Quote:
Originally Posted by kyphonii
Whats involved with replacement of the PCM ECU on a 2001 XJ
What year models will work and what are the look outs to replacing the unit
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I would only consider a '98 or later, preferably the same part num that is on the PCM, which will be 56041 and 3 big numbers..you can see it without removing the plastic case
As I understand it, the later models immoboliser works by your ignition switch sending a matching VIN code to the PCM, so that means either the PCM must have the VIN reflashed, or you need the Ignition switch and key from the seller ( I see they are often sold this way in Oz ebay, gumtree etc)
seek clarification on the this, I am not 100% sure
this means your ignition key will no longer match door keys