Vz commodore starting with bcu problem??

[vz23kq]

Hey everyone,
As i start work early im up at 6am, Cars Freezing cold, Almost everyday when i jump in to start it, The car turns on then just turns off, Then on the screen it shows Immobliser failed, , ????
then it wont even let me switch the key in to let the car start i wait for 5 mins then it usually starts and im off to work,
6 times ive had this problem in this week, Can any one give advice on what i should do???
btw its a 2005 holden vz commodore
cheers really would like advice before taking it to the mecahnis

[Kiddo]

Is the car locking properly? annnnd is there an "Alarm Activated" warning?

[VZ_commo91]

Sounds like your key is begging to fail...

I have heard rumors that if the keys programming fails, its upwards of $3,000 to reprogram the entire car with new keys.. Heard this from a guy at a key shop.

If you have another key, Try that, if it still does it, then it could be related with the car, not the key.
Actually mine sometimes does this, will start then turn off, But the immobilizer light is still flashing when started. But I get no warnings on the dash, just when it turns off I get ' sevice vehicle soon '.

[Dti-dan]

Hey mate I have the exact same problem and have been told it's the key
Havent got around to getting a replacement cut yet so can't 100% confirm
That it will solve the problem

[vz23kq]

Hey guys, Nahh deffinetly not the key, I have 2 keys, I dont no weather its just too cold for the car to start as its only in the MORnings, But there are no other problems, I open the car like always, No alarm alerts, try start the car it starts then Turns of right away, Then a message comes onto the screen IMMOBISLER FAILIED, If it does it one more time i think ill take it to the mechanics and see what they say?