In this video I will show you how to code your convertible top to go down with the key on any BMW using Carly BMW. However the easiest way to do this is with The Z4 sDrive35i gets a 3.0-liter turbocharged six-cylinder that produces 300 hp and 300 lb-ft of torque. It's paired exclusively with a seven-speed automated manual transmission (known as DCT Boot/Trunk opening. by FFLNC » Sun Aug 30, 2015 2:53 pm. Hi all, Bought my first Z4 earlier this year and with help from Tug got the roof motor fixed and reinstalled, really enjoying driving the car. Anyway I have a question about lifting the boot lid up. When I operate the switch or use the remote it releases the boot catch but the boot lid According to p.22 of the manual, CA is necessary to open/close the top with the remote. With CA or the Alarm, the top may be operated by holding the key in the door. 3) Press and hold the unlock a second time to unlock the passenger's door and it should roll down the windows. **Maybe** the top will come down as well. Worked for me on the 3 as continuity was making and breaking - also cheaper than BMW diagnostics. Another one is to remove a cover and find unsheathed section of cable then gently pull on each core in turn. There are 9 on the Z3 - 2 for central brake light and rest for boot lock and return circuit. Good Luck. This afternoon, I installed the gap-tech module which allows the roof on the Z4 roadster to be opened and closed with a single press of the roof button, instead of having to hold the button in all the time until the roof is up/down. I can now get in the car, press the roof button briefly for Product Specifications: - Fully E13 tested and certified: E13 10R-02 4133. - Ultra-low power standby mode (less than 0.1mA) - InstallAID LED shows correct installation and status. - Intuitive Setup menu for easy customization. Product Features: Remote Control of Convertible Top. The second-generation BMW 4 Series Convertible has a retractable fabric roof that is a lot lighter than its predecessor. It is able to open or close in 18 seconds even when travelling at 50km/h. BMW Group notes that the “newly developed panel bow soft-top roof marries the strengths of a retractable hardtop and the puristic appeal of a fabric Back in February, I purchased an old Z4, one of the prior decade’s smattering of folding hardtop convertibles. Nearly extinct today, such a roof arrangement is reserved for high-end European exotica, the C8 Corvette, and the Mazda Miata RF. Over these last months, the past-tense nature of the car I’d bought came to mind more than once. And that’s unfortunate because the Z4 is pretty Bearing in mind I am a new owner myself an in no way a Zed expert and most of what I've learned has come from this forum. Anyways, As mentioned, it might simply be grime or gunk in the mechanism. Should you get the door open, clean it out with a form of degreaser and remove any bits that are visible. rrWxSs.