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AUTOOL AST603 Pulsating Brake Fluid Bleeder
Original price was: US$399.00.US$209.00Current price is: US$209.00.
Key Features
- Pulsating Bleeding
- One-Person Operation
- Pressure Monitoring
- Pulsating Bleeding: High-frequency pulse pressure helps remove trapped air more effectively during brake fluid replacement.
- One-Person Operation: Eliminates the need for manual bleeding assistance, making fluid service easier for one operator.
- Pressure Monitoring: Built-in pressure monitoring helps detect abnormal pressure or air intake before service quality drops.
- 3-Year Warranty Main unit 3 years · Accessories 1 year
- 90-Day Returns Eligible returns within 90 days
- Official Store Genuine products · Direct support
AUTOOL AST603
Product Overview
The AUTOOL AST603 Brake Fluid Change Machine is a pulsating brake fluid bleeder designed for efficient brake oil replacement on vehicles. It uses pulsating oil change technology to send pulse signals at regular intervals, applying high-frequency pressure to brake fluid pipelines. This helps solve air-removal issues during brake fluid replacement, helps remove dirt and impurities attached to the inner pipe walls, saves service time, and improves workshop efficiency.
Pulse Exchange One-Person Operation 0.5-2.5Bar 1.6L/min
35WMax Power
3.5mFilling Hose
5.19kgWeight
3 YearsWarranty
Click to enlargeKey Features
Key Features
AST603 combines pulse pressure exchange, one-person operation, air-free filling, liquid-level protection, corrosion-resistant hoses, and detailed control design for efficient brake fluid replacement.
Pulse One-Button Replacement
Only one person is needed to operate the machine. After the working environment is set, the process can run automatically, making brake fluid replacement easier and less labor-intensive.
Pulsating Brake Fluid Exchange
High-frequency pulse pressure pushes new brake fluid through the brake line while helping remove old oil, dirt, and impurities attached to the pipeline inner walls.
Air-Free Filling
Before first use, bleed the device and fill the internal tube with brake fluid to reduce the risk of air entering the braking system during replacement.
Intelligent Liquid Level Monitoring
When the new fluid container runs out of brake fluid during filling, the built-in monitoring device automatically stops to help prevent air from entering the brake pipelines.
Corrosion-Resistant Oil Hoses
The hoses use special materials with strong corrosion resistance, helping maintain long-term durability against brake fluid and other chemical substances.
Detailed Control Design
Pressure gauge display, metal hose fittings, pressure adjustment knob, indicator light, aviation power plug, safety device, and screw-column quick connector improve control and usability.
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Click to enlargeHow It Works
How It Works
AST603 delivers brake fluid from the new oil container to the vehicle brake fluid reservoir at a set pressure, then the used brake fluid is drained from the wheel brake calipers in the correct sequence until fresh fluid flows out.
New Fluid Delivery
Brake fluid is pumped from the new fluid container and delivered to the vehicle brake fluid reservoir at a specified pressure.
Used Fluid Recovery
Drain the used brake fluid from each wheel brake caliper in the prescribed sequence until the new brake fluid flows out.
Pressure Protection
The built-in pressure monitoring device detects pressure levels. If pressure cannot be generated or the pump draws in air, it automatically shuts off to prevent air from entering the vehicle brake fluid reservoir.
How To Use
How To Use
Follow the correct setup, pressure-building, bleeding, and shutdown sequence. The shutdown sequence is especially important because turning off the machine before tightening the caliper screw may allow air to enter the system.
1. Bleed The Device First
Before using the device, bleed the machine first. The oil reservoir on the vehicle must be filled to the maximum level.
2. Connect The Adapter
Find a suitable adapter and connect it to the vehicle brake fluid reservoir.
3. Build Initial Pressure
Press and hold the start button for 5-6 seconds to build pressure. Once pressure reaches above 0.6 bar, release the button.
4. Adjust Working Pressure
Adjust the working pressure. The source operation guide usually recommends adjusting pressure to about 2 bar.
5. Open The Caliper Screw
After turning on the machine and adjusting pressure, loosen the wheel cylinder / brake caliper screw to start draining old brake fluid.
6. Check Old Oil Drainage
Check the layering and color of the fluid in the waste oil bottle. The darker layer is the old oil.
7. Use The Correct Shutdown Sequence
After replacement is complete, tighten the wheel cylinder / brake caliper screw first, then turn off the machine. This prevents air from entering the system.
Click to enlargeUse Notes
- During replacement, check whether the new oil bottle still contains new brake fluid.
- The device will not always stop immediately when the bottle runs out of oil; if it continues adding fluid with no new oil, air may enter the system.
- The low-oil shutdown function helps protect against completely draining oil from the vehicle, but operators should still monitor the new oil bottle.
- If you encounter an electronic power brake pump, it is recommended to use the AST603 together with a diagnostic computer.
- Contact support directly if the brake system setup, adapter selection, or operating sequence is unclear.
