Peugeot central locking system

[mordie]

Hi, I have a Peugeot boxer Fairford motor home 2019 model. When i press key fob to lock , the back door locks but is making a strange buzzing type noise.(it does lock). Can anyone offer some advice please.

 

[Spriddler]

For how long after locking does it continue to make the noise?

 

[mordie]

For how long after locking does it continue to make the noise?

Only when I am in locking process.