01 C320 Alarm Siren works when it wants to..
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'01 C320
01 C320 Alarm Siren works when it wants to..
Ok..so I have searched multiple sites and multiple forums for this exact problem and I can't find anything...some similar problems but nothing like this.
So I noticed that the siren doesn't BLARE when the alarm is tripped (I opened a door from the inside), just the lights flash. So ok...I assume then that the siren needs to be replaced, so I remove it behind the right passenger wheel well and noticed that it and the connector are pretty scummy so I clean it up and plug it back in to see if that had anything to do with it. So then I go to test the alarm again (opening door from inside) and BAM..Ear Piercing siren is wailing in my ear..I then press the unlock button on the key to make it stop. So I proceed to lock the car again..wait 10 seconds...and open the car door again from the inside..........and no siren, the lights are doing the rapid flashing but there is no siren at all. I have come to the conclusion that once unplugged and plugged back in, the siren will only sound once the next time the alarm is tripped and won't work any other time. I am trying to figure out if this is indeed the siren or something else in the alarm system like a relay or something....Can someone please give any advice they may have. It would be greatly appreciated.
Thanks
Jason
2001 C320
So I noticed that the siren doesn't BLARE when the alarm is tripped (I opened a door from the inside), just the lights flash. So ok...I assume then that the siren needs to be replaced, so I remove it behind the right passenger wheel well and noticed that it and the connector are pretty scummy so I clean it up and plug it back in to see if that had anything to do with it. So then I go to test the alarm again (opening door from inside) and BAM..Ear Piercing siren is wailing in my ear..I then press the unlock button on the key to make it stop. So I proceed to lock the car again..wait 10 seconds...and open the car door again from the inside..........and no siren, the lights are doing the rapid flashing but there is no siren at all. I have come to the conclusion that once unplugged and plugged back in, the siren will only sound once the next time the alarm is tripped and won't work any other time. I am trying to figure out if this is indeed the siren or something else in the alarm system like a relay or something....Can someone please give any advice they may have. It would be greatly appreciated.
Thanks
Jason
2001 C320
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Joined: Dec 2006
Posts: 118
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From: Casa Grande, Arizona
2005 c230k
I am not sure if my car ('05 c230) and yours have the same alarm, but I have had several issues with mine. Each time I take it to the dealer they fix it and it just stops working after 3 - 4 months. It has had a couple horns put in and it just acts up again after a few months.
I would say a need siren should help. I have not looked at mine, but I suspect that it's location is leading to it getting dirty and wet. Maybe if you could seal it up after you put in a new horn that may help. I have heard that they are around the $100 price range.
This post is not very helpful, but at least a start.
I would say a need siren should help. I have not looked at mine, but I suspect that it's location is leading to it getting dirty and wet. Maybe if you could seal it up after you put in a new horn that may help. I have heard that they are around the $100 price range.
This post is not very helpful, but at least a start.
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Joined: Oct 2008
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'01 C320
I removed and disassembled the siren and found it to be heavily corroded on the inside. The actual siren casing was cracked from the over tightened bolt that held it on the bracket, which is how the water came in. The battery in the siren was completely dead and the circuit board has blown circuits on it. I am leaning more towards a faulty siren but want to make sure before I dump $160 at Portland Mercedes.
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MBWorld Fanatic!
Joined: Feb 2004
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From: Milton/Westport, MA USA
me: 2015 SL400 & 2015 ML400; wife: 2022 GLC Coupe; daughter: 2017 GLC SUV
wow; surprisingly it's $200 at Duval, which usually has the lowest prices on parts; the only online place I found beats them at $150
http://www.worldimpex.com/parts/merc...en_928127.html
http://www.worldimpex.com/parts/merc...en_928127.html
