Hydraulic roof pump failure on my 09 z4

[Otago]

Roof cannot close, red light blinking.....Hydraulic unit cooked, no wonder i did smell something when opened the trunk.


Costs (labour + parts) = HK$13K = US$1700......damn!

[nicknaz]

whoa. Sorry to hear about that OP

How often do you use the roof ?

[Otago]

Originally Posted by nicknaz

whoa. Sorry to hear about that OP

How often do you use the roof ?

operated more than 100 times......but less than 200

[Asbjorn]

I must have opened and closed my 09 more than 100 times as well. Any chance you used 3rd party hw with the roof such that it could open and close while driving etc? I almost always operate mine with the engine on and while the car is stationary.

[Otago]

Originally Posted by Asbjorn

I must have opened and closed my 09 more than 100 times as well. Any chance you used 3rd party hw with the roof such that it could open and close while driving etc? I almost always operate mine with the engine on and while the car is stationary.

no 3rd party hardware, factory standard.....i did operate when the car stationary but used key often. Any harm done if using key to operate the roof?

[Asbjorn]

I am not sure, but I prefer not to count on the battery having enough juice to both open the roof and start the car haha... just in case...

I remember it said somewhere that the pump gets hot if you open and close the roof continually. I mean if you open and close it again and again without pausing, like just for fun... so we probably should avoid that

For me it makes sense to just open / close the roof while the car is warming up / cooling down respectively with the engine running anyway.

[nicknaz]

Originally Posted by Otago

operated more than 100 times......but less than 200

Since 09? wow, you barely use the roof.

Did they have any guesses? I almost wonder if it seized up from not being used enough?

[Otago]

The BMW dealer said i may be used the roof too often.....haha!

[nicknaz]

Originally Posted by Otago

The BMW dealer said i may be used the roof too often.....haha!

100-200 is not often.....

[Innovative AutoConcepts]

yikes. . . That is expensive to fix. . . DO you have warranty on the replacement part?

[Otago]

Originally Posted by StevenChanApproved

yikes. . . That is expensive to fix. . . DO you have warranty on the replacement part?

yes......two years warranty for the replacement part.