Vx8300 stuck in car kit

I just ran into this problem myself (besides that fucked up white main screen i have). So after reading all these other solutions i played with the thing and found that its one of the right-most pins in the charging port. Probabily a pin touching the metal housing or another pin completes the same electrical circuit used to determine if a car kit is hooked in. I figured this one by shoving a knife through the opening to clear out any debris and every-swipe made the "car kit" banner dissappear. so check for pins touching something it shouldn't. ( i said F-it and ripped that pin out!)

Hope this helps more

Go with Stonerhippie's solution!  I tried the tin foil thing, the resetting, the alcohol, didn't work.  Finally I looked inside the charging port and saw that a couple of the rightmost pins were crushed down a little, so I took a pair of tweezers and carefully pushed them around a little, away from the side of the port, and the Car Kit thing disappeared immediately.  Thanks!

OK here is an easy fix for that... you either need 99-100% rubbing alcohol or an item called tech spray which is usually sold at most hardware stores. get an old toothbrush and get the alcohol on the toothbrush and use that to clean the charging port. If that doesnt help then take the charger and plug it in the phone and wiggle it around ever so lightly. That should take care of it.

I sprayed industrial electrical circuit cleaner into the charging port (nothing to loose) followed by compressed air form my air compressor and it fixed the problem. Verizon could do the same thing for their customers. But the $$$$ get in the way.

None of the proposed fixes worked, so I took two aspirin and watched "Cedar Rapids" twice; first time laughed, second time cried. Sweet little movie.
Next day I put phone, with charging port ******* directly upward, in sun for 4 hours to bake. Then I worshipped sun when its drying effects got rid of dreaded Car Kit.

I tried stonerhippe's solution of playing with the right most pins with a paper clip. Car Kit flickered, but kept coming back. Then I read nos7116's solution. I didn't have rubbing alcohol, but I had Purell. I shoved a whole mess of Purell into the charger end (good idea to pull the other end out of the wall first). Then I shoved that Purell dripping end into the phone charging port and wiggled away. Work in 2 secs!!

After mine got wet in a water balloon massacre, I cleaned the charger area with tissue with rubbing alcohol on it and worked for my 8300.

Verizon used to fix this problem before they found it was more profitable to make everyone buy new phones.
The same daughter slobbering problem happenned with me and I took my phone into verizon and they fixed it(couple years ago)-The problem is in the spot where you attach the charger-there is corrosion from the moisture and that corrosion is connecting the little wires that go into the charger-which is what the car kit accessories would do....
You need to remove the corrosion from in between the wires-at the verizon store-the tech guy told me he used rubbing alcohol and a q-tip to clean that area..

Spray compressed air in the charger area! it worked on mine

Your phone probably got damaged where you stick the charger, it may have got wet.
My daughter slobered on my phone in that spot and kick it into car kit mode. Verizon said that it was ruined and had to replace it