언어 및 통화
AUTOOL AS502 Brake Fluid Water-Content Tester
US$30.00
주요 특징
- 도트3 / 도트4 / 도트5.1
- Normal + Expert Modes
- 260 mm Flexible Probe
- Water + Status Display
- DOT3 / DOT4 / DOT5.1: Screen water content in supported DOT3, DOT4, and DOT5.1 brake fluids.
- Normal + Expert Modes: Use standard fluid-type testing or select Expert mode for supported DOT4 brand references.
- 260 mm Flexible Probe: Reach brake-fluid reservoirs with the flexible gooseneck probe.
- Water + Status Display: View water content with OK, warning, or suggested-replacement indicators on the 2.8-inch backlit screen.
- 3 - 년 보증 본체 3년, 부속품 1년
- 90- 일 반품 90일 이내 반품 가능
- 공식 스토어 정품 · 직접 지원
AUTOOL AS502 · Brake Fluid Water-Content Tester
Match the Fluid Mode Before Screening Moisture
Screen water content in supported DOT3, DOT4, and DOT5.1 brake fluids after matching the fluid mode. AS502 offers a standard test path plus Expert references for supported DOT4 brands, while the flexible reservoir probe and backlit display keep sampling and status review together. Use the result with the vehicle’s service criteria.
- DOT 3 / 4 / 5.1 Modes
- Standard And Expert Paths
- 260 mm Flexible Probe
- 2.8인치 백라이트 디스플레이
- 4 × AAA Battery Power
주요 특징
Normal and Expert Brake Fluid Modes
Water-Content Screening
The flexible reservoir probe screens brake-fluid water content in the selected supported mode. It does not generate or measure hydraulic brake pressure.
Multiple Brake Fluid Support
Normal mode supports DOT3, DOT4, and DOT5.1 brake fluid, making AS502 suitable for common vehicle brake fluid checks.
Normal And Expert Modes
Switch between standard brake-fluid type testing and expert mode for selected DOT4 brands when more targeted fluid selection is needed.
260mm Flexible Probe
The 260mm gooseneck probe helps reach the brake fluid reservoir more easily during vehicle maintenance.
304 Stainless Steel Outer Hose
The probe hose outer layer uses 304 stainless steel for oil resistance, oxidation resistance, and corrosion resistance.
2.8-inch Backlit Display
The 2.8-inch LCD backlit display makes the result easier to read in bright or low-light working conditions.
Single-Handed Control
The silicone grip and handheld control layout support single-handed brake fluid testing.
AAA Battery Power
The tester uses 6V power from 4 × 1.5V AAA batteries. Install batteries with the correct polarity before operation.
Water Content And Status
The screen displays brake fluid water content together with OK, warning and suggested replacement indicators.
5-Minute Auto Power-Off
The tester automatically powers off after 5 minutes without operation to conserve battery power.
3년 보증 지원
본체: 3년 보증. 표준 부속품: 1년 보증. 보증 정책.
서비스 워크플로
Select, Immerse, Read and Clean
단계별 진행 상황1 / 7
01
배터리 설치
Open the rear battery cover, insert 4 × 1.5V AAA batteries with correct polarity, then close the cover securely.
02
전원 켜짐
Long press the power button for more than 2 seconds to turn on the tester.
03
Clean The Probe
Wipe the probe clean before each measurement to avoid residue affecting the result.
04
Open The Reservoir
Open the brake fluid reservoir cap and prepare the brake fluid sample area for testing.
05
Select Fluid Type
Press the selection button to choose DOT3, DOT4, DOT5.1, or an available expert-mode DOT4 brand.
06
Immerse And Test
Submerge the probe into the brake fluid, press the test button, and read the displayed water content percentage and status indicator.
07
Guided Fluid Check
Clean the probe, select the correct brake fluid type, immerse the probe and start the test. Read the water content percentage and status on the screen.
안전한 사용
Separate Fluid Fit from Service Verdict
Brake Fluid Water Test
AS502 is designed to test the water content percentage in brake fluid. It is not an engine oil, transmission fluid, or power steering fluid tester.
Use Supported Fluids Only
Use AS502 with supported brake fluid types. Normal mode is for DOT3, DOT4, and DOT5.1 brake fluid; expert mode is for selected DOT4 brands.
