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Mercedes humming noise?
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Mercedes humming noise?
there is an idler, and the tention pulley that may cause noise, then the ac clutch pulley, the alternator , water pump, and finally the power steering pump if you dont have a mechanics stethiscope then you are screwed cheapest bet. If you’re in the market for a Mercedes Benz, you may be wondering how to find one for sale by owner. Aug 12, 2008 · I am getting this humming noise from the front end when driving. 2 Unevenly worn tire tread can also cause humming noise in Mercedes-Benz S-Class. There is a humming sound coming from the back seat area when the car is running. #1 · Oct 5, 2009 (Edited) I've noticed lately, there seems to be what could best be described as a humming sound coming from under the hood. Good afternoon! I've found some time again to continue on the German four-wheel-machine-mobile, now that the car drives properly I'd like to get the radio sorted out. My local shop convinced me that the Right Rear axle bearing was bad. Would appreciate any help please. The four noises that car owners complain about most often are CV joint noise, water pump noise, belt noise, and heat shield noise. I live in chicago suburbs and I send my benz to downtown location twice - no problem find. 2003 mercedes ml350 makes humming noise. It's actually very audible from outside the vehicle, as it's passing by. Sometimes it sounds more like a whining noise. If you hear a clicking, whirring, vibrating or other unusual sound coming from your product, try the following: Humming, buzzing or rattling noise heard from product | Wave® music system. Pwr steering fluid is good, ABC fluid is a below the mark but still above 1/2 way up the. Mechanic's Assistant: I understand that youre experiencing a loud humming noise when making a turn and accelerating in your 2017 GLC 300 4Matic, and Im confident that the Mercedes Mechanic will be able to help you diagnose and resolve this issue. Raise the vehicle with a jack and jack stands and feel the wheel for excessive play or stiffness. I can also hear a very faint tin … Recently, reports have been surfacing from the small town of Omagh in Northern Ireland of a persistent, low-frequency hum that gets louder at night and never quite seems to let up. noise was there before service, didn't mention it to friend as i forgot. The dealer is suggesting a change of the fuel pump which will set me back by around 300-400 pounds I took the car. #2 · Dec 28, 2009 (Edited) If the rubber mounts are not installed correctly you will get the vibration. The outside wheel in a turn has a higher load. any ideas of what it could be?. If this changes the noise then you should be able to blame the noise on the engine or transmission producing it. I noticed that when driving around 50-55 mph I hear a humming/whining sound , almost like there's a fire truck in the distant background. The vibration is pretty much always there but gets very noticeable at highway speed as well as a slight "rumble noise". It is typically perceived louder at night than during the day, and louder indoors than outdoors. The noise will stop immediately if I lock the doors but will continue for an hour if I don't lock the doors. It sounds to me as though the car is crying because you drive a diesel Dodipops Active Member. I got in the back while the car was idling and the humming seems to be from under the driver side rear seat cushion. Oct 29, 2013 · Have you ever noticed or heard a humming noise from the engine after it parked? I've been hearing this noise from day one. Dec 22, 2008 · Does anyone notice a noise from the dash? If I turn off the car but keep the dash lit up, it's there. The grinding may also be caused by damaged or worn synchronizer blocking rings, shift forks, or bearings. This started back in the winter and I only heard it a couple of times when the 4matic kicked in. If you didn't know, a routine tire rotation will help prevent uneven wear in your tires. Glasgow #1. 116 posts · Joined 2007 In cold temperatures, my heater fan is making an annoying chirping noise while running at low speed. I don't touch the car, have the key on me, or even have any embrace options. One is in the A/C control unit in the center console, and the other is in the front overhead panel. May 1, 2022 · Try shifting to neutral when the noise occurs. Even if you only hear a slight hum, finding the source and repairing it quickly can prevent even more costly fixes later on. Dec 8, 2021 · The most common causes for humming noise in Mercedes-Benz S-Class at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. Could it be a fuse or a transmission. It does it when the car is not moving in park, so its not wind, tires, transmission, drivetrain vibration, etc. I am new to this forum and have just inherited a W203 C220 CDI merc. Like Sort by Oldest first Jan 6, 2024 · This modern-day mystery has been reported for decades, and one expert studying the phenomenon believes he might know what causes the strange pulsating sound only some can hear. If you hear a clicking, whirring, vibrating or other unusual sound coming from your product, try the following: Humming, buzzing or rattling noise heard from product | Wave® music system. For