Clean Water Drain In Wheel Carrier - AR35.20-P-0115-03CW
WARNING: This page is about a different car, the 2023 Mercedes-Benz GLC300, 2022 Mercedes-Benz GLC300, 2021 Mercedes-Benz GLC300, 2020 Mercedes-Benz GLC350e, and 2020 Mercedes-Benz GLC300. However, it is still accessible from the selected car via links, so may be relevant.
Model 172, 204, 205, 207, 211, 212, 213, 216, 217, 218, 219, 221, 222, 230, 231, 253, 293
Due to dirt deposits in the groove (arrow), water that has penetrated between the steering knuckle and wheel bearing cannot flow away.
As a result damage to the wheel bearing can occur.