Phantom "Dong" Noise
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
Phantom "Dong" Noise
On my 2-lane suburban street, I get a single "Dong" noise when I approach my home, roughly 100 yards away. It's the same noise you hear when you leave a seatbelt unbuckled. Oddly, this occurs only on my street... nowhere else.
I've checked (pulled and released) all the seatbelt straps, and jiggled the buckles, etc. While driving, I'm the only one buckled, and there is nothing sitting in any of the other seats. I've found no codes with my iCarsoft scanner. And there are no fault displays that accompany the sound. The Blue "P" icon sometimes lights up, but this reflects my speed, maybe 10-15mph.
I'd like to think this is a random noise that started to sound just a couple weeks ago, but it now occurs quite reliably, shortly after I make the left turn onto my street at the end of a drive. It's just a minor annoyance, but I would like to figure out why it is (suddenly) happening. Any ideas?
I've checked (pulled and released) all the seatbelt straps, and jiggled the buckles, etc. While driving, I'm the only one buckled, and there is nothing sitting in any of the other seats. I've found no codes with my iCarsoft scanner. And there are no fault displays that accompany the sound. The Blue "P" icon sometimes lights up, but this reflects my speed, maybe 10-15mph.
I'd like to think this is a random noise that started to sound just a couple weeks ago, but it now occurs quite reliably, shortly after I make the left turn onto my street at the end of a drive. It's just a minor annoyance, but I would like to figure out why it is (suddenly) happening. Any ideas?
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
Interesting idea, thanks. Yes, COMAND is on all the time. I'm currently listening to some XM-radio, but the noise started before I joined the annual Thanksgiving grace period. I'm not using Navigation, though.
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Hey dude, that single dong is usually associated with a notice in the dash display, like hood is open, low washer fluid, lamp is out, low gas, service interval reminder, etc. So, no messages are saved as you scroll through the display?
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
Funny, though, that it only happens on my street? Does my lower speed approaching home prompt it?
Last edited by DFWdude; Nov 28, 2022 at 08:21 AM.
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Do you have Parktronic? I know it activates at startup and shuts off at 18mph, I think. When I had a bad sensor I would get the single dong when I went below 18mph, letting me know the system had an error ( bad sensor).
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From: Pepper Pike Ohio
24 GLS580 '23 E450 4matic 12 E350 4Matic
Mine is a '12 so older parktronic, but I will go out today and see if I can get a gong, I wonder if it's sensing between the curb mail boxes thinking for a second it found a good parking spot? crazy second thought; maybe the NAV is indicating destination reached as your house may be entered as a home destination? Hmm...
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
Funny that the homes on my street are now festooned with outside Christmas lighting. Naw, that can't be it, right?
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Thread Starter
MBWorld Fanatic!
Joined: Apr 2006
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
Mine is a '12 so older parktronic, but I will go out today and see if I can get a gong, I wonder if it's sensing between the curb mail boxes thinking for a second it found a good parking spot? crazy second thought; maybe the NAV is indicating destination reached as your house may be entered as a home destination? Hmm...
Boy, this little detective mystery is exciting (not really!)
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On my 2-lane suburban street, I get a single "Dong" noise when I approach my home, roughly 100 yards away. It's the same noise you hear when you leave a seatbelt unbuckled. Oddly, this occurs only on my street... nowhere else.
I've checked (pulled and released) all the seatbelt straps, and jiggled the buckles, etc. While driving, I'm the only one buckled, and there is nothing sitting in any of the other seats. I've found no codes with my iCarsoft scanner. And there are no fault displays that accompany the sound. The Blue "P" icon sometimes lights up, but this reflects my speed, maybe 10-15mph.
I'd like to think this is a random noise that started to sound just a couple weeks ago, but it now occurs quite reliably, shortly after I make the left turn onto my street at the end of a drive. It's just a minor annoyance, but I would like to figure out why it is (suddenly) happening. Any ideas?
I've checked (pulled and released) all the seatbelt straps, and jiggled the buckles, etc. While driving, I'm the only one buckled, and there is nothing sitting in any of the other seats. I've found no codes with my iCarsoft scanner. And there are no fault displays that accompany the sound. The Blue "P" icon sometimes lights up, but this reflects my speed, maybe 10-15mph.
