changing ecu on 2001 rav4

[smokey1968]

Hi, new to ravs, my 2001 auto has shifting issues, so i am changing the ECU out. my questions are.. will it start when i put in the new ecu, does the key transponder talk to the ecu or is it a seperate box somewhere that controls that? if the transponder/security part is in the main ecu do i have to take it to a toyota dealer to get it reprogrammed? thanks.

[(mr2)]

The immobilizer for your car should be in the ECU(ACA20/ 21 Rav4?)

If you get a new one it will be in a virgin state and your existing one will code in.

If you get a second hand ECU without a key Toyota can't help you. But you can get a key made to it from an auto locksmith.

Best option is to get one with a key, cut the transponder out and get a new key shell cut to your existing key, then use that key to code in your existing ones.