High pitched whine with Xenons

[armthehomeless]

Hi all,

Being new to Golfs and Xenon's in general I thought I'd ask here before being concerned.

When the xenon's switch on in my Mk7 R, there is a really high pitched whine. It disappears when they turn off

Is this normal?


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[Brendan_A]

Mine does it too. Pretty sure the noise is coming from the ballast. Mine makes all sorts of noise when you shut it down.

[wasabiz]

I think this happens with most Bixenon cars. The noise is even present in my C250 when it first starts up

[Martin]

xenon need ~20,ooo volts to start and ~85 volts to keep them going
The ballast has a voltage inverter, the whine is the frequency it's running at

[armthehomeless]

OK great. Thanks guys! Much appreciated

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[Paul_R]

I must be getting old. Never heard such a noise on mine. Rarely drive with the stereo off though.

[GeckoZAO]

I've got the same sound.
Sounds cool to me. haha!

[Snail Style]

Also remember when the xenons are on the aiming motor for them will be operating. That makes a whining kind of noise, but if your at a dead standstill and not turning the steering, you shouldn't be able to hear anything.

[Martin]

I must be getting old. Never heard such a noise on mine.

It is a high pitch/frequency - not everybody can hear it
Even those that can hear it often don't notice

[kennyc]

Yeah i have noticed that the mk7 is so noisy!
There are loud noises all over the car, noise when you turn it on, loud noise from the rear camera and when you turn it off.

Ahh well, will get used to it soon i guess. I just pump the stereo!