Airbag reset or erase warning light

The passenger side airbag mat faulted, due to repair cost ($2,100.00) I decided to use a bypass. Once correctly installed, the alert airbag light on the top inside roof panel (above windshield) went off but the airbag warning lights on the center speedometer and the digital meter on the steering wheel remained on. I would like to know how to reset or erase said lights. Is there a diagnostic scanner tool you could suggest to use (inexpensive one)?

Thank you,

Tony