Ceramic holder is not your answer and it has a long lead time if you have to special order. It is bad connection as per other members opinion. Just clean the fuse holder, do what other members suggested and put a good plastic fuse in ( copper or aluminium are the SAME ). Mercedes has been using plastic fuses for a long time. You can change it out later if you really want to go with ceramic.

Good luck.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

Because of the melted connection the contact is obviously worse (black).

I'll pull them all, clean the contacts and apply dielectric grease to the tips. Every relay or contact I have pulled in this car, I have put the grease on.

Thanks for the quick reply's.

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AJ

1985 300D (SOLD)

Aluminum fuses have a bad habit of corroding where they contact e holder. When that happens, resistance increases until the heat melts the plastic fuse holder or the connection is degraded to the point that current fails to flow.

Copper and aluminum may be the SAME is some ways (like both being metal), but copper or bronze fuses are much better choices than aluminum. There have been a number of electrical problems reported on this forum which were directly attributable to aluminum fuses.