991 Alarm Siren Replacement
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7th Gear
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991 Alarm Siren Replacement
The alarm siren on my 991.1 2012 died, so as others have suggested on here I replaced it with a generic VW part 1K0951605C (the original was 1K8951605B).
With the new part when I start the engine the immobiliser kicks in and the engine cuts out and gives a fault code P0513-Incorrect immobiliser code.
if I disconnect the new alarm siren the the car starts and doesn’t cut out.
I have tried two new alarm sirens and they both give the same identical issues.
Has anyone experienced anything similar and resolved it?
The original problem with the old alarm was that the alarms would go off intermittently which I believe is a symptom of the old internal battery no longer holding charge.
With the new part when I start the engine the immobiliser kicks in and the engine cuts out and gives a fault code P0513-Incorrect immobiliser code.
if I disconnect the new alarm siren the the car starts and doesn’t cut out.
I have tried two new alarm sirens and they both give the same identical issues.
Has anyone experienced anything similar and resolved it?
The original problem with the old alarm was that the alarms would go off intermittently which I believe is a symptom of the old internal battery no longer holding charge.
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7th Gear
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RL Community Team
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I don't remember but it was original, so assuming it was 605B.
I bought 2, the first one did not work (did not chirp after install), but have had no issues with the second one I purchased.
I bought 2, the first one did not work (did not chirp after install), but have had no issues with the second one I purchased.
Last edited by Porsche_nuts; Feb 8, 2025 at 12:25 PM.
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There is a difference between 1) an aftermarket component that is honestly sold as an aftermarket component, and 2) an aftermarket component presenting itself inaccurately to be the original component.
That listing = a counterfeit component. It’s not an aftermarket component. It’s a counterfeit product. It says made in Italy, when it is not. It’s made in China and says made in Italy.. It ships from China. It would make no sense at that price point for them to bulk order these components from Italy, have them warehoused in China, then ship them to the US to you for $14 bucks. Not possible. If they are doing that, I would not be shocked that the software and hardware inside doesn’t work properly either... .
To each his own but I wouldn’t buy it. If it was “made in China” and had another Chinese brand name on it, I’d try it -- but when they are deliberately trying to be deceptive -- nah.
Food for thought.
Perhaps there are others on Aliexpress that are actual aftermarket parts.
That listing = a counterfeit component. It’s not an aftermarket component. It’s a counterfeit product. It says made in Italy, when it is not. It’s made in China and says made in Italy.. It ships from China. It would make no sense at that price point for them to bulk order these components from Italy, have them warehoused in China, then ship them to the US to you for $14 bucks. Not possible. If they are doing that, I would not be shocked that the software and hardware inside doesn’t work properly either... .
To each his own but I wouldn’t buy it. If it was “made in China” and had another Chinese brand name on it, I’d try it -- but when they are deliberately trying to be deceptive -- nah.
Food for thought.
Perhaps there are others on Aliexpress that are actual aftermarket parts.
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RL Community Team
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From: New York
There is a difference between 1) an aftermarket component that is honestly sold as an aftermarket component, and 2) an aftermarket component presenting itself inaccurately to be the original component.
That listing = a counterfeit component. It’s not an aftermarket component. It’s a counterfeit product. It says made in Italy, when it is not. It’s made in China and says made in Italy.. It ships from China. It would make no sense at that price point for them to bulk order these components from Italy, have them warehoused in China, then ship them to the US to you for $14 bucks. Not possible. If they are doing that, I would not be shocked that the software and hardware inside doesn’t work properly either... .
To each his own but I wouldn’t buy it. If it was “made in China” and had another Chinese brand name on it, I’d try it -- but when they are deliberately trying to be deceptive -- nah.
Food for thought.
Perhaps there are others on Aliexpress that are actual aftermarket parts.
That listing = a counterfeit component. It’s not an aftermarket component. It’s a counterfeit product. It says made in Italy, when it is not. It’s made in China and says made in Italy.. It ships from China. It would make no sense at that price point for them to bulk order these components from Italy, have them warehoused in China, then ship them to the US to you for $14 bucks. Not possible. If they are doing that, I would not be shocked that the software and hardware inside doesn’t work properly either... .
To each his own but I wouldn’t buy it. If it was “made in China” and had another Chinese brand name on it, I’d try it -- but when they are deliberately trying to be deceptive -- nah.
Food for thought.
Perhaps there are others on Aliexpress that are actual aftermarket parts.
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Thread Starter
7th Gear
Joined: Mar 2022
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I think I'll try a new model 1K0951605F siren and see if that resolves the issue. https://www.aliexpress.com/item/1005007413489598.html?