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I have not seen this addressed before, but I think it would be great to be able to open the tail cargo door from the inside. I am thinking primarily that such a feature would be handy when car camping, but it might also be a means of emergency egress.
The exterior door handle has a button that actuates a solenoid that unlatches the door and it springs open a bit. It seems that it would be straight forward to wire a switch in that circuit. The switch could be located in the hand hold on the top of the door liner.
On the LR4, it's become a popular modification to add something to the inside of the rear hatch that operates as a mechanical release of the rear liftgate actuator. The actuator can fail over time, and if it fails when the hatch is closed (which it always does), then it's a colossal PITA to get it open to work on it. Thus, the mechanical release serves two functions: allowing you to open the rear door from the inside, and a failsafe if the actuator bricks.
I'm curious if the new Defender has a similar actuator, of if it's less failure-prone. Anyway, adding a mechanical release may be better regardless.
Here's PowerfulUK's video on adding it to the LR4:
Mechanical would be the way to go as then you would not need electrical power, say if the battery was dead. The door lock circuit I believe is normally live, that is not dependent on the ignition being switched on.
I have to add, one time when I was out camping for a few days the battery went flat and I could not open the rear door ... had to jump start my car and only then could I get it to pop out.
Perfect!! Everyone else beat me to it and it's now backordered. At least I signed up for the product alert when it happens. Warms my heart that they are leading the market here.
I bet this would be super cool install. What I'm not sure of is
1) Given the wiring in the door, if a dog hit an added switch, would the door unlatch and potentially open when the Defender doors are locked?
2) And would it open if doors are unlocked and car is moving (or stopped in traffic, etc).
Either would be a big ruh roh with rowdy dogs like mine -- or is the power switched off to the latch while moving or if doors are locked. Guessing it is... so it's likely "if the door can't be opened from the ouside, the additional button inside on the same circuit also wouldn't activate the un-latch.
For cosmetics of the switch... Not sure about depth behind various areas of the interior Defender tail door panel for mounting options. Two genuine switch ideas could be a very clean install... either the LR3/LR4 lower tailgate switch w/ rubber cover, or maybe the Evoque switch?
Last edited by nashvegas; Jun 23, 2022 at 04:42 PM.