My Jeep has done this also and I've had it in the shop probably 6 or 7 times. They could never figure out why, until once about two years ago they replaced something, now it's doing it again. I took it in again and was going to cost way too much to fix again, and I didn't want to waste the money if it wouldn't last long anyways. The repair man told me when It happens to kinda tap on the key when you put it in if it doesn't work, and it has been helping so far. Put the key in and tap hard with your hand.
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Mine did this too....the latch kept getting stuck. If you put the key in the ignition and unlock the power doors, pull on the gate door (don't open it, just enough to release the latch), and it should come out so the hatch will latch.
Hello. I can assist you. Most likely, your door latch is broken and will need to be replaced. Historically these were metal and rusted due to exposure, soooooo now they are plastic and after a few hundred uses, they break. You can purchase the tailgate handle and replace it yourself but my recommendation is to let the shop do it as it can be a little tricky and often the linkage rods also need to be cleaned and lubricated. The total cost of this repair is generally about $75. Thanks for choosing Fixya!
Which back window are you referring too? The side rear window or the back hatch window? Rear side window, if you can hear the motor turning it is most likely a broken cable located inside the door. Back hatch window, if it is not latching when you shut the window it may be that the latch is in the closed position with the window open. Try unlocking the latch with the key fob window control. Also inspect the latch and spray some lubricant on the mechanism. If possible try engageing the latch by hand with the window open. It should move and latch easily just by pushing on it with your finger. If it does not move freely or will not stay latched you might need to replace it
As for the error code, P0043 HO2S Heater Control Circuit Low (Bank 1 Sensor 3) This refers to the oxygen sensor's heating element. It might be just a loose or broken wire. I would inspect it first before replacing it. As for the location, the O2 sensors are located on the exhaust before the catalytic converter. Your best bet is to get a service manual for exact locations.
I had the same problem onmy dad's Jeep KJ (Cherokee/Liberty) so i went ahead and unbolted the tailgate handle;
First you need to take off the plastic inner tailgate cover (doh), then carefully pry away the the black liner and you'll see 2x 10mm hex nuts, unscrew both. Then on the latch outer side of the tailgate remove the upper 2 torx screws, then loosen one of the clamps of the connecting rod between latch and handle. While pulling out on the handle (needed to clear the mechanism from the sheetmetal) you'll be able to carefully remove the complete doorhandle assembly. There's still one wireloom attached to the handle, this is the culprit, It's the little actuator switch that's need liberal amounts of lubricant such as WD40 or similar. I actually removed the switch and pushed it several times to full stroke after i lubricated it, then reconnected it and presto! The rear window unlocked every single time by means of the doorhandle instead of using the wireless remote...
Easy fix, done in half an hour. Saved you $ 300 on parts and labour
If yor liberty is a 2002 to 2004 it is very likley that the wiring harness is pinched under either the drivers or passengers seat. you need to remove the seats (its only 4 bolts) and lift up the carpet and look at the harness that runs under the seats. I have seen this many times before.By the way i am a Jeep master technicain and have been for 15 years.