Haunted Car?

AMGSC · 02-20-2010, 01:56 AM

Has anybody had the alarm go off by itself numerous times?

It goes off even when I'm driving sometimes. Usually it just goes off the first time sounding the alarm but the next time it just starts flashing lights.

I installed a brand new alarm control unit from the dealer for $300 and it's still doing the same thing.

Any ideas guys? What's the fix?

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gt4awd · 02-20-2010, 03:19 AM

The siren itself has an internal backup battery. When that goes the alarm will start to act up...

loudandheard · 02-20-2010, 03:41 PM

I've been having similar problems ever since I got my car. While under warranty, I had the siren replaced twice. Every time that they replaced it, the alarm would work fine temporarily. Now that I am out of warranty, I bought another siren to see if that will fix the problem.

I've never had the alarm go off while I was driving. Usually what happens to me is that I will arm the alarm and the alarm will go off immediately afterward. Some times the alarm would go off hours later and some times the siren does not even work.

What kills me is that when the alarm goes off, the fogs will stay on flashing and I have had it drain my battery more than once. I usually lock the doors from inside because I'm scare that the alarm will drain my battery.

I still have not installed the new siren that I bought, but I'll let you know how it goes once I do.

RedBull · 02-20-2010, 09:19 PM

Quote:

Originally Posted by AMGSC

Any ideas guys? What's the fix?

Try an exorcism.

AMGSC · 02-22-2010, 01:28 AM

Quote:

Originally Posted by gt4awd

The siren itself has an internal backup battery. When that goes the alarm will start to act up...

I'll check out the internal battery. Thanks for the tip!

SilverBulletAMG · 02-22-2010, 01:05 PM

Given your cars past, I would not be suprised at all if it was indeed haunted!haha

AMGSC · 02-22-2010, 01:17 PM

Quote:

Originally Posted by SilverBulletAMG

Given your cars past, I would not be suprised at all if it was indeed haunted!haha

No kidding but it is a smooth as butter now, At 6.17 psi I put down 426rwhp without even breathing hard. The handling is ridiculous, much like the little go-karts at the Dromodome or Speedzone tracks. I also got this 5Gal resevoir that recirculates the coolant and keeps the car really cool!

I posted some pics of my 175mm crank pulley and 65mm SC pulley that should really make things interesting in the next month or so. Custom tune and programmable MAF was a major breakthrough!

JonMBZ · 02-22-2010, 08:38 PM

I had a problem like this after my car got detailed, they wet something they were not suppose to and I told them not to wash my engine, but I think they did anyways. My alarm was going off randomly one of my xenon bulbs blew and my car kept thinking my door was open randomly. After it all dried out it was fine. Also like others have said the techs first thought it was the siren or door contact switch which it wasnt.

AMGSC · 02-23-2010, 01:16 AM

Quote:

Originally Posted by JonMBZ

I had a problem like this after my car got detailed, they wet something they were not suppose to and I told them not to wash my engine, but I think they did anyways. My alarm was going off randomly one of my xenon bulbs blew and my car kept thinking my door was open randomly. After it all dried out it was fine. Also like others have said the techs first thought it was the siren or door contact switch which it wasnt.

Hmmm. The alarm stopped acting up tonight. Maybe after detailing the car, he actually got the engine comparment wet. I'll ask him about it.

02-20-2010, 03:19 AM	#2
gt4awd MBWorld Fanatic! Garage is empty, add now Join Date: Sep 2008 Posts: 1,034 Drives: 2005 Pontiac GTO 6.0 LS2 - Blue	The siren itself has an internal backup battery. When that goes the alarm will start to act up... __________________ SOLD 2002 C32 AMG Sedan [132,000 Miles] Clear Side Markers \| CL Style Grille \| Flat Emblem \| CF Front Lip Spoiler \| CF Rear Diffuser \| CF Trunk Spoiler K&N Air Filters \| NGK IX (2 Step) \| KV-85 \| 185MM EUROCHARGED \| TVT Thermostat \| PSK Belt Wrap Johnson CM30 \| DIY Intercooler Isolation \| 26x7x2 FB H/E \| A/F & PSI Pillar

02-22-2010, 01:05 PM	#6
SilverBulletAMG MBWorld Fanatic! Garage is empty, add now Join Date: Aug 2006 Location: Keesler AFB, Gulfport, MS Posts: 1,717 Drives: C32 AMG	Given your cars past, I would not be suprised at all if it was indeed haunted!haha __________________ C32 AMG - gone but not forgotten..Hello 535i! DynoJet: 384whp/417wtq Mustang Dyno: 341whp/385wtq VRP Headers - LET 185mm Pulley - 93 Octane LET Tune - DIY Intake - CM30 Pump - C3P HE - Phenolic Spacers - TVT T-Stat - Green Filters - Magnaflow Cats - Resonator & Rear Cat Delete - H&R Springs - Denso IK22 Plugs - Magnecor 8.5mm Wires - Weltmeister Quad Exhaust - CF diffuser, spoiler, mirror covers - 18" AMG Turbine Rims

02-22-2010, 08:38 PM	#8
JonMBZ MBWorld Fanatic! Garage is empty, add now Join Date: Jun 2006 Location: California Posts: 2,041 Drives: 06 C55, 09 E350	I had a problem like this after my car got detailed, they wet something they were not suppose to and I told them not to wash my engine, but I think they did anyways. My alarm was going off randomly one of my xenon bulbs blew and my car kept thinking my door was open randomly. After it all dried out it was fine. Also like others have said the techs first thought it was the siren or door contact switch which it wasnt. __________________ Resonator + Rear Cats Deleted

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02-20-2010, 03:41 PM	#3
loudandheard MBWorld Fanatic! 2003 Mercedes-Benz C-Class Join Date: Mar 2007 Location: Houston, TX Posts: 1,911 Drives: C32/C55 AMG	I've been having similar problems ever since I got my car. While under warranty, I had the siren replaced twice. Every time that they replaced it, the alarm would work fine temporarily. Now that I am out of warranty, I bought another siren to see if that will fix the problem. I've never had the alarm go off while I was driving. Usually what happens to me is that I will arm the alarm and the alarm will go off immediately afterward. Some times the alarm would go off hours later and some times the siren does not even work. What kills me is that when the alarm goes off, the fogs will stay on flashing and I have had it drain my battery more than once. I usually lock the doors from inside because I'm scare that the alarm will drain my battery. I still have not installed the new siren that I bought, but I'll let you know how it goes once I do.

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02-23-2010, 01:16 AM