E-Class Coupe (C238) & Cabrio (A238) 2017 - E200, E220, E300, E350, E400, E450 [Coupes &Cabriolets]

2011 e350 Cabriolet Won't Start

Old May 24, 2020 | 02:41 PM
  #1  
xelsco's Avatar
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2011 Mercedes e350 Cabriolet
2011 e350 Cabriolet Won't Start

I have a 2011 Mercedes e350 Cabriolet. When i turn the key, nothing happens, not even a click as the starter makes when it tries to turn on.

I went to the store to purchase groceries and when i got to the car to turn it on, it wouldn't start. No Check Engine light. All it shows on the dash is "Take your key from Ignition." The key will turn all the way but will not do anything. Won't crank/click or show the data on the dash that it is trying to start. It just shows "Take your key from Ignition."

Called AAA and when the driver got to my location he tested my battery and said i needed a new battery. After $178 for the new battery...that still did not fix the issue.

I tried my second spare remote key - nothing
New Battery - nothing
Checked the fuses and they are good
Replaced brake light switch - nothing
Checked starter relay and its good.
I looked in the trunk all I see is a fuse box and the Sirius Satellite Radio but no Auxiliary battery. I have looked on the driver side panel and still no luck.

Any help anyone? Please?
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Old Jul 12, 2021 | 10:53 AM
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2011 E350 Convertible
I have the same problem. The AUX battery is in the dash on drivers side. Open the door and there is an access panel and you need to remove the lower valence panel to access it correctly (I watched this on an video). I replaced the main battery as well and nothing changed. I was able to get it going by taking the key in and out several times and it finally started. Since it is a weekend car I don't drive it that much but will post when I find something
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Old Jul 12, 2021 | 11:45 AM
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'71 Pinto
207 should be posting here: https://mbworld.org/forums/e-class-c...brio-a207-141/



Last edited by konigstiger; Jul 12, 2021 at 11:49 AM.
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Old Jul 12, 2021 | 01:05 PM
  #4  
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2017 mercedes GLE 43 coupe
are both key fob barrettes the same age?

Both might be dead.
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Old Jul 13, 2021 | 08:23 AM
  #5  
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2011 E350 Convertible
Thanks for the replies

Originally Posted by jester1
are both key fob barrettes the same age?

Both might be dead.
They are the original key FOBs and both have new batteries. I went out last night and she started 5 out of 5 times. This has happened twice in the last couple of months so not really sure if its the steering unlock system or FOB or ??? Car is 10 years old with just over 80k miles so I would expect a better life expectancy on starting components, Jeff
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Old Aug 11, 2021 | 09:50 PM
  #6  
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From: Springfield, MO USA
2011 e350 Cabriolet Convertible
Originally Posted by xelsco
I have a 2011 Mercedes e350 Cabriolet. When i turn the key, nothing happens, not even a click as the starter makes when it tries to turn on.

I went to the store to purchase groceries and when i got to the car to turn it on, it wouldn't start. No Check Engine light. All it shows on the dash is "Take your key from Ignition." The key will turn all the way but will not do anything. Won't crank/click or show the data on the dash that it is trying to start. It just shows "Take your key from Ignition."

Called AAA and when the driver got to my location he tested my battery and said i needed a new battery. After $178 for the new battery...that still did not fix the issue.

I tried my second spare remote key - nothing
New Battery - nothing
Checked the fuses and they are good
Replaced brake light switch - nothing
Checked starter relay and its good.
I looked in the trunk all I see is a fuse box and the Sirius Satellite Radio but no Auxiliary battery. I have looked on the driver side panel and still no luck.

Any help anyone? Please?
Well, well another with the same hiccup. I have not found what ails my e350 2011 either, I was given the suggestion to turn on the headlights then start.
Surprisingly it did. But that suggestion is short lived. I still have intermittent crank/start. All my batteries are new including the fobs. and I am to have a diagnostic test conducted on the 17th August. Hopefully after that is completed and find the culprit, I stop biting my finger nails.
If my test proves to be rewading and we can get back to normal ---- I'll repost.
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