The left DHC back and front are the same other than the cable. Same for right.

The length is a lot different like 2" different you can't really connect the cable from the wrong door.

If the DHC cable is basically the right length but won't pull the lever on the DLA far enough to open (but you can manually lift the lever to open the latch), you may have suffered the damage I described that happened to me.

If the outer shield of the cable rusts it can collapse and the inner cable will not pull as far and eventually you can't open the door.

For a quick fix and since you can't buy just the cable, you can use JB Weld to build up some length to the outer shield under the end cap just be careful not to glue to the center cable (I would maybe put some tape around the cable sticky side out.

When using a knock off carrier I will swap OEM cable which is much better made than third party cables as long as it's not rusty.

If the cable is too short vs. too long, it will not release the DLA lever far enough and you won't be able to open the door from inside or outside so always test inside and outside latches before closing the door and reassembling.

There are two notches at the end of the cable, it's nearly impossible to clip into the wrong one, but I think that would cause the problem you describe also.

Another possibility is if the teeth are meshed incorrectly on the lift arm. Look at the photos from my iCloud album.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)