motor ticking noise? beeping sound from front end??

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Sep 22, 2015 | 02:18 PM
  #1  
acaruso8's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2015
Posts: 23
Likes: 0
2012 C350 Coupe 4matic
motor ticking noise? beeping sound from front end??

Hello--I recently purchased a 2012 c350 coupe 4matic certified from a well known dealership. Ive only had it for 45 days but I've noticed that the motor makes a "ticking" sound...my dad thinks it could be the fuel injectors but further examination looks like one of the small pulleys is wiggling. I guess my question for everyone---are our motors just noisy? I feel like a Mercedes benz should be a quiet car and not make any noises outside of the norm.


Also--I was washing the wheels on my car and it sounded like there was an intermittent beeping sound (kind of like a dead battery on a fire alarm in your house) coming from the front end... are there fuses or any electrical items you guys can think would be causing this?


Im taking the car back to the dealership today to address a creaking panoramic roof and to express my concerns about the two listed items but I would like my other c350 members to give me the business rather than hearing "that's just the way the car sounds" from the dealer.
Reply
Old Sep 24, 2015 | 05:05 PM
  #2  
elmariachi304's Avatar
Junior Member
 
Joined: Mar 2013
Posts: 48
Likes: 0
1967 250SEL, 1982 380SL, 2000 ML320, 2005 SL500, 2018 GLE350
Originally Posted by acaruso8
Hello--I recently purchased a 2012 c350 coupe 4matic certified from a well known dealership. Ive only had it for 45 days but I've noticed that the motor makes a "ticking" sound...my dad thinks it could be the fuel injectors but further examination looks like one of the small pulleys is wiggling. I guess my question for everyone---are our motors just noisy? I feel like a Mercedes benz should be a quiet car and not make any noises outside of the norm.


Also--I was washing the wheels on my car and it sounded like there was an intermittent beeping sound (kind of like a dead battery on a fire alarm in your house) coming from the front end... are there fuses or any electrical items you guys can think would be causing this?


Im taking the car back to the dealership today to address a creaking panoramic roof and to express my concerns about the two listed items but I would like my other c350 members to give me the business rather than hearing "that's just the way the car sounds" from the dealer.
Funny you should ask. The engine noise is definitely NOT normal. You're talking about when it is running, right? Not clicks after parking and turning it off? Because that's normal expansion/contraction of metal.

But the pano roof creaking? DEFINITELY normal. I guess the extent of it could vary slightly, but it's inherent to the design. Look at the top of your car... the glass fits into the frame in large solid pieces that span the entire width of the frame. The frame of your car is designed to flex slightly-- glass is not. For example, when coming out a drive way on a hill when you have to make a 90 degree turn at the bottom. Your car's frame flexes slightly when you're pulling down the hill and turning right. But the glass does not and so you hear it "setting" in the frame. If you're hearing it A LOT, all the time, maybe it needs to be lubricated. But it'll never go away completely.

By the way, guys on the E class forum that have pano roofs on their cars report the same thing. It's part of the tradeoff you make getting it. It looks cool, but it's heavy and occasionally noisy. I'll note that in a typical week of driving I'll only hear it a couple of times, and even then only when I'm flexing the frame performing a maneuver like the one I described above.

Oh yeah, you mentioned something about beeping too. I have no idea what that could be, sorry.
Reply
Old Sep 29, 2015 | 05:44 PM
  #3  
acaruso8's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2015
Posts: 23
Likes: 0
2012 C350 Coupe 4matic
In response to my orientalist post. Here are the dealer comments :

CLIENT STATES PANORAMIC ROOF MAKES LOUD POPPING NOISE WHEN GOING OVER DIPS. PERFORMED ROAD TEST AFTER MULTIPLE TESTS FOUND NOISE COMING FROM PANORAMIC ROOF FRAME. REMOVED ROOF TRIM ON VEHICLE AND CHECKED BOLTS ON FRAME. FOUND LEFT FRONT BOLT STRIPPED. .2 NON TIME FOR REPLACEMENT OF BOLT. REPLACED BOLT AND TORQUED TO SPEC. REINSTALLED ROOF TRIM AND ROAD TESTED. NOISE IS GONE

As for the other two they said everything was operating as designed and that they are designed
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 04:54 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