Duplicate Transponder (duplicate key)?

[toyotaspammer]

Is there a friendly DIY of creating a duplicate key? I've got it cut, but need a way to program the transponder. Can this done via the ignition, similar to remote locking?

[Cyker]

I'm not 100% sure if this applies to the Mk3, but with the Mk1 and Mk2, if you could get hold of a new or correct used key module, there was a sequence you could use to add it to the ECU (Involved stomping on the brake and accelerator several times)

The other way was to get an auto-locksmith to clone the key transponder code onto a blank RFID chip and cut a key, so the car just sees them as the same key, but these don't usually support the remote central locking.

 

[toyotaspammer]

On 6/22/2023 at 8:37 PM, Cyker said:

I'm not 100% sure if this applies to the Mk3, but with the Mk1 and Mk2, if you could get hold of a new or correct used key module, there was a sequence you could use to add it to the ECU (Involved stomping on the brake and accelerator several times)

The other way was to get an auto-locksmith to clone the key transponder code onto a blank RFID chip and cut a key, so the car just sees them as the same key, but these don't usually support the remote central locking.

 

Hi there. What do you mean by 'key module'? Do you mean a working key? Which I already have. I have a spare key with a blank transponder, already cut. I just need to figure out how to make the ECU accept it...

[Derek.w]

A cheap option can you remove the elecrtonics from one key and put it in the other key.

[toyotaspammer]

11 hours ago, Derek.w said:

A cheap option can you remove the elecrtonics from one key and put it in the other key.

I already have a spare key cut with a blank transponder. I just need to know how to duplicate/add second key, that doesn't involve going to a dealership or paying a keycutter to duplicate.

[flash22]

If it's a genuine key no issue programming it, a new chip isn't blank it does have a code

i think @Cyker is a bit confused (must be the heat 😉), I take this is for the 07 Aygo

[Cyker]

It is indeed too hot for me, but I think you just misunderstood me - If it's a third party key, you can copy the transponder code from an original key to the RFID chip in it with a suitable programmer - I know because I ended up getting that done with my first Mk1, after failing to get an eBay'd OEM module to code to the ECU with the accelerator/brake stamping procedure  . I did pay someone to do it tho' as I don't have such gear.

Do you know the programming procedure for the Aygo or Mk3 Yaris @flash22? as that's basically what they'e after. I only have it for the Mk1 Yaris and Corolla but I don't think it's the same for the Mk3 and Aygo.

 

[flash22]

The Aygo has the earlier setup, similar to the mk2 Yaris, the mk3 yaris gets a bit more complex

5 min's with techstream to add a new key to an Aygo if it has a spare slot (Max of 4 keys) - all keys lost is another matter

[toyotaspammer]

Perfect, thank you everyone. Techstream VDI cable bought. For anyone who stumbles across this listing, I bought mine here: https://www.aliexpress.com/item/672381461.html?

Just make sure to send seller a message soon after requesting a link to the 64bit version of the software.

[toyotaspammer]

On 6/25/2023 at 1:11 PM, flash22 said:

The Aygo has the earlier setup, similar to the mk2 Yaris, the mk3 yaris gets a bit more complex

5 min's with techstream to add a new key to an Aygo if it has a spare slot (Max of 4 keys) - all keys lost is another matter

Hi there. Got it all set up, but as soon as I attempt to write a new key, it says it's reached the maximum amount... then I clear the list and it still gives me the same error... any idea?

[flash22]

Back out and go back in, remove key(s) you may need to cycle the key after

[toyotaspammer]

9 minutes ago, flash22 said:

Back out and go back in, remove key(s) you may need to cycle the key after

I've repeated the process 10+ times, and still having the same result unfortunately. I remove all keys apart from the master, then check data to see if it's full, which it is not displayed by 'N'. I attempt to add key, but says it's full...

[toyotaspammer]

Still experiencing the same issue. I did some testing.

1) Removed transponder (pcb only)

- It gives me ECU communication error, so I know it isn't an issue with the transponder

2) Cleared ECU of error codes

- Doesn't seem to make a difference

3) Removed the central locking pcb (transponder only)

- Doesn't seem to make a difference

 

Possible issues:

1) Techstream isn't actually removing the keys when clearing, despite the software saying so, which may be a possible driver/VCI issue.

2) The key that I have is not the master key (assuming it's the master key you need to perform these operations). How do you determine if the key you have is the master key?

[flash22]

As it's an early aygo it may require the L/K-line IIRC the Mini VCI only does can bus

you can run a cable check, Help - DLC3 Cable Check

 

[toyotaspammer]

3 hours ago, flash22 said:

As it's an early aygo it may require the L/K-line IIRC the Mini VCI only does can bus

you can run a cable check, Help - DLC3 Cable Check

 

You may be onto something here... and the survey says...

 

[flash22]

I take it that is connected to the car, not seen a no can before with the mini vci

it may be a driver issue, what does it come up with in device manager ??

[toyotaspammer]

52 minutes ago, flash22 said:

I take it that is connected to the car, not seen a no can before with the mini vci

it may be a driver issue, what does it come up with in device manager ??

FDTI drivers

[flash22]

What does the device show as ?

Will drop you a pm shortly

[toyotaspammer]

On 7/8/2023 at 10:49 AM, flash22 said:

What does the device show as ?

Will drop you a pm shortly

USB Serial Port (COM3)

Driver provider: FTDI

Driver ver: 2.6.0.0