Install 4 AAA Batteries
The tester uses 6V power from 4 × 1.5V AAA batteries. Install batteries with the correct polarity before operation.
Routine Check Suggestion
For routine maintenance, checking brake fluid around every 40,000 km is recommended, depending on vehicle condition and service requirements.
Clean The Probe
Wipe the probe clean before each measurement and clean it after use to avoid fluid residue affecting later tests.
건조한 상태로 보관하세요
If the tester will not be used for a long time, remove all batteries and store the unit in a dry place at normal room temperature.
Use the Moisture Screening Result
Select the exact brake-fluid mode, clean the probe between samples and use the displayed moisture/grade value for quick fluid screening. It is not a standardized wet boiling-point result.
모델 비교
Choose the Right Fluid Test Method
모델 가이드
Choose one or more models. AS502 is selected by default.
1개 모델이 선택되었습니다.
선택된 모델이 없습니다. 비교할 모델을 선택하세요.
| 제품명 | AS501 Brake Fluid Tester | AS502 Brake Fluid Tester | AS503 Engine Oil Quality Tester | AS505 Transmission Fluid Tester | AS506 Brake Fluid Boiling Point Tester | AS507 Power Steering Fluid Tester | AS509 Coolant Boiling Point Tester |
|---|---|---|---|---|---|---|---|
| Test Method & Application | |||||||
| 감지 기술 | Pressure Boost Detection Technology |
Water-content screening; no hydraulic pressure generation or measurement |
Optical Probe Technology |
Optical Probe Technology |
Sample Heating Technology |
Optical Probe Technology |
Sample Heating Technology |
| 작동 원리 | Brake Fluid (Water Content) |
Brake Fluid (Water Content) |
Engine Oil (Transmittance) |
Transmission Fluid(Transmittance) |
Brake Fluid (Boiling Point) |
Steering Fluid (Transmittance) |
냉각수 |
| Test Mode Selection | 일반 모드 |
Normal Mode/Expert Mode |
Gasoline Engine/Diesel Engine |
Automotive Transmission Fluid |
Normal Mode/Brand Mode |
Automotive Steering Gear |
Normal Mode/Brand Mode |
| Boiling Point Reference Value | × |
× |
× |
× |
✓ |
× |
✓ |
| 일반 모드 | 6 유형 ENV-4、ENV-6 DOT3、DOT4、DOT5、DOT5.1 |
3 유형 DOT3、DOT4、DOT5.1 |
× |
× |
DOT3, DOT4 and DOT5.1 (procedure-confirmed selections) |
× |
23 Coolant Brands For ACDELCO、BASF、BOSCH、CASTROL、ENGINE_ICE、EVANS、FORD、HONDA、JOHN_DEERE、KUNLUN、MOBIL、MOPAR、NISSAN、OMTECH、PEAK、PRESTONE、RECOCHEM、SHELL、SKI-DOO、ZEREX、STAR_BRITE、TOTAL、TOYOTA |
| 측정 및 응답 | |||||||
| Temperature Unit Switching | × |
× |
℃/℉ |
℃/℉ |
℃/℉ |
℃/℉ |
℃/℉ |
| 온도 측정 범위 | × |
× |
0-85 ℃ 0-185°F |
0-85 ℃ 0-185°F |
0-320 ℃ 0-608°F |
0-85 ℃ 0-185°F |
Diluted Coolant Boiling Point Range： 100 ° C ~ 120 ° C (212 ° F ~ 248 ° F) Original Manufacturer Coolant Boiling Point Reference Range 106 ° C ~ 191 ° C (221 ° F ~ 376 ° F) |
| 시험 기간 | 10초 응답 |
10초 응답 |
10초 응답 |
10초 응답 |
16초 응답 |
10초 응답 |
20~40s Response |
| Display, Probe & Power | |||||||
| Backlit Display Screen | 1.8 인치 |
2.8 인치 |
2.8 인치 |
2.8 인치 |
1.54 인치 |
2.8 인치 |
1.6 인치 |
| Test Cable Length | 26cm |
26cm |
80cm |
80cm |
4cm |
80cm |
130cm |
| 전원 공급 전압 | 3V |
6V |
6V |
6V |
12V |
6V |
10-14V |
| 호스 재질 | 산화철 |
304 스테인레스 스틸 |
테플론 |
테플론 |
× |
테플론 |
× |
사용 설명서 및 지원
Find the Manual and Fluid-Test Guidance
AUTOOL AS502 User Manual
PDF 설명서를 열어보세요 AUTOOL AS502 brake-fluid selection, normal and expert modes, water-content screening, result interpretation, probe cleaning, safety and troubleshooting support.
