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Home > Technical > Defender 90 TD5 Alarm - Cobra / AS10?

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andyg0141

Member Since: 25 Feb 2022
Location: Glasgow
Posts: 28

Defender 90 TD5 Alarm - Cobra / AS10?

Hi All,

I have just bought my first Defender 90 (1999 TD5) and am trying to determine whether it has an alarm or not... It came with a Cobra fob (doesnt work even with new battery) and has a Cobra siren under the bonnet; but I cant find a Cobra alarm control box anywhere. I have found the AS10 Land Rover alarm box though - is it likely the Cobra fob / siren are linked to these or should I keep hunting for the Cobra control box?

Thanks,

Andy

25th Feb 2022 2:53pm

steveww

Member Since: 05 Jan 2022
Location: Uppingham
Posts: 537

2015 Defender 110 Puma 2.2 XS CSW Bronze Green

The Cobra box is most likely just an extra immobiliser.

https://cobracartech.co.uk/alarms-immobili...liser.html

25th Feb 2022 3:50pm

andyg0141

Member Since: 25 Feb 2022
Location: Glasgow
Posts: 28

Thanks. Would the AS10 be disabled when they fitted the Cobra? What I’m trying to get to is should I focus on getting the Cobra sorted and assume the AS10 is obsolete? Thanks

27th Feb 2022 10:21am

steveww

Member Since: 05 Jan 2022
Location: Uppingham
Posts: 537

No idea. You’ll have to all Time Team on it and do an investigation.

27th Feb 2022 11:17am

SteveG

Member Since: 29 Nov 2011
Location: Norfolk
Posts: 656

All Defenders shipped with 10AS’sThere are two versions, one simple and an ‘enhanced’ version with drivers for central door locking, battery back up option for alarm etc.

If you want an alarm, you can order the fobs online and activate the alarm and immobiliser functions of the 10AS. If you want CDL, you can buy the upgraded unit and swap out with yours and fit CDL units in the doors. There’s also an interior volumetric sensor you can too if you wanted.

For your Cobra unit, if you can’t find it I assume the main unit has been removed, however, you could trace back from siren and see if it’s connected to anything.

Last edited by SteveG on 28th Feb 2022 8:36am. Edited 1 time in total

27th Feb 2022 12:39pm

andyg0141

Member Since: 25 Feb 2022
Location: Glasgow
Posts: 28

Thanks for the info. I traced it back to the wiring at the AS10 unit and, having Googled the model of Cobra, found that it doesn't have a separate control unit; everything is build in to the siren (my fault for assuming it would have one).

Looks as though both are wired up so will order a new Cobra fob and see about coding it. Don't have Nanocom for checking the AS10 but will give my Launch diagnostics a go and see if I can see anything with it.

27th Feb 2022 9:23pm

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