My tire pressure warning on the dash board is on I already adjusted the tire pressure with the help of the guy form the service dept at our local auto shop but the light warning is still on how can?

Just had the same problem with my 2006 Toyota Corolla. With my specific Toyota, I turned the key to ACC and held the Low Tire Pressure button in until the lamp on the dashboard lit three times. Then, I turned the key off and repeated the procedure. This evidently works (we'll see). With other Toyotas, there is a Tire Pressure Sensor reset button underneath the dashboard directly below the steering column. You follow the same procedure as described above, making sure to repeat the procedure a second time. Hope this helps.