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The last two evenings when it was -10 to -15F temperature my Ranger would not start. It was like the battery was dead, although it was charged. Turn the key and there is nothing, although my interior light would work. No head lights, no power steering, no 4x4. I got an E code on the dash. When I would turn the key the fuel pump also would not cycle. We hooked up an external battery pack thinking it was a battery issue, but we had the same issue. Even hooked the battery pack up directly to the terminals and everything was still dead, minus my little LED interior light. Then randomly on try number 25ish of cycling the key to the ON position the fuel pump ran and it fired right up and worked fine. Once it warmed up I turned it off and it fired up multiple times both evenings. This morning it was -2 and it started fine. I brought it to the dealer and they found no codes. We replaced the ignition as that is the first place they thought to start. I am thinking it may be a wire harness issue and the wires are somewhere are not making contact in the cold and therefore not letting the engine cycle. Very frustrating. Anyone have any similar experiences? It seems to be a crap shoot at trying to diagnose the issue. HELP!!
 

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I've never seen nor had the cold affect the electrical system. I have to wonder if there was moisture that got frozen in the key switch.
 

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I hadn't moved my Ranger in a couple weeks...just to busy. Its in a three sided shed I built for it. So no heat. I had wondered how the battery would hold up in the cold. This morning it was 4*F here. I worked till ten or so, it warmed to 24*F out. It started right up the second I turned the key. Let it sit and run maybe 30 minutes before moving it into my shop where its heated. Tightened up the tire chains and went for a short ride with my son. Even though it was 24* out , with the enclosed cab. It was really quite comfy.....Some trails were complete ice , the tire chains(poor mans tracks) worked great.
 

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Same problem

The last two evenings when it was -10 to -15F temperature my Ranger would not start. It was like the battery was dead, although it was charged. Turn the key and there is nothing, although my interior light would work. No head lights, no power steering, no 4x4. I got an E code on the dash. When I would turn the key the fuel pump also would not cycle. We hooked up an external battery pack thinking it was a battery issue, but we had the same issue. Even hooked the battery pack up directly to the terminals and everything was still dead, minus my little LED interior light. Then randomly on try number 25ish of cycling the key to the ON position the fuel pump ran and it fired right up and worked fine. Once it warmed up I turned it off and it fired up multiple times both evenings. This morning it was -2 and it started fine. I brought it to the dealer and they found no codes. We replaced the ignition as that is the first place they thought to start. I am thinking it may be a wire harness issue and the wires are somewhere are not making contact in the cold and therefore not letting the engine cycle. Very frustrating. Anyone have any similar experiences? It seems to be a crap shoot at trying to diagnose the issue. HELP!!

Hey I just came across your problem and wondering if you found a solution on what it was yet?, I'm having the EXACT same problem, we got a cold front of wind chills of up to -40 deggrees celcius and i go out ice fishing and when i go to start the bike back up the first day yesterday, it didn't start right away i had to try a second time, but my lights never came on and nether did my 4x4, nether one would work so i turned the bike off and restarted it and it cleared it all up everything worked just fine once it ran for a few seconds. Now i went out today to go ice fishing and I had the EXACT same problem but it started right away, but no lights and no 4x4, so I turned the bike off and turned it back on and everything was fine again, something seems fishy here
Let me know if you found anything, my bike was bought in october, and only ever rode on the roads around home and did 1 day of trail riding on snow covered trails, no water nothing was submerged AT ALL
 

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I suspect some moisture in the key switch.
 
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