2009 Z4 Hardtop Stuck Video Included

hknkznci · 06-05-2020, 06:41 PM

Hello,
My 2009 BMW Z4 has that problem.If i push it it works but in other try it's happening again.What should i do?

KennyP · 06-06-2020, 03:05 AM

Looks like hydraulics are not powerful enough to lift the roof... So i would look into that... Hydraulics fluid level can be checked. Maybe its low?

Saw this in repair manual:
https://www.newtis.info/tisv2/a/en/e...e-top/8Izcdy22

If that shows fluid level being OK...

Maybe pump itself not creating pressure?
Hydraulic cylinders not actuating under pressure?
Lines not sending pressure to cylinders? Damaged line. Maybe one side has pressure to actuate but other side doesnt. There are two cyllinders doing the job: left and right.

http://bmwfans.info/parts-catalog/E8...op/hydraulics/

RobbiZ4 · 06-06-2020, 04:57 PM

Does there exist a history of roof issues? I.e. did anybody do some repairs in the past.

What about the repeatedly lifting of the roof shell: does it "dance" itself like on the video or do you press a button repeatedly?

jparnes1 · 06-06-2020, 08:16 PM

Operate your roof only with the engine running

RobbiZ4 · 06-07-2020, 03:14 AM

Quote:

Originally Posted by jparnes1

Operate your roof only with the engine running

Nonsense. Thats only an option, if the battery is weak and has not been replaced in the last 10 years.

bryanhoag · 06-07-2020, 09:12 AM

I think RobbiZ4 needs to do a US tour and diagnose/fix all of our tops!

RobbiZ4 · 06-10-2020, 01:20 PM

Quote:

Originally Posted by bryanhoag

I think RobbiZ4 needs to do a US tour and diagnose/fix all of our tops!

Good idea, just read another crazy post about the same topic.

06-05-2020, 06:41 PM	#1
hknkznci Registered 0 Rep 2 Posts Drives: Bmw Z4 35i 2009 Join Date: Jun 2020 Location: United States iTrader: (0)	2009 Z4 Hardtop Stuck Video Included Hello, My 2009 BMW Z4 has that problem.If i push it it works but in other try it's happening again.What should i do?
	Appreciate 0 Tweet Quote

06-06-2020, 03:05 AM	#2
KennyP Lieutenant 141 Rep 459 Posts Drives: 2009 Havana E89 Z4 Sdrive35i Join Date: Apr 2016 Location: Estonia iTrader: (0)	Looks like hydraulics are not powerful enough to lift the roof... So i would look into that... Hydraulics fluid level can be checked. Maybe its low? Saw this in repair manual: https://www.newtis.info/tisv2/a/en/e...e-top/8Izcdy22 If that shows fluid level being OK... Maybe pump itself not creating pressure? Hydraulic cylinders not actuating under pressure? Lines not sending pressure to cylinders? Damaged line. Maybe one side has pressure to actuate but other side doesnt. There are two cyllinders doing the job: left and right. http://bmwfans.info/parts-catalog/E8...op/hydraulics/ __________________ 2009 35i DCT Havana brown with ivory white interior. Mods: Cobb stage 1+FMIC, Wagner EVO1 FMIC, BMS DCI, KW V3 suspension, M3 front control arms, Hardrace RTAB, Michelin Pilot Sport 4S tires.
	Appreciate 0 Quote

06-06-2020, 04:57 PM	#3
RobbiZ4 Call me "Dr. Bob" 126 Rep 400 Posts Drives: BMW Z4 E89 sDrive 30i Join Date: Jan 2018 Location: Munich, Bavaria (Home of BMW) iTrader: (0)	Does there exist a history of roof issues? I.e. did anybody do some repairs in the past. What about the repeatedly lifting of the roof shell: does it "dance" itself like on the video or do you press a button repeatedly?
	Appreciate 0 Quote

06-06-2020, 08:16 PM	#4
jparnes1 Colonel 241 Rep 2,387 Posts Drives: 2016 340i, 2012 Z4 35i Join Date: Jan 2010 Location: NY iTrader: (1)	Operate your roof only with the engine running __________________ 2016 340i XDrive, EBII/black, 6 MT, M Sport, Track Handling, Cold Weather, Tech, Lighting, Driver Assistance Plus. 2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, M Sport, CW, PP, PS, NAV, CA.
	Appreciate 0 Quote

06-07-2020, 09:12 AM	#6
bryanhoag Second Lieutenant 43 Rep 248 Posts Drives: 2013 Z4 sDrive 35i 6MT Join Date: Jul 2018 Location: Charlotte, NC iTrader: (0)	I think RobbiZ4 needs to do a US tour and diagnose/fix all of our tops!
	Appreciate 0 Quote