After reading a lot about ECU Imobilizer flashing I have a question:

I'm thinking about getting an 02 ECU for my 01 and I know the new ECU Imobilizer will have to be "flashed" by the dealer. The question is can I use one of my keys for the original ECU, and have my other key for the new ECU, and be able to switch the ECUs back and forth using their respective keys?

Thanks in advance.

Rob Robinette

 

Yes.

Acutally you can have all of your keys coded for both ECUs. it is the ECU that remembers the keys, not the keys remembering the ECUs.

 

Thanks Stratocaster,

That'll make things a little easier.

 

You have to have at least one key that doesn't have "T5" stamped into it too. I think T5's are vin cut though.

 

T5 keys are cloned copies of existing recognized keys. You can not program a T5 key to start the car when all keys are lost.

 

where do you look for the "T5" stamp? i have a MY06 that is lares cut, can i still flash my keys to match the new ecu and also still start my old ecu?

 

T5 keys are available for 00-05 cars. T5 is stamped on the metal part of the key. They can only duplicate an existing programmed key.

The same immobilizer rules apply with all cars. If you swap PCM's the keys will have to be relearned to the new PCM.

 

but can they work with more than one pcm/ecu?

 

It won't matter for a 06