How do I keep retractable hardtop from squeaking

There are lot of videos in this link. Opening and closing an electric or hydraulic hardtop is always going to be difficult because they are so heavy. I had a friend with and Xi5 and he had the soft top / hard top option and he had pulleys and a winch to lower the hardtop because it was only just manageable for 2 people to lift.

The best plan is to get it fixed for automatic operation.

https://www.google.com/search?q=2010+bmw+328i+hardtop+open+manually

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Open the trunk, remove the plastic jamb cover and then the interior cover from the inside of whichever side you want to remove, the remove the plastic wing nuts, and the tail lamp assembly should pop right out allowing you access to the bulb housings which twist lock in to the back of the housing. Hope that helped!

sounds like the control module for top is bad, if no comucation to computer for top the computer must be bad

its no lying to you it has to go to dealer for repair due to how system is designed you need the proper scan tool to repair problem.

My 986 does the same thing. I realized that opening the door made the squeaking stop. Assuming it was cause by the the door rubbing against the jam, I tried to quiet it using tape (as a buffer) , silicone spray, grease, etc. Sorry to say, no luck yet. I'm thinking of just removing the door. Well, actually both doors to keep it symmetrical. Let me know if your squeak is caused by the same thing and if you find a solution which is better than mine.

If you can hear a squeak from the brake it is an indicator attached to the brake pad to let you know it is time to change pads. If it is not releasing you will generally have a pull to that side when driving. Disc brakes do not move away from the rotor as drum brakes do from the drum. They only apply pressure to the rotor or release pressure but stay in contact with it. The squeak is designed to keep you from running the brakes down to where the rotor would be damaged.

Try using a thicker lubricant...The stickiest is chain & bar oil for chainsaws. Not good for internal stuff like engines or gearsets but really good on external parts.(locks, hinges etc) I keep a hypodeemic nerdle full of it in my tool box!!! (use it on firearms and fishing reels too!!!)

DRIVE IT OFF A CLIFF!

roll both windows all the way down and hold the buttons for 5 seconds, then roll both windows all the way up and hold the buttons up for 5 seconds.this resets all of the computers and sensors for the retract system...

AC pump clutch bearing worn