2nd Gen R56 Cooper S Won't start after replacing the head...

I recently replaced the head after burning a valve, and though she has power, the dash indicates that my key is not recognized.

With the key FOB in the ignition, I get the headlights to level, and hear the fuel pump activating and then get the "key" indicator in the dash.

I believe I have read somewhere that I needed to have the car re-flashed, but was unable to find the thread.

Am I correct, or missing something really stupid?

Specs....

07 MCS
New Head
Stock motor
Manual Trans

Thanks for the help!!!

Brett

 

Update to won't start....and now hazard lights won't turn off

After replacing the head, and putting her back together.... my initial problem was that I received the "Key" indicator. After purchasing the complete software package, I found that I had an open circuit. Come to find out..... I missed connecting the major ground from the body to the passenger side motor mount! DUH!!

I also struggled with getting her in time, despite using a dummy tensioner. The issue was that I was torguing the sprockets and the tensioner in the wrong order.

She runs like a dream now, with ALOT more power than she's ever had! But now I have a new issue....

After I had got on it, :wink: I had the exclamation point display on the dash and my hazards will now not shut off. I've disconnected and reconnected my battery, evaluated and cleared codes all without success. The car continues to run well....despite the code issue. Codes that display are MAF and turbo related.

The only issue that I know of is that I can not stop a small leak from the turbo's upper banjo. Could the leaking from the banjo cause these code issues?

Any ideas are appreciated.