1. Product Overview
The WLtoys A959-B is a 1:18 scale, 4WD high-speed remote control racing car designed for both indoor and outdoor use. It features a powerful 540 brushed motor, capable of reaching speeds up to 70km/h, and a 2.4GHz radio system for stable control. Its robust design and flexible shock absorbers allow it to operate on various terrains.

Image 1.1: The WLtoys A959-B RC Car with its 2.4GHz remote control.
2. Package Contents
Before proceeding, please verify that all items are present in the package:
- WLtoys A959-B RC Car
- 2.4GHz Remote Control Transmitter
- 7.4V 1500mAh Lithium Battery
- USB Charging Cable
- Cross Wrench
- Instruction Manual

Image 2.1: Illustration of the WLtoys A959-B RC Car package contents, including the car, remote, battery, charger, and tools.
3. Setup Guide
3.1 Charging the Car Battery
The included 7.4V 1500mAh lithium battery may have a partial charge for testing purposes. For optimal performance and extended playtime, it is recommended to fully charge the battery before first use.
- Connect the 7.4V 1500mAh lithium battery to the USB charging cable.
- Plug the USB charging cable into a standard USB power adapter (not included) or a computer USB port.
- The charging indicator light on the USB cable will show the charging status (refer to the charger's specific instructions for light indications).
- Charging typically takes several hours. Disconnect the battery once fully charged.

Image 3.1: Close-up of the 7.4V 1500mAh Lithium Battery, highlighting its high capacity and reliable discharge for long battery life.
3.2 Installing Batteries in the Remote Control
The remote control requires 4 x 1.5V AA batteries (not included).
- Locate the battery compartment on the back of the remote control.
- Open the battery compartment cover.
- Insert 4 x 1.5V AA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.

Image 3.2: Detailed view of the 2.4GHz Transmitter, showing the battery compartment for 4 x 1.5V AA batteries.
3.3 Installing the Car Battery
- Carefully remove the car body shell by detaching the body clips.
- Locate the battery compartment or tray within the car chassis.
- Insert the fully charged 7.4V 1500mAh lithium battery into the compartment.
- Connect the battery connector to the car's power connector, ensuring a secure fit.
- Replace the car body shell and secure it with the body clips.

Image 3.3: Internal view of the RC car, illustrating the placement of the rechargeable battery and other components.
4. Operating Instructions
4.1 Powering On and Pairing
- Turn on the remote control by sliding the power switch. The indicator light should illuminate.
- Turn on the RC car by pressing its power button.
- The remote control and car should automatically pair. If not, turn both off and on again.
4.2 Basic Controls
Familiarize yourself with the remote control's functions:
- Trigger: Pull the trigger to move the car forward. Push the trigger to move the car backward/brake.
- Steering Wheel: Turn the wheel left to steer the car left, turn right to steer the car right.
- Fine-tuning Dials: Use the 'Turned to fine-tuning' dial to adjust steering trim and the 'Forward/Backward fine-tuning' dial to adjust throttle trim, ensuring the car drives straight and stops correctly when the trigger is neutral.

Image 4.1: Diagram of the 2.4GHz Transmitter, detailing the trigger, steering wheel, and fine-tuning controls.
4.3 Driving on Various Terrains
The WLtoys A959-B is designed for multiple ground applications, offering excellent flexibility and climbing ability. It performs well on:
- Flat ground
- Gravels
- Grassland
- Off-road paths
- Mud roads
- Sandy land
- Rocky surfaces

Image 4.2: The RC car demonstrating its capability on diverse terrains including off-road, mud, sand, and rock.
4.4 High-Speed Operation
This RC car is capable of high speeds up to 70km/h. Exercise caution when operating at high speeds, especially in open areas, to avoid collisions and ensure safety.

Image 4.3: The WLtoys A959-B RC Car depicted in a high-speed scenario, emphasizing its 70KM/H capability.
5. Maintenance
Regular maintenance will ensure the longevity and optimal performance of your RC car.
5.1 Cleaning
- After each use, especially after driving on dirty or wet surfaces, clean the car to remove dirt, dust, and debris.
- Use a soft brush or compressed air to clean hard-to-reach areas.
- Wipe the body and chassis with a damp cloth. Avoid using harsh chemicals.
5.2 Battery Care and Storage
- Always disconnect the battery from the car when not in use.
- Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures.
- Do not overcharge or over-discharge the battery. Follow charging instructions carefully.
- If storing for extended periods, charge the battery to approximately 50% capacity.
5.3 General Inspection
- Periodically check all screws and fasteners to ensure they are tight.
- Inspect the tires for wear and tear. The premium rubber tires are designed for strong grip and durability.
- Check the shock absorbers for proper function and any signs of damage.
- Ensure the motor and transmission components are free from obstructions.

Image 5.1: Close-up of the premium rubber tires, highlighting their non-slip properties and strong grip power for various surfaces.
6. Troubleshooting
If you encounter issues with your WLtoys A959-B RC Car, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Car does not respond to remote control. | Low battery in car or remote; Not paired; Power switch off. | Ensure both car and remote have charged batteries. Turn both off, then turn on remote first, then car to re-pair. Check power switches. |
| Short battery life. | Battery not fully charged; Old/damaged battery. | Ensure battery is fully charged before use. Consider replacing the battery if it no longer holds a charge. |
| Car pulls to one side. | Steering trim needs adjustment. | Use the 'Turned to fine-tuning' dial on the remote control to adjust the steering trim until the car drives straight. |
| Motor/ESC issues (e.g., smoke, no movement). | Overheating; Electrical short; Component failure. | Immediately turn off the car. Allow components to cool. Check for visible damage or loose wires. If issues persist, contact customer support. |
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | A959-B |
| Scale | 1:18 |
| Drive System | 4-Wheel Drive (4WD) |
| Max Speed | 70 KM/H |
| Motor Type | Upgraded 540 Brushed Motor |
| Remote Control Frequency | 2.4GHz |
| Remote Control Range | Approximately 100 meters |
| Car Battery | 7.4V 1500mAh Lithium Battery |
| Play Time | 8-15 minutes (approx.) |
| Remote Control Batteries | 4 x 1.5V AA Batteries (not included) |
| Dimensions (L x W x H) | 240mm x 180mm x 82mm (approx.) |
| Item Weight | 3.49 pounds |

Image 7.1: Diagram illustrating the approximate dimensions of the WLtoys A959-B RC Car.
8. Warranty and Support
GoolRC products are manufactured to high-quality standards. For any issues or inquiries regarding your WLtoys A959-B RC Car, please contact the seller or manufacturer directly.
Protection Plans: Additional protection plans may be available for purchase. Please refer to your point of purchase for details on extended warranty options.
Customer Service: For technical support or warranty claims, please have your model number (A959-B) and purchase information ready when contacting support.