Hi,

I'll start from the beginning. I'm getting desperate, any ideas would be
very much appreciated.

A couple of months ago I bought a 1996 406LX with coded anti-start. The code
for the anti-start was forgotten by the previous owner (a friend, I believe
him). We knocked a bit off the price knowing that when the key battery ran
out I would be stuffed for starting the car.

A few weeks ago the key button unlocked the doors but the immobiliser
remained on. I was towed to Peugeot who sent the ECU somewhere to be
reprogrammed. The car came back with a new code which works fine although
they had not set the plip to automatically turn off the immobiliser.

I followed the instructions which i have on a leaflet from peugeot (came
with the car). It has not worked for me - and I've tried a hundred times.
Those intructions were:

Ignition on
Enter code
Press CC
Press Key button
Press secondary key button ( I only have primary key, other instructions i
found online said to press the primary again)
Press CC
Press C1C

The steps are confirmed by bleeps as the leaflet describes.

I also read something vague about turning the ignition on and holding the
button for 15 seconds. This appears to do nothing.

I'm wondering if the plip is broken. This would seem most likely to me. The
battery was tested when the AA came to take me away and it was fine, I don't
know if it could randomly just lose its coding... I don't know enough about
it but could the fact that the ECU has been reprogrammed (or whatever they
did to it) mean my plip thing won't work with it anymore? I'm getting so
sick of putting the code in, and I always forget. So so frustrating.

So, if anyone can help me I'll be extremely grateful!

Thanks for taking the time to read all that.

Ben.