1. Introduction
Thank you for purchasing the GoolRC WLtoys 124008 Brushless RC Car. This 1:12 scale, 4WD high-speed racing car is designed for off-road performance. This manual provides essential information for safe operation, setup, maintenance, and troubleshooting. Please read it thoroughly before using the product.
2. Safety Precautions
- This product is recommended for users aged 16 years and up.
- Always operate the RC car in open areas, away from people, pets, and obstacles.
- Do not operate near public roads, power lines, or water bodies.
- Ensure the battery is fully charged before each use.
- Never leave charging batteries unattended.
- Avoid contact with moving parts to prevent injury.
- Turn off the RC car and remote control when not in use.
- Use only original or approved replacement parts and accessories.
3. Package Contents
Verify that all items listed below are included in your package:
- GoolRC WLtoys 124008 RC Car (1 unit)
- 2.4GHz Remote Controller (1 unit)
- 11.1V 2000mAh Car Battery (1 unit)
- USB Charging Cable (1 unit)
- Cross Wrench (1 unit)

Image: The GoolRC WLtoys 124008 RC car, remote controller, battery, charging cable, and cross wrench included in the package.
4. Product Overview
4.1 RC Car Features
- High-Speed Brushless Motor: Equipped with a 3500KV brushless motor, capable of speeds up to 60 KM/H. Features aluminum fins for enhanced heat dissipation and motor longevity.
- Durable Construction: Features zinc alloy gears for wear resistance and improved service life. The body utilizes anti-explosion PVC color printing, designed for anti-collision and anti-fall functionality across various terrains.
- Advanced Electronics: Includes an independent 35A Electronic Speed Controller (ESC) for good performance, an independent receiver for stable signal, and an independent servo for flexible control.
- All-Terrain Capability: Four anti-slip wheels with shockproof springs provide stability and adaptability to rough terrains such as sand, snow, grass, mountain roads, and rocky paths.
- Modular Battery Design: Features a modular battery for high efficiency and power density.

Image: The WLtoys 124008 RC car, highlighting its 3S Electric 4WD capabilities and 1:12 scale.

Image: Close-up view of the 3500KV brushless motor and internal components of the RC car.

Image: Exploded diagram illustrating the all-metal gear system for durability.

Image: Diagram showing the modular battery installation within the RC car chassis.
4.2 Remote Controller Features
- 2.4GHz System: Provides anti-jamming capability for stable control up to 100 meters.
- Ergonomic Design: Features a steering wheel with a lever for one-hand operation, enhancing control ease.
- Integrated Phone Holder: Equipped with a built-in mobile phone bracket to facilitate real-time control vision via an external camera (camera not included).

Image: The remote control designed for comfortable one-hand operation.

Image: The remote control with a smartphone mounted in its integrated holder, enabling FPV (First Person View) driving with a compatible camera.

Image: Detailed diagram of the 2.4GHz remote control, labeling the power light, power switch, throttle tuning, steering adjustment, steering regulating wheel, trigger, and battery cover.
5. Setup
5.1 Charging the Car Battery
- Connect the 11.1V 2000mAh car battery to the USB charging cable.
- Plug the USB charging cable into a suitable USB power adapter (not included).
- The charging indicator light on the USB cable will show the charging status. Refer to the charger's instructions for specific light indications.
- Charging typically takes approximately 3 hours. Do not overcharge the battery.
- Disconnect the battery once fully charged.
5.2 Installing Remote Control Batteries
- Open the battery compartment cover on the back of the remote control.
- Insert 4 AAA batteries (not included) into the compartment, ensuring correct polarity.
- Close the battery compartment cover securely.
5.3 Installing the Car Battery
- Locate the battery compartment on the RC car.
- Carefully insert the fully charged 11.1V 2000mAh battery into the compartment.
- Connect the battery connector to the car's power connector.
- Secure the battery compartment cover.
6. Operating Instructions
6.1 Powering On and Pairing
- Turn on the remote control first using the power switch. The power light will illuminate.
- Next, turn on the RC car. The car and remote control should automatically pair. If pairing fails, turn both off and repeat the process.
6.2 Basic Controls
- Throttle Trigger: Pull the trigger towards you to accelerate forward. Push the trigger away from you to brake or reverse.
- Steering Wheel: Rotate the steering wheel left to turn the car left, and right to turn the car right.
- Steering Adjustment: Use the steering adjustment knob on the remote to fine-tune the steering trim if the car does not drive straight.
- Throttle Tuning: Use the throttle tuning knob to adjust the neutral position of the throttle.

Image: The RC car demonstrating its high-speed driving capability on a sandy surface.

Image: The RC car navigating challenging rocky terrain, showcasing its off-road capabilities.
6.3 Driving Tips
- Start with slow speeds to familiarize yourself with the controls.
- Practice steering and throttle control in an open, clear area.
- Avoid driving in wet conditions or through deep puddles to prevent damage to electronics.
- Regularly check for loose screws or damaged parts after aggressive driving.
7. Maintenance
7.1 Cleaning
- After each use, especially in dusty or dirty environments, clean the car.
- Use a soft brush or compressed air to remove dirt and debris from the chassis, wheels, and motor area.
- Wipe the body with a damp cloth. Do not use harsh chemicals.
7.2 Storage
- Store the RC car and remote control in a cool, dry place, away from direct sunlight and extreme temperatures.
- Remove batteries from both the car and remote control if storing for extended periods to prevent leakage.
7.3 Component Inspection
- Periodically inspect all moving parts, including gears, axles, and suspension components, for wear or damage.
- Check for loose screws and tighten them as necessary.
- Ensure shock absorbers are functioning correctly.

Image: Detailed view of the simulated metal oil pressure shock absorbers, designed to reduce vibration.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Car does not respond to remote. | Low battery in car or remote; not paired; remote out of range. | Charge car battery; replace remote batteries; re-pair car and remote; ensure within 100m range. |
| Car drives crooked. | Steering trim needs adjustment. | Adjust the steering adjustment knob on the remote control. |
| Reduced speed or power. | Low car battery; motor overheating; debris in drivetrain. | Recharge car battery; allow motor to cool; clean car and inspect gears. |
| Unusual noises during operation. | Damaged gears; debris in moving parts. | Inspect gears for damage and replace if necessary; clean drivetrain. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | WLtoys 124008 |
| Scale | 1:12 |
| Drive System | 4-Wheel Drive (4WD) |
| Motor Type | 3500KV Brushless Motor |
| Max Speed | 60 KM/H |
| Remote Control Frequency | 2.4GHz |
| Control Distance | Up to 100 meters |
| Car Battery | 11.1V 2000mAh Li-ion |
| Run Time | Approximately 16 minutes |
| Charging Time | Approximately 3 hours |
| Remote Control Batteries | 4 x AAA (not included) |
| Dimensions (Car) | 34.7 x 21.1 x 12.2 cm (13.66 x 8.31 x 4.8 inches) |
| Item Weight | 4.54 pounds (approx. 2.06 kg) |
| Recommended Age | 16 years and up |

Image: Visual representation of key product specifications including size, motor, battery, speed, and control distance.
10. Warranty and Support
For warranty information, technical support, or replacement parts, please refer to the contact information provided with your purchase or visit the official GoolRC website. Keep your proof of purchase for warranty claims.
Manufacturer: GoolRC