Xoutpost.com - Non operable power liftgate

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My situation slightly different. 2008 x5 4.8i

Is it an option I don't have? When I look in idrive ("i"/settings/vehicle-tires/door locks) there is no "tailgate" option like my manual suggests. Thanks in advance!

look at the struts that hold your liftgate - if they are thin and have no wires going into them, you got regular struts. If they are BEEFED up, and have a small cable going into each one, then you got power liftgate.

Quote:

Originally Posted by BMWdiy (Post 1104372)

Thanks for your quick response! I am currently waiting for the usb scan cables to arrive and will scan the car with inpa. I know my issue is somewhat different from the one you had and dealer told me that i need one or both power lifts replaced...i just refuse to believe it. It doesnt make sense to me. I can close the tailgate with the button once and opens every time. Functions like it should until the upper tailgate lock locks onto something. Then no more closing with any button.
Another thing i noticed is that i dont get a trunk open light on the dash...Ever... Maybe the car thinks that the trunk is closed? Can it be that it is why he trunk tries to go up when i press the close button?
Mistery to me still butt hopefully not for too long. I will get to the end of it,no giving up

it feels like hall sensors are not reporting correctly. the hall sensors tell the brain when to stop, and if the gate is open or closed. if a sensor is not reporting, or reporting intermittently then the system may get confused.

From what i remember, the hall sensors are inside the spindles, they are not on the gate or gate frame (not like a security sensor "bug" on a house door).

Check for chaffed cabling going to each of the strut - they are inside a grommet, and you might need to pry the rubber grommet out to see if the wires inside lost any insulation. also, if you "knead" the wire bundle with your fingers, check to see if the light comes on the dash for the tailgate - it may point to a chaffed wire.

There is also the brain for this operation, i think somewhere in the trunk packets...

these types of problems are the worst to trace but it gives you a starting point.

Keep us posted

Quote:

Originally Posted by TerminatorX5 (Post 1109331)

Hanks for the quick response! So if the wiring or brain is bad, should it keep it from acknowledging the tailgate options in iDrive?

I do have very beefy struts, will look for wires tonight, will also investigate whether it could be a fuse issue

if the brain is dead, the GM has no idea that there is a power liftgate (option appears when module is present). On the newer (post i-Bus) cars, sometimes the GM needs to be pre-told about some modules in order to recognize them, it is done in the programming files. But, if you had the power liftgate from the factory, you can run your VIN on bmwvin.com and see if it was equipped so from the factory, regardless of wires or no wires (things might have been changed by previous owner, if you are not the original one)

There is no 40a fuse in slot 99, so I'm thinking there is no automatic liftgate