E-Class (W211) 2003-2009

Keyless Go

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Old Jul 23, 2010 | 05:49 PM
  #1  
MSackson's Avatar
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From: Charlottesville, VA
00 S500 & 2008 E350 Wagon
Keyless Go

I have a 2008 E350 Wagon. The Keyless Go system does not work well. I have to hold the key near the door for it to open, not in my pocket, like MB says. Often, after I have started the car, the warning light goes off saying key not detected.

The MB dealer has already replaced the driver side door handle thinking that would solve it. The only thing it did was to create a creaky noise when the window is raised and lowered.

Anybody else have this issue?
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Old Jul 23, 2010 | 06:37 PM
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W212 M276 DELA 30 ; W211 M113k, W126 M117, W126 OM617, W211 OM642 ; R107 M117 X2, Sierra 1500 LZ0
Did you try the batteries in the key? That seems like the most simple thing to do. Goto radio shack and buy the replacements (battery type in the manual). I think each key requires two. Keyless go kills batteries within a year or so from what I've read.
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Old Jul 23, 2010 | 10:28 PM
  #3  
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00 S500 & 2008 E350 Wagon
Thanks. I've changed the batteries in both keys, twice...
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Old Jul 24, 2010 | 10:39 AM
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W212 M276 DELA 30 ; W211 M113k, W126 M117, W126 OM617, W211 OM642 ; R107 M117 X2, Sierra 1500 LZ0
Well it must be the transmitter inside the car. I think there's something additional in the cabin that holds the link after entry. The door handles are only for entry/exit I think. It's got to be that or the keys themselves...
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Old Jul 24, 2010 | 01:44 PM
  #5  
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I had a problem similar to this. Where do you keep your key? When I keep it in my phone pocket it doesnt work, but when it keep it in my other pocket it works perfectly.
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Old Jul 24, 2010 | 01:57 PM
  #6  
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From: Space Coast, FL
'14 E350, '03 H-D FXDL
FWIW, I've had the same batteries in my keyless go FOBS for my SL when I bought it new in Jul 06; no problems so far.
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Old Jul 24, 2010 | 03:14 PM
  #7  
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2011 E550 4Matic, 2002 M3 Vert
I have the same problems with my 09. The keyless features are very spotty on a consistent basis. I have a hard time believing the batteries have anything to do with this.
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Old Jul 24, 2010 | 03:22 PM
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https://mbworld.org/forums/4172414-post2.html
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mine doesnt work as well when the key is next to my cell phone. must be some type of interference.
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