M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

Keyless Go stop working!

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Old Dec 9, 2011 | 12:40 PM
  #1  
Benzy550's Avatar
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2011 ML550
Keyless Go stop working!

Since last month my Keyless Go not working properly, untill today I can not open/lock by pulling handle or press square black button to lock it, about keyless start to work only if i leave the key fob in cup holder, if i move key fob out off cup holder position, a message Key Not Detected.
Anyone got this problem, please post your feed back
Thank you very much
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Old Dec 9, 2011 | 12:56 PM
  #2  
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From: Philadelphia area
2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
Originally Posted by Benzy550
Since last month my Keyless Go not working properly, untill today I can not open/lock by pulling handle or press square black button to lock it, about keyless start to work only if i leave the key fob in cup holder, if i move key fob out off cup holder position, a message Key Not Detected.
Anyone got this problem, please post your feed back
Thank you very much
Have you tried your other key? How old are the batteries in the keys.
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Old Dec 9, 2011 | 01:19 PM
  #3  
Benzy550's Avatar
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2011 ML550
Originally Posted by sosh
Have you tried your other key? How old are the batteries in the keys.
I replaced battery 2 to 3 mths ago, and it's happen around that time. After I replace baterry, it's blinking more than 10 times when Everytime I got in the Benz and leave the key in cup holder
I dont remember I've try the other key.
Problem after problem that make me really want to trade in for BMW X5 5.0, even though my ML just hit 20,000 mls.
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Old Dec 10, 2011 | 10:37 AM
  #4  
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From: Woodstock, IL
His 2019 RAM Cummins Turbo Diesel Laramie; Her's 2007 ML320 CDI P3; Mine BMW R1200R
2011 ML with 20K miles, sounds like a dealer warranty issue?
Take it to MB, get a loaner and go back when they say it's fixed.
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Old Dec 10, 2011 | 11:29 AM
  #5  
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From: Philadelphia area
2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
Originally Posted by dgiturbo
2011 ML with 20K miles, sounds like a dealer warranty issue?
Take it to MB, get a loaner and go back when they say it's fixed.
Warranty or no warranty, Dealer is the most capable place to have this taken care of. OP says it began when he changed the key batteries, could be he damaged something opening up the key.
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Old Dec 18, 2011 | 12:07 AM
  #6  
C-rod's Avatar
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From: Guelph, Ont. CA.
2014 ML350 BlueTec.
This happened to me...........

as well............I replaced my battery after 11 months and a month later, the message came up that I had to replace the battery again.........So I replaced it with a better brand battery............(CR 2025)
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Old Dec 18, 2011 | 05:02 PM
  #7  
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Sounds like you ended up with bad battery in your key.

I have gone back to buying my batteries from the MB dealer for keys - I tried various others (well, cheap ones) and they didnt work for long.

I suppose I could buy Varta ones from somewhere else of course, but batteries at MB arent expensive.

Richard
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Old Dec 20, 2011 | 12:50 PM
  #8  
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2011 ML550
Brought to dealer, technician said Botha remote key fobs are bad, ordered new key fobs take 2-3 days.
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