (waterproof Julet 4-pin/5-pin)
Walk Assist Mode
The push cruise control (walk assist) activates when you hold the DOWN button for several seconds . The bike will move at a steady 6 km/h (3.7 mph) without pedaling.
Important safety notes:
- Use walk assist only while walking beside the bike
- Do not use walk assist while riding
- Release the button to deactivate immediately
Operating Temperature and Care
The SW-U-LCD operates reliably in extreme conditions :
- Operating temperature: -20°C to +60°C (-4°F to 140°F)
- Storage temperature: Below -10°C causes temporary darkening
- Screen recovers when temperature rises above -10°C
- Don’t hit or knock the display
- Avoid direct sunlight when parked
- Keep away from downpours (though IP66 rated)
- Clean with soft cloth only
Pros
- OEM factory display for AOSTIR S07/S18 models
- IP66 waterproof rating for all-weather riding
- 5-level PAS with easy UP/DOWN controls
- Walk assist mode (6 km/h) for pushing
- USB charging port for devices
- Programmable wheel diameter and speed limit
- Automatic error code display
- Backlight with headlight control
- Compatible with 24V, 36V, and 48V systems
- CE and RoHS certified
Cons
- Requires matching controller communication protocol (UART)
- Installation needs basic electrical knowledge
- 30-button remote cable length may limit placement
- Monochrome display (not color)
- No Bluetooth connectivity on standard model
Who Needs This Display?
The EBIKE LCD DISPLAY SW-U-LCD FOR S07/S18 is perfect for:
- AOSTIR S07 owners with a cracked or malfunctioning original display
- AOSTIR S18 owners needing a direct OEM replacement
- DIY builders using King Meter controllers requiring UART displays
- E-bike mechanics stocking compatible replacement parts
- Anyone restoring an S07 or S18 to factory condition
Why Choose the SW-U-LCD Display?
In conclusion, the EBIKE LCD DISPLAY SW-U-LCD FOR S07/S18 provides the exact OEM fit for your AOSTIR e-bike . With 24-month factory warranty on the display function, you get reliable performance backed by manufacturer support .
The IP66 waterproof rating means you can ride confidently in wet conditions without damaging the screen . The programmable wheel diameter ensures accurate speed readings regardless of tire size. The error code diagnostics help you troubleshoot problems quickly, saving time and money on repairs.
When your AOSTIR S07 or S18 needs a replacement display, the SW-U-LCD delivers the perfect OEM solution.
For more options, browse our Collection of E-Bike Displays or read our E-Bike Troubleshooting Guide to diagnose common issues.
