Knocking sound when charging

[alxman]

Has anyone noticed a transient rapid knocking sound when changing? It seems to happen when switching to AC charging after DC charging, at the very beginning of the charging process. It only lasts about a minute and it appears to come from inside the charging port. Otherwise, the car seems to charge without problems.

Sponsored

 

[craz8]

I've heard this once - sounded like a compressor running. I have a video, with audio of the noise.

 

[alxman]

I've heard this once - sounded like a compressor running. I have a video, with audio of the noise.

Yeah, that’s like the noise I heard. Although maybe not as fast…

 

[krissrock]

Kinda loud, but it does sound like the compressor

 

[RichardM]

my year old Macan 4 does this every time you try AC charging using the cars charge scheduler. Sound is like the air suspension compressor pumping up and then releasing the pressure. Car also throws a yellow high voltage system fault. Car been back to dealer about ten times and no resolution yet. They did change the pulse inverters with no Effect.

Sponsored