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Originally Posted by mustang67408
I agree with EDDIE
This is 100% correct, the 04 runner immobilizer can be reprogrammed only at the dealer (04 runner is 1 of a few vehicles). You will have to prove ownership.
The ECU WILL NOT HAVE TO BE REPLACED, just 3 new keys cut, 2 master and 1 valet(which you have), Flash program (DEALER ONLY), then your done.
Cost = 3 master keys and labor to do it. We call this re SEED ing the ecu.
We get lots of cars from the AUTO AUCTION, which have no keys. Some we send out ecu's and some we RESEED. 04 runner is a RESEED.
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Hey mustang67408,
Hummm... that's interesting and informative
Did a little
"deeper" digging this morning... made a few phone calls and found out that you and Eddie
are right.
However, there
"IS" still a catch!

To start with, the dealer WON'T do it anyway... period! Made several calls this AM to Toyota dealers (indicating to them what company I was with and why I was asking for the info) and NOT ONE of them said it could be done... the ECU would have to be replaced. That even included the '01 and '02 models, which we KNOW can be done. Matter of fact, I doubt
"they even KNOW about this technology" and even if they do, it's probably very few dealers. Even then, they're NOT going to offer the service anyway since
"they" can't do it!
In any case, we contacted one of our
"paid advisors" (who is just one of many resources we have) for getting accurate info about auto key
"stuff". Matter of fact, he's probably the #1 or #2 locksmith in the nation for Automotive key needs!

And yes... you guys are right... the ECU of the '04 4-Runner
"CAN" be
"reflashed"! BUT... BUT... (and here's the catch I spoke of)
ONLY if the independent locksmith has
UPDATED his
"reflashing" machine/tool with a new 32 bit programming system, which is now in use by Toyota. He
"guess-ti-matted" that there probably wasn't many more than a 100 locksmiths nation-wide with this kind of technology. Obviously, you guys must be in that small group, or at least
"know" someone in that small group of locksmiths. Especially, with mustang67408 being in the AUTO AUCTION business... that
"certainly" stands to good reason. Hey, we all gotta make a living, right...

. Our
"Transponder" key blank manager says, he's probably only spoken to a hand-full of locksmiths who have updated to this 32 bit system.
About the ONLY way to have first-hand knowledge of this type of info is simply by being in the AUTO KEY BUSINESS from its' infancy, such as our
"paid advisor" has been ...
Good info guys. Er..ummm, you guys interested in being on our contact list for advice?

Let's just hope
iriepunk can
"find" one of these
"updated" locksmiths where he is... if... this thing
is on the up-n-up to start with?!
Later,

Dave