They want kill switches in every vehicle by 2025. Now you know why.
(media.patriots.win)
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Your comment is on the nose. I know from trying to find a tuner to change some parameters on my 17 Wrangler that 2017 is the first year extra steps were involved to unlock the ECM.
I thought the verbiage was a "firewall" for the CAN communications link but i could be wrong.
On Chrysler models it's a physical chip/module in between the DLC and all the vehicle modules that interrupts the "write" capability. In theory, one simply has to put a jumper wire past the module for the wire(s) they want use.
Your car must be a late '17 because it shouldn't have the dedicated security module unless it's an '18.
I never investeigated it further than the SCT website saying the tuner would require an unlocked ECM on 17 and newer wranglers.
By investigating, i meant physically on the Jeep, ive read alot more about this and why it came to be, and i guess it was from when one of the automotive mags published an article about being able to hack a Gra d Cherokee. Kinda scary now that everything is throttle by wire, steer by wire, etc...