I have a faulty PSE-Module on my 1997 SLK 200. The MB part number is 170 8000 148. I have found a used pump for sale, with #170 8000 248. Do anyone know if this would fit? Or any other PSE's that would fit? I read a earlier topic from snanceki, https://mercedesforum.com/m_10135/tm.htm. What do he mean by "170 8000 148 (06) Scrap component from dealer bin. vehicle spec. unknown."?