I've got a couple of error codes coming up on my readout on my Permobil corpus 500. One of them is "joystick error" and the other one is "centre joystick". I have a horrible feeling that this type of arrow is going to be terminal and the whole joystick unit will have to be replaced. I know that these joystick units are used on other wheelchairs so I was wondering whether it is possible to source a joystick unit from somewhere else other than Permobil. Problem is, I need to program in my tilt recline, seat raise & electric leg rest functions. I can't remember what Permobil were asking for a replacement joystick unit but I think it was in the realms of about ?700, maybe a bit more.