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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 02-15-2007, 11:39 AM   #1
schnejerator
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stuck instrument motors after DIY

Anyone who has lost their tachometer, speedo, etc. when replacing gauge faces (specifically after removing needles) may find this useful... Some issues came up on the thread Gauge Face Installation DIY. I know this is probably only one or two other people out there who have had this happen, but nonetheless here it is...

If a gauge won't move freely (or at all) the motor is likely sticking in the shaft somehow. I accomplished a repair, which worked (better than no tach!). First, you must fully disassemble your panel. That means all the needles, faces, EVERYTHING down to the printed circuit board.

The Switec stepper motor is the same for all the gauges (Tach on top, MPG below it):


You must *carefully* open up the case for the motor by depressing the tabs with jewelers screwdriver, and you have two halves of the motor:


With the back part of the motor:



Then, you can remove the main white gear and shaft from the motor front (needle must be removed). This takes some finesse to get it around the metal tabs of the coils. Upon examination, my problem was in the extruded plastic shaft from the primary gear (shown with needle for clarity). The shaft had deformed when I reinserted the keyed shaft (which shouldn't've come out in the first place).

I shaved and sanded that shaft down to ensure it was round, and placed it back in the front motor casing to check for smooth rotation between the stops. Carefully reassemble, and you will be back in business. Re-calibrate as normal, etc.

Just like new:



Now, for the good stuff: I found the distributor for the stepper motors that drive the instruments, and now have some extras (part XC5-589, formerly X15-589). $25 plus shipping for you guys. I think replacement is going to provide a better fix in the end, and a WHOLE lot cheaper that a new gauge cluster!!! Will update with DIY for that afterwards.

Hope this helps the few (very few) of you who have had a similar problem...
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Old 02-15-2007, 07:27 PM   #2
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Great write up man! I know of at least two other forum members that have had this issue. When you have a chance post a link for the stepper motors... Take care.
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Old 02-16-2007, 09:34 AM   #3
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stepper motors are swiss built and it was tough to track them down... the U.S. distributer will only sell minimum quantity of 4, so I have three i'd be happy to sell at my cost ($25 + shipping).

should arrive late next week - i'll post the diy for that replacement
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Old 02-16-2007, 09:37 AM   #4
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motor info: http://www.microcomponents.ch/downlo...XX_01.SP.E.pdf

distributer contact:http://www.microcomponents.ch/downlo...00_07_BG_E.pdf

chevy uses a *slightly* different version in the silverado, which are a dime a dozen and available on ebay, etc. for some reason, when chevy installs them into a car they fail. never heard of that with the bimmers...
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Old 02-09-2008, 09:10 PM   #5
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I'm not sure how to work the tabs to open the motor. Could someone show a picture of how to work the tabs Thanks
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Old 02-11-2008, 10:54 PM   #6
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DUB check this out hope it helps...

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Old 04-14-2008, 05:37 PM   #7
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After about 10 weeks of driving without a working speedometer, I finally got a cluster in the mail today. I replaced the stepper motor for the speedometer and I'm back in business! FINALLY!!!
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Old 09-17-2009, 11:54 AM   #8
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For anyone looking to replace:

Stepper motors have been superceded, new part number is X25.589 and they're even cheaper . Hit up http://steppermotorsonline.com/ - I think his name is Murugush (sp?)...

Don't forget to get a good de-soldering tool.
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Old 02-01-2010, 04:08 PM   #9
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Some time ago I ended up breaking one of the coils on the back of the gauge cluster when trying to fix the gear set. The steppermotor website just shows the back case of the motor. Does anyone know if this purchase includes the ENTIRE motor (Gears, coils, etc)? If not, what does it include?
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Old 02-07-2010, 07:35 PM   #10
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ok, so I purchased 6 instrument motors and soldered them on the dash. Installation was VERY easy, a lot easier than I thought it would be. Problem is, I dropped the middle screen and half of it is not visible now. Does anyone know where to source this part? Numbers on it are as follows:

00193233-019 011 (Side)
3322 126 8415.1 (Front)
LPH5751-2 (Side)
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Old 09-22-2010, 03:54 PM   #11
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thought i'd jump in even though this is an old post and some of the links to buy the stepper motor are defunct.

installed a bimmian m3 style face. all went well, except for the problem mentioned above. when i pulled the tach needle, the entire needle that is attached to the motor came out, not just the needle itself. tach doesn't work properly now. think it is just luck of the draw whether it gets stuck to the motor or not.

anyway, found the stepper motor x25.589 through this guy on ebay:
http://myworld.ebay.com/ebaymotors/gaugerepairman/

$7.50 including shipping. don't have to buy a bunch a costco like quantity to fix one stepper motor

since my soldering skills suck (i had some of the strangest looking slot cars growing up) i will take everything to a local speedometer shop to see if they can do the repair for me.

thanks to schnejerator for the original post.
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Old 10-01-2013, 05:56 PM   #12
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so glad i found this thread...repair shop quoted me $450-$500. gonna cost $22.50 for 2 steppers' shipped
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Old 04-14-2017, 08:42 PM   #13
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Nero post alert! This thread saved my arse! Thanks a ton.
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