How to add new keys into yaris immo?

[darrenhyland]

hi all, got a yaris european spec that has only one grey key...it is 4c as checked in zedbull...customer has a new master key and wants this programmed to the car...question is can i add the key string into the immo eeprom and how do i do it?

[ngakson2002]

Hello
It is impossible to carry out on board programming of the master key bought by your customer by using the grey key which is the Valet key.
It is then possible if you reflash the immobilizer eeprom, meaning you will need the corresponding virgin dump.

However if you can read the immo dump and post here with the data read from your customer master key using the zedbull, i will add the key directly in the dump therefore preventing you from reflashing.

As you confirm the key is a 4C key, i think the eeprom storing key data should be in the engine ECU
93c56 if DENSO
93c66 then immobox
25080 if Fujitsu
95po8 if Bosch

So read dump and post here.

[paul_12345]

some info if you use the search function of the forum

[foxdata]

i use tango toyota key maker to do this it work perfect to add 4c key

[ngakson2002]

hello,
Tango works very well but expensive 1200 euros for base software+ hardware and 120 euros for Toyota 4C transponder software.But with just your common eeprom programmer and a transponder chip reader i can show you how to add this key directly to dump

Regards

[mandi]

hi
read dump from immo end post her