RNS-510 make nosie

[Passat R36]

any CDs in the unit? Might be self checking and the CD changer stuck...

[FJ Steve]

I don't turn heater or aircon as winter season, as you ask I fully turn hand knob left and turn radio off. However when door open or start engine it start make noise.

So.. it occurs when you open the door, but no key in the ignition? That's the fuel pump priming itself (runs for about 3 - 4 seconds).

Given your parking arrangements (under cover etc etc), then it's a high chance the cd changer is caught up somehow. When was the last time you played, or loaded a cd into the RCD510

[sjoeha]

any CDs in the unit? Might be self checking and the CD changer stuck...

I never use CD player, from when I purchased cause I always use bluetooth to play music. Does it may related?

[sjoeha]

So.. it occurs when you open the door, but no key in the ignition? That's the fuel pump priming itself (runs for about 3 - 4 seconds).

Given your parking arrangements (under cover etc etc), then it's a high chance the cd changer is caught up somehow. When was the last time you played, or loaded a cd into the RCD510

It happen with unlocked car, opened door, when igintion key, start engine, and locked door as well.

[AdamD]

It happen with unlocked car, opened door, when igintion key, start engine, and locked door as well.

Take a video of the headunit making the noise, and post it up for us to see.

[FJ Steve]

Take a video of the headunit making the noise, and post it up for us to see.

he did...in his first post

[AdamD]

he did...in his first post

So he did - I completely missed it.