ADAS systems are very sophisticated technologies, and each OEM provides the exact specifications for calibrating their vehicles. Repair shops have the responsibility to ensure that each calibration is performed properly, so that customers can leave with a safe, functional vehicle.
And properly means exactly right. Close enough is not close enough, because a calibration even a fraction of a degree off can be the difference between the system’s success and failure.
When you sublet ADAS work to another shop, you give up control over the quality of the work but keep the responsibility. You give up nearly all the profit but retain all the liability.
Should something go wrong, your customer will look to you, and not the shop that didn’t meet the standard.
That’s why it’s best to keep your work in your shop.