1. Introduction
The AUTOOL AS501 Brake Fluid Tester is an advanced automotive diagnostic tool designed to accurately assess the quality of brake fluid by measuring its water content. Utilizing boosting detection technology and a built-in intelligent algorithm, the AS501 provides a quick and non-destructive method to determine the condition of your vehicle's brake fluid.
Moisture absorption is a primary cause of brake fluid degradation, which can severely compromise the safety and reliability of the braking system. Regular testing with the AS501 allows for timely replacement of brake fluid, especially if the water content exceeds 3%, thereby ensuring optimal braking performance and driving safety.
2. Key Features
- Boost Pressure Detection System: Employs new boost detection technology and intelligent big data algorithms for stable performance and accurate water content detection in brake fluid.
- Wide Compatibility: Supports testing for DOT3, DOT4, DOT5, DOT5.1, ENV4, and ENV6 brake fluid types, covering most common brake fluids on the market.
- Built-in High-Sensitivity Sensor: Provides accurate test results within 10 seconds, displayed on a high-definition screen.
- Corrosion-Resistant Design: Features a stainless steel flexible hose and an outer layer made of iron oxide material, offering excellent resistance to oxidation, oil contamination, and corrosion, extending the tester's lifespan.
- HD Backlit Display: Equipped with a 1.8-inch HD backlit display for clear visibility of test results in various lighting conditions.
- Lightweight and Portable: Compact and easy to handle, perfect for mobile testing scenarios.
- Energy-Efficient: Powered by two AA 1.5V batteries, ensuring ultra-low power consumption and long-lasting operation.
3. Product Specifications
| Parameter | Value |
|---|---|
| Input Voltage | AA 1.5V x 2 |
| Operating Temperature | -10°C ~ 50°C |
| Storage Temperature | -20°C ~ 60°C |
| Supported Oil Types | DOT3, DOT4, DOT5, DOT5.1, ENV4, ENV6 |
| Display | 1.8-inch HD Backlit Display |
| Test Cable Length | 26cm |
| Test Duration | 10 seconds response |
| Hose Material | 304 Stainless Steel (probe), Iron Oxide (outer layer) |
| Dimensions (Approx.) | 168mm (6.61inch) Length, 50mm (1.97inch) Width |
4. Package Contents
The AUTOOL AS501 Brake Fluid Tester package includes:
- 1 x AUTOOL AS501 Main Unit
- 1 x User Manual
5. Setup
5.1 Battery Installation
- Locate the battery compartment on the back of the AUTOOL AS501 main unit.
- Slide open the battery compartment cover.
- Insert two (2) AA 1.5V batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
- Close the battery compartment cover securely.
6. Operating Instructions
Follow these steps to accurately test your brake fluid:
- Prepare the Probe: Wipe the test probe clean with a dry cloth to ensure no contaminants affect the reading.
- Access Brake Fluid Reservoir: Open the brake fluid reservoir cap in your vehicle.
- Select Fluid Type: Power on the device. Use the 'Switch Button' (often labeled with an arrow or similar icon) to select the specific type of brake fluid (e.g., DOT3, DOT4) you intend to test. The selected type will be displayed on the screen.
- Immerse Probe: Carefully immerse the test probe into the brake fluid in the reservoir. Ensure the probe tips are fully submerged.
- Start Test: Press the 'Start Button' (often a play-like triangle icon) to initiate the measurement.
- Read Results: The measurement result, indicating the water content percentage, will be displayed on the 1.8-inch HD backlit screen within approximately 10 seconds.
7. Maintenance
- Cleaning: After each use, thoroughly wipe the test probe clean with a dry, lint-free cloth to remove any brake fluid residue. This prevents corrosion and ensures accurate future readings.
- Storage: Store the AUTOOL AS501 in a dry, cool place, away from direct sunlight and extreme temperatures. Keep it in its original packaging or a protective case when not in use.
- Battery Replacement: If the display indicates low battery or the device does not power on, replace both AA batteries with new ones, ensuring correct polarity.
- Avoid Harsh Chemicals: Do not use abrasive cleaners or solvents on the device, as this may damage the casing or electronic components.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Dead or incorrectly installed batteries | Replace batteries with new AA 1.5V batteries, ensuring correct polarity. |
| Inaccurate readings | Probe not clean; incorrect fluid type selected; probe not fully submerged | Clean probe thoroughly; ensure correct brake fluid type is selected; fully immerse probe tips in fluid. |
| Display is dim or unreadable | Low battery; backlight off | Replace batteries. Press the Power/Backlight button to toggle backlight. |
9. Warranty and Support
AUTOOL stands behind the quality of its products. The AS501 Brake Fluid Tester comes with the following:
- 3-Year Warranty: All AUTOOL products purchased from an authorized store are covered by a 3-year warranty.
- Customer Support: For any inquiries or assistance, please contact AUTOOL customer support. All emails will be answered within 24 hours.
- Satisfaction Guaranteed: Free return or replacement is available within 7 days if you encounter any quality problems with your product.
