Mercedes-Benz W164 wheel bearing fault
MLML 320
Mercedes-Benz W164 hums or vibrates while driving, could it be a wheel bearing?
Yes. A high-pitched hum or vibration at highway speed is a typical wheel bearing symptom. A bearing can also fail without giving any sign while driving, and the noise can start right when pulling away.
The hum gets louder when I turn the steering wheel. Is it a wheel bearing or the differential?
A hum that gets louder when turning the steering wheel can come from a wheel bearing rather than the front differential. The fault is easy to misread by sound, so have the bearings checked at a workshop before making expensive decisions.
How is a Mercedes-Benz W164 wheel bearing replaced?
The bearing is replaced from the hub, and the hub's magnetic ring is pressed into place with a press. The job needs suitable tools, so for most people it is easiest to have it done at a workshop. The job takes about two hours.
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