the past couple of days, however, this "humming" noise has been coming up after. it shifting fine on all gears and no check engine light either. First, turn off the power to ensure safety. It sounds like a small motor buzzing either behind the dash or footwell. #1 · Jul 5, 2017 (Edited) I just got my cla45 Amg about 2 weeks ago it's a 2015 with 27k miles. The sound happens during acceleration only, which I believe rules out any braking related issues. Cla45amglife Discussion starter. From the day I picked it up, everything was working beautifully. Have you ever found yourself humming a catchy tune but unable to identify the song? Don’t worry, you’re not alone. Nothing vibrates on the car. After the car has been parked for an … This modern-day mystery has been reported for decades, and one expert studying the phenomenon believes he might know what causes the strange pulsating … The classic description is that The Hum sounds like a car or truck engine idling outside your home or down the block. The noise is a common problem, with Mercedes Benz E-Class, S-Class, C-Class, and ML-Class and it is most noticeable when you first start up the car. org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz. i replace water pump and power streeing pump and engine mounts all had some damage. Weird humming (bearing like) noticeable at ~80 km/h and over. The vibration is pretty much always there but gets very noticeable at highway speed as well as a slight "rumble noise". I used Meyle transmission fluid that I bought from ebay. Nov 16, 2023 · Recently, reports have been surfacing from the small town of Omagh in Northern Ireland of a persistent, low-frequency hum that gets louder at night and never quite seems to let up. If you hear a clicking, whirring, vibrating or other unusual sound coming from your product, try the following: Humming, buzzing or rattling noise heard from product | QuietComfort 35 wireless headphones I. I have a humming noise in my 2005 SC600 It sounds like the noise a power steering pump makes but does not fluctuate - Answered by a verified Mercedes Mechanic Mercedes: c180loud humming sound comingit gets louderwheels. A humming or droning noise that increases with vehicle speed is most likely caused by the tires or wheels. It sounds like a tiny fan spinning. It seems louder when I have rear Passengers. Jump to Latest Follow 2K views 3. would love to hear any thoughts thanks in advance Mercedes-Benz / S430 / 2002 / Humming Noise; Humming Noise. I've been noticing on mine it sounds like there's a compressor motor or fan going for about 2 or 3 seconds after the engine shuts off. This is a vital part of your tire because it connects the wheel and the axle to create a smooth tire rotation. I don't touch the car, have the key on me, or even have any embrace options. Nov 16, 2023 · Recently, reports have been surfacing from the small town of Omagh in Northern Ireland of a persistent, low-frequency hum that gets louder at night and never quite seems to let up. 6 Transmission, Scatter. If it just started making noise, there is a chance that it was physically damaged. Here are three associated with your engine. Model is 300 GLC 2020 with 10k on the odometer. PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help: 2001 CL500 - Rear Humming noise? User Name: Remember Me? Password: Register: ShopForum Gallery: FAQ: Calendar: Today's Posts: Search. Driver's door was open. It doesn't matter if the car is completely running or just in accessory mode it's still there and doesn't seem to die down with time or if the car is freshly. It has developed a humming noise at speeds above about 30mph which gets louder the faster you go. levitra 20mg It is a slight buzzing or humming sound and is only present once the dash is on. I can start of by apologizing that my english aint to good so i might have some issues describing my problem. The buzzing was caused by a faulty door switch. I'm thinking it's the bearings but I only have 14,000 miles on a 06, I do have the oz 20" wheels. All 3 can create noise in the front end. All 3 can create noise in the front end. Jul 26, 2013 · Reports started trickling in during the 1950s from people who had never heard anything unusual before; suddenly, they were bedeviled by an annoying, low-frequency humming, throbbing or rumbling. Jan 18, 2024 · While humming typically means there's a problem with your wheel bearings, tire treads, or engine belts, there are many other causes for the noise. its is an auxillary function. Dec 5, 2021 · The most common causes for humming noise in Mercedes-Benz GLS at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. This whining noise can be caused by a bad serpentine belt, a boost leak or a vacuum leak. Service was done 26th sept 2009, my friend works at merc garage and only uses genuine parts, engine oil low ash, oil filter, air filter, pollen filter. Brief sequence of events follows: Sep 22, 2015 · I have noticed my car makes various noises hours after it is shut off. w123 om602 massive "humming" noise 30-50mph. If you hear a clicking, whirring, vibrating or other unusual sound coming from your product, try the following: Humming, buzzing or rattling noise heard from product | QuietComfort 35 wireless headphones I. Dec 8, 2021 · The most common causes for humming noise in