Hello Duanebk,
If the lens surface or Instant AF sensor is dirty, autofocus may not work properly. Remove any dust or dirt particles using a non-aerosol type blower brush. You can also use a clean, soft lens cleaning cloth to gently wipe the lens. Let's try resetting the camcorder. You can press the [RESET] button located just behind the LCD screen's hinge with a pointed object to reset all of the camcorder's settings to defaults. If the focusing issues still persist, then the camcorder should be sent to a service center for evaluation.
Please follow the link below to access our online repair portal to arrange for service:
https://mycanon.usa.canon.com/signin
If you already have a My Canon Account and your product is already registered, simply click on the “Get Repair Services” link on the left menu and follow the onscreen instructions to arrange for service for your product.
If you have a My Canon Account and your product is not registered, you must register your product first. Click on the “Get Repair Services” link on the left menu, then click on the “Register Product” link on the right. After your product is registered, click on the “Get Repair Service” link on the left menu and follow the onscreen instructions to arrange for service for your product.
If you do not have a My Canon Account, you will need to create one. After you create your account, click on the “Add Product” link to register your first product. After your product is registered, click on the “Get Repair Service” link on the left menu and follow the onscreen instructions to arrange for service for your product.
Once you have completed the repair request, you will have an opportunity to print a copy of the request for your records. This request form will also contain shipping instructions and an address label that you will attach to the outside of your shipping box when mailing your equipment for repair.
When shipping your camcorder, please be sure to remove the memory card and batteries. You are not required to send any accessories or manuals when shipping the camcorder. Be sure to include your name, street address (no P.O. boxes, please), telephone number, email address, and a letter describing the issue with the product.
Alternately, you may fill out an online repair request form at the following link to setup your repair using our online service. Scroll down the page and look for [Request Forms & Service Programs].
https://www.usa.canon.com/internet/portal/us/home/support/service-repair
As we do not provide RMA numbers for service, we suggest using a trackable and insurable service (i.e. UPS, FedEX, Priority Mail) to ship your camcorder. Please package the camcorder very securely in a sturdy shipping box to prevent damage during shipment.
