It will take a few hours. The glass replacement is quick but they have to re calibrate the vehicle after the replacement.
it doesn't really matter what type of vehicle you drive but if you are in a Lexus chances are you have either a backup camera or other electronics that attach to the windshield that have to be calibrated. I dropped my car off at 9:30 in the morning with all of those electronic challenges and they had the car ready by 1:30.
It will take no more than 2 hours. You can wait or drop off.
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