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Replacement MS3-Pro fuse, 500 mA
Replacement MS3-Pro fuse, 500 mA
Replacement MS3-Pro fuse, 500 mA
Replacement MS3-Pro fuse, 500 mA

MS3Pro Ultimate F4/F6 Replacement Fuse

5 out of 5 based on 1 customer rating
(1 customer review)




The MS3Pro ECU’s feature user-replaceable fuses that protect against voltage spikes and other abuse. To replace these fuses, use a needle nose pliers to pull the fuse out of its holder, and then push in the replacement fuse by hand.

This is the 375mA fuse used for protecting both 5V power supplies in the MS3Pro Ultimate ECU.

Fuses sold individually.

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1 review for MS3Pro Ultimate F4/F6 Replacement Fuse

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Where are the fuses located on the MS3-Pro?

  • They are on the top side of the board, near the white connector.

How far do I have to disassemble the MS3-Pro to replace the fuses?

  • You will need to disassemble the case and remove the PCB.

What tools are needed to replace the fuse(s)?

  • Only a #2 phillips bit screwdriver with a good tip.

Why did the fuse blow, anyway?

  • The most likely causes are short circuits on the VREF or stepper IAC control wires.

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