Rear Liftgate won't function automatically - Nissan Armada Forum: Armada & Infiniti QX56 Forums
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post #1 of 25 Old 06-05-2009, 09:34 AM Thread Starter
LCWB1979
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Rear Liftgate won't function automatically

I own a 2004 Infiniti QX56. The remote will not open/close the rear liftgate (the remote works fine for locking/unlocking the car). The switch by the driver, the switch on the upper left back liftgate (Open/Cancel) and the switch under the license plate will not operate the liftgate. The switch under the licence plate does unlock the liftgate but it has to be raised/lowered manually. The door locks, automatic windows and rear left/right widows function normally. I was told by a dealer that the Back Door Control Unit is bad. Befroe I spend $1300 I wanted to check a couple of things myself. Does anyone know where the circuit breaker/fuse is that powers the Back Door Control Unit? (under the hood (which one?), passenger side, etc.) and where is the Back Door Control Unit? I wanted to check the wiring connections to that unit. Any suggestions would be greatly appreciated.
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post #2 of 25 Old 06-05-2009, 02:11 PM
BlakSpyda
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Welcome to CA LCWB1979!

I actually do not have the auto liftgate, so hopefully one of the members who do will chime in soon. I do recall a post here talking about it though! So if I find it, I'l post it.
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post #3 of 25 Old 06-05-2009, 03:46 PM
The Jonah
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Have you considered replacing the battery on the remote? Not sure if this will help...since other fundtions of the remote work. How about holding down the liftgate button for several seconds longer?
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post #4 of 25 Old 06-05-2009, 05:36 PM Thread Starter
LCWB1979
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Thank you for the suggestions. I tried both previously with no success. None of the other buttons work either. It is like there is no power to the Back Door Control Unit which is what I am trying to verify.
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post #5 of 25 Old 06-06-2009, 11:33 AM
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does the liftgate work from the in-cab switch, and the back pillar switch?? Just not the key fob?

Jerry's 06 SE off road
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post #6 of 25 Old 06-06-2009, 01:58 PM Thread Starter
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No, none of the switches will operate the rear liftgate.
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post #7 of 25 Old 06-06-2009, 04:20 PM
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That narrows it down to the unit itself, have you checked all fuses? I had a bad actuater a few years ago (repaired under warranty), so I'm not exactly sure what they replaced. I'll see if I can find the paper work.

Jerry's 06 SE off road
07+ Intake, Injen CAI, JBA long tubes, Gibson Cat Back, UpRev tuned, 08 caliper kit w/ Frozen/Slotted Rotors, Goodridge Stainless Steel Brake Lines, Stillen 2-row/aluminum Radiator, PML pan, TransGo shift kit, 2" PRG lift, Bilstein 5100s, 20" Fuel Pump w/295/60/20 Terra Graps, 4ga. Grounding Kit, LEDs & HIDs, Kenwood DNX-9960 Alpine PDX amps, Kef separates,
(2) underseat subs w/Kenwood 10' slims, Twin Stinger Batteries, remote start & protection by Python

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post #8 of 25 Old 06-06-2009, 05:04 PM
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Rear Lift Gate

This may sound crazy but make sure ur window on ur tailgate didn't accidentally get popped open.i had the same problem and thats what it was.
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post #9 of 25 Old 06-06-2009, 11:29 PM Thread Starter
LCWB1979
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No, that doesn't sopund crazy. The auto lift function will not work if the rear window is open. I checked that and it is completely closed.
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post #10 of 25 Old 06-07-2009, 02:21 AM
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Sorry my friend thats all i got...............
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