2005 Renault Scenic 3 beeps on start up

Noises problem
2005 Renault Scenic Automatic

Yesterday my son was sitting in the front seat whilst I was cleaning out the car.

Since then, when I start up the car I hear 3 beeps and then it stops. There is no problem after that and it drives ok.

He was playing with the wipers and indicators etc but not sure what he might of done.

Also ever since I've had the car (since last year) when I lock it it makes a continuous beeping noise that last for approx 1 minute and then stops. Could this be linked to the alarm.

Thanks