Toyota ECU Security Key Programming

Jamie I left Toyota 6 months ago and I don’t think we ever had to do this unless it was an ECU for engine, Immobilizer, or telematics where security is a main issue with that ECU. The SRS module that I am aware is still a Passive module that holds a lot of data but doesn’t need to be unlocked. I say this going up to 2019 that did have this feature but I am tryin to get you a 100% answer from a…

Hi Erik, I know it’s required for SRS as it is in service info. This is why I’m trying to verify I can perform the procedure. Thanks for your input.

I got what you are saying now. Can you bypass it on the aftermarket side or spend the money to get the access to complete the job. my mistake.

Jaime, I work as an MDT at a Toyota dealer. This is a relatively new process that just came out starting with some of the new generation models. I have had to do this process 3 times. Funny you mention it but we just had to replace a restraints module SRS on a 2022 Sienna fresh off the truck. I’ve also had to perform the process on a couple Venzas involved in an accident. I do not know the…

Thanks for the info. Ill plan to go do the job and see what happens. Any more info you find out would certainly be appreciated.

Try it! You might be pleasantly surprised!

We replaced a front radar recently on a 2020 Toyota Yaris that required an ECU Security Key.

We’re you able to login to TIS through Techstream during the process? What kind of subscription do you hold in Australia? Are there different subs for security professionals?

Did the whole job via Techstream login/subscription. However, we cannot code keys. I believe there's a separate system/login required to access the keycode(s). We can't access that part here in Aus - you may be able to up there?