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 Posted: Jan 4, 2023 03:35PM
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That's the point of the immobilizer. In Europe car thefts are on such a scale, cars that don't have features like this pay a heavy insurance penalty. Some of the SPi ECUs are coded to the immobilizer module (as are all the MPi ECUs.) If so, the car will not run without the immobilizer in place. I believe 95 and later was when this change happened.

For the SPi, if you can find a compatible early non-coded ECU then you can use the car without the immobilizer module, then you just need to deactivate the alarm. If you can't, you have to find a service that can disable the immobilizer code in the ECU. Naturally thieves want to do the same thing so you may have to jump through some hoops to get that done, but they exist (or at least they used to.)

Mostly likely you have a defective fob, could just have cracked solder joints or defective switches. A replacement fob would solve that problem, but you again need to have the fob code matched to the immobilizer. If you're in the UK there are a number of places that can do that. I don't know if any places in North America offer that service.

In the worst case you can send the immobilizer to the UK to have the coding done. I have done that myself, and it solved the periodic failures of the fob to disarm the immobilizer.


DLY
 Posted: Jan 4, 2023 03:19PM
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Know anywhere I can get a wiring diagram for it? A good thief in London would get frustrated and walk away to an easier target. 

 Posted: Jan 4, 2023 06:47AM
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might ask a good Thief. in london.?.  I think the SPI can be disconnected but NOT the MPIs. I am told.. by my partner in crime..  PHD.

 Posted: Jan 4, 2023 04:51AM
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new switches installed in the fob, several new batteries tried before that, no change. I'm really done with the security system. Just want a wiring diagram so I can eliminate it from the car.

 Posted: Jan 3, 2023 03:18AM
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CA
Quote:
Originally Posted by PhatHeadDonnie
try new battery.. in the key FOB??
... and clean the battery contacts in the fob and make sure there is a strong, tight connection with the battery terminals.

.

"Hang on a minute lads....I've got a great idea."

 Posted: Jan 2, 2023 01:09PM
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try new battery.. in the key FOB??

 Posted: Jan 2, 2023 09:24AM
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SPI, Seems to work better the more I use it, problem is if you take the battery cable off it erases any memory. It took a month this summer for it to work reasonably well (I was driving every 2-3 days). 2 or 3 hits on the button and I could get the security system to unlock. Then it got worse as the fall weather came and I didn't use it as much. It has been sitting for a month without driving and took 30 or 40 button pushes to get it to unlock. Seems to be two stages of unlock. The first stage makes the light blink really fast (which usually only takes a press or two), then I have to hit the other button or go back and forth a bunch of times to get the light to go out, then it will start. Very annoying and unpredictable. I really just want the system gone.  Anytime I shut it off, it sets the system after a minute
or if I remove the key the system arms immediately.  

 Posted: Dec 31, 2022 10:46AM
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andyzot.. is your mini SPI or MPI?/  I contacted www.remotealarms.co.uk in england and they re programmed by key FOB for both my SPI mini and my MGF... Later PHD.. ps. cost is about 200  quid..

 Posted: Dec 31, 2022 07:10AM
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The security system on my Mini Sidewalk edition is wanky. Sometimes I have to push the fob button 25 or 30 times till it shuts the system down so I can start it. I've had the fob rebuilt and it is the same. Is there any way to delete the security system? From what I've seen it ties directly into the ECM. If anyone has a wiring diagram I think I could figure it out. The security system re-arms after I shut the car off, even when the key is still in it. I look like an idiot if I go to the store or get gas and I can't get the flippin security system to un-arm. I'm afraid one day it will stop working all together and I will have a 1,500lb. paper weight.