2015 Nissan versa My mechanic has determined that the driver side airbag module need to be replaced

Yes, we can help with resetting the airbag computer module, that stores history of the accident. Also, check your seat belts, they are most likely locked and need to be replaced or repaired. We can rebuild your seat belts as well. For the side airbag module, you will need to replace it. Try car-parts.com for airbag replacement. For airbag control computer module there is only one in your vehicle and in all vehicles. This airbag control module stores crash data/crash history of the accident. Instead of replacing your airbag control module you can send it to MyAirbags.com and it can be reset, this will save you hundreds and in some cases thousands. The best part about having your original airbag control module reset is that it will NOT need additional programming at the dealership, as compared to a new or used airbag control module. So when you get it back from MyAirbags.com then it will be just plug-n-play! Here is a link for airbag control module reset
https://www.myairbags.com/product/airbag-module-reset-3/ Here is a link for seat belt pretensioner repair
https://www.myairbags.com/product/seat-belt-repair-1-stage/