Electronics gone mad

[Gbarry]

Hi Lads,

I've a 2009 IS220D that has thrown a tantrum with its electronics. I was driving yesterday and everything was perfect, engine was running smooth and all electronics working fine. However I went to start it today and the power steering light and ABS light stayed on. Now the power steering doesn't work, the dash display shows no values for outside temp/Fuel range etc, the electric windows don't work from the drivers switch and the engine temp gauge doesn't move on the dash. The check engine light is not on and nothing else is displayed on the dash. It also seems to be a bit dead when out of boost, I know the lag feel is fairly large on these engines but it seems more like its in limp mode now until it comes on boost, then it feels fine.

I checked all the fuses in the drivers side, passenger side and engine bay and they are all intact. The Battery seems ok as it doesn't struggle to start and I measured the alternator charging at just over 14V and Battery at around 12.8-13V with the engine off. 

Has anyone any idea what can be causing this? I'm guessing its the ECU but I'd rather see if this has happened anyone else before I start ordering parts.

Thanks.

[madasahatter]

Sounds like alternator has gone or the belt has snapped.

[Gbarry]

The belt is still there, I put a multi meter on the Battery with the engine on it was measuring over 14V, I tried connecting my OBD scanner and it came up linking error too

[bongani]

Swap the alternator, see what happens. I had the same problem, called the AA and he told me to change the alternator, turns out, it was  faulty, even when it showed 14V on the multi metre.