Oh Oh...first problem...
Thread Starter
Super Member
Joined: May 2005
Posts: 528
Likes: 5
E500 4matic, 2014 GL320, 2013 C300, 2015 Stingray
Oh Oh...first problem...
Anyone ever heard of this...
When i turn the car off and get out, there is a low humming sound coming from somewhere in the engine compartment. If i open a door and close it - the noise stops...
anyone???
Aceman
When i turn the car off and get out, there is a low humming sound coming from somewhere in the engine compartment. If i open a door and close it - the noise stops...
anyone???
Aceman
Last edited by aceman; Sep 11, 2005 at 08:10 PM.
Out Of Control!!
Joined: Jul 2002
Posts: 28,933
Likes: 12
Originally Posted by aceman
Anyone ever heard of this...
When i turn the car off and get out, there is a low humming sound coming from somewhere in the engine compartment. If i open a door and closet it - the noise stops...
anyone???
Aceman
When i turn the car off and get out, there is a low humming sound coming from somewhere in the engine compartment. If i open a door and closet it - the noise stops...
anyone???
Aceman
MBWorld Fanatic!
Joined: Feb 2004
Posts: 5,143
Likes: 1
From: South Orange County, CA
4 wheels
Its all the electrical computers, SBC, and what not shutting down slowly. Our E55's do it, its just a characteristic of the E.
Nothing to worry about, trust me. I asked the dealer and he replicated it on his E class, and every other E class on the lot.
Nothing to worry about, trust me. I asked the dealer and he replicated it on his E class, and every other E class on the lot.
Thread Starter
Super Member
Joined: May 2005
Posts: 528
Likes: 5
E500 4matic, 2014 GL320, 2013 C300, 2015 Stingray
i don't think so...
Ricky,
This is when i turn the car off....i haven't heard the car making noise in the garage a good few minutes after its off till this weekend...
i'll see how long it goes tomorrow. i end up opening/shutting a door to stop it.
aceman
This is when i turn the car off....i haven't heard the car making noise in the garage a good few minutes after its off till this weekend...
i'll see how long it goes tomorrow. i end up opening/shutting a door to stop it.
aceman
Out Of Control!!
Joined: Jul 2002
Posts: 28,933
Likes: 12
Originally Posted by aceman
Ricky,
This is when i turn the car off....i haven't heard the car making noise in the garage a good few minutes after its off till this weekend...
i'll see how long it goes tomorrow. i end up opening/shutting a door to stop it.
aceman
This is when i turn the car off....i haven't heard the car making noise in the garage a good few minutes after its off till this weekend...
i'll see how long it goes tomorrow. i end up opening/shutting a door to stop it.
aceman
The bodies in my trunk keep thumping...
I think I've said too much...
MBWorld Fanatic!
Joined: Dec 2003
Posts: 1,439
Likes: 1
From: THE NAPA VALLEY, CA
Build date 2-04 E500
Originally Posted by aceman
Anyone ever heard of this...
When i turn the car off and get out, there is a low humming sound coming from somewhere in the engine compartment. If i open a door and close it - the noise stops...
anyone???
Aceman
When i turn the car off and get out, there is a low humming sound coming from somewhere in the engine compartment. If i open a door and close it - the noise stops...
anyone???
Aceman
MBWorld Fanatic!
Joined: Jun 2005
Posts: 4,968
Likes: 2
From: FL410
'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
Originally Posted by HELL ONA HARLEY
Hell, If I don't hear buzzing, whirring, hissing, etc comming from my ride then I would swear something is going wrong with it.....
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Member
Joined: Jul 2004
Posts: 135
Likes: 0
From: So Cal
'04 E500
Buzz Buzz Buzz
My car does the same thing too. But it goes away after about 5-10sec. I guess it's the SBC/computer related preparatory thingeeeeemajiggggg... I didn't even bother asking the dealer so that they can put their grease filled fingers allover my pristine ve-hic-le. Then, come back and tell me that everything checked out.
-=PCH=-
-=PCH=-
Originally Posted by CE750
funny you should say that cause mine used to make a buzzing/pump like sound every time I opened the driver or pax door... and not it does it about every 10th time... I called the dealer asking if it was ok? Of course he had no idea
Almost a Member!
Joined: Jul 2005
Posts: 47
Likes: 0
From: Texas
'06 E350, appearance/entertainment/ sunroof/DVD NAV/brilliant silver (C744)/Ash leather
Likely source SBC
This noise is likely to come from the Sensotronic Brake Control System, in some occasions from the DC Airmatic, and is indeed absolutely normal (see details why below). As mentioned by some of you, without some light noises there is probably something wrong.....
