Fuel Shut off system

T

teamemmenracing

Senior member
 West of edinburgh
Anyone got any experience with this ..............

Looking at my nice shiny red zed sitting outside, I cant help wonder how many other people are looking at it and considering it's nickability ......... :D
Its fitted with all the usual anti theft stuff but ............

years ago, a friend of mine had his 3 ltre capri nicked on a regular basis ....... he fitted a fuel cut off switch, which worked a treat ...... he even used to joke about it, whenever he came back to find an empty space where the car used to be, he'd just look down the road and see where it had run out of juice. Simple and effective.
 
I used to have a 2-point immobiliser on my e34 M5 - covering fuel pump & starter motor.

Don't know what the Z4 immobiliser covers.
 
teamemmenracing said:
years ago, a friend of mine had his 3 ltre capri nicked on a regular basis ....... he fitted a fuel cut off switch, which worked a treat ...... he even used to joke about it, whenever he came back to find an empty space where the car used to be, he'd just look down the road and see where it had run out of juice. Simple and effective.
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:rofl: makes it sound almost normal!
 
The immobiliser system controls the starter and ECU/DME. The DME disables both spark and fuel until it gets proper rolling code from immobiliser. Beforehand, the immobiliser must get proper rolling code from transponder in key to allow starter and communicate with DME. Key must get password from immobiliser before it even sends rolling code. I see no way for a common thief to beat this system. The communications are fairly secure with passwords and rolling codes. The modules cannot be exchanged from another car. The injectors and coils are DME controlled and cannot be 'hot wired'. The weakest point for attack would be for the thief to somehow emulate having a new key and initialise it to the car. It would have to mechanically operate the ignition switch also, as that is how the password and rolling code exchange is initialised.

Yup, un-nickable. Adding a cut-off switch would be like using some rope when you already have belt and braces.
 
Well thats re-assuring ........
I was reading that other thread about a stolen zed on the bbc, must have got hold of the keys then........
 
this raises the question about keys, where do you leave them?

do you take them to bed with you or would you prefer to leave them downstairs?

if someone is hell bent on nicking your zed are you better off leaving the keys accessible or would you prefer to them to enter your bedroom and you fight for your life/zed?
 
The vast majority of car thefts now are with keys taken. The move in improved security has, inadvertantly, put the owner at more personal risk as scrotes need to physically confront you or enter your property 'just' to steal your car....it's happened recently to other Alpina owners. I love both my Alpina's, but wouldn't fight a thief for the keys; expecially in a car-jacking situation. They may be rare, but I'm sure we could rustle-up replacements if they were taken.

Consequently, although we live in a very low-crime area, we still take great care that the cars aren't 'seen' around the house and hence draw less attention than may otherwise be the case. They get plenty of that out on the road. Luckily for us, our garage isn't visible from the road...and when not in use, both cars are locked away The keys, however, are far-more readily accessible than we are to any dark-minded rat, whilst complying with insurance requirements in all ways.

Oh, and fuel shut-off valve? Only really works if it's something that you cannot over-ride with the key. eg a touch-pad or hidden switch you need to press on start-up. If that's the case, then why not? Then if they do get the keys, they won't get far and you can laugh at them whilst dialling 999 as they run away from your motor with its dead engine :P
 
bcworkz said:
The immobiliser system controls the starter and ECU/DME. The DME disables both spark and fuel until it gets proper rolling code from immobiliser. Beforehand, the immobiliser must get proper rolling code from transponder in key to allow starter and communicate with DME. Key must get password from immobiliser before it even sends rolling code. I see no way for a common thief to beat this system. The communications are fairly secure with passwords and rolling codes. The modules cannot be exchanged from another car. The injectors and coils are DME controlled and cannot be 'hot wired'. The weakest point for attack would be for the thief to somehow emulate having a new key and initialise it to the car. It would have to mechanically operate the ignition switch also, as that is how the password and rolling code exchange is initialised.

Yup, un-nickable. Adding a cut-off switch would be like using some rope when you already have belt and braces.
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Is this correct for all zeds? Or, does this vary with model/age??
 
Taz x said:
if someone is hell bent on nicking your zed are you better off leaving the keys accessible or would you prefer to them to enter your bedroom and you fight for your life/zed?
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Well you see ..... there's the problem.
Over the years I have discovered a serious flaw in my makeup ...... and that is that a small part of me is mental.
I tend to get utra over protective of anything that's mine in even the most serious of situations ..........
It may have something to do with having spent a lot of my working life in africa and the middle east ..... or "shitholes" as they are more commonly known.
Just recently (well 2 years ago) a young coloured chappie about 5ft 11in and reasonably "tooled up" decided my computer bag was better off in his possession than mine.
As the old bill carted him off all I can remember is him screaming "that old c**t is F**ckin mental" ...... which made me realise that maybe I really do possess the mental gene.....

In answer to the question, would I prefer to fight for my life to stop someone stealing the motor....... sadly I suspect the answer would be yes.

btw I have unopened in a box, a deal I bought a few years ago - its called an anti carjacking system - basicaly you have a credit card sized deal in your pocket/wallet, and you have to be within about 50 mts of the car for the ignition to be operable. if someone takes the car, even with the keys, they get about 200 mts before it all shuts down. Its supposed to give you time to leg it......
If I can find a decent auto electrician, I might just get it fitted to the zed ....... will keep you posted.
 
Adamski said:
bcworkz said:
The immobiliser system controls the starter and ECU/DME. The DME disables both spark and fuel until it gets proper rolling code from immobiliser. ... blah blah
Click to expand...
Is this correct for all zeds? Or, does this vary with model/age??
Click to expand...
It's generically true for all BMWs with immobiliser systems, but it has gone through several generations, for example, early systems (pre Z3) did not use rolling codes and the DME communication was not secured. I'm not actually sure exactly which generation(s?) Zeds have, but since I left out a lot of specific detail, it should apply.
 
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