so my 2001 IS 300 Sportcross which has operated 100% no problems for the last 8 years now wont start...and the ironic thing is its supposed to be sold tomorrow!

heres the thing:
my key fob battery and the car battery went out at almost the same time, so I replaced both today.

now I cant unlock the car w the keyfob, I have to do it manually. after I have, I can get the blinkers to show its open or closed.
Inside the cabin light comes on, and the "alarm" light blinks, but theres nothing coming up in the instrument cluster, even when I crank it?

The engine cranks strong, but it wont start. No radio, no instrument cluster, but lights are ok inside and outside..

did I activate a engine demobilizer or something?

please help before I try to sell it tomorrow
thanks!

 

u might need to do this http://my.is/forums/f221/diy-key-reprogramming-334593/ to reprogram your car with the key

i believe ur car isnt starting because the master key isnt programed to the car. try the spare gray key. the car should start. try it out

 

I would start by checking all your fuses. Check the driver & passenger kick panels and by the battery. I would start with the MPX-b(?) fuse in the passenger kick panel.

 

ok update

so I found none the less than 3 broken fuses.
the main alternator 120A fuse, the tcst fuse and the radio fuse was all blown...

after I replaced al of them, all the electronics seem to work fine, and the instument cluster and radio is back on.

However, the starter crancks, but the engine wont start!

is it possible to mess up the imobiliser when replacing batteries in the fob and in the car at the same time?

this is what it acts:

http://www.youtube.com/watch?v=MaYbcC8yJdo

 

Try what i posted. My car acted the same when i got a key copied. The car started with the spare key

 

Yea reprogram the key, Mine did the same thing. When you put the key in the security light on your dash stays flashing right?