Mercedes-Benz S-Class at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. The noise gets louder as you speed up to around 90 km/h (55 mph) and then diminishes as you go faster. Less common cause is failing transmission. Hotter days or hard driving right before parking will lengthen the pump's post-shutdown operating time. This is common for AC units running for a long time without maintenance. I don't hear mine at all, ever. Is clear when it goes from 0-50 km/h, then goes. I tried to figure out where it is coming from, sounds like from the front two LED lamps, not certain though. mopeds for sale near I changed the head unit and it was still there. The hood was very hot in the area of where the noise was coming from. 2) if you can, switch to higher profile tires (which to some means uglier car ), 205/55R17 or even 60R16, but you might have to change the rims also. I recently changed the brakes on my C117 CLA 45 AMG (09/2028). When the ceiling fan is installed, an electrician will attach wires to the wing nut connector. Many of you wrote here about the humming/vibration noise coming from the SBC pump, very annoying at low speed and stereo off. Mercedes-Benz C63 AMG: ive recently noticed on my 2011 c63, i've recently noticed on my 2011 c63, 9k miles, when i start my car and am driving at low speeds, there's a humming noise. It is most pronounced at about 1400 rpm and again at 2100 rpm when applying just a little throttle. This happens in first gear up to approx 2000 rpm and then 2nd, again up to approx2000 rpm and so on. org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. Have you ever found yourself humming a catchy tune but couldn’t quite put your finger on the song’s title? Don’t worry, you’re not alone. Not every thing I do is according to the strict guidelines of WIS, so use my directions at your own risk. This is an older thread, you may not receive a response, and could be reviving an old thread. It sounds like a Fuel Pump Noise but I jacked up the slk and check from the bottom Welcome to SLKWorld. This is the main reason why you need a STAR/DAS system to deactivate the system when doing brake work. Dec 8, 2021 · The most common causes for humming noise in Mercedes-Benz S-Class at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. 32 posts · Joined 2006 W202 / C200 150 Noticed buzzing noise, constant frequency. After a few Mercedes owned (R129, W124, W202 and a Smart 451) I'm proud to announce bought a 2007 W251 320CDI. Mechanic's Assistant: OK. the transmission is humming at start up but after a few miles the humming stops. Nov 16, 2023 · Recently, reports have been surfacing from the small town of Omagh in Northern Ireland of a persistent, low-frequency hum that gets louder at night and never quite seems to let up. If this changes the noise then you should be able to blame the noise on the engine or transmission producing it. E350 4matic grinding noise on slow turns. procare therapy salary The ignition of your Mercedes E320 contains a specific code that is used when programming your keys to ensure that your keys open and start only your E320. Or so it seams from video5 108 1999 ML320 163 2000 E320 210 2003 ML350 163 The sound only happens when the car is idling very low, or when the car is put in reverse. I have just noticed a light humming noise coming from the overhead control panel. Dec 5, 2021 · The most common causes for humming noise in Mercedes-Benz GLS at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. Viewed 3k times Some of the common causes may include the following: 1 One of the most common causes of car stereo buzzing is loose wiring or connections. Dec 8, 2021 · The most common causes for humming noise in Mercedes-Benz S-Class at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. Jan 28, 2015 · I park the car in the garage every day and happened to be walking by it the other night and heard a very strange humming noise. Mercedes-Benz Sedan / Coupe / Wagon Forums Humming Noise. But upon raising the hood and using a length of rubber hose as a rudimentary stethoscope, it was quickly obvious that the sound came directly from the. It is a slight buzzing or humming sound and is only present once the dash is on. Race the engine gently with the car in Neutral and listen carefully for any signs of the offensive noise that are associated with the engine speed. If you have just one speaker making noise, the issue is likely to be limited to that speaker. If you hear a chirping or squealing noise, you've found the part with the bad bearing. Have you ever found yourself humming a catchy tune but unable to identify the song? Don’t worry, you’re not alone. Pulsating rubbing/humming sound emitting from belt/pulley area. Over time, rotors can wear unevenly and the surface can. The most common causes for humming noise in Mercedes-Benz C-Class at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. Less common cause is failing transmission. Cost: Universal joint replacements cost around $350-425 USD, but CV joints may be upwards of $1,100 USD. Not noticeable from the outside of the truck or when actually moving, this noise is faint and can be mainly heard from the driver's seat. Brake calipers compress the brake pads against the rotors, which creates not only heat, but vibration if the pad is not operating correctly.
