I'm an active member of the Porsche side of Pelican's forums but have never posted to this community. Hoping someone can help. While driving my wife's 2005 E500 4matic wagon (w211), the front defroster was blowing very hot and at an unusually high speed. When I turned it off, the HVAC controls and the dash all died... the tach and speedo froze on position and are not in op. The car starts, all lights and radio work... even the glove box lights work so they are definitely all on different circuits. I immediately checked the fuses in the left dash panel, then the rear block on the back and then the fuses in the front left engine compartment. I can not find any broken fuses.

Initial research has mixed messages about the SAM module and whether that is a DYI part replacement or not. Have read that they need to be programmed to the car, etc. I don't have advanced testing (only basic but since the systems are totally dead, how could the diagnostic tool test them anyway?

I've located diagrams for the fuse blocks in the only mention I find of the "Front Pre-Fuse Power Distribution (F32)" with "F75 40A fuse for N10/11 Passenger SAM-P" (is this the dash board) and "F76 40A fuse for N22 Air conditioning control module" (I assume this to be the HVAC controls). I am now onto the pre-fuse distribution block and those 40a fuses.

Does anyone know anything about changing them as a DYI?

Pelican does sell the SAM part# Part #: 211-545-91-01-MBZ
Any help would be great. Thank you,

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