Another roof query... sorry

t90ark · Post by **t90ark** » Mon Apr 22, 2024 11:54 am

My e89 hasn't been used a great deal lately, and has been sat with a battery conditioner connected. The conditioner, however, rarely shows full. I'm content the conditioner is OK - I've used in on the X5, no worries.

Now, to the roof. If I try to use the roof, I get the red light and 'movement impaired' error. If I drive the car for a short time, I'm talking 10 minutes, the roof will come back to life. Park it up, and go through the process all over again.

I'm starting to lean toward the battery, i know these cars can do some strange things if the battery isnt 100%, but does anybody else have any thoughts?

B21 · Post by **B21** » Mon Apr 22, 2024 12:19 pm

t90ark wrote: ↑Mon Apr 22, 2024 11:54 am My e89 hasn't been used a great deal lately, and has been sat with a battery conditioner connected. The conditioner, however, rarely shows full. I'm content the conditioner is OK - I've used in on the X5, no worries.

Now, to the roof. If I try to use the roof, I get the red light and 'movement impaired' error. If I drive the car for a short time, I'm talking 10 minutes, the roof will come back to life. Park it up, and go through the process all over again.

I'm starting to lean toward the battery, i know these cars can do some strange things if the battery isnt 100%, but does anybody else have any thoughts?

Yup crappy battery…or at least 90%+ probability…always the first thing to swap out..probably one or more cells dying…very few test measurements will discriminate to the point that an E89 is happy..

t90ark · Post by **t90ark** » Mon May 20, 2024 6:39 pm

So, I may be nearer to understanding why my roof is playing up. By using Bimmerlink, I see a roof error A6A3 temperature sensor. Doing some reading, it seems this is caused by moisture- which makes some sense as my boot does leak (I've ordered new vents) and the foam carrier for motor is usually damp. I believe the sensor is located inside the motor - can anybody confirm or deny this? Can the sensor be recovered/ repaired/ replaced?

It's not that the motor has failed entirely, its just temperamental about how long it takes to operate the roof. Oh, I've got salmon relays coming, too.

I'm hoping to save it before it fails completely.

B21 · Post by **B21** » Mon May 20, 2024 7:10 pm

Remove the pump and open it up and dry it out..

t90ark · Post by **t90ark** » Mon May 20, 2024 7:34 pm

B21 wrote: ↑Mon May 20, 2024 7:10 pm Remove the pump and open it up and dry it out..

Is it easy enough to do? Looks like a couple of screws and a plug.

Chippie · Post by **Chippie** » Mon May 20, 2024 8:12 pm

I haven’t done mine but there was a post a few weeks ago about separating the motor from the pump and apparently yes, it just two bolts and the connector.

Chippie · Post by **Chippie** » Tue May 21, 2024 8:16 am

Getting the boot dry is definitely a priority but I still think it’s your battery that’s causing the issue with the roof.

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