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From: Pacific Palisades, CA & Sherman Oaks, CA (work)
2012 E350 coupe Black/Almond, 61k miles in 2020
Originally Posted by BOTUS
the amp is one of two components (with the comand unit up front) that must be operational for the comand to do anything (everything else is unnecessary)
the Amp failure ALWAYS results in no audio anywhere (and no FM numbers or text showing on the comand screen) - but ALL features show up, including nav
the siruis module usually creates a break in the MOST loop and that makes the whole system play up
thank you. I want to make sure I understand your response. Are you saying the amp must be working or I would not be getting those beep noises upon ignition, upon getting too close to a barrier, upon turning off the car, and upon not buckling my seatbelt?
From: Pacific Palisades, CA & Sherman Oaks, CA (work)
2012 E350 coupe Black/Almond, 61k miles in 2020
Originally Posted by BOTUS
the "audio off" is an on-screen way to turn off the comand - there is no opposite function as its off and you can't see it - the on off button around the knob turns on, or is the other way to turn it off
it appears the later unit NTG3.5 throws an on screen message to say I'm broken - My NTG 3.0 had been through the dead Amp in the boot scenario that Mercedes built them all with - but no on-screen messages, just no noise from any source and on FM radio you get no numbers or station names.
note the later NTG3.5 system loves to blow up the hard-drive in the comand unit - the partially good news is its easy to to take out - as the later unit has a removable caddy so the comand can stay where it is - almost as if they expected it to fail !!! the not so good news - like the other chap https://mbworld.org/forums/s-class-w...nd-module.html you need to have cloned your drive before it dies...
from the other thread that popped up - here's your puddle maker
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I wondered what that waffle iron/egg crate looking piece was for. If that is where water is ingressing, then the water in my wheel well under the Sirius unit has no way out other than evaporation. Perhaps I will drill an 1/8" hole in the wheel well in order for the water that comes in through that waffle/egg bratev thingy to have a way of dripping out.
thank you. I want to make sure I understand your response. Are you saying the amp must be working or I would not be getting those beep noises upon ignition, upon getting too close to a barrier, upon turning off the car, and upon not buckling my seatbelt?
nope - historically most beeps and bongs on cars were created from other sources - these days when canbus and so much detritus is built into a car I can see it might be cheaper to try and include into the built in speakers... previously if the warning noises only got noise from the stereo - turning it off would turn off all warning stuff which wouldn't work - but software has fingers in all pies all the time, and could turn it on as the amp is never off (helping it to wear out)
for example parking sensor noise on most cars comes via the stereo - but lights on does not, and the beeps from radar noticing it thinks you are entering dangerous situation is not from the stereo either (where fitted). My note was referencing Audio sources (like Radio, TV, Phone, CD, Aux, Nav, TMC), not warning beeps and bongs
I wondered what that waffle iron/egg crate looking piece was for. If that is where water is ingressing, then the water in my wheel well under the Sirius unit has no way out other than evaporation. Perhaps I will drill an 1/8" hole in the wheel well in order for the water that comes in through that waffle/egg bratev thingy to have a way of dripping out.
correct - Mercedes are by far the most diligent of all manufacturers in the art of "design to fail" - they started 15 years before most and have spent many billions on ways to extract money - they are very good at it - the ROI is huge - and its mostly wasted on marketing to cover it up and keep selling to the new world order.... who just create a war somewhere to get tax dollars to fund yet more new toys - and mugs left paying tax, end up buying them down the line - so the poor pay two or three times for the "privilege" of having a headache
From: Pacific Palisades, CA & Sherman Oaks, CA (work)
2012 E350 coupe Black/Almond, 61k miles in 2020
Originally Posted by BOTUS
nope - historically most beeps and bongs on cars were created from other sources - these days when canbus and so much detritus is built into a car I can see it might be cheaper to try and include into the built in speakers... previously if the warning noises only got noise from the stereo - turning it off would turn off all warning stuff which wouldn't work - but software has fingers in all pies all the time, and could turn it on as the amp is never off (helping it to wear out)
for example parking sensor noise on most cars comes via the stereo - but lights on does not, and the beeps from radar noticing it thinks you are entering dangerous situation is not from the stereo either (where fitted). My note was referencing Audio sources (like Radio, TV, Phone, CD, Aux, Nav, TMC), not warning beeps and bongs
thanks for the clarification.
I have a new fiber optic loop arriving tomorrow to make sure the loop I used last year isn't now broken ... if the fiber optic loop inserted in place of the Sirius does not cause my AUX or CD to play, would that likely point the finger to the amp as being the faulty module?
if you got any water ingress in the bucket beside the sirius module the amp is almost as low for the water line to be a pain
NOTE you must NEVER open the boot with the boot trim removed when there's water on the boot lid or its raining - if you check the side boot trim there is a tray on the back of the trim - it catches all the water the delightfully falls off the boot lid (as if they designed it to do so) - this just leaves lots of moisture for the electronics to sauna in - rather than a perfectly directed water stream that runs on to the Amp and TV circuit boards
Every 221 made gets Amp failure - borrow one and try - but if the Audio starts to break down usually intermittently at first - flip straight away to FM and check for the inner frequency display frame to see if it lost its names or numbers - the Amp is also the AM FM radio tuner and no sound lost display the amp has failed - be careful with second-hand > 75% will be likely be dead too
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