AUTOOL AST603 Pulsating Brake Fluid Bleeder

AUTOOL AST603Product OverviewThe 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/min35WMax Power3.5mFilling Hose5.19kgWeight3 YearsWarranty Click to enlargeKey FeaturesKey FeaturesAST603 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 ReplacementOnly 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 ExchangeHigh-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 FillingBefore 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 MonitoringWhen 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 HosesThe hoses use special materials with strong corrosion resistance, helping maintain long-term durability against brake fluid and other chemical substances.Detailed Control DesignPressure gauge display, metal hose fittings, pressure adjustment knob, indicator light, aviation power plug, safety device, and screw-column quick connector improve control and usability. Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlargeHow It WorksHow It WorksAST603 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 DeliveryBrake fluid is pumped from the new fluid container and delivered to the vehicle brake fluid reservoir at a specified pressure.Used Fluid RecoveryDrain the used brake fluid from each wheel brake caliper in the prescribed sequence until the new brake fluid flows out.Pressure ProtectionThe 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 UseHow To UseFollow 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 FirstBefore using the device, bleed the machine first. The oil reservoir on the vehicle must be filled to the maximum level.2. Connect The AdapterFind a suitable adapter and connect it to the vehicle brake fluid reservoir.3. Build Initial PressurePress 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 PressureAdjust the working pressure. The source operation guide usually recommends adjusting pressure to about 2 bar.5. Open The Caliper ScrewAfter turning on the machine and adjusting pressure, loosen the wheel cylinder / brake caliper screw to start draining old brake fluid.6. Check Old Oil DrainageCheck the layering and color of the fluid in the waste oil bottle. The darker layer is the old oil.7. Use The Correct Shutdown SequenceAfter 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 NotesDuring 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.SpecificationsAUTOOL AST603 Product SpecificationsThe 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 OutputProductAUTOOL AST603 Pulsating Brake Fluid BleederPower SupplySpec image shows AC220V; comparison chart lists 110/220V optionsMaximum Power35WWorking Pressure0.5-2.5BarOutput Pressure0.7-2.5BarOutput Flow Rate1.6L/minFilling Hose Length3.5mOperation And DesignBrake Caliper SupportSingle-wheel oil changeLow Oil ProtectionSupportedPressure GaugeSupportedWorking Pressure AdjustmentSupportedPower Aviation PlugSupportedCompatible Connectors1 type by defaultOil Bottle1L used oil bottleTemperature And WeightOperating Temperature-10°C to 60°CStorage Temperature-10°C to 65°CProduct Weight5.19kg / comparison chart approx. 5.2kgWarranty3-year warranty for eligible non-human damage cases and lifetime maintenance support Click to enlarge Power And OutputProductAUTOOL AST603 Pulsating Brake Fluid BleederPower SupplySpec image shows AC220V; comparison chart lists 110/220V optionsMaximum Power35WWorking Pressure0.5-2.5BarOutput Flow Rate1.6L/minFilling Hose Length3.5m Operation And DesignBrake Caliper SupportSingle-wheel oil changeLow Oil ProtectionSupportedPressure GaugeSupportedCompatible Connectors1 type by defaultOil Bottle1L used oil bottle Temperature And WeightOperating Temperature-10°C to 60°CStorage Temperature-10°C to 65°CProduct Weight5.19kg / comparison chart approx. 5.2kgWarranty3-year warranty and lifetime maintenance support Compatibility And FitmentCompatibility And FitmentAST603 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 CoverageThe 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 SetIf 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 UpgradeAST605 includes two more compatible connectors than AST603, while AST609 provides seven compatible connectors for broader model coverage.AST612 / AST618 UpgradeAST612 provides nine adapters, and AST618 includes seventeen adapters, making the higher models better for workshops needing wide vehicle compatibility. Click to enlargeProduct ComparisonProduct ComparisonCompare 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 weightAST605 FocusIncludes two more compatible connectors than AST603, while other core parameters remain similarAST609 FocusIncludes seven compatible connectors, one 1.5L used oil bottle, and one 1L new oil bottle for greater convenience and broader vehicle coverageAST612 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 changeAST618 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 ProductsRelated ProductsCompare related AUTOOL brake fluid exchanger models and adapter accessories before choosing the right connector coverage, oil bottle capacity, and wheel-service efficiency.Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Pulsating Brake Fluid ExchangerAUTOOL AST605 Car Pulsating Brake Fluid ExchangerRated 0 out of 5(0) From US$239.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Pulsating Brake Fluid ExchangerAUTOOL AST609 Car Pulsating Brake Fluid Change KitRated 0 out of 5(0) From US$259.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Pulsating Brake Fluid ExchangerAUTOOL AST612 Pulsating Brake Fluid BleederRated 0 out of 5(0) From US$349.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Pulsating Brake Fluid ExchangerAUTOOL AST618 Pulsating Brake Fluid Exchanger Four-Wheel Oil ChangeRated 0 out of 5(0) From US$899.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Pulsating Brake Fluid ExchangerAUTOOL 17-Piece Brake Fluid changer AdaptersRated 0 out of 5(0) From US$90.00 Select options This product has multiple variants. The options may be chosen on the product page Manual And DownloadsManual And DownloadsDownload the AST603 manual for setup, operation, safety notes, adapter connection, pressure setup, and troubleshooting guidance. Click to enlargeAUTOOL AST603 EN ManualOpen 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.Email[email protected] WhatsApp 86 189 2647 7404 Click to enlargeWhat Is In The BoxWhat Is In The BoxThe 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 BleederPower CableAviation power plug cable shown in the package imageFluid LineFilling hose / fluid line shown in the package imageBottleUsed oil bottleAdapterDefault compatible adapterManualUser manual includedBefore You Order And UseBefore You Order And UseBrake 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 NotesImproper 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 AnswersThese 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. Does AST603 Need Manual Brake Pedal Pressing? No. AST603 supports one-person operation and does not require repeated manual brake pedal pressing during normal brake fluid replacement. What Pressure Should I Use? 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. Why Must The Device Be Bled Before First Use? 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. How Do I Know The Old Brake Fluid Has Been Drained? Check the layering and color of the fluid in the waste oil bottle. The darker layer is usually the old brake fluid. What Is The Correct Shutdown Sequence? 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. What If The New Oil Bottle Runs Out During Operation? 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. Can AST603 Work With Electronic Power Brake Pumps? When working with an electronic power brake pump, it is recommended to use the AST603 together with a diagnostic computer. What Is The Difference Between AST603 And AST605? AST605 includes two more compatible connectors than AST603, while the other core parameters remain similar. When Should I Buy The 17-Piece Adapter Set? 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 GuidesRelated GuidesUse these related articles to learn more about pulsating brake fluid exchangers, brake system maintenance, and AST series model upgrades. Guide / 2024-11-25Pulsating Brake Fluid Exchanger ReviewLearn more about pulsating brake fluid exchanger use cases and service value. Guide Guide / 2024-11-12Five brake System maintenance tips! 90% of drivers ignore it!Review practical brake system maintenance tips before planning brake fluid service. Guide / 2024-07-10AST612 brake fluid exchanger Details: New Features Advantages and Old Model-by-Model ReviewCompare AST612 and related AST series upgrades when considering higher-capacity brake fluid service tools. Guide / 2025-07-04A Professional Guide to Brake Fluid Changes by System TypeUnderstand how different brake system types affect brake fluid change methods and service planning.Warranty And ContactWarranty And ContactFor 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 SupportUse 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 supportVoltage version and adapter compatibility confirmationElectronic power brake pump service guidanceCorrect shutdown sequence confirmation3-year warranty for eligible non-human damage casesLifetime maintenance support and replacement parts assistanceEmail Support[email protected] WhatsApp Support 86 189 2647 7404