CLK-Class (W209) 2003 on: CLK 270 CDI, CLK 200K, CLK 200 CGI, CLK 240, CLK 320, CLK 350, CLK 500, CLK 550 [Coupes & Cabriolets]

Keyless go

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Old Jun 12, 2022 | 01:38 PM
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Foreverfortune's Avatar
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Joined: Mar 2006
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From: Vancouver BC
2004 CLK55 cabrio, 2006 ML500
Keyless go

2004 clk55 cabrio,

Hi I am having an Issue with my keyless go. Everything was fine, then car battery died, I must have left something on its a new AGM battery only a month old.

Now my keyless go does not work. Door handles, trunk latch, shifter button all give me the key not recognized msg. Everything else on the keys works. Buttons work, lock, unlock, if held down I can get the tops and windows to go up and down.Panic button only gets flashing lights so I guess my siren is dead.

Checked all the fuses from the 3 fuse boxes and none are blown. Tried searching forums, most are related to blown #8 fuses, shorting, working on one side or and not the other, key battery etc.

Both my keys act the same. Are my issues related to antenna amp if my remote still works? My Radio s​​​​ignals are fine. I did just replace the head unit but this was a few days after the keylessgo stopped working so it can't be the cause.

Tried a few fixes like leaving keys in ignition for a few hours or some methods of pressing lock and unlock to get the key to sync. So far no go.

If any suggestions, much appreciated.Thx

Last edited by Foreverfortune; Jun 12, 2022 at 01:40 PM.
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