The SBC system is functional as soon as it is “wakened” by:
• opening a door
• operating the central locking system
• depressing the brake pedal
• turning the key to position 1
• operating the parking brake
Activating SBC will:
• charge the accumulator (MOST LIKELY SOURCE OF NOISE !!)
• perform a Predrive Check
• move the pads towards the rotors with ~60 bar pressure
• erase the fault memory
The DC Airmatic wake-up occurs with any one of the following "inputs":
• key in the ignition
• open any doors
• open trunk lid
• activate parking brake
• pressing the brakes
Wake-up causes the DC Airmatic system to monitor vehicle ride height and adjust as needed dependent on vehicle load changes:
• if level is >30mm lower than normal (0mm +/-10) it will raise to normal level (if reservoir pressure >11 bar)
• if level is >65mm lower than normal, it will be raised even with a reservoir pressure of <11 bar by the compressor (prerequisite battery voltage >12.5v) to -63mm (critical level) (POSSIBLE SOURCE OF NOISE !!)
• if level is >10mm higher than normal, it will be lowered to normal
The SBC system is functional as soon as it is “wakened” by:
• opening a door
• operating the central locking system
• depressing the brake pedal
• turning the key to position 1
• operating the parking brake
Activating SBC will:
• charge the accumulator (MOST LIKELY SOURCE OF NOISE !!)
• perform a Predrive Check
• move the pads towards the rotors with ~60 bar pressure
• erase the fault memory
The DC Airmatic wake-up occurs with any one of the following "inputs":
• key in the ignition
• open any doors
• open trunk lid
• activate parking brake
• pressing the brakes
Wake-up causes the DC Airmatic system to monitor vehicle ride height and adjust as needed dependent on vehicle load changes:
• if level is >30mm lower than normal (0mm +/-10) it will raise to normal level (if reservoir pressure >11 bar)
• if level is >65mm lower than normal, it will be raised even with a reservoir pressure of <11 bar by the compressor (prerequisite battery voltage >12.5v) to -63mm (critical level) (POSSIBLE SOURCE OF NOISE !!)
• if level is >10mm higher than normal, it will be lowered to normal
Last edited by Bode; Sep 11, 2005 at 11:17 PM.
MBWorld Fanatic!
Joined: Jun 2005
Posts: 4,968
Likes: 2
From: FL410
'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
Originally Posted by Bode
This noise is likely to come from the Sensotronic Brake Control System, in some occasions from the DC Airmatic, and is indeed absolutely normal (see details why below). As mentioned by some of you, without some light noises there is probably something wrong.....
The SBC system is functional as soon as it is “wakened” by:
• opening a door
• operating the central locking system
• depressing the brake pedal
• turning the key to position 1
• operating the parking brake
Activating SBC will:
• charge the accumulator (MOST LIKELY SOURCE OF NOISE !!)
• perform a Predrive Check
• move the pads towards the rotors with ~60 bar pressure
• erase the fault memory
The DC Airmatic wake-up occurs with any one of the following "inputs":
• key in the ignition
• open any doors
• open trunk lid
• activate parking brake
• pressing the brakes
Wake-up causes the DC Airmatic system to monitor vehicle ride height and adjust as needed dependent on vehicle load changes:
• if level is >30mm lower than normal (0mm +/-10) it will raise to normal level (if reservoir pressure >11 bar)
• if level is >65mm lower than normal, it will be raised even with a reservoir pressure of <11 bar by the compressor (prerequisite battery voltage >12.5v) to -63mm (critical level) (POSSIBLE SOURCE OF NOISE !!)
• if level is >10mm higher than normal, it will be lowered to normal
The SBC system is functional as soon as it is “wakened” by:
• opening a door
• operating the central locking system
• depressing the brake pedal
• turning the key to position 1
• operating the parking brake
Activating SBC will:
• charge the accumulator (MOST LIKELY SOURCE OF NOISE !!)
• perform a Predrive Check
• move the pads towards the rotors with ~60 bar pressure
• erase the fault memory
The DC Airmatic wake-up occurs with any one of the following "inputs":
• key in the ignition
• open any doors
• open trunk lid
• activate parking brake
• pressing the brakes
Wake-up causes the DC Airmatic system to monitor vehicle ride height and adjust as needed dependent on vehicle load changes:
• if level is >30mm lower than normal (0mm +/-10) it will raise to normal level (if reservoir pressure >11 bar)
• if level is >65mm lower than normal, it will be raised even with a reservoir pressure of <11 bar by the compressor (prerequisite battery voltage >12.5v) to -63mm (critical level) (POSSIBLE SOURCE OF NOISE !!)
• if level is >10mm higher than normal, it will be lowered to normal
Thread Starter
Super Member
Joined: May 2005
Posts: 528
Likes: 5
E500 4matic, 2014 GL320, 2013 C300, 2015 Stingray
Guys....
