Gti aftermarket alarm - Audio, Electrics and Lighting - uk-mkivs

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Gti aftermarket alarm

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#1 Thedadio



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Posted 15 October 2020 - 08:39 PM

Hi guys long time lurker 1st time poster. I understand there are issues with using aftermarket alarms with the mk4 when it comes to oem alarm deactivation. Has anyone found a way to completely deactivate the oem alarm, or enable the aftermarket alarm to activate/deactivate the deadlocks and deactivate the oem alarm on unlock? Don't fancy pressing 2 buttons on 2 remotes to get in the car, thanks

#2 Imagewerx


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Posted 16 October 2020 - 07:05 AM

Difficult but doable.When you open the drivers door you have twenty seconds to turn the ignition on before the alarm goes off even when the OEM system is armed,something you get used to after a short time.

Or you could disconnect the OEM siren and cut the indicator wires coming out of the CCM.The only activity from the original alarm would be a relay inside the CCM clicking away. is an independent Volkswagen enthusiast website owned and operated by VerticalScope Inc. Content on is generated by its users. is not in any way affiliated with Volkswagen AG.