Notices
Mercedes Tech Talk Discuss general technical questions and issues about your Mercedes-Benz. Moderated by a certified MB Tech.
Sponsored by:
Sponsored by:

Help, loud passenger noise 09 c300 AWD

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Nov 21, 2014 | 04:01 PM
  #1  
Synolimit's Avatar
Thread Starter
Junior Member
 
Joined: Sep 2014
Posts: 33
Likes: 3
09 C300 Sport
Help, loud passenger noise 09 c300 AWD

wifes 09 c300 AWD started making a noise in the front passenger area. the noise is now loud! and gets louder as you go faster. its a constant noise but not a grind or metal sound. i was 100% sure it was a wheel bearing as again its not a grind and its something spinning 360 degrees with no flat spots like a warped rotor would have. also at the rate its spinning its very fast! a wheel or rotor would spin slower since it has a larger diameter. this noise spins fast like a bearing or axle or something.

yesterday i pulled everything off and the bearing did feel "tight." i popped the old one out and it looked fine. well i bought a new one from the dealer and installed and it didnt feel any different in my hands. i put everything back together and went for a drive and everything is 100% the same!!

now im thinking a bearing in the front transfer case maybe?? i really dont know at this point and it sucks!! also after i installed everything i now have no ABS, traction control, and a check brake pad wear light. i did have the radio on when working on it so unplugging everything with the power on im sure it thinks all that stuff is broken. so i need to do a full master reset or something as its all plugged back in and working ok.

anyone???
Reply
Old Nov 24, 2014 | 01:32 PM
  #2  
Synolimit's Avatar
Thread Starter
Junior Member
 
Joined: Sep 2014
Posts: 33
Likes: 3
09 C300 Sport
Hello?
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 06:53 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE