Hello everyone,
over the past few months my 2016 Aston Martin Rapide S has developed an odd squeal when the car didn't star but you step on the gas pedal(accelerator).But when your car starts or is driving, the sound is gone.
This sound also came out for 20-30 seconds after the car is switched off.

thank you very much

 

Electric throttle movement, why would you use the accelerator when the engine is off? Normal operating system.