As annoying as that sound can be while on the road, it’s intended to grab the attention of distracted or fatigued drivers. Between cyclists, bikers, and other drivers, we can only imagine how many lives rumble strips have saved!
Just shake the car seat somewhat vigorously at the belt path, and then pull out your measuring tape to check measure for any movements. Should you find that the car seat is too loose, we recommend taking it to your local fire station to have it properly and safely reinstalled.