Smart key no Ignition Toyoa land cruiser VX year 2008

[rex89]

Hello Guys ,
Please i need help on an toyota land cruiser Vx year 2008 petrol engine V8
smart key stop to work after batt discharge , key stop to turn ignition to on but remote work well
i check all fuse a diagram according some fault codes(B2784-Antenna Coil Open/Short and B278A Immobiliser Power CHarge Malfunction(VC5 GND Short) that i find into immobiliser but all fuse and wiring seem ok , i read ID code box and smart ID , i loaded 93XX86B smartkey box into tango key stay into dump but i dont trust in ID code box dump(93XX46B) seem corrupt thanks for any help and suggestions.


Best regards

[rex89]

Hello guys,
Please is it possible to get another dump of ECU ID CODE already reset for get ignition and try to program key
thanks.
BR

[Tedum]

what about the orange light on the push button ?

[rex89]

orange light not work i try to change push button always same

[Tedum]

the problem is with the power control ic found in smart aggregation but try with this reseted dump report the result

[rex89]

OK thanks i will try and post result tomorrow thanks for files

[Ant308]

Hi tedum, I have same problem. My vehicle had slight water damage. All wiring tests ok. Should I try new ecm?