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  #71  
Old 03-17-2019, 11:13 AM
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My driver's side mirror also does the click, click, click at the end of folding out. Works fine otherwise (most of the time) every now and then when I go to unfold the come in and go back out with many click, click, click, clicks. Then the mirrors will not work for the rest of the trip. After leaving them alone for a bit they will function normally again.
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  #72  
Old 03-17-2019, 08:56 PM
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The clicking is the gears jumping teeth. The power stays on for a period of time after the general module sees the signal from the micro switch. The end stop is mechanical. If you have clicking then there is a problem with the gear set.
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  #73  
Old 03-18-2019, 07:08 AM
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so just swapping in replacement gears would fix that?

honestly, I inspected the gears in that motor very carefully and didn't see the the slightest issue with them. given the hardness of the metal gears, would the issue not more likely be that the housing they are sitting in is worn away or something and the gears are not held in as firmly as they once were? but I don't want to get ahead of ourselves either. the bigger question might be to ask why does the motor continue to turn once it has reached the mechanical stop and received a signal from the microswitch?

one thing I did notice yesterday which may or may not be related. when my mirrors come in, the driver side gets to there first. it folds in just a few milliseconds faster than the passenger side. I am wondering if there is some kind of synchronization issue.
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  #74  
Old 03-18-2019, 08:03 AM
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okay so I clicked on the the ancient youtube link from six years ago and was reading the youtube comments and figured out that this motor was used on

BMW 3 SERIES E46 1998-2005
BMW X5 E53 1999-2006
LAND ROVER FREELANDER 1998-2007
ROVER 75 1998-2008
CHRYSLER - JEEP CHEROKEE 1998-2008

the jeep cherokee one caught my eye. should be PLENTY of these in the junkyard right. in any case, I found this video on youtube. lol! look familiar!?

well, who's got time for the junkyard? a little more research and I found this. and this.

there's a bunch of these kits from different sellers on German ebay. the sellers I linked ship worldwide and have english postings. some of them are full on German. I may go ahead and order one of the full rebuild kits and see if that does the trick. essentially $60 to rebuild the entire motor housing. looks like from the youtube video that often times the metal housing is broken....the locator pins break or something. I didn't notice that being the case with mine yesterday but I wasn't looking for that problem either.
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2005 X5 3.0 - 71k mi (9.2018) -> 81k 9.19
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  #75  
Old 03-18-2019, 09:31 AM
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It's a poor (not BMW) design because the slightest amount of wear, deflection or misalignment will cause the gear teeth to jump. Even worse, the amount of pressure to overcome the clutch to fold the mirrors manually is at the limit of what the mechanism can handle if everything is perfect and lubricated so is likely to damage the gears or break off one of the alignment pins. Like I said, the stops are mechanical and there will normally be power applied to the motor for a few seconds after the stop has been reached which is why you get the clicking from the gears if everything is not perfect.
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  #76  
Old 03-18-2019, 09:59 AM
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so it's probably fair to say that eventually all these guys will break or act up.

in my case i am going to try the motor housing parts and see if that doesn't fix shore up the slop causing the click. but i can't help but thinking that any fix is going to be a temp fix.

seems ridiculous to me to design it that way...such that the motor continues to exert pressure even after a mechanical stop is reached. especially when it's received a signal from the microswitch that it's reached the end of its travel path!
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2005 X5 3.0 - 71k mi (9.2018) -> 81k 9.19
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  #77  
Old 03-18-2019, 10:12 AM
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Drives me nuts when I go to the car wash and auto fold them as I get out and then the idiot attendants on the other end manually unfold them as they get in to move it. I complain every time.
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  #78  
Old 03-18-2019, 04:40 PM
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Quote:
Originally Posted by Russianblue View Post
seems ridiculous to me to design it that way...such that the motor continues to exert pressure even after a mechanical stop is reached. especially when it's received a signal from the microswitch that it's reached the end of its travel path!
The motor getting power after the stop is reached is not the ridiculous part, it needs to be that way to make sure the mirror gets back against the stop. The crazy part is that the ring gear teeth are smaller than the tolerances that can be maintained with the way the gear is designed, especially since the fixture parts are cast pot metal and there really is no proper bearing surface for the pivot. It'll be more obvious when you take it apart.
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  #79  
Old 03-18-2019, 04:47 PM
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Quote:
Originally Posted by Overboost View Post
Drives me nuts when I go to the car wash and auto fold them as I get out and then the idiot attendants on the other end manually unfold them as they get in to move it. I complain every time.
Actually it might not be a totally bad that the mirrors get manually moved once in a while to keep the clutch from getting stuck. Double edge sword though if the extra pressure causes the gears to jump, parts to wear or locating pin to break . There really is no proper fix unless a person does a little bit of redesign and reassembly with a jig keeping the tolerances closer than original, maybe modifying or at least lubricating the clutch so that releases easier.
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  #80  
Old 05-03-2021, 02:22 PM
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Anyone ever try one of these Chinese eBay mirror motor kits? The listing says "Exquisite workmanship", so it must be high quality.

https://www.ebay.com/itm/392904731342
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