Re: rear washer
Have the same problem on my 147 so i took the rear wiper off and the cover where the washer nozzle is housed. Oh look its not there ! Some monkey, err, sorry dealer, has removed it, and blocked the pipe. Now i have to remove the inside trim from the rear tailgate to have a look to see whats happened. The feed pipe under the bonnet is on the RH side as you look at the front of the car near the windscreen trim and tested OK so there is water trying to feed the tailgate.
Just got to find where it stops.
Also have a defective interior boot light and that is fed from the central locking latch on the tailgate so have a feeling someone had a good day with my car once before i owned it.
Know what I am doing this weekend !