As was said you are in for a trip to the dealer to program your keys in the
immobilizer system....


"Alpha One" <alphaone@optonline.net> wrote in message
news:21B6e.28$j91.16@fe10.lga...
> He did not use the red key, just tryed to start the car with the regular
> one.
>
> "J." <J@nobody.com> wrote in message
> news:672dnVJKUd7bWsffRVn-qA@comcast.com...
>> "Alpha One" <alphaone@optonline.net> wrote in message
>> news:3by6e.11$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.
>>
>>
>
>