Pop sound

[nigel7887]

Hi all recently I just collect my gla 180 and realised that there is a pop sound each time when I turn off the air con after the car is stationed. There are times where the car stop at the junction the pop sound also can be heard. The pop sound comes out from the left passenger side. Another issue is the reserve factor fitted camera also has the click sound when I engaged reverse gear. Do you guys have such issues. Please advise. Many thanks. 

[jtang]

It's normal. It's more obvious when the ECO start/stop is activated when the car comes to a halt and the engine gets cut off, the aircon will shut down next with the soft 'pop'. I heard this in a CLA180, Cla200 & even in my CLA45.