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The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more!. Have you ever experienced the frustration of turning on your garbage disposal only to hear it humming loudly without any grinding action? A disposal that makes noise but doesn’t ac. Tire cupping or scalloping is a type of uneven wear that is known to cause humming noise at high speeds, and is often mistaken for a bad wheel bearing. The front air works fine. If you hear a clicking, whirring, vibrating or other unusual sound coming from your product, try the … I just changed conductor plate on my transmission and changed oil on my 1999 mercedes ml430. When asked what is causing the noise, if “normal”, couldnt give me and answer and just said it normal. A200 making a humming noise at 60? This kind of sounds like a door creaking, and it stays once I hit 60. Run the engine for a few minutes or until it gets sufficiently warm. Asked by Glk3502013 Aug 01, 2018 at 08:45 PM about the 2013 Mercedes-Benz GLK 350 4MATIC. Weird humming (bearing like) noticeable at ~80 km/h and over. It gets louder the faster i go. The humming stops or gets lower when going over 65-70mph. jackie heimlich fox news Michael Warfield : This could very well be caused by tires or a wheel bearing. Letting the foot of the gas does not affect the sound, neither acceleration nor braking Automatic transmission A D V E R T I S E M E N T S. May 1, 2022 · Try shifting to neutral when the noise occurs. Leaving uneven tires on your vehicle may cause your tires to skid when you try to stop and increase your fuel consumption In this video, I show how I fixed the buzzing noise coming from behind my dashboard on my Mercedes-Benz W204 C204 C-Class (C250, C300, C350, C63) Weird humming (bearing like) noticeable at ~80 km/h and over. A problem developed that when releasing the brake pedal, a hissing noise comes from the brake pedal - similar to a vacuum leak sort of. Couple of points: 1) make sure your truck if level after you jacked it up. Hey! So everything has been going well, I've started doing work on my own car to save money and I've just fixed a coolant leak issue (faulty cap) and a hesitation & misfiring issue (worn spark plugs and a dirty fuel filter). It does it when the car is not moving in park, so its not wind, tires, transmission, drivetrain vibration, etc. Merc C180 sport W202. Great car except for constant harmonic hum at about 25 mph and above. Tire cupping or scalloping is a type of uneven wear that is known to cause humming noise at high speeds, and is often mistaken for a bad wheel bearing. From the day I picked it up, everything was working beautifully. Even a small decrease might help reduce road noise inside. Tire cupping or scalloping is a type of uneven wear that is known to cause humming noise at high speeds, and is often mistaken for a bad wheel bearing. Exhaust System Inspection and Repair; Examine the Exhaust System: Inspect the exhaust system for leaks, cracks, or loose components. It comes on and off with the climate control unit. The car had been parked for … Have you ever noticed or heard a humming noise from the engine after it parked? I've been hearing this noise from day one. I thought it might be the wheel bearing but it sounds more like a motor humming. 2 days ago, loud humming/whirring sound started coming from the rear end of the car. cursed brookhaven server link Your Mercedes 2002 SL500, 216 CL500, all fully loaded Jan 14, 2007 #2 Recording of noise, revving while parked. The most significant noise occurs when the engine is 1200+rpms while turning. Mercedes-Benz Sedan / Coupe / Wagon Forums 2007 E350 Rear End Humming/Buzzing on Test Drive. 