i started my 206 and remote control battery low came up?

It means that the battery in your remote control key needs changing. Look in your handbook, dead easy to do. Undo the screw, unclip the casing using a coin at the ring. CR2016 battery. Don't lose the chip out of the key.
If the remote control does not work after changing the battery, reprogramme the remote control thus:-
Switch off the ignition.
Switch the ignition on again.
Press button A (the larger button).
Switch off the ignition and remove the remote control key from the ignition lock.
The remote control will work again.

Chicks Fan
November 2010