I am new to the forum, looks like there is a lot of information here. I have a 2005 S250 which I am having some issues with. Some times when I am running an attachment the hydrolics will quit working. It throws a code 12-23 which is front auxillary PWM switch not in neutral. You can let it set for 30 minutes or so then it will usually work again. Also lately, just when running with the bucket on I here 3 beeps. Checking the codes sometimes it is 12-21 which is front auxillary PWM switch out of high range, and sometimes it is 12-22 which is front auxillary PWM switch out of low range. I have purchased a service manual for my machine.It has a lot of information, but not how to troubleshoot this problem that I can find. I also did a search on this site, and although I did not find anything specific to my machine, I found other machines that had the same problem. I think that I need to start at the control handle. Take it apart and look for coroded wires, loose connections, frayed wires ect. If none are found then move on to testing wires and switches as described in my manual. Is this the right place to start? If not could you give me some suggestions, or if there is a troubleshooting guide in my manual, could you tell me what page to look on. Thanks Dennis