I'm talking about after i turn the car off and get out. I realize it makes all kinds of crazy noises when i approach the car, unlock, and get in...
MBWorld Fanatic!
Joined: May 2003
Posts: 1,348
Likes: 0
From: Northern NJ
2014 BMW 550i
I think I've heard what you speak of. While most of the times I hear a hissing noise when I lock the car up, I sometimes do hear a humming style noise. I believe that it has to do with the Airmatic.
MBWorld Fanatic!
Joined: Feb 2004
Posts: 5,143
Likes: 1
From: South Orange County, CA
4 wheels
ITS NORMAL. My E55 and E350 DO IT ALL THE TIME. I know what you are talking, about. My dealer replicated the problem on nearly every other E on the lot and his own E.
Thread Starter
Super Member
Joined: May 2005
Posts: 528
Likes: 5
E500 4matic, 2014 GL320, 2013 C300, 2015 Stingray
Ok...
I'll keep an eye...rather an ear on it.
I have 7500 miles on it after 3.5 months and this is the first time i've heard the noise, thus why i thought there was (is) a problem.
thx for the info!
Aceman
I have 7500 miles on it after 3.5 months and this is the first time i've heard the noise, thus why i thought there was (is) a problem.
thx for the info!
Aceman
MBWorld Fanatic!
Joined: Jun 2005
Posts: 4,968
Likes: 2
From: FL410
'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
Originally Posted by aceman
I'll keep an eye...rather an ear on it.
I have 7500 miles on it after 3.5 months and this is the first time i've heard the noise, thus why i thought there was (is) a problem.
thx for the info!
Aceman
I have 7500 miles on it after 3.5 months and this is the first time i've heard the noise, thus why i thought there was (is) a problem.
thx for the info!
Aceman
I'm at 3.5 months too.. about 4500miles now.. and since it was new.. it's making new and different noises... I think it actually "adapts"
Super Member
Joined: Nov 2004
Posts: 627
Likes: 1
From: The Earth
Mercedes all the way!
haha, all absolutely normal, not to worry - it's a complex cars with lots of stuff doing their own thing. another source of noise on my E is the door mirrors folding when i lock up the doors - i don't understand why it makes this noise though - the S-class doesn't. then again, the S is a much quieter car in terms of locking sounds, brake sounds, etc etc - it seems Merc consciously wanted to remind customers of the technology, not sure if that's true. but i'll bet the "door lock" sound (mentioned above) is intentional, since the S makes absolutely no noise. nothing like a nice solid thump to give you a feeling of security.
Almost a Member!
Joined: Aug 2007
Posts: 35
Likes: 0
From: Laguna Niguel, CA
SL500
humm
Ya, I've never had a car that did, but everytime I park my car, I hear all sorts of hums, clicks, whatever, you name it. I've just gotten used to it. I read somewhere that these were "tests" the car performs on itself. I dunno. It still runs fine (except for my blasted top cylinders).
Senior Member
Joined: Apr 2005
Posts: 293
Likes: 0
From: Austin, TX
'13 E550 W4
Suspension adaptation is part of it - this happens as we exit and enter our cars. Also, braking components make this noise as they are updating signals from the car.
Last edited by Scambo; Aug 26, 2007 at 08:59 PM.
Senior Member
Joined: Aug 2007
Posts: 440
Likes: 1
From: Exit 16E
07 E350 4Matic / Sport with P1
)
Senior Member
Joined: Aug 2007
Posts: 440
Likes: 1
From: Exit 16E
07 E350 4Matic / Sport with P1
My first problem:
After having the car for a couple of weeks, I returned to the dealer to get my license plates. I didn't want to wait for an employee to attach them, so I got them, and went home. As it turns out...I had to bend the plates vertically in the middle to get them to stay on the bumper (since the frt bumper is pointed). Looks a little cheesy too.
After having the car for a couple of weeks, I returned to the dealer to get my license plates. I didn't want to wait for an employee to attach them, so I got them, and went home. As it turns out...I had to bend the plates vertically in the middle to get them to stay on the bumper (since the frt bumper is pointed). Looks a little cheesy too.
Member
Joined: Feb 2007
Posts: 142
Likes: 5
From: Houston
2020 E450 Coupe, 2022 Porsche Macan, 2001 Porsche 911
SPNJHockey,
Go back to the dealer and ask for the front license plate bracket. It is designed to fit "nicely" on the front bumper and gives it a more finished look. My dealer gave it to me at no charge....
Go back to the dealer and ask for the front license plate bracket. It is designed to fit "nicely" on the front bumper and gives it a more finished look. My dealer gave it to me at no charge....