Specifications
AUTOOL AST603 Product Specifications
The specification image shows AC220V, while the comparison image lists 110/220V options. Select the correct power version when ordering, and confirm with AUTOOL Store if your market voltage is unclear.
| Power And Output | |
| Product | AUTOOL AST603 Pulsating Brake Fluid Bleeder |
| Power Supply | Spec image shows AC220V; comparison chart lists 110/220V options |
| Maximum Power | 35W |
| Working Pressure | 0.5-2.5Bar |
| Output Pressure | 0.7-2.5Bar |
| Output Flow Rate | 1.6L/min |
| Filling Hose Length | 3.5m |
| Operation And Design | |
| Brake Caliper Support | Single-wheel oil change |
| Low Oil Protection | Supported |
| Pressure Gauge | Supported |
| Working Pressure Adjustment | Supported |
| Power Aviation Plug | Supported |
| Compatible Connectors | 1 type by default |
| Oil Bottle | 1L used oil bottle |
| Temperature And Weight | |
| Operating Temperature | -10°C to 60°C |
| Storage Temperature | -10°C to 65°C |
| Product Weight | 5.19kg / comparison chart approx. 5.2kg |
| Warranty | 3-year warranty for eligible non-human damage cases and lifetime maintenance support |
Click to enlargePower And Output
ProductAUTOOL AST603 Pulsating Brake Fluid Bleeder
Power SupplySpec image shows AC220V; comparison chart lists 110/220V options
Maximum Power35W
Working Pressure0.5-2.5Bar
Output Flow Rate1.6L/min
Filling Hose Length3.5m
Operation And Design
Brake Caliper SupportSingle-wheel oil change
Low Oil ProtectionSupported
Pressure GaugeSupported
Compatible Connectors1 type by default
Oil Bottle1L used oil bottle
Temperature And Weight
Operating Temperature-10°C to 60°C
Storage Temperature-10°C to 65°C
Product Weight5.19kg / comparison chart approx. 5.2kg
Warranty3-year warranty and lifetime maintenance support
Compatibility And Fitment
Compatibility And Fitment
AST603 includes one compatible connector by default. It is suitable for many common vehicle brands, and the optional 17-piece adapter set can expand compatibility for workshop use.
Default Vehicle Coverage
The AST603 compatibility image lists Benz, BMW, Audi, Skoda, Fiat, Lexus, Land Rover, Jaguar, Porsche, Buick, Ford, Chevrolet, Volvo, Citroen, Volkswagen, Peugeot, Renault, and more.
When To Buy The Adapter Set
If the default adapter does not fit your target vehicle, or your workshop services many different brands, purchase the 17-piece brake fluid changer adapter set.
AST605 / AST609 Upgrade
AST605 includes two more compatible connectors than AST603, while AST609 provides seven compatible connectors for broader model coverage.
AST612 / AST618 Upgrade
AST612 provides nine adapters, and AST618 includes seventeen adapters, making the higher models better for workshops needing wide vehicle compatibility.
Click to enlargeProduct Comparison
Product Comparison
Compare AST603, AST605, AST609, AST612, and AST618 before choosing the right brake fluid bleeder for adapter coverage, oil bottle capacity, two-wheel or four-wheel service, power supply, mobility, and workshop efficiency.
AST603 FocusEntry pulsating brake fluid bleeder with 1 compatible connector, 1L used oil bottle, single-wheel oil change, 0.5-2.5bar working pressure, and approx. 5.2kg weight
AST605 FocusIncludes two more compatible connectors than AST603, while other core parameters remain similar
AST609 FocusIncludes seven compatible connectors, one 1.5L used oil bottle, and one 1L new oil bottle for greater convenience and broader vehicle coverage
AST612 FocusDC12V model with two 1.5L used oil bottles, one 1L new oil bottle, nine adapters, 30-second pressure relief, 2.6L/min flow, and two-wheel simultaneous oil change
AST618 FocusFour-wheel simultaneous brake fluid replacement, seventeen adapters, four 1.5L used oil bottles, stainless steel oil bottle, pulse mode settings, working time settings, 360° wheels, and three-section handle
Click to enlargeRelated Products
Related Products
Compare related AUTOOL brake fluid exchanger models and adapter accessories before choosing the right connector coverage, oil bottle capacity, and wheel-service efficiency.
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Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL AST605 Car Pulsating Brake Fluid Exchanger
From US$239.00 -
Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL AST609 Car Pulsating Brake Fluid Change Kit
From US$259.00 -
Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL AST612 Pulsating Brake Fluid Bleeder
From US$349.00 -
Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL AST618 Pulsating Brake Fluid Exchanger Four-Wheel Oil Change
From US$899.00 -
Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL 17-Piece Brake Fluid changer Adapters
From US$90.00
Manual And Downloads
Manual And Downloads
Download the AST603 manual for setup, operation, safety notes, adapter connection, pressure setup, and troubleshooting guidance.
Click to enlargeAUTOOL AST603 EN Manual
Open the PDF manual before using the brake fluid bleeder, especially for first-use bleeding, pressure setup, and safety instructions.
Download ManualNeed Setup Confirmation?