I'd like to think this is a random noise that started to sound just a couple weeks ago, but it now occurs quite reliably, shortly after I make the left turn onto my street at the end of a drive. It's just a minor annoyance, but I would like to figure out why it is (suddenly) happening. Any ideas?
Thread Starter
MBWorld Fanatic!
Joined: Apr 2006
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
Hmmm that sounds very familiar to what I remembered, did you happen to hold or had something lean on the centre console rotating knob (I am sorry that I don't remember what is that called but hopefully you get the idea) by chance, because if you are on the NAV screen, holding it for a few seconds saves the coordinates as a POI and everytime you pass that location it will let you know with a sound. Try deleting all your personal POIs or stored destinations and see if it still triggers it.
Thread Starter
MBWorld Fanatic!
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
Thread Starter
MBWorld Fanatic!
Joined: Apr 2006
Posts: 4,694
Likes: 1,829
From: Dallas-Ft.Worth,TX
2016 E350 Sport
Hmmm that sounds very familiar to what I remembered, did you happen to hold or had something lean on the centre console rotating knob (I am sorry that I don't remember what is that called but hopefully you get the idea) by chance, because if you are on the NAV screen, holding it for a few seconds saves the coordinates as a POI and everytime you pass that location it will let you know with a sound. Try deleting all your personal POIs or stored destinations and see if it still triggers it.
Thread Starter
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
I'm starting to revisit the Parktronic issue. The blue "P" button stays lit until at least 20 mph, which I think is a change from normal. Another scanner session doesn't show any faults in the Parktronic system. I'll need to find a place to parallel (and perpendicular) park to see if it fails to work. That might indicate a faulty sensor.
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Joined: May 2012
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From: Pepper Pike Ohio
24 GLS580 '23 E450 4matic 12 E350 4Matic
I'm starting to revisit the Parktronic issue. The blue "P" button stays lit until at least 20 mph, which I think is a change from normal. Another scanner session doesn't show any faults in the Parktronic system. I'll need to find a place to parallel (and perpendicular) park to see if it fails to work. That might indicate a faulty sensor.
Okay so my blue P is on until 21 mph then goes off, comes back on at 19 mph, did this a few times.
Just to rule out NAV, do you have a checkered flag on the NAV screen for your house?
Last edited by pierrejoliat; Dec 8, 2022 at 04:23 PM.
Thread Starter
MBWorld Fanatic!
Joined: Apr 2006
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
Hmmm that sounds very familiar to what I remembered, did you happen to hold or had something lean on the centre console rotating knob (I am sorry that I don't remember what is that called but hopefully you get the idea) by chance, because if you are on the NAV screen, holding it for a few seconds saves the coordinates as a POI and everytime you pass that location it will let you know with a sound. Try deleting all your personal POIs or stored destinations and see if it still triggers it.
Anyway, I then fiddled among several menu screens, eventually (don't ask me how) landing on a POI "Audio Settings" screen. I selected "off" on the "alert on POI" option, and the crosshair disappeared and hasn't returned. No more "Dong" when entering my home street. Hallelujah!!!
Thanks, W205C43PFL, for this suggestion which put me on the right path. I didn't have to delete any POIs, but the alert is now gone.
Miller Time...
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OK, so I decided a fresh day might give better results. Revisiting this post, I backed the car out into the street, turned-on NAV, and zoomed in to the 1/16 mile resolution. This was the key. Sure enough, there was now a crosshair on the street, 20 yards further up the street (beyond where I normally turn into my driveway). I don't know why this hasn't cleared before, as I did drive around the block several times previously, letting the car run over the NAV spot.
Anyway, I then fiddled among several menu screens, eventually (don't ask me how) landing on a POI "Audio Settings" screen. I selected "off" on the "alert on POI" option, and the crosshair disappeared and hasn't returned. No more "Dong" when entering my home street. Hallelujah!!!
Thanks, W205C43PFL, for this suggestion which put me on the right path. I didn't have to delete any POIs, but the alert is now gone.
Miller Time...
Anyway, I then fiddled among several menu screens, eventually (don't ask me how) landing on a POI "Audio Settings" screen. I selected "off" on the "alert on POI" option, and the crosshair disappeared and hasn't returned. No more "Dong" when entering my home street. Hallelujah!!!
Thanks, W205C43PFL, for this suggestion which put me on the right path. I didn't have to delete any POIs, but the alert is now gone.
Miller Time...
