Tacoma :: 2007 - Electronic Hubs Always Locked In?


Feb 6, 2012

I have a 2007 Tacoma 4x4 and until recently everything was fine. I even got almost 75000 miles out of the stock tires. About a month after the new tires the battery died so I replaced it. Since then the front seems to have a slight vibration and a slight noise. Kinda sounds like when you hear a 4x4 with big mudder tires on pavement. Both the vibration and sound are so slight that others cannot hear or feel it, I just notice having driven it for over 5 years, mostly highway.

When rotating my tires I noticed the front "axles" (don't know the proper name) turn with the tires. With the wheel off I tried holding the "axle" while turning the disk brake but it was as if the hub was locked in. A neighbor who seemed to think he'd heard of it before asked if I'd changed out the batter or had to disconnect it which of course I had. He said that maybe the electronic hubs were not unlocking. The tires still spin freely as the transfer case is not engaged but both of the axles coming from it spin with the tires.

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I get a very bad vibration when my hubs are locked in. If i unlock the hubs it goes right away. It don't matter if the transfer case is engaged or not.

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A relative's '04 EX Limited is having an odd problem. He put it in "4x4 Low" to back a trailer into a barn and after the task was complete the transfer case wouldn't shift out of low range. He tried multiple times and after about 5 minutes of fiddling around with it, it shifted into 4-Hi but wouldn't go back to 2-Hi. The hubs are in the "auto" position and will not manually unlock (the selector turns). 4x4 indicator on dash is not lit. Could the dash switch be bad? Why would the transfer case and hubs act up at the same time?

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I have just started to have this problem or what I think is a problem. When the electronic rear axle is locked and in icy conditions I am getting clunking sounds out of the rear end sometimes. Its hard to explain but it sounds like it is slipping in and out of engagement. Sometimes it works fine or what I think is fine and locks both wheels together and I get no sound at all. I switched off the traction control thinking that the sounds I was hearing were a result if it kicking in but this didn't change the sounds the rear diff is making.

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Ford 7.3L Power Stroke (1999-2003) :: Grinding When Hubs Are Locked

Warn Premiums, installed them and now the 4x4 is engaging, but still have a grinding issue. When the hubs are locked and the switch is in 2 wheel drive, the frond end is grinding, if I switch it to 4 hi, the grinding goes away.

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Ford Super Duty (1999-2016) :: 22K With Hubs In Locked Position

Its a 2016 F-250, 6.2L gas truck with the electronic shift on the fly transfer case.

I have put right at 22,000 miles on it like this, frequently at 70-80 mph.

What are the odds I have damaged it and is there anything I should do now that I discovered it - other than put them both in "AUTO".

Truck has been to the dealer twice and not once was this noticed. They blamed the squealing on the brakes which I knew it wasn't.

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My last set of actuators didn't last long My vacuum is too low under hard acceleration... Actuators partially engage leading to early failure.

I'd like to take an actuator apart, modify it so it's always locked in. Some loss of mileage? Other ramifications?

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Well long story short, I had the the factory hubs in my 04 f-350 and I was driving down the road and it started making this horrible popping noise. So I pulled over and couldn't find anything and just curiosity locked in the hubs and all was fine. Made me think my hubs were bad, so I went and bought the warren premium hubs, installed them. Went for a drive and still the same noise is there when they are in free spin. But once they are locked in its fine. What this could be? Wheel bearings?

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I'm getting popping and such so I think I'm locked while turning.

Also.... IS there a way to check the COPS with a multimeter? I think I got a bad one.

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Just got done with a ball joint replacement on my 2003 F550, everything went together great, just as it should. Until I got to the drivers side hub lock.

I have Mile Marker 449s/s manual hubs. Turn from free to lock and theres this loud clicking sound about halfway to LOCK (passenger side doesn't do this). Hub will stay locked for about 2 rotations, then it unlocks and makes a clicking sound. You cannot turn the hub back to FREE, it gets halfway and stops. I tried forcing it and broke the spring fingers inside. Have a new set on order.

Is this a locking hub issue or an assembly error? I was going to take these steps.

- Take passenger side hub lock off and see if it operates normally or same on drivers side.
- If same, remove axle and re-seat/re-assemble everything again

Anything to specifically check? All the parts went back in, washers were in correct order, outer snap ring is in groove.

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