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{cross posted at Yahoo Prius 2G and PriusChat}

This is of particular importance to anyone who will have this TSB
performed and has the SKS (Smart Key System:aka/previously SE/SS).

To start you may want to read this PriusChat thread on my experience:

http://www.priuschat.com/forums/viewtopic.php?t=4427

In short, do NOT TURN OFF THE SKS when you have the TSB performed. It
will cause the Smart Keys to lose registration with the SKS ECU in
your Prius. As you may or may not know, if you do not have at least
one registered FOB you can not program any other FOBs to the car. If
that situation occurs the entire SKS ECU must be replaced along with a
new FOB that is registered to that ECU.

Mine will be replaced, allegedly, next week along with new FOBs.
Fortunately this is just a minor inconvenience for me, but hopefully
others will avoid it. I'm concerned it could be a problem as many
service departments are insisting on keeping your Prius at the
dealer's lot while they wait for the Combination Meter/computer to
come in. Almost everyone is reporting delays of 10-14 days. As you
know, if you leave the SKS on for that long it can completely drain
the 12v battery. I was in a similar situation knowing my car would be
left for at least a week so thought it prudent to turn off the
SKS...wrong move as it turns out. There is NOTHING in the TSB that
warns of this problem.

I don't know the best solution for those forced to leave your cars for
that long. Maybe you can run by every 7 days and insist that they let
you start it up. Maybe, if you know the service tech well, you can
turn it off with a note on the dash/wheel to be sure to turn it back
on before starting the TSB. In any case, you may need to make your
service tech and or advisor aware of this problem before you to are
without SE and SS--a torture worse than death!! ;-)

--evan
 

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efusco said:
As you may or may not know, if you do not have at least
one registered FOB you can not program any other FOBs to the car. If
that situation occurs the entire SKS ECU must be replaced along with a
new FOB that is registered to that ECU.
Having just re-read your post, my attachment wont help you, but could help others with programming a SKS.

HTML guide to programming SKS system taken from the German Service manuals traslated to English in a zip file.
 
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