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Faulty immobiliser?


Roguefysh
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Hi all,

I was taking the car (Mk2 Focus Zetec Climate 1.6) in today for work on the brakes, but when I tried to start it the dash lit up, the immobiliser light flashed rapidly, but it didn't try to turn over. I tried the spare (hard-coded) key and it started straight away. On the way there I noticed some serious lag in 3rd gear, then the dash died and came back to life about a mile later. The lag was there throughout. The garage rang this afternoon to say they couldn't get the car started, same symptoms as this morning. I left them with the hard-coded key. I'm not too worried about the dash, my mk1.5 had very similar issues, so I can probably sort that myself, but the immobiliser is a problem. Does the mk 2 have any common issues in this area that I should suspect first? I'd rather not ask a garage to investigate an unknown issue, that's just a licence to print money. Thanks in advance.

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45 minutes ago, TomsFocus said:

The immobiliser on the Mk2 goes through the dash cluster.  Very common fault, solder joints dry out and crack giving poor connections.

The more I hear people having this issue, the more depressed I get that mine may also follow trend. Hopefully, they used the good solder on mine, and not the dolphin friendly one 😁

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1 hour ago, StephenFord said:

Hopefully, they used the good solder on mine

You can't beat some good old 60/40 Lead tin solder with real rosin flux. You get a proper joint that lasts forever and the lead and rosin flux are only a bit toxic. I can't see what all the fuss is about 🤣

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10 minutes ago, unofix said:

...the lead and rosin flux are only a bit toxic. I can't see what all the fuss is about 🤣

Surely they are only toxic if you eat them? Whose going to do that?? LOL

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