BugginKJ wrote:
Sir Sam wrote:
Well I got the build sheet back today, turns out it does have a sentry key, which if the key is really missing is going to cause me problems, on the info page it says "YES" to keys, but the miles were never recorded, and "N/K" (no key) is written on the windshield from when it came in. Hopefully they got the keys later and its included, but incase it doesn't have a key I stopped by the dealer and got a non chipped one made, I won't be able to start it with that key, but I at least will be able to move the thing around untill I can find a DRBIII or a locksmith to reprogram the key.
The thing of it is the sentry key won't stop a smart thief, if you have a key and matching SKIM you can plug those in to the existing SMIK circuit(leaving the one it came with, and that will send the "OK" message on the PCI bus to the ECU to start it, then you just need to crack the tubmler out to start it.
Keeps the honest people honest, and the dumb criminals honest.
I have never delt with one of those keys but as I understand it, it can get pricey. This might be a real dumb question but can you change out the tumbler to an earlier model and have the ECU reprogrammed so it always thinks ok start?
From the factory none of the ECU's are setup for the sentry key system, however the first time the ECU is powered up with a SKIM(sentry key immobilizer module) attached it turns the ECU into a SKIM Ecu.
My buddy had a Jeep that he bought that came without a key and a busted ECU from a collision, after he got it together enough to start it and move it around the shop under its own power he popped in the ECU from his Daily Driver XJ, turns out that the Jeep needed a sentry key and it activated the SKIM option in the ECU, only a good ECU tuner can turn that back off with a new calibration. So he ended up "bricking" the ECU for any XJ other than one with the SKIM.
So to disable the SKIM I would need to remove the RF receiver(I got pics of the KJ unit, so I'm gonna compare them when I get the jeep), and get a non-SKIM ecu, or get my ECU reflashed, I will look into that, GDE is probably the only bet of anyone I could find who could do that.
Otherwise a good locksmith should have the tools to do it as well, and if I can order up some JEEP blanks, get a locksmith to come out to do the reprogramming, and have the cut pattern already cut, I might be able to get this done cheap, I will just have to sit down with the yellowpages and call locksmiths and see who can do what and what price.
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