SBC noise MY03-06
Humming/buzzing noise during pressure buildup from SBC system
E-Class (211) MY03-06, and CLS (219) MY06 Under warranty: Mention DTB P-B-42.46/27e the single suction damper is being replaced by a suction hose with integral double suction dampers (part # A2114208826). In the process, they will bleed the SBC system with Star Diagnosis. Out of warranty: Make sure all service campaigns and recalls have been applied to your vehicle, have the SA check your VIN in VMI. Normally only service campaigns and recalls do not expire - honored always. DTBs are only honored under warranty and/or extended warranty. However, in this case a part was modified for better brake performance (i.e.: eliminate noise) therefore, it may be worth your while to request a no cost goodwill repair from dealer and MBUSA. If you want a copy f the DTB to present to your SA private mail your email address. |
Dan, the SBC always makes some kind of noise when first building pressure.
How is this humming/buzzing noise different ? |
Originally Posted by starbrite
(Post 2655336)
Dan, the SBC always makes some kind of noise when first building pressure.
How is this humming/buzzing noise different ? |
Originally Posted by starbrite
(Post 2655336)
Dan, the SBC always makes some kind of noise when first building pressure. How is this humming/buzzing noise different ?
Originally Posted by Davel
(Post 2655687)
Yep, i concur
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Thank you Konigstiger for this. I had Serv. B done, and also gave them the DTB u provided. Covered under warranty. As you said, it does not eliminate, but does reduce the sound. It is still noticeable, but not as much. Thank you.
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Well my E500 model 2003 i have SBC noise comes from the woofer speaker and its shame and cannot be removed wish someone can give me on how to solve this problem.
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BTW, was this "upgrade" ever put into production vehicles or were they all single dampers and then addressed as needed ?
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Originally Posted by starbrite
(Post 2712297)
BTW, was this "upgrade" ever put into production vehicles or were they all single dampers and then addressed as needed ?
EPC -> VIN -> 42 brakes -> 090 brake lines -> suction hose If part #A2114208826 is the only one listed, you already have the hose with double dampers. If not, and more than one hose is listed more than likely you will need to upgrade. |
I had this upgrade done today and it really does quite things down. Thanks again Dan for a great tip!
Hose part number has been updated with a -05 at the end. They also replaced a ring, gasket and cap. Here's a pic of the new hose ( I assume you know what the old one looks like if it's on your car) : http://mysite.verizon.net/fwk323/pics/sbc.jpg |
Originally Posted by gnma
(Post 2693834)
Thank you Konigstiger for this. I had Serv. B done, and also gave them the DTB u provided. Covered under warranty. As you said, it does not eliminate, but does reduce the sound. It is still noticeable, but not as much. Thank you.
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Originally Posted by starbrite
(Post 2726402)
I had this upgrade done today and it really does quite things down. Thanks again Dan for a great tip!
Hose part number has been updated with a -05 at the end. They also replaced a ring, gasket and cap. Here's a pic of the new hose ( I assume you know what the old one looks like if it's on your car) : http://mysite.verizon.net/fwk323/pics/sbc.jpg |
Done under warranty @ N/C
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Originally Posted by Roehl
(Post 2783780)
How much did it cost you?
And yes, back from the dead....lol. |
Hmmm, this is how my hose looks. sorry for the crappy pic. had to use my phone
I remember having the damper changed, but it's gotten louder over time. Oh and one time after they changed the damper they changed my SBC pump so hopefully they didn't put an old hose back in. EDIT: Deleted the old one. Will post new one shortly |
Yea, you need to take a better pic. Doesn't quite look right ( see post #9 above)
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1 Attachment(s)
Here is a better pic. Lol Iphone 4 vs Blackberry Curve 9300 (the camera is sh*t on my phone. 2mp, no autofocus, and no flash :( i miss my Bold 9700).
Ok back on topic :) hmm i think it is the update one but it has become noiser as of late versus when they changed the damper back at about hmmm 30XXX miles |
Well, that's definately the new hose w/damper.
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Originally Posted by starbrite
(Post 4798725)
Well, that's definately the new hose w/damper.
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Mine also plays through the Rear Subwoofer, will this solve that problem?
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update: so i still thought the sbc noise was still a little too loud even with the new damper. about a month ago, "brakes visit workshop" message would come up on the cluster (not in red). my indy shop checked it out and said the pump was good but the sensor was bad. once the sensor was changed, braking quality/feel is much better (feels more like a regular ABS system such as our 02 CL500) and there is less noise imo.
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Do you know what sensor was replaced?
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Originally Posted by Efivehundred
(Post 5119936)
Do you know what sensor was replaced?
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Originally Posted by gaazmon
(Post 5119830)
update: so i still thought the sbc noise was still a little too loud even with the new damper. about a month ago, "brakes visit workshop" message would come up on the cluster (not in red). my indy shop checked it out and said the pump was good but the sensor was bad. once the sensor was changed, braking quality/feel is much better (feels more like a regular ABS system such as our 02 CL500) and there is less noise imo.
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Originally Posted by murman
(Post 5121091)
I trust you don't mean the brake pedal feedback you get when ABS is activated, because one of the SBC features is that it doesn't have the rough ABS pedal feedback.
idk lol am i just crazy? :D maybe it's all in my head :) but i definitely feel a difference |
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