How to set the pressure of Audi original air pump?

1. Observe the value of the automobile air pump. Look at the unit first. If it is a bus, call 2.4, PSI, 35-40, KPA, and call 240-280. There is an m key to set the default value, which will stop when it reaches the default value.

2. There is a small hole in the red button of the air pump control box. Use a screwdriver to adjust the screws inside and adjust the air pressure of the air pump.