The passenger side electric window makes a scrapping noise when going up and down, but there are no scratch marks on the glass. Is it advisable to spray some lubrication and if so, is silicone spray or PTFE spray the best option. And also, is it just a case of spraying on both sides where the...
Welwyn Merx Limited is a family run business with genuine passion, dedication and 25 years of experience dealing with Mercedes-Benz and AMG passenger cars. Tel: 01707 395999www.welwynmerx.uk
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