I'm thinking that it could be a bad wire too, having two shorts to ground sounds like a common wire is being shorted somewhere.Did you find it? Do you have exact codes its giving? Check the wiring behind the seat going to both SJC joysticks, I know it sounds weird but I believe there is a wire behind the seat for the electric seat air pump option that gets pinched.
Still no luck. Codes are m1706 & m3506 ThanksI'm thinking that it could be a bad wire too, having two shorts to ground sounds like a common wire is being shorted somewhere.