My name is Mike Neal and I have a quick question with a link to a video so everyone can hear what I am talking about. I have a 2008 automatic Mercedes C300 4Matic it has 165k on it. I have a Creaking noise when I brake. Primarily when I am going slow and coming to a stop. there is no pulsing in the brakes. New rotors and new brake pads and new slide pins that were recommended by the Mercedes dealer here in town. The noise was there before the new rotors and new pads and the noise is still there. Here is the link to the video. Thank you to everyone that helps. Love your work Scotty.
Determine if the noise is coming from the back or front. Then replace both calipers.
At 16 years, a brake job should include rotors, disks, and calipers
The noise is coming from the front. Did you watch the video?
Thank you for helping by the way.
try doing a tire rotation.
Otherwise I would suspect bearing/hub assembly or CV axle.
I like that suggestion. I will try that tomorrow. Thank you for the idea. The CV axles and struts have already been ruled out.
all 4 tires rotated and ......... still there . I do hear what appears to be a wheel bearing noise like when you turn from side to side but mine is when it is not being turned.
so the noise still comes from the same corner , and didn't move right.
wheel bearings make noise whether you turn or not.
https://www.youtube.com/watch?v=wbsUTESwOMY
I watched that video a few days back but I was trying to find just one video online anywhere that had the sound that my car is making. I have already replaced rotors, brakes, slide pins, shims and had the struts and cv axles checked out. I have also had the outer tie rod ends replaced. I think I should probably just go ahead and replace the bearings. Would it be easier to replace the wheel hub assembly or just the bearings? I have heard that you have to disconnect a lot of things on my Mercedes just to get to the bearing. Not as simple as this video. What are your thoughts? MountainManJoe. Thank you.
Me, I don't like to replace things that aren't broken. I would jack up the car and test them as Scotty shows.
I don't know if the bearings are sold individually or as a hub assembly for your vehicle, nor what is involved in replacing them. I have never owned a Mercedes of any kind.
You may be able to find a service manual here: https://charm.li/
The sound is obviously related to rotation, which rules out tie rods. Brakes could have been ruled out by simply removing the caliper. Shotgunning parts at a problem just leaves you poor.
If you have unlimited funds to throw at this problem, then why not give it a to a mechanic to fix.
This is funny i noticed that the noise 100% only happens when i press on the brakes when coming to a stop. There is the sort of wheel bearing hum. It is very very faint but i noticed that the noise tends to quiet about 80% when it has rained. So my 10 yr old daughter suggested that i spray a few squirts of water on the rotor. ........ noise goes away...... is it the new brakes or the new rotors lol now that is the question.
could be. But you still haven't ruled out bearings, which make the brake rotor wobble. All you have to do is jack up the car it's not hard.
Sorry I have not mentioned before but it has been jacked up by a certified Mercedes mechanic and he has ruled out the bearings, and all cv axles and struts. there is no wobble or play in the side to side or up and down motion. This is a situation that has been going on for over a year. I do not have a pile of gold at home just waiting to throw at the car. The mechanic I speak of works at a major dealership and he has a personal garage where he does side work. At any given time he probably has about 10 - 20 cars parked out around his garage. his garage has 4 lifts in it and he has been a higher end mechanic for about 18 years. dealing with Audi, Bmw, Mercedes, Infiniti, Lexus blah blah blah. I have had it out at his garage a few times for things like a new oil seperator. My rear Sam module will probably be replaced by him soon as it is acting up. Im kind of frustrated because this is about the third forumn that i have posed this question on and the solution never gets resolved. I am not sure why he has not been able to figure it out but he is a very busy guy.
he's not that good if he can't figure this out. Consider going elsewhere.
Again, try removing the caliper to rule out brakes.
by removing the caliper do you mean replace it with a new one? I need the caliper to help stop the vehicle. I am not sure at what step you want me to remove the caliper? Do you mean jack it up and remove the caliper and then put the wheel back on and try to wiggle the tire from side to side?
I think you just need a better mechanic who is actually going to actually make sure the problem is fixed. If he has 20 cars out front then his attention is probably too divided.
I agree that is why I came to online forums in hopes that someone would watch my video and say " Hey my car did that EXACT same thing " and this is what the problem was. I do not have another car to drive while mine is in the shop. So I was hoping i could diagnose it and get the parts and then have them replaced as fast as possible. I will upload another video that I took last night. Maybe it will help you in guessing what is causing this. I held the brake and was driving at my work so that you can hear the prolonged noise repetitively in other words it is a noise that in my opinion is circular in nature. but is not there in reverse whatsoever. Thank you again for everything.
https://youtu.be/kX5TvRBUvV0?si=dRKHCzpoUAmnkd1w
you could be waiting a very long time for someone to have the exact same problem with the exact same cause. I could hear the noise fine in the first video but that's not enough to diagnose the problem. Someone experienced needs to look at your car.