HELP!! Car immobilised after flat battery

[gary_de_tam]

Put car on jump leads but cannot get the immobiliser off ! ie. petrol
pump don't kick in and can hear a slight tapping from battery area.
Red led always lit even when putting plastic key in..
Car does have a tracker but it is not in use.

[T40ORA]

Not experienced this but have you tried locking/arming the immobiliser then unlocking/disarming it?

[gary_de_tam]

How you do that ? LED on the right hand side is always on,
where you put the plastic key

[Barry Ashcroft]

In the slot by the LED

[gary_de_tam]

tried that, it burns all the time. the other red led does not flash
on the centre well side... I can hear a clicking noise so sounds like
something is trying to enable.

[Barry Ashcroft]

Led by the slot is the immob only
Led in the middle signals the alarm is on.

I think your need to do a reset on the immob control box, Not had to do it myself but a simple search should find it in the archives.

alternatly give Karl baker a call 0772 072 3407

http://www.tvruk.tv/contactus.cfm

He's a top top bloke.

[gary_de_tam]

cheers, guess i'll give him a shout in the morning, bit late now.

so now the door button leds are flashing all the time and imm.
led is on all the time..... LCD dash comaplains of 'power supply' !

put it on smart charge now for a bit.

[tail slide]

Barry Ashcroft said:

I think your need to do a reset on the immob control box, Not had to do it myself but a simple search should find it in the archives.

I had this and sorted by disconnecting the 100A fuse which is sealed in a black holder against the far back wall of the passenger footwell, behind the carpet section, about 6" up above the floor; then reconnecting a minute later. Simple as that.

But sounds like your battery charge must also be very low, a trickle charger will take at least 3 days, quicker to charge with a proper charger to your anderson connector for a day (or straight onto the battery if that's corroded)

Edited by tail slide on Tuesday 19th May 22:31

[Barry Ashcroft]

Suggest you get full power in the battery before doing anything more.

[gary_de_tam]

Anyone know how to stop the door leds from flashing or will they
sense a return to sufficient power at some point.

[Dans21dce]

I had this exact same problem last weekend. It turned out to be the fuse between the alternator and the battery. This is the one below the air box. When it goes it means that even if you charge the battery fully you'll probaby find it will go flat very quickly when you attempt to start it. I too had all sorts of error messages such as the power supply one and my door lights flashed, alarm didn't work, windows would go down but not up!...very strange and worrying at the time but all fixed with a part that costs 60p!

[tail slide]

Dans21dce said:

I had this exact same problem last weekend. It turned out to be the fuse between the alternator and the battery. This is the one below the air box. When it goes it means that even if you charge the battery fully you'll probaby find it will go flat very quickly when you attempt to start it. I too had all sorts of error messages such as the power supply one and my door lights flashed, alarm didn't work, windows would go down but not up!...very strange and worrying at the time but all fixed with a part that costs 60p!

That damn 100A fuse again! Best to replace with 125A one from TVR Power; Jason (STR8SIX) told me yesterday that T350's have always been more prone to melting this than other TVRs, not yet sure of exact cause.

[terrapin]

Hi, I had same problem after leaving car for a month with no trickle charger.
Recharge battery, then check the handbook fuse diagram, pull the fuse{s] for the immobiliser then push them back in - you should hear the fuel pump start now.
Sorry I don't have the fuse numbers - at work in Russia.

[need4power]

I had the same thing happen to me. Dont try changing fuses or anything else till you go into the passenger footwell.

Remove the carpeted fiberglass board, to reveal the immobiliser wiring. The actual wire is high inside the footwell.

Now it is a matter of disconnecting and reconnecting to reset the immobiliser.

There is a small plug, try that first. If that does not work disconnect the bigger plug, it is quite tricky to get to, but its possible.


This should reset the immobiliser, hope this helps you

[gary_de_tam]

Hi all;

Thanks for all the tips, back up and running now... just trickle charging after
a run round the block. Put it on jumpstart and before cranking, reset the immobiliser,
popped the fuse out/in which did the trick, short blast from the alarm though.

gt.

[gary_de_tam]

but still have a regular ticking, as if something is resetting...

[NickT]

I had the same problem after getting a flat battery and trying to jump start / charge it back into life. My immobiliser light just stayed off in my case rather than on but it was not responding to the key or the dongle and when turning the ignition there was no fuel pump whir. A quick search through PH and a look in the Graham's Sagaris workshop manual sorted it out. I didn't fancy disconnecting the battery so followed Graham's advice to go into the passenger footwell and disconnect the immobiliser controller unit and re-connect it. All sorted and been for a blast in the car this afternoon

[ShuggieTVR]

Can't reset my immobiliser on T350C by disconnecting fuse on footwell, door buttons still flash and ticking continues. Lots of wiring, disconnected everything I could see and reach, where are the plugs around the immobiliser control unit (photo would be ideal ;-)? Also, grateful if someone can email me as to how to get into the boot as need to get to the accumate plug, just in case the battery doesn't go flat, been 18 hours since it wouldn't start? Cheers, ShuggieTVR

[ninetynine]

disconect battery for 60 secs this usually does the trick but dont leave keys in car as when you reconnect it will lock and raise windows

[Bikali]

Thanks guys very helpful, immobiliser light was off and disconnecting/reconnecting the 2 connectors did the trick. The wiring in the footwell was interesting the immobiliser was held in by the carpet ... Now sorted
Thanks