Harri, have you checked the wiper relay which is somewhere in the fuse box, not unheard of for them to fail? I'd be trying that before stripping out the motor.
Found this...
Check fuse 27 15/20 amp located end of dash driver side Open door remove plastic panel
Harri let me know how ya get on, I can sort that here in the garage no problem. If its not a big job il only charge you for the parts. See ya tomorrow night