How do i add a channel to a westing house tv?

Simply contact their support at the following link: http://westinghouse.com/contact-us/ but know what your model number is (not the serial number).

I think you are not allowing the scanner to actually find the channel before switching out of the menu. I can think of no other explanation for both manual and auto functions to fail (unless you have a lemon).

If you do not have a manual, you can try one of the alternatives below.

Or, you could try to google for the manual for your particular model of Westinghouse TV and find the procedure there. Below I simply list a couple of manuals that may be applicable but clearly are for two models of Westinghouse TVs.

Manuals Online offers a simple to understand procedure (if you can download the manual, I have trouble reading it in my browser for some reason). The information is on page 43 of this alternative. http://tv.manualsonline.com/manuals/mfg/westinghouse/ld265.html?p=43

It has diagrams of the menu.

Pages 35-38 of another manual covers both automatic inclusion and manual addition of channels on a particular Westinghouse TV. http://westinghouseelectronics.com/wp-content/uploads/2010/05/LD-4258-User-Manual.pdf