[@Art_Mighty]

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http://www.ft86club.com/forums/showt...t=16673&page=2

Originally Posted by TheZombi

Picked up my BRZ last Wednesday, Drove about 500 klicks and got the CEL and Slip Light on solid. Went back to the dealer and waited about 2 hours for them to come and say they can see the issue and it requires a re-flash of the ECU, they gave it back and told me to keep on driving and they would call me when the equipment shows up.

From all the frightening reports from the states and the stories of the dealers ripping apart new engines and everything else I decided to do a little checking. The reported problem is that the computer is interrogating the camshaft sensors too many times a second (that was from the mechanic) the actual problem seems to be the exhaust cam in my car does not hold it's position when the engine is turned off, as it sits for a few minutes if the engine is stopped in a particular spot the cam turns slightly and the pressure backs off inside the actuator, then when you restart there is a big old air bubble there that needs to clear and it will throw a code until it does. If you reset the code after a few minutes of idling you do not see the problem again until you park it. I think their re-flash is simply going to increase/introduce a timer to ignore camshaft misposition for the first couple minutes of running so the VVT system can bleed out all the air bubbles and settle down. This makes sense to me as the problem only manifests itself after a few hundred KM's of driving and then becomes persistent in most cases, I now wish I had changed my oil at 200KM.

Anyways I will give my findings to the mechanic when I see him next week and see if he gets all pissy at the customer who thinks he knows something.

Originally Posted by TheZombi

Basically the way I see it the reflash is a bandaid or a mask to hide whats going on, but at the same time I don't see this as an actual problem. In the industry I am in many problems like this end up getting fixed with some minor reprogramming like adding timers the machines then run for decades without issue.

The only problem I see is they must make sure that if a camshaft is mispositioning during actual operation the ECU must freak out and give a code and then it needs mechanical repair. If it is in fact just a startup issue until whatever air bleeds in there clears then it should not affect the long term operation of the car but you can bet money I will get into the habit of warming up the car for a couple of minutes before I drive anywhere...

Zombi ROCKS!