Hey guys, I have an issue with a brand new M12 ratchet. I was tightening some bolts on the HF 5 drawer cart this past weekend (13mm head), and it would work and then stop and all four lights would flash at the same time. Swapped out the battery and got the same thing. Is this some kind of notice that I have hit max torque for the unit or what? I did some googling and really only found posts about a sequence of lights flashing and the online manual was of no additional assistance. What say you?
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Milwaukee M12 3/8” ratchet problem
- Thread starter jkesselr
- Start date
You said all 4 lights flashed but did they flash in an alternating pattern? That means it thinks the battery overheated or otherwise isn't getting a good reading off the temperature sensor in the battery pack.
Did you check the contacts inside the battery compartment? Make sure the temperature contact isn't bent away and none of the pins are oxidized/corroded/or otherwise dirty. A dash of electrical contact cleaner might be a good idea to try if you have some. Otherwise you can rub them with a pencil eraser. It could be something else but those are good first steps for any problem with a cordless tool.
Did you check the contacts inside the battery compartment? Make sure the temperature contact isn't bent away and none of the pins are oxidized/corroded/or otherwise dirty. A dash of electrical contact cleaner might be a good idea to try if you have some. Otherwise you can rub them with a pencil eraser. It could be something else but those are good first steps for any problem with a cordless tool.
KnurledNut
Well-known member
Mine flashes after reaching max tightening and stalls.
Last edited:
DFB
Well-known member
Ya you just reached the torque limit of the tool under battery power
Nothing wrong
Nothing wrong
jonesg
Well-known member
Ya you just reached the torque limit of the tool under battery power
Nothing wrong
thats how mine works, tighten til it locks then final torque by hand.