E-Class (W212) 2010 - 2016: E 350, E 550
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Is this normal when selecting Reverse???

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Old Jul 8, 2022 | 09:09 PM
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2013 E350 Facelift (Japan Import) 2007 E350 Elegance Wagon, 2014 E350 Wagon facelift model Jap Model
Is this normal when selecting Reverse???

My car is a Japanese import into Australia,

Is this annoying 'bong bong bong sound standard in this model or is it a Japanese thing when you select reverse?


Last edited by Aussie_E350_Wag; Jul 8, 2022 at 09:11 PM.
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Old Jul 8, 2022 | 09:59 PM
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Sounds like the "Backup Warning" signal typical of a delivery truck. Maybe Japanese Wagon builds are classified with trucks?

To answer your question, it's NOT typical for any E-Class in the States, sedan or wagon..
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Old Jul 8, 2022 | 10:22 PM
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Hmmm...That sound is supposed to happen only when doors are open and the vehicle is in gear to warn the risk of roll-away.
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Old Jul 9, 2022 | 06:06 AM
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Originally Posted by W205C43PFL
Hmmm...That sound is supposed to happen only when doors are open and the vehicle is in gear to warn the risk of roll-away.
That sounds much better than my response. Thanks a lot.
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Old Jul 9, 2022 | 06:06 AM
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This sounds will come while driving with seat belt not buckled up.
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Old Jul 9, 2022 | 06:08 AM
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
Originally Posted by My W212
This sounds will come while driving with seat belt not buckled up.
Another good suggestion... And, in your other thread, Is see you're having problems with an airbag.

Last edited by DFWdude; Jul 9, 2022 at 06:16 AM.
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Old Jul 9, 2022 | 10:53 PM
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2013 E350 Facelift (Japan Import) 2007 E350 Elegance Wagon, 2014 E350 Wagon facelift model Jap Model
Seat belt on, door closed...sound is only when reverse is used.

I'm hoping Benzninja can delete the sound...please!!!!
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Old Jul 10, 2022 | 04:02 AM
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I think coding should make this go away or deactivating chime module too . However, it's not that annoying as much as I find in Rolls Royce Silver Spur / Spirit / Dawn Series when you start the engine
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Old Jul 10, 2022 | 05:41 AM
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2013 E350 Facelift (Japan Import) 2007 E350 Elegance Wagon, 2014 E350 Wagon facelift model Jap Model
Originally Posted by DFWdude
Another good suggestion... And, in your other thread, Is see you're having problems with an airbag.
yeah not off to a good W212 start to be honest, hoping the AirSpring is an easy fix and the Hidden Menu might have a fix for this damn noise.
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Old Jul 10, 2022 | 06:55 AM
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It is the seat belt chime sound and that would drive me nuts if it happens all the time when reversing. Definitely get that remedied
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Old Jul 10, 2022 | 07:14 AM
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If it is the seat belt chime, I would connect all the belts to see if the chime goes away. If it does, then start disconnecting the rear belts (one by one), then pass. front... until the chime returns. That will give you an idea of which belt causes the problem.

If it's the rear seat belts causing the problem, remove the rear seat bottom and test some more without the seat in place...

Last edited by DFWdude; Jul 10, 2022 at 07:20 AM.
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Old Jul 10, 2022 | 03:44 PM
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The seat belt chime is easily disabled with Launch/Star/Whatever tool you have that can converse with the car.
I bet the reverse chime is as well, but don't have personal experience.
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Old Jul 13, 2022 | 02:20 AM
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Hey guys just a quick post to say Benzninja fixed the issue, the guy is a master at his craft 100%, can't thank him enough for his help!!...silence when reversing now!!
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Old Jul 13, 2022 | 03:57 AM
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Kudos to him , nice job
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Old Apr 13, 2026 | 02:13 PM
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W212 E350 2010
Hi guys, a bit of a shot in the dark here but I have the exact same issue on my 2010 E350 Japanese import
Does anyone know what the fix was for this noise?
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Old Apr 13, 2026 | 07:54 PM
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This place is a joke.
That is a Japanese spec mandate
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Old Apr 13, 2026 | 11:54 PM
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JP Reverse Chime

Originally Posted by KieranH20
Hi guys, a bit of a shot in the dark here but I have the exact same issue on my 2010 E350 Japanese import
Does anyone know what the fix was for this noise?
This is done through a variant coding... likely the gateway that stores most of the chassis configs.
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Old Apr 14, 2026 | 01:59 AM
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Originally Posted by CaliBenzDriver
This is done through a variant coding... likely the gateway that stores most of the chassis configs.
Thanks for the reply, can this be done via an SCN code in the parktronic control module? or will I need to find a third party who can re code.
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Old Apr 14, 2026 | 03:51 AM
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Originally Posted by KieranH20
Thanks for the reply.

can this be done via an SCN code in the parktronic control module?
or will I need to find a third party who can re code.
It's easier than SCN unless you can fetch the firmware files necessary to match config you need.

If you can't do it,
get it done remotely to your liking.
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