Join Date: May 2011
Location: southeast missouri
My 11 XTZ had initial problems with po635 that would not clear up. The power steering would not function when the code was flashing, apparently AC has a tool for reflashing the PS unit, this was done to my machine and it did not fix the issues I was having. The tool that AC made for the fix is to correct the the voltage sensitivity and the PS unit should continue to function even while flashing po635. In my XTZ the PS unit would quit functioning, after a lot of testing and aggravation it turned out that the speed sensor was shorting out causing PS issues. BTW the speedo would jump on and off while operation indicating a malfunction in the sensor. On my 11 HDX, the PS never quit functioning while the po635 code flashed, it was caused by a low quality battery that would not hold a good charge, the AC flashing tool fixed the code flashing but it still has a crappy battery in it. Apparently AC doesn't have many of these tools and the dealer has to wait weeks sometimes to get them. My XTZ had the cross threaded dipstick when I got it to but the dealer gave me a new one sight unseen.