E89 roof won't open

Dacos

Dacos

Member
 Toulouse
Hello ! I have a 2010 E89 Z4.
Since a couple of weeks, the roof doesn't open anymore. When I press the open button, windows go down and then, nothing... Doesn't even try...
The light of the opening button goes red (not everytime) and no message.
Once, my trunk refused to open, but only happened once.
My battery is not the issue, I check the fuses, and I ordered "salmon relays" to replace them, they were quite old. Hope it will solve the problem.
Any ideas what else it could be ?
 
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Yes, I know Cahors. Nice town ;-)
I am trying to solve this, maybe the salmon relays will solve the problem.
Tell me when you come if you come. Thanks a lot
 
Just changed the "salmons". As you predicted, it didn't help.
Waiting for my OBD reader for the next step.1775832311608.jpeg
 
Hello again !
Just received the OBD reader. Got 3 errors for the roof:
A690 / A692 – Hall sensors => correction left and right microswitches
A698 – Roof open
Got a lot of other errors also, not for this section... Need to check them also.
Gonna look through the forum how to fix this :thumbsup:
 
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A690 and A692 are the left and right boot closed micro switches. Cheap and easy to replace, once you get the roof into service position.
 
Here is a tutorial I did.

Sorry to hear that BMW parts prices have exploded. I paid $25 each about 3 years ago.
 
javis20 said:
Sorry to hear that BMW parts prices have exploded. I paid $25 each about 3 years ago.
Click to expand...
Just have a look at my price tracking page of roof components. There was a heavy jump for many parts around March 1st, 2026:

⌛ Z4 E89 - Ersatzteilpreiserhöhung - die nächste Runde! ☕

Gleiche sprunghafte Entwicklung bei den Mikroschaltern Koppelverschluss für die 3er E93 und 4er F33 Cabrios: E93 03/2024: 54377188599 links 27€ , 54377188600 rechts ca. 25€ 05/2025: 54377188599 links 56€ , 54377188600 rechts ca. 31€ 01/2026: 54377188599 links 56€ , 54377188600 rechts ca. 69€...
www-zroadster-com.translate.goog www-zroadster-com.translate.goog
Screenshot_20260411_180310_Firefox.jpg

Dacos said:
... and roof won't open...
Click to expand...
That is one preventive task in my recommendations to avoid this situation:

⌛ E89: Collection of the typical age-related defects in the roof environment
 
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Dacos said:
Someone discovered they could turn a conception defect into more profits
Click to expand...
Well, we see these jumps on many parts over all component-groups and even models since years.
Won't really imagine, what the Iran/Hormuz crisis will bring us in the near future.
 
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I seem to have a "battery" issue... I am looking into it
I have the A559: KL30g_f shutdown error code that keeps coming up even after resetting the errors codes.
My battety seems ok, a check by a professionnal says it is ok, with a "battery state of 92%" (state, not charge level)
But:
1/ I have the "low battery warning" after 2mn if I don't start the engine + OBD reader sats battery level is 35%
2/ after the heavy rains yesterday, I have water in the battery compatment, wasn't there 2 days ago
 
Dacos said:
I seem to have a "battery" issue... I am looking into it
I have the A559: KL30g_f shutdown error code that keeps coming up even after resetting the errors codes.
My battety seems ok, a check by a professionnal says it is ok, with a "battery state of 92%" (state, not charge level)
But:
1/ I have the "low battery warning" after 2mn if I don't start the engine + OBD reader sats battery level is 35%
2/ after the heavy rains yesterday, I have water in the battery compatment, wasn't there 2 days ago
Click to expand...
First step almost always on E89s with mysterious electrical problems is get a new appropriate battery ..then see what happens..
 
Dacos said:
I seem to have a "battery" issue... I am looking into it
I have the A559: KL30g_f shutdown error code that keeps coming up even after resetting the errors codes.
My battety seems ok, a check by a professionnal says it is ok, with a "battery state of 92%" (state, not charge level)
But:
1/ I have the "low battery warning" after 2mn if I don't start the engine + OBD reader sats battery level is 35%
2/ after the heavy rains yesterday, I have water in the battery compatment, wasn't there 2 days ago
Click to expand...
Also check the little storage compartment on the left hand side and also under the trim on the right where the parking and roof modules are, if there’s water there then it’s probably the seal around the top edge of the boot that leaking, the sealant dries out and turns to powder, also check the rubber seals around the rear lights, it should be seated around both sides of the bodywork.
 
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