Anyways, Techstream error comes back as "Communication error between key and ECU". I then ordered the following to see if this might do the trick: https://www.ebay.com/itm/183729727145 (China) . Otherwise, I'll end up going to another locksmith. The vendor I bought the keys from said to use The Tango Programmer, which has a hot slot for the chip, copies or writes to the chip:

Anyways, I'll followup here with any results.

 

You could try to reinstall techstream.

What is the EVALUATION COPY? what version of techstream are you using? Where did you get it?

 

Is this what you used?

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Try another version

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The older versions have an evaluation or trial period, gives you the utility (customize) button (full features). Still, it didn't work here, has me thinking that the car may require a writer/transmitter attached for writing transponder/immobilizer chips; such as the mentioned "Tango Programmer" (video).

 

So did you use the mini vci cable or was everything done by the locksmith?

Do you have keyfob or PUSH TO START?

 

Keyfob. Tried both. Locksmith apparently wasn't familiar or tooled for the 2016 transponder chip. Sort of left me in the dark.

 

Get the techstream cable. I posted and install it on a laptop or if you have an old one even better.

Many people have programmed their chips with techstream. Did you make sure the keys you got are the ones for you model ?


Wait I just read you tried the mini vci cable.

Maybe try a different version . Do you know what version you tried

 

Thanks. Techstream will announce that it's registering or adding a transponder, but then the communication error. I'm thinking that maybe the 2016 car alone can no longer transmit to write, may need a transmitter. The guy who sold me the keys seemed to confirm this, along with something I'd read yesterday online. I'll do some followup here as this gets worked out.

 

I can tell you MANY people here have used Techstream on model 2013-2018.

You said you used an old version techstream. Maybe try a newer version. I posted the v13 you could try.

 

The link you posted, did you notice the last two images that there is no "Utility" or "Customize" button? It's obviously not a working program. The early versions have an "evaluate" button, full features. Search google and you'll see that very very rarely did people get the thing to work.

 

I have no idea what you're talking about. Just tell me what VERSION YOU HAVE! It's not a hard question.

 

The version you posted has no customize/utility feature for the immobilizer transponder chip; at least not for the 2016 Rav4 LE. The older v10.30.029 does. Problem seems to be the blank chip that came with the new key. Needs to be programmed and then read into the ECU? Looks like the car can't do anything with a blank chip?

 

V10 is old. Does it even support the 2016 model year?

 

 

Is you car made in CANADA

Is your key FCC HYQ12BDM

 

v10 seems to work except that it appears that the later model transponder chips are not cloneable. Ebay item description is "12 mm Wedge Transponder Non cloneable"

 

can you post the ebay link to your keyfob.

you are from the USA?

 

Here's the key, and I just emailed the seller with my situation.
Seems that car cant write to key, can only read what's written? .

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Is your car from CANADA or Japan. Are you from thE USA.

I think you got the wrong keyfob wrong FCC number

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What's does it say on the back or you OEM KEYFOB

Post a pick of the back of the OEM keyfob

 

Key Marked: GQ4-52T, 89071-0R040
Toyota Part: 89070-0R121 = GQ4-52T

Looks like this is what I need to do:

 

ok .then the only thing else I can suggest is you try a different version of techstream. Make sure you dont have all the keys in the car at once

where was your car MADE ? Canada or Japan

first letter of your VIN NUMBER

2 = Canada

J = JAPAN

 

Canada, and thanks. Called locksmith and it's $70 to program a blank chip to Toyota; and so instead i'm going to buy a $8 OEM Toyota H Blank key to break it open and take the Toyota ready H chip. Insanity, for sure, but problem solved.

 

Did the locksmith say that would work? Doesnt your new keys have the H chip already in it? Did you try with another version of techstream.

 

Keys came with an H chip, or should I say blank H compatible chip (blank, uncoded). Toyota OEM H key will come H encoded, problem solved.

 

Good luck. Let us know how it goes. It may help someone else in the future. List where and how much the blanks costs.Will you still need to use techstream

 

The Ebay seller below assures me that I'm on the right track, meaning that the blank H chip is the problem where the chip has to be pre-coded specifically for year/make/model and then registered into into the vehicle ECU. Pre-coded 2016 Rav4 LE H chip here is $12; or two for $18 (blanks are $1); and I'll let you guys know how this turns out:

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