패키지 내용물
상자 안에 무엇이 들어 있는지 확인해 보세요
- 본체AUTOOL AS502 brake fluid tester with flexible probe
- 소매 박스AS502 product packaging
- 항목User Manual AS502 user manual
- 배터리 The tester uses 4 × 1.5V AAA batteries. Confirm whether batteries are included with your selected package before ordering.
구매자 질문
Fluid Fit, Method and Result Questions
무엇을 하는가? AUTOOL AS502 Test?
AUTOOL AS502 tests the water content percentage in brake fluid. It helps users evaluate brake fluid condition and decide whether maintenance or replacement may be needed.
Which Brake Fluid Types Does AS502 Support?
Normal mode supports DOT3, DOT4, and DOT5.1 brake fluid. Expert mode supports selected DOT4 brands, including MOTUL, ATE, FERODO, MOBIL, BREMBO, TRW, BOSCH, CASTROL, TOTAL, VALEO, FUCHS, and TEXTAR.
What Batteries Does AS502 Use?
AS502 uses 6V power from 4 × 1.5V AAA batteries. Open the rear battery cover, insert the batteries with the correct polarity, and close the cover securely before use.
How Do I Use AS502 For A Brake Fluid Test?
Clean the probe, open the brake fluid reservoir cap, select the correct brake fluid type or expert-mode brand, immerse the probe into the brake fluid, then press the test button. The screen will display the water content percentage and status indication.
How Should I Read The Test Result?
The percentage value shows the water content in the brake fluid. OK indicates the water content is good, ! indicates a warning, and × indicates replacement is suggested. The manual describes 0%-2% as a pass range, 2%-3% as a warning range, and above 3% as a replacement range.
How Often Should Brake Fluid Be Tested?
For routine maintenance, checking brake fluid around every 40,000 km is recommended. Actual testing frequency should also follow the vehicle condition, driving environment, and service requirements.
How Should I Maintain The Probe After Use?
Wipe the probe clean after use and avoid leaving stains or brake fluid residue on the probe. If the tester will not be used for a long time, remove all batteries and store it in a dry place at normal room temperature.
What Is The Difference Between AS502 And Other AUTOOL Fluid Testers?
AS502 is for brake fluid water-content testing with a 2.8-inch display, 6V power, and normal/expert modes. AS503 is for engine oil quality, AS505 is for transmission fluid, AS506 is for brake fluid boiling point, and AS507 is for power steering fluid. Choose by the fluid type and test principle you need.
보증 기간은 얼마나 되나요?
본체: 3년 보증. 표준 부속품: 1년 보증. 보증 정책.
고객 리뷰
리뷰 남기기
Jonah Hofmann ✓ 구매 확인 완료 -
The AS502 perfectly meets my needs.
The AS502 perfectly meets my needs. My car has recently been experiencing issues with insufficient brake pressure and soft brakes. After searching online, everyone gave me advice on whether I need to replace the brake fluid. This device tests the water content in the brake fluid to determine whether my car’s brake fluid needs to be replaced. It’s easy to operate and suitable for novices.
일러스트 Vladyslav ✓ 구매 확인 완료 -
I am very satisfied with the AUTOOL AS502 I purchased.
I am very satisfied with the AUTOOL AS502 I purchased. The device is compact and easy to operate. It can determine whether the brake fluid needs to be replaced by testing the water content of the brake fluid. It is a very practical product.
서양 평지 ✓ 구매 확인 완료 -
This brake fluid tester determines whether the car's brake head needs to be…
This brake fluid tester determines whether the car’s brake head needs to be replaced by detecting the water content of the brake fluid. When used with a brake fluid replacement machine, the number of times the brake fluid needs to be replaced is much faster.