19 replies to this topic

[Dan6061]

Recently been having a problem with my immobiliser.
It's the standard Lucas 5AS (with 3TXA fob) on my Rover Mini Sidewalk.

When I'm out of the car, all doors locked, the LED blinks, then before after I changed the fob batery I pressed the right button around 8 times, and the started flashing, then I unlocked the door and pressed the other button a few times, and it turned off. So I could start it.

But now the buttons seem to do nothing. I've had the unit apart and had a look for a false connection, but they all seem fine (my mate's dad checked it.)
Before the alarm used to go off everytime the oor was opened past that 'click' point, but now when the door is wide open the LED just stays on.

I've tried alsorts, and pressing both fob buttons a lot doesn't seem to do much either..

Help?!

[Juju]

Have you got the other fob? If so, try that.

My fob fell apart when I changed the battery yesterday, but I shove the circuit board back in & wiped all the connections & it was fine.

Stupid question, but, have you got the battery in the right way round? Did you discharge all the power when you changed the battery?

Have you reset the fob? (Press unlock at least five times consecutively)

[Dan6061]

I only have th one fob, and the buttons have worn out, So which one is which?

The battery is in the right way. After I changed it, I re-sync'd it and it was working fine.
Then recently I fitted a tacho', and it still worked after that, until a few hours later when it just wouldn't do anything.

I've dosconnected the tacho' and it's still the same, and I've tried taking the batery out of the fob, pressing both buttons a few times, putting the battery back in and trying it, and still nothing when I try and sync' it again.

[Dan6061]

Help!?

[frankiebateman]

My mates emoboliser key did this and the problem wiht his was the little actuvation chip thing fell out it was realy small could be that ? have a check

[Dan6061]

What 'activation chip thing' are you on about?

[frankiebateman]

What 'activation chip thing' are you on about?

i dont know if its a activation chip but its a thing that control the key and without it your pretty much ********d lol but that was on another car so dont know if its the same but if you just take it fob to a shop where you got it from they might tell you

[Dan6061]

Still getting nowhere with it..

Oh, and could someone move this to the SPi/MPi bit please?

[duncancallum]

does your led in the dash light up?

try checking all the fuses especialy if yours is the big fues box type

[Dan6061]

Yes, the LED lights up.
It blinks all the time, then when you either open the door or try to turn the ignition on it stays on (solid light)

[Tom Booth]

Disconnect the battery for half an hour or so and reconect Dan, it resets the ECU and it might even solve your alarm problems.

[Dan6061]

Had the battery disconnected all night, and then re-connected it this morning and tried to sync' it again, but nothing.

[m1n1]

looks like you need a new fob.

Edited by m1n1, 19 February 2008 - 12:53 PM.

[Dan6061]

Damn.
I don't have money to spend though.


If I did buy a new one, would I be able to program it myself? Or would I need to get a specalist to program it to the ECU?

Edited by Dan6061, 19 February 2008 - 12:56 PM.

[Juju]

Did you resynch it with the correct button?
Point the fob towards the car, keyring end in your hand & press the left button at least 5 times.
If you need a new fob then you'll need someone who can talk to ECUs.