He did not use the red key, just tryed to start the car with the regular
one.

"J." <J@nobody.com> wrote in message
news:672dnVJKUd7bWsffRVn-qA@comcast.com...
> "Alpha One" <alphaone@optonline.net> wrote in message
> news:3by6e.11$Tg7.7@fe10.lga...
>> Can the dealer make a new key if you bring to them the car's key and the
> VIN
>> of the car from which the new ECM was removed? This way maybe they could
>> make the key and get the code for the replacing ECU.
>>
>>
> According to the Service Manual for my 99 lude, the immobilizer can store
> up
> to 5 key
> codes. When learning a new key, the dealer uses their PGM Tester to
> rewrite
> the
> immobilizer and needs all the coded keys including the red LEARNING key.
> Furthermore, "if someone tries to start the engine with the learning key,
> all master and
> valet keys must be relearned." Maybe that's why the original ECM doesn't
> start
> the car now. I saw that warning when I bought the car, never opened the
> package,
> and filed that key safely away.
>
> The last note about substituting a known good ECM is that it must be
> rewritten
> with the PGM Tester. Since I've never had this done, I'm not sure if the
> original
> and substitute red LEARNING keys are needed for this procedure or if
> they're
> generic.
>
> Bottom line, it sounds like you will be able to reuse your expensive
> original keys
> with help from the dealer.
>
>