Renault Megane II 2005 Starting Problem -- Check Injection Message

Hello Renault owners!



I have a Renault Megane II 2005. Two weeks before, as I got into and tried to start with clutch + start button, it made a sound of trying to start but it didn't. I tried 3-4 times and then I called a friend, Renault Tech. He told me that the problem was the gasoline pump.



I called the Assistance to move the car. While moved the car by hands, it suddently started. Then dead again.



The Tech changed the pump. It started. I went half a mile, switched it off, tried to start again. DEAD AGAIN. I have a message about "CHECK INJECTION".

But the computer told that there was an electronic problem to the electronic secures. Fixed too. No message from computer.

It started.



Late at night, the battery of the key-card was dead too.

I opened manually, car dead again.



The next day, I changed the battery of the key-card.

First try, Dead.

Second try, ON.

I went to the Tech and told him: Dont give it to me unless it works proprietly.



I HAVE ALMOST GONE CRAZY.



I don't know if it is smth notable, but all that happend BY night. Low Temperatures 3-4 C.

Or maybe the key-card battery?





ANY IDEAS?