VW 1.6 MFI 8 valves starts and stops

They changed the key to the second that brings the car starts and stops the injection light

If you are more details for example, the year if Sedan Jetta, or another. how long stops.

I think your problem is due to the fact that they carry a circular sensor in the Llavin that sends a signal to a box that reads the chip code that carries the key an interior, the car turns on and turns off because it is a single cable sensor the time is like two seconds that takes the signal to go to the box (unit) Check the codig Chip is also damaged, it could be the sensor in the llavin, or the unprogrammed key (Valetkey) I think that your problem is there .....