SL55 AMG, SL63 AMG, SL65 AMG (R230) 2002 - 2011 (2003 US for SL55 and 2004 for the SL65)

SL55/63/65/R230 AMG: Sl55 amg 2003 not unlocking

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Old 08-27-2018, 01:11 PM
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Sl55 amg 2003 not unlocking

After sitting overnight my car doesn’t want to unlock or start after manually unlocking. After several tries I walk away and come back later after half hour or so and it will unlock and start. I don’t know why it’s doing this.
Old 08-27-2018, 11:05 PM
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How old are your batteries?
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littleBeast (08-28-2018)
Old 08-27-2018, 11:52 PM
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Try replacing the battery in your key(s).
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Old 08-28-2018, 05:16 PM
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I don’t know how old batteries are. Haven’t had car very long. It seems to be in excellent condition except for this problem that just started. I don’t know about the arming mode it can be set for. I’m wondering if I set it and don’t really know how to clear it if that’s the problem? Because when I go out in the morning to try and unlock to, it won’t open. So then I manually open the driver door. Then all the lights start blinking on and off like it thinks I broke into it.The ignition is locked and won’t turn. I read in the hand book that you can simultaneously hold the lock and unlock buttons for 5 seconds and it should clear it. I try that and still can’t do anything until I walk away for quite awhile. Then come back and press the unlock button and it unlocks immediately and I can start it. But if it sits overnight I’m back at square 1 again.
Old 08-28-2018, 05:24 PM
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Smile Thank you all

Wow I hope you are patient with me on this thing. I’m new to this whole forum thing. I posted what I thought was the right place to reply and I guess it wasn’t. I believe it’s number 4 on this thread. Thank you for trying to help me. I think I’m going to have a mechanic look at it. Please read number 4 on this thread if you want to. Thank you
Old 08-28-2018, 08:27 PM
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Originally Posted by QP3
Try replacing the battery in your key(s).
Key was not recognized by the car but I could start it ..... then I change the battery in my key .. still have trouble with it .... change the batteries twice ... then I had the feeling the pack of batteries was a little to cheap ... bought a known brand and key worked fine again and car could be locked and unlocked.
Also worth noticing is the battery in this little fellow - it's know to play tricks when it gets old and starts to leak battery fluid ... search this forum and you will find more info regarding this.
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Old 08-28-2018, 08:52 PM
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Thank you for your input. I’m going to check the anti towing thing. I think I pressed it once not knowing what it was. Also I’m going to check my batteries.

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