bad to worse,.... immobiliser fooked

[davido140]

after my flat battery japery the bloody immobiliser now refuses to disable. Solid red light next to the pod and the little fob thingies dont seem to work.

I had a little search and the general concensus appears to be disconnect the battery for a bit to reset the alarm.

Is this the right course of action to take?

cheers

DP

[VARLEYHYD]

davido140 said:

after my flat battery japery the bloody immobiliser now refuses to disable. Solid red light next to the pod and the little fob thingies dont seem to work.

I had a little search and the general concensus appears to be disconnect the battery for a bit to reset the alarm.

Is this the right course of action to take?

cheers

DP

Yep worked for me, but when reconnecting the battery make sure you attach the positive first to avoid damaging the ECU.

G

[davido140]

thanks, just need to work out how to take the bonnet off now!

[davido140]

phew, thank god for the search function, the battery lives in the passengers side wheel arch!!

Now I need to work out a decent jacking point!!

[VARLEYHYD]

davido140 said:

phew, thank god for the search function, the battery lives in the passengers side wheel arch!!

Now I need to work out a decent jacking point!!

here we go



and then



G

[ec1 eex]

VARLEYHYD said:

Yep worked for me, but when reconnecting the battery make sure you attach the positive first to avoid damaging the ECU.
G

I don't understand what difference it would make which terminal you connect first. Can you explain why connecting the negative first could possibly damage the ECU?

I'm not trying to be funny - I'm trying to learn something

Edited by ec1 eex on Saturday 22 December 15:57

[VARLEYHYD]

ec1 eex said:

VARLEYHYD said:

Yep worked for me, but when reconnecting the battery make sure you attach the positive first to avoid damaging the ECU.
G

I don't understand what difference it would make which terminal you connect first. Can you explain why connecting the negative first could possibly damage the ECU?
I'm not trying to be funny - I'm trying to learn something

Read this somewhere so that's what I did

G

[K3EFH]

Instead of disconnecting the battery take fuse 29 (I think) out for a couple of seconds. Works the same as diconnecting the battery.

This happened to me after a flat battery and it does work.

[MarkoTVR]

ec1 eex said:

I don't understand what difference it would make which terminal you connect first. Can you explain why connecting the negative first could possibly damage the ECU?

I'm not trying to be funny - I'm trying to learn something

Edited by ec1 eex on Saturday 22 December 15:57

You won't cause any short circuits if you catch metallic car components when attaching the positive connector with the negative disconnnected. Do it the other way round and you would, as the negative terminal is the 'live' side for want of better description.

I assume the short would create some sort of spike that could damage the ECU via the earthing points.......of course, that could be a load of turkey-fuelled bcks.

Edited by MarkoTVR on Thursday 27th December 11:53

[lowest]

I've got just the same problem on my Tuscan 2, does fuse 29 do the same job on the Tuscan 2?

[NCE 61]

lowest said:

I've got just the same problem on my Tuscan 2, does fuse 29 do the same job on the Tuscan 2?

Fuse 29 is the alarm/imobliser battery supply on the Tuscan 2 so would be the same.

[lowest]

Hummm fuse 29 removal didn't sort it out, battery to be disconnected next!!