Here are a few things that could be causing the issue:
* Loose or damaged wiring: The wiring for the steering wheel controls may have been damaged during the airbag recall work. This could cause the controls to not function properly or to intermittently malfunction.
* Faulty airbag module: The airbag module itself may be faulty, which could cause the steering wheel controls to not work properly.
* Incorrectly installed airbag: If the airbag was not installed correctly, it could be interfering with the steering wheel controls.
It is important to have the issue diagnosed and repaired by a qualified technician. Driving with malfunctioning steering wheel controls can be dangerous, as they can prevent you from being able to control your vehicle properly.