User Guide
LAUNCH   X-431 V User Manual — Vehicle Diagnosis 
24 
ABS Bleeding
This function allows you to perform various bi-directional tests to check the 
operating conditions of Anti-lock Braking System (ABS). 
1. When the ABS contains air, the ABS bleeding function must be performed to 
bleed the brake system to restore ABS brake sensitivity. 
2. If the ABS computer, ABS pump, brake master cylinder, brake cylinder, brake 
line, or brake fluid is replaced, the ABS bleeding function must be performed 
to bleed the ABS. 
Tire Pressure Monitor System Reset
1. After the tire pressure MIL turns on and maintenance is performed, the tire 
pressure resetting function must be performed to reset tire pressure and turn 
off the tire pressure MIL. 
2. Tire pressure resetting must be performed after maintenance is performed in 
the following cases: tire pressure is too low, tire leaks, tire pressure 
monitoring device is replaced or installed, tire is replaced, tire pressure sensor 
is damaged, and tire is replaced for the car with tire pressure monitoring 
function. 
Diesel Particulate Filter (DPF) Regeneration
DPF regeneration is used to clear PM (Particulate Matter) from the DPF filter 
through continuous combustion oxidation mode (such as high temperature 
heating combustion, fuel additive or catalyst reduce PM ignition combustion) to 
stabilize the filter performance. 
DPF regeneration may be performed in the following cases: 
a) The exhaust back pressure sensor is replaced. 
b) The PM trap is removed or replaced. 
c) The fuel additive nozzle is removed or replaced. 
d) The catalytic oxidizer is removed or replaced. 
e) The DPF regeneration MIL is on and maintenance is performed. 
f) The DPF regeneration control module is replaced. 
4.6 Repair Data 
This option provides abundant repair case and automotive technology handbook 
for your reference. 
Tap “Data”, and then follow the on-screen instructions to proceed. 
4.7 Profile 
This function allows users to manage your personal information.   










