You fit a new ABS pump, replace a brake line or swap a master cylinder, bleed the brakes the old way, and the pedal still feels soft. On many modern cars and bakkies, air can stay trapped inside the ABS hydraulic unit, where pedal pumping or a pressure bleeder alone may not reach it. The fix is an ABS bleed run with a scan tool, which commands the ABS valves and pump so the fluid moves through the unit. For workshops in South Africa and across Africa that do brake work every day, that procedure belongs on your own tool, not on a trip to the dealer.
Launch Dealer SA is based in Midrand, South Africa, and supplies LAUNCH diagnostic tools to workshops across Africa.
What an ABS bleed with a scan tool does
The ABS hydraulic unit has its own valves and a pump. During normal braking those valves stay in their resting position, so fluid in some internal passages hardly moves. In a scan-tool ABS bleed, the tool tells the ABS module to cycle the valves and run the pump in a set sequence while you open and close the bleed nipples, so trapped air can be pushed out. The exact sequence comes from the vehicle manufacturer and is shown step by step on the tool.
Jobs where workshops commonly reach for an ABS bleed:
- Replacing the ABS pump or hydraulic modulator.
- Replacing the brake master cylinder.
- Replacing brake lines or hoses where air may have entered the system.
- A spongy pedal after a brake fluid change that a normal bleed did not fix.
- Letting the brake fluid reservoir run dry during a job.
Whether a particular car needs a scan-tool bleed, and how the procedure runs, depends on the make, model and year. Check your vehicle list before you buy.
Before you bleed: read the ABS codes first
A soft pedal or an ABS light is not always air. A faulty wheel speed sensor, wiring or a worn part can give similar complaints. Read the ABS codes and look at live data first, such as wheel speed readings while the car is moving. Our fault codes guide and live data guide cover those first steps.
Professional tablets that list ABS bleeding
The X431 PRO3 APEX, the X431 PROS Elite and the X431 V+ 5.0 PRO3 all list ABS Bleeding among their service functions on their product pages, alongside Electronic Parking Brake Reset, Steering Angle Calibration, Battery Registration, Injector Coding, DPF Regeneration and Throttle Adaptation. They also offer full-system diagnostics and bi-directional tests on supported vehicles, which helps you check the ABS module and its components before you replace parts. Read which LAUNCH tools let you command components.
Brake jobs often come in pairs. A workshop that bleeds an ABS unit on Monday is fitting rear pads to a car with an electronic parking brake on Tuesday, and resetting the steering angle after suspension work on Wednesday. A tablet keeps all of those on one tool. See our EPB and brake reset guide and steering angle reset guide.
What the entry handhelds do and do not list
The CRP129X Plus V3 scans all systems, including ABS, reads and clears codes and shows live data. Its product page lists eight reset functions, including Brake Reset and SAS Reset, but it does not list ABS bleeding. It is a good tool for finding ABS faults and doing pad resets, but not the pick when ABS bleeds are part of your work.
The CRP123X Plus reads and clears codes in the engine, transmission, ABS and airbag systems. It does not list ABS bleeding either.
Trucks and cars in one bay
The X431 HD and the X431 V PRO3S with HD III list ABS Bleeding among their supported service procedures, with Oil Service Reset, Steering Angle Calibration, DPF Regeneration and Electronic Parking Brake. Coverage on heavy vehicles depends on the make, model and the brake system fitted, so confirm your vehicle list first. See our fleet diagnostics guide.
Which tool for ABS bleeding?
| Your workshop | Start with |
|---|---|
| Brake and general workshop doing ABS units, master cylinders and lines | X431 PRO3 APEX |
| Busy bay doing ABS, EPB, steering angle and coding work | X431 PROS Elite or X431 V+ 5.0 PRO3 |
| Trucks, or cars and trucks in the same workshop | X431 HD or X431 V PRO3S with HD III |
| Finding ABS faults and pad resets, no ABS bleeding | CRP129X Plus V3 |
| ABS code reading only | CRP123X Plus |
Function availability depends on the exact vehicle. Software updates are sold for your sales territory, so buy from a dealer who supplies yours. Read how LAUNCH software updates work.
See it working before you buy
Visit our showroom at Shop AG008, Midrand Motor City, to see an ABS bleed menu on a demo unit. Can't get to Midrand? Book a WhatsApp video demo. Then get the X431 PRO3 APEX, the X431 PROS Elite or, for trucks, the X431 HD.
Questions we get asked
When does a car need an ABS bleed with a scan tool?
On many modern cars, after replacing the ABS pump or modulator, the master cylinder or brake lines, or when a normal bleed leaves a soft pedal. Whether a car needs it depends on the make, model and year.
Which LAUNCH tools list ABS bleeding?
The X431 PRO3 APEX, X431 PROS Elite and X431 V+ 5.0 PRO3 product pages list ABS Bleeding. For trucks, the X431 HD and X431 V PRO3S with HD III also list it.
Does the CRP129X Plus V3 do ABS bleeding?
Its product page does not list ABS bleeding. It scans all systems including ABS and lists Brake Reset and SAS Reset among its eight reset functions.
Will an ABS bleed fix an ABS warning light?
Only if trapped air is the cause. Read the ABS codes and check live data first, because a wheel speed sensor or wiring fault can cause the light.
Can I see an ABS bleed demo if I'm not near Midrand?
Yes. Book a WhatsApp video demo from our booking page, or visit our showroom at Shop AG008, Midrand Motor City.
