 | Home > Technical > 300tdi alarm/immobiliser |
 
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| Mining Subsidence Stu Member Since: 06 Mar 2024 Location: Cornwall Posts: 23   
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Mine did this random thing where I decided to get a 200 after, because of the fking alarm/immobiliser.
The 10A fuse on the right is the horn. You take this out and it stops going AAAAAAAAAAAAAAAAAA Mine would do something weird where it would blow the 5A fuse. I put a 7.5A one in and it was fine after. My problem was that the starter would randomly stop working. I wired the immobiliser out by looking at the "spider thing" on ebay. The fatter wires are the starter ones! After I had removed the immobiliser, it still had a mind of it's own. The alarm is like it's brain. Everything goes to it. The sensor thing above your head and the door switches. There's the bonnet switch as well. Get the 10A fuse out to shut it up for a start. Sounds fobby to me. NEVER TOUCH THE BUTTONS!!!!! I'd get the link out plug to replace the immobiliser. The thing is just a magic box of sht. |
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17th Nov 2024 1:55pm |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2048
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Have a chat with Paul Brown of Technozen, they test and if required repair 10AS units
https://www.technozen-electronics.co.uk/la...-services/ |
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17th Nov 2024 3:25pm |
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| anotherrick Member Since: 02 Feb 2024 Location: Lancashire Posts: 30  
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Cheers for the replies guys.
After my original post I went back out to have another look at what was going on. Tried to start it and same scenario as before. So decided to disconnect the battery, I then noticed that the immobiliser box had been disconnected/removed. Just 4 bolts where it used to be. Whilst I was at it I also changed the battery in the fob. Went back out a couple of hours later and reconnected the battery, there were a couple of clicks n whizzy noises! Went to start the car and alarm sound with horn, flashing lights, immobiliser icon on dash ect. Pressed the button on the fob and it was disarmed and I was able to start and drive. But now I'm more confused. But whilst it's working I'll go with that haha and investigate more when it's a bit warmer. |
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18th Nov 2024 3:16pm |
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| anotherrick Member Since: 02 Feb 2024 Location: Lancashire Posts: 30
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And I'm back to square one haha.
Time to do a bit of digging and see if I can remove the whole system. |
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22nd Nov 2024 1:28pm |
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| Mining Subsidence Stu Member Since: 06 Mar 2024 Location: Cornwall Posts: 23
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This is a maddening nightmare. As I wrote above, it started playing up and I removed the immobiliser. The problem seemed to be the alarm. I made sure never to press the buttons on the key fob EVER. It was an alarm thing. If you look at the circuit diagram, the alarm is like the brain. Everything is connected to it.
Rumour has it there is an electrical socket (OBD) where you can turn the alarm off for export. They (export) are all fitted with the immobiliser and alarm, but they are switched off. No fob, no nothing. I loved my 300, but the "problem" was a nightmare. So I got a 200 and have some proper headlight gremlins instead (MOT due). It did some real magic  . Like who knows what is going to happen. It won't start, it's blown a fuse. Replace the fuse then it does something else, like the light comes on and it won't start.
It was getting to the point where I would have 2 switches for the starter and pump solenoid. |
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28th Dec 2024 6:44pm |
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