You dont need FMBSH, 98-02/03 cars,for the first 5 years can be serviced by anyone,after that period, it must be serviced by a merc dealer to maintain the warranty. Look in your service booklet, under mobilo.stats007 said:The 30 year anti-corrosion (not all corrosion is rust!) warranty was introduced in September 1998. Officially you are required to have followed the service schedule with Mercedes Main Dealers - i.e a FMBSH to qualify for repairs. It has been known for cars without a FMBSH to have warranty work honoured, however there appears to be no hard and fast rules - even cars with FMBSH have been refused warranty work on the grounds that the current owner hasn't had it long enough! From experience persistance is the key. If they refuse any claim ask for Eskulab reports from Milton Keynes and seek legal advice.