Anyone noticed, a really subtle high pitched alarm/beep with right indicator on the xc40?
it’s so subtle but enough to be annoying and hard to demonstrate.
Xc40 high pitched beep with right indicator
ab24Anyone noticed, a really subtle high pitched alarm/beep with right indicator on the xc40?
it’s so subtle but enough to be annoying and hard to demonstrate.
No...what year is it? If it has the AAOS you could try re-booting the IHU. Not sure how if it has the Sensus infotainment system. The indicator sounds come through the speakers, so it's possible one of the speakers could be damaged?? Odd one!
Thanks so much for the reply, bought new this year but a 2022 model I assume, Volvo has reset the system but still happens.
Only with the right indicator is on, beeps in time with the indicator - very very subtle but definitely there.
10 months later
Did you find a fix for this problem because i have a c40 recharge doing exactly the same thing and its quite irritating
Ok, mine is booked in early May to be looked at, so if they find anything ill be sure to let you know.
Doesent sound promising though.
The high frequency angle says a lot. I'd say this will be an issue with whatever device is driving the output to the indicators.
You are almost certainly hearing PWM (Pulse-Width Modulation) whine, there will be a computer or PDM performing this electronically. It is a high frequency modulation, and it can cause the solid state components to vibrate at that frequency, which is what you are hearing.
With modern LED lamps, if you just hook them up to a voltage source, they will short-circuit and blow up. If you had a car that originally didn't come with LEDs, and you convert it, then you get bulbs that have resistors (ballasts) in them, which basically put the current flow in a chokehold to eliminate the short circuit problem. However, this approach means you don't fully realise the energy efficiency of LEDs. So, on modern cars designed for LED illumination, manufacturers use a computer to digitally switch the LED on and off thousands of times a second. As a result, "on average", the LED receives the correct amount of power, and no ballast is required.
This is also why when you see videos of modern cars, often the lights are flickering on the video footage, even though they look normal to the naked eye.
