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How To: Replace the batteries in the alarm module

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Old 07-31-2015, 09:23 PM
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Default Re: How To : Replace the batteries in the alarm module

Originally Posted by bspence
When replacing the siren why not relocate it outside it's current location for simpler future service?



Two reasons at least IMHO, one being the heat soak in that area is much lower, and secondly if its hidden there it is much less likely to be tampered with by someone wanting to take the car.


.
 
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Old 08-01-2015, 01:39 PM
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Default Re: How To : Replace the batteries in the alarm module

George, I won't be shipping you the batteries. I just checked them, and they are all 3 pin batteries. Not 4 pin. So, my mistake. Like I stated before, we are foregoing the alarm altogether. One less annoying thing to worry about. Later.
 
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Old 08-01-2015, 02:04 PM
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Default Re: How To : Replace the batteries in the alarm module

Originally Posted by oledoc2u
George, I won't be shipping you the batteries. I just checked them, and they are all 3 pin batteries. Not 4 pin. So, my mistake. Like I stated before, we are foregoing the alarm altogether. One less annoying thing to worry about. Later.
OK, no problem.
 
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Old 08-19-2015, 12:03 PM
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Default Re: How To : Replace the batteries in the alarm module

I installed a new siren and it now chirps but it is very quiet. You have to be within 20-30 feet max to hear the chirp. The siren however is extremely loud.


Is the chirp normally this quiet. It is much quieter than any other car I have ever owned.
 
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Old 08-19-2015, 12:26 PM
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Default Re: How To : Replace the batteries in the alarm module

Yes quite & has a different sound ! I like it ! Other cars use the horn for the sound not ours !!!
 
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Old 02-25-2016, 11:42 AM
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Smile Re: How To : Replace the batteries in the alarm module

The alarm module was removed after the alarm kept going off for no reason at all.
Looked at the alarm module and the batteries in the module was damaged.

My crossfire also had lights coming on the dashboard etc and odd things kept happening and it was this module that caused it.

Running the car without the module and its never been better!
 
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Old 04-09-2016, 02:36 PM
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Default Re: How To: Replace the batteries in the alarm module

#15 is not a good link anymore.
 
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Old 04-09-2016, 03:34 PM
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Default Re: How To: Replace the batteries in the alarm module

That was an old post. I see you are new - this is a great resource for information - just use the search and you will find almost everything!!
alarm siren was:
Mercedes #A 171 820 25 26 subs to A 219 820 32 26
Chrysler #5124443AB
ECS tuning #ES1779675 /2198203226
https://www.ecstuning.com

search ebay or the net or call around for the current local best price.

the new ones all require an 8mm nut that is not included for mounting
And don't forget you need a security TX30 torx for removal (hole in the centre)
I've done a couple and the hardest part is usually getting the wiper arms off - will probably require a small puller.

And you have a great resource and group in your area NWCrossfireClub https://www.facebook.com/profile.php?id=441428485887343

We even met up for the tractor parade at Christmas in Lynden - make sure you join - lots of local help and runs and info on the big July Run CCAA7 in WA

Welcome and Enjoy!
 
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Old 04-10-2016, 01:39 PM
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Default Re: How To: Replace the batteries in the alarm module

Originally Posted by ferdferkle
#15 is not a good link anymore.
Here's one under $100...

Alarm horn for 2004 Mercedes-Benz CLK320 1718202526 Confidently purchase online now - it's quick and easy.
 
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Old 04-12-2016, 10:11 AM
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Default Re: How To: Replace the batteries in the alarm module

Hey guys, that original link to buy the Siren Battery module has been removed. Can someone please let me know what the part number is?
Thanks guys.
 
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Old 04-12-2016, 03:04 PM
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Default Re: How To: Replace the batteries in the alarm module

Originally Posted by GeorgeHirata
Hey guys, that original link to buy the Siren Battery module has been removed. Can someone please let me know what the part number is?
Thanks guys.
LOOK at my post right above yours... p/n 1718202526

 
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Old 04-24-2016, 06:06 PM
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Default Re: How To: Replace the batteries in the alarm module

Thanks ala_xfire
I followed your PDF instructions to get to the alarm module and disconnect
Took about an hour in my driveway
The metric socket set I bought long ago came in very handy

As a general note on repairs, I found that independent Mercedes repair shops are usually willing to work on Crossfires
If anyone needs a reference in the Cincinnati, Ohio area, I can provide one

Thanks
 
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Old 04-24-2016, 06:10 PM
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Default Re: How To: Replace the batteries in the alarm module

You are most welcome !
Adds to my 3 star rating, someday maybe I can be a 5 star member like onehundred80 or mrmiata.
 
