Canon PowerShot A4000 IS Camera Lens Error Troubleshooting

The first step for a lens error is to gently clean the leans with a clean cloth. If this does not work, then you proceed with the following steps.

Apply gentle pressure to the lens cover and move lens in a circular motion until you hear a "click".

Hold down the menu button for at least 10 seconds and select the "Factory Reset" option to reset your lens.

Remove the battery from your camera and replace it once it is fully charged or buy a new battery if your current one is over a year old. See Battery Removal for more details.

Once the battery is out, remove the memory card from camera as well. See Memory Card Replacement for more details.

Turning the camera on without a memory card will reset the camera. If the camera has been reset and displays a memory card error message, then the memory card can be reinserted and the camera turned on once again.

Insert the A/V cable then plug the cable into a power supply or computer. Please see Connecting Camera to Computer for further instructions.

Turn the camera on by pushing the ON/OFF button.

While turning the camera on by pushing the ON/OFF button, press and hold the MENU or FUNC. SET button.