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40
LAUNCH Professional 919E User Manual
driving conditions and weather events.
It needs to be performed in the following cases:
1. If the service lamp is on, run car diagnostics rst for troubleshooting. After
that, reset the driving mileage or driving time, so as to turn o the service
lamp and enable a new driving cycle.
2. If the service lamp is not on, but you have changed the engine oil or electric
appliances that monitor oil life, you need to reset the service lamp.
5.2 Electronic Parking Brake Reset
This function enables you to reset the brake pad after replacing the brake pad.
It needs to be performed in the following cases:
1. The brake pad and brake pad wear sensor are replaced.
2. The brake pad indicator lamp is on.
3. The brake pad sensor circuit is short, which is recovered.
4. The servo motor is replaced.
5.3 Steering Angle Calibration
This function enables you to reset the steering angle, after replacing the
steering angle position sensor, replacing steering mechanical parts (such as
steering gearbox, steering column, end tie rod, steering knuckle), performing
four-wheel alignment, or recovering car body.
To reset the steering angle, first find the relative zero point position for the
car to drive in straight line. Taking this position as reference, the ECU can
calculate the accurate angle for left and right steering.
5.4 ABS Bleeding
This function allows you to perform various bi-directional tests to check the
operating conditions of Anti-lock Braking System (ABS).
It needs to be performed in the following cases:
1. When the ABS contains air.
2. When the ABS computer, ABS pump, brake master cylinder, brake cylinder,
brake line, or brake uid is replaced.
5.5 Gear Learning
This function enables you to perform tooth learning for the car, to turn o the
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