Contact AUTOOL Store before ordering if you need to confirm voltage version, adapter compatibility, electronic power brake pump use, or the correct operation sequence.
Click to enlargeWhat Is In The Box
What Is In The Box
The Packing List section uses only the most relevant package image. The specification image is placed in Specs, while this image shows the actual AST603 package contents.
Main UnitAUTOOL AST603 Brake Fluid Bleeder
Power CableAviation power plug cable shown in the package image
Fluid LineFilling hose / fluid line shown in the package image
BottleUsed oil bottle
AdapterDefault compatible adapter
ManualUser manual included
Before You Order And Use
Before You Order And Use
Brake fluid is toxic and incorrect operation may cause health hazards, property damage, or air entering the brake system. Review these notes carefully before use.
Safety And Operation Notes
- Improper use may lead to health hazards or property damage.
- Brake fluid is toxic and may cause severe health damage.
- Avoid direct contact with brake fluid.
- Wear safety goggles to reduce injury risk from splashing liquids.
- Wear appropriate protective gloves to reduce the risk of skin damage.
- If brake fluid contacts skin, wash immediately with water.
- Remove contaminated clothing immediately.
- Do not carry cloths or other items soaked with brake fluid in your clothing.
- Disconnect the power plug before performing any work on the brake fluid bleeder.
- Only plug the power plug into the socket when the brake fluid bleeder is disconnected from power.
- Do not make structural changes to the brake fluid bleeder.
- Inspect the brake fluid bleeder carefully before each use.
- If abnormalities are found, do not continue using the machine.
- Have the machine repaired by a professional; do not attempt to open the machine yourself.
- Do not wet the brake fluid bleeder, and do not operate the machine in a damp environment.
- During use, confirm that the new oil bottle still contains brake fluid.
- Correct shutdown sequence: tighten the brake caliper screw first, then turn off the machine.
Questions And Answers
These answers cover one-person operation, pressure setup, first-use bleeding, old-fluid confirmation, shutdown sequence, oil bottle monitoring, electronic power brake pumps, AST603 / AST605 differences, and adapter selection.
No. AST603 supports one-person operation and does not require repeated manual brake pedal pressing during normal brake fluid replacement.
The operation guide recommends building pressure above 0.6 bar first, then usually adjusting the working pressure to about 2 bar. The AST603 working pressure range is 0.5-2.5 bar.
The device must be bled before first use so the internal machine tubing is filled with brake fluid. This helps prevent air from entering the braking system during fluid replacement.
Check the layering and color of the fluid in the waste oil bottle. The darker layer is usually the old brake fluid.
After completing the brake fluid replacement, tighten the wheel cylinder / brake caliper screw first, then turn off the machine. This sequence is important because turning off the machine first may allow air to enter the system.
Monitor the new oil bottle during operation. If the bottle runs out but the machine continues adding fluid, air may enter the system. The low-oil shutdown function helps, but operators should still check the new oil level during the process.
When working with an electronic power brake pump, it is recommended to use the AST603 together with a diagnostic computer.
AST605 includes two more compatible connectors than AST603, while the other core parameters remain similar.
Buy the 17-piece brake fluid changer adapter set if the default AST603 adapter does not fit your target vehicle, or if your workshop needs broader compatibility for more vehicle brands.
Related Guides
Related Guides
Use these related articles to learn more about pulsating brake fluid exchangers, brake system maintenance, and AST series model upgrades.
Pulsating Brake Fluid Exchanger Review
Learn more about pulsating brake fluid exchanger use cases and service value.
Five brake System maintenance tips! 90% of drivers ignore it!
Review practical brake system maintenance tips before planning brake fluid service.
AST612 brake fluid exchanger Details: New Features Advantages and Old Model-by-Model Review
Compare AST612 and related AST series upgrades when considering higher-capacity brake fluid service tools.
A Professional Guide to Brake Fluid Changes by System Type
Understand how different brake system types affect brake fluid change methods and service planning.
Warranty And Contact
Warranty And Contact
For AST603 setup, voltage version confirmation, adapter compatibility, operation sequence, electronic power brake pump use, warranty, replacement parts, or lifetime maintenance support, contact AUTOOL Store directly.
Pre-Sales And Product Support
Use support if you need help confirming whether AST603 fits your vehicle, selecting the correct adapter, checking power version, confirming the correct brake caliper shutdown sequence, or troubleshooting electronic power brake pump service.
- AST603 setup and operation support
- Voltage version and adapter compatibility confirmation
- Electronic power brake pump service guidance
- Correct shutdown sequence confirmation
- 3-year warranty for eligible non-human damage cases
- Lifetime maintenance support and replacement parts assistance
Customer Reviews
Leave A Review
Vakgarage Webrovi ✓ Verified Purchase –
Good quality
I have used tools from many brands, but AUTOOL tools are the best. AST603 did not disappoint me.
anthony r moreno ✓ Verified Purchase –
Great product BUY NOW
you won’t be disappointed!!!
Bcboozer ✓ Verified Purchase –
Works great
I was kinda worried about the performance and any leaking issues but it works great less than 5 minutes once you get ready, and you are done.