43 posts · Joined 2007 My daughter's 2011 GLK 350 has about 103k miles. Sometimes it sounds like a tiny cooling fan somewhere in the firewall area. If you hear a clicking, whirring, vibrating or other unusual sound coming from your product, try the following: Jun 8, 2018 · There's a humming buzzing minor vibration from 30mph on up. Seems to be coming front RF wheel area. I can describe the sound like when an early 90s 4x4 is trying to. The vibration is pretty much always there but gets very noticeable at highway speed as well as a slight "rumble noise". If you hear a clicking, whirring, vibrating or other unusual sound coming from your product, try the following: Mar 13, 2008 · I just changed conductor plate on my transmission and changed oil on my 1999 mercedes ml430. These are pretty much tell-tale symptoms of a failing pulsation dampener. My mechanic says axleshaft/CV, but I'm not so sure. -Around 30mph it starts and gets loud quickly. I have a CLA 220 4matic 2018. When you turn the steering wheel on your Mercedes-Benz you may hear a loud squeaking or weird whining noise. for some time and worse now, I hear a low level humming noise coming from the front end of my 1997 SL500. ) The noise instantly stops when turning right (even a slight right at speed) but continues when turning left. Fixing the radio - Loud buzzing noise. 351 cleveland engine for sale Nov 20, 2015 · Update: I got back, turned the car off, confirmed the noise was still going on, and loosened the gas cap to relieve the pressure like John suggested. i think the fan runs after the engine is off if the turbo or other engine items are hot. Dec 22, 2008 · Does anyone notice a noise from the dash? If I turn off the car but keep the dash lit up, it's there. Have you ever noticed or heard a humming noise from the engine after it parked? I've been hearing this noise from day one. And it starts buzzing after start up for a few seconds and then intermittenly josefo. Mercedes-Benz AMG Forums. In this video, I explain and demonstrate how to fix a clicking noise from the engine of a 2020 GLS 450 Mercedes Benz. I've been noticing on mine it sounds like there's a compressor motor or fan going for about 2 or 3 seconds after the engine shuts off. I'm thinking it's the bearings but I only have 14,000 miles on a 06, I do have the oz 20" wheels. Brief sequence of events follows: Sep 22, 2015 · I have noticed my car makes various noises hours after it is shut off. 2) buy an extra bottle of fluid and use it to flush transfer case after old fluid was drained. intermittent loud "hooting" noise in right rear. it shifting fine on all gears and no check engine light either. If the car transmission makes noise in the park, it can be because of damaged needle bearings in the transmission torque converter. I then went back to the garage and they replaced the brakes (discs and pads) again as a gesture of goodwill.
Once the car has been running for a little while the sound disappears. If you hear a clicking, whirring, vibrating or other unusual sound coming from your product, try the following: 20 posts · Joined 2006 Humming noise. It's important to regularly check your transmission fluid level find out if you have a leak in your transmission so you can. Been to the dealers twice. It is not particularly loud but it is noticeable. bofa relief org It stops several seconds after the car has been turned off but goes on when the key is in the on position regardless of whehter the climate control is. I replaced the wiper arm/blade, still the buzz. Whining humming noise from motor after warm up and low rpms, 2001 Mercedes ml 320, 2001 mercedes mlmiles, changed - Answered by a verified Mercedes Mechanic - started making a loud noise today when i turned it on and hummed during acceleration. The car shifts through all gears normally and the noise is not there when accelerating. Sun or spill damage. old houses under dollar50k with acreage Take a look around the charger and make sure everything is in good working order. It sounds like a tiny fan spinning. Dec 8, 2021 · The most common causes for humming noise in Mercedes-Benz S-Class at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. Hi, I have a 2008 Mercedes c300 sport pkg. benzonatete The noise is not a humming sound like a bearing or a bumping sound like an axlejoint. I used Meyle transmission fluid that I bought from ebay. It's pretty common on the ML. Dec 8, 2021 · The most common causes for humming noise in Mercedes-Benz S-Class at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. ) The noise instantly stops when turning right (even a slight right at speed) but continues when turning left. I have a 1990 300e 2.
