Ever thought it might not be the right button?
If your Volvo s40 radio is always off, you can turn it on using the power button. The button is on the left, top-hand side.
Possibly it just might turn the radio on & off
For the PS3, just press down the directional button to the left, and the radio should turn off.
turn the radio off and press the set button use the seek button to adjust the time
turn off the radio and then press the mute button
Not enough memory. Hold power button for 10-30 seconds to reset.
The center button, beneath the radio. In a 2005 PT Cruiser
Push the VDC button to turn it off. Look below the radio for the button.
umm that's weird umm maybe u pressed the wrong button?
turn your radio off by pushing in the volume button, when the radio is off press the search arrows up or down to change the hour and minutes, when finished setting the clock turn the radio back on
If you have the factory radio this wont be a problem. Turn the radio off. The push in the DISP button, which is the bottom dial below the power button. When the radio display settings, use the seek button until oil life is displayed. Then press the 1 or 2 button util the display says reset. The hold the DISP button again and the light will go off. This process is also outlined in the owners manual under radio. If you don't have the factory radio push the gas pedal down 3 times with the key in the "on" position without the car being on, and this should do it.
You push the ECT PWR button (located left to the radio) to the "Off" position.