That indicates a fault and the switch needs replacing.
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A clicking noise from the dash on a 2003 Mercedes Benz might be the flasher for the turn signals. Sometimes the flasher will make a clicking noise if it is about to go out, to let the driver know it is time to replace the flasher relay switch.
A bad starter might make a noise. The starter could also go bad with no noise or warning. However if the starter is making noise then there is a problem that could cause failure at any time
A bad compressor belt can cause a whistling noise while running the air conditioner. A bad engine can also cause this noise.
A single knocking noise when braking or turning can be caused by a faulty axle. The cost of replacement is usually around 1,000 dollars.
You could have blown your tire or it could have gone flat.
All dimmer switches hum. The older they get, the louder the hum. If you have compact florescent bulbs in the fixture, this will cause the switch to hum louder.
The thing that could cause a knocking noise in your car is the same thing that could cause it in all cars A rod that or a flat lifter. it all really depends on where the knock is if its higher and to the back of the motor, it could be a motor mount
An air leak.
A bad noise suppression condenser. Usually attached to the alternator.
Stuck hydraulic lifter.
The belt is slipping.