My 2020 GLC300 ( with RFTs) does not have this problem. But I will take a guess on the cause of your problem. I don't think it is the RFTs as somebody else had suggested. I say this because when I had RFT issues on a BMW I previously owned they always pulsated at low speed. No change when turning. I think your issue may be related to something electronic related to steering. If I am correct, and I could be wrong, the power steering is electric. Also, some of the GLC300s have functionality that senses when the car drifts over lane markers (e.g., yellow or white lines on the road). So, your pulsation may be caused by either the power steering or the lane marker sensor. As I said, I am just guessing. Please feel free to reply to my ideas.Hi,
Just purchased a new glc 300. I am having a intermittent steering wobble.
When I negotiate a bend n turn the steering left to follow the bend the steering wobbles n stops when I am going straight. It last a couple of seconds. No issue when I turn steering right. I have also felt vibrations when seating on the passenger side.Brought car to Westpoint n the service guy took the car for a ride n nothing happened. I experience this issue at least 2 or 3 times a week. Any advice on what to do considering this is intermittent.