Once the dash is off, the sound goes away. ) The noise instantly stops when turning. The car had been parked for OVER two hours and I don't think it was a "cooling down" fan. took it to Mercedes dealership diagnosed and the changed the timing chain and tensioner. Whatever the cause might be, this article will guide you through the steps. If you hear a clicking, whirring, vibrating or other unusual sound coming from your product, try the following: Humming, buzzing or rattling noise heard from product | QuietComfort 35 wireless headphones I. Had pumps changed and still there. The Station is a weekly newsletter dedicated to transportation. I changed the head unit and it was still there. Hi, I have a 2008 Mercedes c300 sport pkg. Straight or On Ramps, doesn't make a difference. Dec 8, 2021 · The most common causes for humming noise in Mercedes-Benz S-Class at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. 6 liter 192,000 miles Drive train vibration. I have my 2016 cla180 shooting brake. properties for sale fuerteventura The car was quiet when purchased at 34000 miles. engine cool) but only after it warms up after driving a few. Useful speaker information. Hello everyone, I am new here and thought I would give this a try. The most common sign of bad wheel bearing is grinding or humming noise in the cabin from the direction of the affected wheel. Once the car has been running for a little while the sound disappears. Ask Question Asked 5 years, 5 months ago. Hi There, This may be caused by a couple of different things such as a water pump that may be starting to fail or possibly an alternator that is beginning to go bad. Another possibility is that the engine's fuel filter is dirty and needs to be replaced. If this changes the noise then you should be able to blame the noise on the engine or transmission producing it. It has 30000miles on the clock and the following items were replaced - oil change, fuel filter, spark plugs and brake fluid. LED headlights are becoming increasingly popular due to their energy efficiency and brightness. I replaced front wheel bearings this wk (no change in noise). If you hear a clicking, whirring, vibrating or other unusual sound coming from your product, try the following: Jun 8, 2018 · There's a humming buzzing minor vibration from 30mph on up. The most common causes for humming noise in Mercedes-Benz C-Class at high speeds are bad wheel bearing, uneven tire wear and using tires with large tread blocks. But, they are the Dunlops specified by Mercedes (MO) and not run-flats. The front air works fine. Cla45amglife Discussion starter. I've recently been noticing a loud buzzing noise almost like a mini window motor of sorts acting up near the front left driver side headlight. Determining what the problem is will dictate the course of action needed to fix the issue. If it doesnt, then find a long rod like a screwdriver or long extension, put your ear on one end and the other end on different parts under the hood you think it is coming from. lake county news scanner I've recently been noticing a loud buzzing noise almost like a mini window motor of sorts acting up near the front left driver side headlight. would love to hear any thoughts thanks in advance Mercedes-Benz / S430 / 2002 / Humming Noise; Humming Noise. If the noise is still there then I would check the tires and wheel bearings closely. It is a slight buzzing or humming sound and is only present once the dash is on. Ventilation is turned on, but not high (only 1-2 notches). It almost sounds like the same noise from those big tires. I have a 1990 300e 2. If this changes the noise then you should be able to blame the noise on the engine or transmission producing it. Jul 26, 2013 · Reports started trickling in during the 1950s from people who had never heard anything unusual before; suddenly, they were bedeviled by an annoying, low-frequency humming, throbbing or rumbling. The most common sign of bad wheel. remove and inspect for debris, or abraisons if the blower wheel has rubbed the housing. Before diving into solutions, it's essential to identify the specific cause of the noise in your Mercedes-Benz engine. Let me know if that sounds like the location of what you could hearing. The most common symptoms of a bad wheel bearing in Mercedes-Benz CLS are grinding or humming noise, knocking or clunking noise when cornering, shaking steering wheel, body vibration, uneven or abnormal tire wear, play in wheel, and vehicle pulls to one side when driving in a straight line. A problem developed that when releasing the brake pedal, a hissing noise comes from the brake pedal - similar to a vacuum leak sort of. : r/mechanics r/mechanics • 2 yr. with key out, in or engine. My hearing isn't what it used to be. These encompass: Incorrectly Mounted Tires: Tires that have not been correctly mounted onto the wheel rim can generate a humming noise. My car was recently serviced (Service A) by an authorised Mercedes Benz Service Centre. There is a whining/humming noise coming from the engine. Sound seems to come from middle/front of the car, not the rear.