JK-100NR 12V Instant Automatic Car Jack with Remote Control

The reason it gets only 2 stars is because it has a bad design flaw. It uses a connection piece (it's like a U-joint that connects the motor to the lift gate) inside of it that's made of a ceramic type of material. After lifting a vehicle so many times (in my case, a Ford Fusion 2.5L SEL), this piece will stress and break! A mechanically inclined person can 'rigged' a repair, but nobody should have to do that, especially with using it on such a lightweight car. The good part about it is, it arrived brand new, and the jack is VERY easy to use...actually, everything about it is great, EXCEPT it's reliability concerning that internal connector I mentioned!

THIS IS THE BEST THING I LOVE IT

This thing was garbage right out of the box. Was able to lift my car one time then quit working completely. Then it randomly released when the hood was shut and fell on me while I was working under the car. Wouldn’t recommend it for anyone!

When used as instructed, this product really makes tire changing easier especially when used with the power wrench.

I used this jack to take off my wheels for a brake pad replacement and rotation. It did the job but I had to tweak a few things first.1-The plastic cap on top of the jack will break off if you don't get the jack positioning exactly right. The point of the plastic piece appears to be for preventing the jack from slipping off the vehicle jack point. If you get the slit of the vehicle jack point (under the car) exactly in the slit of the plastic cap, it will prevent the jack from sliding under, or out from, the car. The problem is you have to watch it every step of the way as you raise the jack and make sure you get this exact. Otherwise, the pressure will break this plastic piece as it did on mine. I would recommend the company use a metal piece instead of plastic. I think by the 4th time I jacked up my car, it snapped in two. This won't hinder the functionality of the jack, rather its a safety measure.2-The description says it will lift the weight of cars/vans/suv's/light trucks. This is not true considering where the source of your power is coming from. I have a basic sedan (subaru impreza) and when lifting any wheel, as soon as i get to where the wheel is to be lifted off the ground, you can hear the unit struggle a little and slow its ascent. At this point, it's where the unit draws more power than your cigarette lighter can provide. It blows the 10amp fuse on my cigarette lighter every time. From what i found, all cigarette lighters are 10amp. The unit can draw 15amps before blowing its fuse. So when lifting the wheel, it tries to draw more amps than the ligher can supply and *POP* goes the fuse, and your stuck with your car in the air. This is a serious fundamental problem considering it is supposed to be powered from the cigarette lighter. I can only assume this would work only with a light compact car.So now onto what I did to get around this power problem.I bought an adapter from radio shack with a female cigarette lighter on one end, and alligator clips on the other. $10. I used this to get the jacks' power directly from the battery. This worked like a charm. It now ascends without any struggle and doesn't blow any fuses. It has a 15amp fuse and that hasn't blown, so I assume its drawing somewhere between 10 and 15 amps to get the car corner fully lifted. For heavier vehicles, you'll definitely have to get your power directly from the battery. Since I was at home doing this work, I decided to use one of my garage outlets instead of my battery. I had an old car battery charger laying around that did the ac-to-dc conversion perfectly. The great thing about this setup was that i had 3 settings on the charger, 2amp trickle, 10amp fast charge, and a 50amp start. On the 10amp, as it did with the lighter, it was slow to ascend when it started taking the full weight. However, on the 50amp setting, it lifted the car no problem.To make this product a 5 star, the company would have to do this...1-change the plastic guide/no-slip piece to steel2-change the power input adapter from a cigarette lighter to alligator clips, make the cables longer so that coming from the battery, the jack will easily reach all jack points of the vehicle3-provide a way for the jack to be manually lowered. At one point the remote would not work when lowering but still worked raising. Also, when blowing a fuse, there is no way to lower it so your car is stuck. Also, if the motor were to fail, would need a way to lower as well.

As a mail carrier who drives a lot of gravel roads and goes past a metal scrap yard, I get a lot of flats. I decided to try this out and see how it works. The mirror is pretty useless and often flops around. The top of the jack is made out of plastic and broke after one use, but it was still flat enough that I could keep using it. The first time I used it, it went pretty well. The second time, it was really slow, and the third time, the motor burned out halfway up. I have a Jeep Wrangler, so such a big vehicle might have been a bit of a strain on it. Maybe it works better for smaller cars, I don't know.

For three years I've been using the jack and impact wrench to change all four wheels twice a year on my SMART car. After twenty-four wheel changes I can say that the jack and wrench combo worked very well together. At first I thought the mirrors and light on the jack were a gimmick, but after changing 24 wheels in a dimly lit garage I can say that whoever designed this was thinking of me. The SMART 451 has only one lift point on each side and the jack is capable of lifting both wheels off the ground at once (Yeah, I know you are thinking a 16-year old football player could do the same thing, but this jack doesn't require constant feeding). The impact wrench has never failed to break lose any of the lugs or to re-torque them properly and the light on the wrench is as handy as the one on the jack. My version of the jack doesn't have the wired remote, which would seem like a useful feature. I'd suggest getting the bag option that is available, because after several uses there just isn't any way these two items are going to be clean and it acts as a handy place to put a small lug wrench to be sure the impact wrench has properly torqued the lugs. I'd suggest the purchase of a 12-volt DC plug Y adapter to allow both devices to be plugged in at the same time, as well as a lug bolt wheel guide  SMART 451 With Bolts LUG BOLT WHEEL GUIDE TOOL 2010 10 .

It stop working after one month, when I wrote for help in May 2015. I never received any assistance to present June 2015, who can help?