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Old 04-25-2016, 12:51 AM
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Default Re: How To: Replace the batteries in the alarm module

Originally Posted by ala_xfire
You are most welcome !
Adds to my 3 star rating, someday maybe I can be a 5 star member like onehundred80 or mrmiata.
Have you noticed we've skipped a few easy ones for you to answer? Trying to help get you up there my friend!
 
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Old 04-26-2016, 03:05 PM
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Default Re: How To: Replace the batteries in the alarm module

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...Deleted...


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Last edited by GraphiteGhost; 10-06-2021 at 12:54 AM.
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Old 02-04-2017, 08:34 AM
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Default Re: How To: Replace the batteries in the alarm module

Originally Posted by GeorgeHirata
Hey guys, that original link to buy the Siren Battery module has been removed. Can someone please let me know what the part number is?
Thanks guys.
BTW, if anyone is interested I have a set of two brand new Original Varta batteries as described in this thread for sale ...$21 shipped.
I purchased the batteries but once I opened my module the PCB was too corruded, need to replace the whole module.
 
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Old 07-15-2019, 06:20 AM
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Default Re: How To : Replace the batteries in the alarm module

Originally Posted by Wolf1608
A lot of people will find their circuit board is covered in green corrosion when they open it up. A lot of the problems with the alarm seem to stem from these batteries going flat and leaking causing corrosion. It needs to be cleaned up before replacing the batteries otherwise some problems will reoccur. I used a different approach on replacing the batteries and instead went for having a separate battery pack mounted remotely from the siren. I did a brief write up on how I did it a while ago.

Matt
Hi I've just started driving my dads crossfire as hes passed away like most of the comments ere the alarm goes off when it's been left for a while the alarm sounds quite crocky almost like there is lack of power so I'm guessing it's the alarm module so I've ordered new batteries to replace them in the module as I havent taken it off yet but my question is if I disconnect the module will everything still work othree than the alarm or will it just be like I've taken fuse 9 out and not be able to lock the car and have the horn disabled
 
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Old 07-15-2019, 07:09 AM
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Default Re: How To: Replace the batteries in the alarm module

You can disconnect the alarm module, no problems.
The chances of being able to replace the alarm batteries are about 1 in 20, usually the old batteries have ruptured and destroyed the PCB.
 
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Old 07-15-2019, 09:24 AM
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Default Re: How To : Replace the batteries in the alarm module

Originally Posted by Adam73bonner
Hi I've just started driving my dads crossfire as hes passed away like most of the comments ere the alarm goes off when it's been left for a while the alarm sounds quite crocky almost like there is lack of power so I'm guessing it's the alarm module so I've ordered new batteries to replace them in the module as I havent taken it off yet but my question is if I disconnect the module will everything still work othree than the alarm or will it just be like I've taken fuse 9 out and not be able to lock the car and have the horn disabled
If your alarm is damaged like you say then I would guess that it is ruined. The trouble you are having is because of the damage done by the leaking batteries.Get a new siren. The cheaper ones just flash the lights and the more expensive ones sound a beeping noise as well as the flashing lights.

The time to replace the batteries is before they leak not after, these batteries are old so replace them or the sirens now, do not wait for them to leak. If you are taking the sirens out to fix them do the job once, not twice. I fixed my siren before it leaked but then decided I wanted a beeping siren.
 
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Old 07-16-2019, 05:12 AM
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Default Re: How To: Replace the batteries in the alarm module

Ok great advise well I'm going to take it off tomorrow and see how things look cheers guys just one thing are these modules worth buying second hand like ebay or am I going down the same road asking for the same trouble would you recommend me buying second hand and before I put it on change the batteries anyway also that way I can look inside after buying and if it looks bad I can send back to the buyer
 


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