Thread: Standalone TD5 / imobiliser bypass options?

Originally Posted by Discosux

Hi guys,

Looking to fit something like this to the TD5
TD5 IMMOBILISER BYPASS

Unfortunately these guys don't export due to pommy red tape issues.

Has anyone fitted something like this? are there other options?
I'd rather not go down the setting up a freight forwarding drop shipping account thing.

Cheers

I’ve looked at this device a couple of times and are not convinced enough that it is worth having for what is a rare occurrence and more especially because the seller doesn’t have a solution to silence the alarm - okay you can open the door and start the engine but then what about the alarm continuing to sound and he mentions that briefly . You need a diagnostic tool to disable the alarm.

The alternative for me is pre planning, meaning that the immobiliser can be selectively disabled (with a diagnostic tool) for those times when we venture far far away from help, like when we hit the High Country tracks on long week ends or away for weeks crossing the Simpson Desert or heading up to the Cape.

I initially wanted one too, but when you think though ……

That device is an expensive pack of excrements IMO. Those who made it dont even know that when a D2 gets immobilised the BCU disables the starting circuit too beside cutting the security signal from the ECM and as Onebob said even if you are able to start the engine(which i doubt that will cranck once immobilised) the alarm will keep yelling with the running engine too as there's nothing in that device to disable the BCU's alarm/immobilising protocol, all it does according to it's description is to emulate the security code sent to the ECM while the D2's immobiliser is more complex than that. Also to make that thing work you need a nanocom or similar to make the ECU learn that fake security code it sents while if you already have nanocom you can simply set the alarm to "always disarm with key" and disable the passive immobliser or if you want no immobiliser at all set the alarm to "not fitted" then it will not be immobilised whatsoever.

Originally Posted by onebob

I’ve looked at this device a couple of times and are not convinced enough that it is worth having for what is a rare occurrence and more especially because the seller doesn’t have a solution to silence the alarm - okay you can open the door and start the engine but then what about the alarm continuing to sound and he mentions that briefly . You need a diagnostic tool to disable the alarm.

The alternative for me is pre planning, meaning that the immobiliser can be selectively disabled (with a diagnostic tool) for those times when we venture far far away from help, like when we hit the High Country tracks on long week ends or away for weeks crossing the Simpson Desert or heading up to the Cape.

I initially wanted one too, but when you think though ……

Fair call, it's probably easier to just pack a spare BCU.
I'll be spending the next few years doing the Cape area.
If it's a small part and easy and its failure can stop the TD5 <- I'm carrying a spare or have a bypass option

Surprisingly, its a pretty short list

Originally Posted by sierrafery

That device is an expensive pack of excrements IMO. Those who made it dont even know that when a D2 gets immobilised the BCU disables the starting circuit too beside cutting the security signal from the ECM and as Onebob said even if you are able to start the engine(which i doubt that will cranck once immobilised) the alarm will keep yelling with the running engine too as there's nothing in that device to disable the BCU's alarm/immobilising protocol, all it does according to it's description is to emulate the security code sent to the ECM while the D2's immobiliser is more complex than that. Also to make that thing work you need a nanocom or similar to make the ECU learn that fake security code it sents while if you already have nanocom you can simply set the alarm to "always disarm with key" and disable the passive immobliser or if you want no immobiliser at all set the alarm to "not fitted" then it will not be immobilised whatsoever.

Hi mate, I forgot about the BCU controlling the starter.
To be fair to these guys they're mainly selling it for engine conversions Etc.
not really as a BCU bypass method for a disco.

set the alarm to "always disarm with key" and disable the passive immobliser or if you want no immobiliser at all set the alarm to "not fitted" then it will not be immobilised whatsoever

This is pretty much how I've set it already, but I don't think it will start without the BCU code? Ie total BCU failure (flooded is my main concern) - i still cant push start or jump the starter solenoid.
(I haven't tried though)

If it's set to "alarm not fitted" the ECU should go to "no code" mode so it doesnt expect any security signal to start

Originally Posted by sierrafery

If it's set to "alarm not fitted" the ECU should go to "no code" mode so it doesnt expect any security signal to start

For others following the thread who have a HAWKEYE -I have Version EN (3.0) 04/2014 and directions of where to go for programming the immobiliser are on P.70 of the manual, and directions for where to go for programming of these items Alarm / Passive / EKA are on P.122.

NOTE: I have not connected the HAWKEYE and ventured into the BCU for a look around in those respective menus and sub-menus so I cannot advise results and or conflicts arising from tinkering in there.

SIERRAFERY maybe like to offer some advice from his experience.

No "conflicts" with Hawkeye. In the BCU - Programming - Alarm there are only two options "fitted" and "not fitted"(or something very close to these)

Originally Posted by sierrafery

No "conflicts" with Hawkeye. In the BCU - Programming - Alarm there are only two options "fitted" and "not fitted"(or something very close to these)

Still doesn't make sense though, why would that "stand alone" device even exist if it was that easy?

I noticed a few UK tuners are offering BCU delete as an option <- they require the ECU to be sent in for remap / flash, not the BCU.
AFAIK altering the alarm settings is all done with the BCU, nothing you can change in that module will change the ECU's requirement for a code. I might have missed something with the nanocom, but don't think there's an alarm option in the ECU, apart from shipping / non robust mode - but I don't think this is the answer.

It's the middle of the night down here, I'll give it a go in the morning
I'll confirm the BCU settings are set for no alarm / immobiliser etc and then unplug the BCU. If the fuel pump starts up on ignition, I'll jump the starter and see what happens. If the fuel pump doesn't start - probably no point going further

BTW its a manual TD5. no idea how this plays out with an Auto

Cheers mate