Having just cleaned out the water from the base of my SMS40C12GB/18 for the second time ( last time 16 months ago)Thought i would share my findings.
Obviously with the number of postings on various forum's, this is a re-occuring problem on these Bosch's.
On removal of the R/H side panel and the lifting of the insulation you can see where water and gunk has been dripping down into the base of the machine.
This is happening because the plastic base is warping from the heat where it joins the stainless steel cabinet.
Bosch service engineers have obviously had a lot of call-outs to this problem in that Bosch have fitted a seal strip to the 3 sides of the machine to get over the issue, only problem is because they clip onto theplastic base they also warp thus allowing water to seep through the distorted gap. Also on this R/H side they have bonded a piece of Heavy Duty polythene to the Stainless steel cabinet to direct the splashes of water to the underside thus avoiding any electric's.
Bye the way these sealing strips must have been an afterthought because they don't appear on their exploded diagram's for spares.
Bertiewoost
April 2017