Speedo failure 1st - BMW Luxury Touring Community
 
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post #1 of 7 Old Feb 14th, 2007, 11:23 pm Thread Starter
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Speedo failure 1st

This is a first in the books as far as I can tell. No......not the speedo failure but the problem causing it. The speedo had begun to work intermittently for the past few months. While it was inop the cruise would also fail to set. About 3 weeks ago it failed completely without coming back to life so I decided to look into the problem.

After reading numerous posts of speedo sensor failure I thought that would be the best place to start. I replaced the sensor and no joy. So it seemed time to get serious and undressed her so I could get at the wiring and start checking for a false connection. I was able to borrow a wiring schematic from a fellow Texican and began the journey tracing the wiring from the sensor all the way to the speedo module. You would not in your wildest dreams imagine where all the wiring goes for the speedometer.

Well after following the wiring top to bottom, no bad connections were located. So I loaded her up and set up an appointment with the dealer for some more diagnostics. After 5.84 hours of the techs beating their heads to figure this one out, seems the speedo circuit board had failed.

New speedo $184.55
labor $496.40

Time to do the speedo mod again!

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post #2 of 7 Old Feb 15th, 2007, 10:02 am
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Sounds like a first to me..But I've only been around a couple of years..

Did you mod the original yourself ??

Just wondering if you got a trace too hot and the connection failed at that point..

Possibly could have fixed yourself if that was the case...Who knows for sure..

Kudos on the good try though...


Take Care,

John

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post #3 of 7 Old Feb 15th, 2007, 11:25 am
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Quote:
Originally Posted by bustedknuckles
This is a first in the books as far as I can tell. No......not the speedo failure but the problem causing it. The speedo had begun to work intermittently for the past few months. While it was inop the cruise would also fail to set. About 3 weeks ago it failed completely without coming back to life so I decided to look into the problem.

After reading numerous posts of speedo sensor failure I thought that would be the best place to start. I replaced the sensor and no joy. So it seemed time to get serious and undressed her so I could get at the wiring and start checking for a false connection. I was able to borrow a wiring schematic from a fellow Texican and began the journey tracing the wiring from the sensor all the way to the speedo module. You would not in your wildest dreams imagine where all the wiring goes for the speedometer.

Well after following the wiring top to bottom, no bad connections were located. So I loaded her up and set up an appointment with the dealer for some more diagnostics. After 5.84 hours of the techs beating their heads to figure this one out, seems the speedo circuit board had failed.

New speedo $184.55
labor $496.40

Time to do the speedo mod again!
Man that is strange. Mine did the same thing and per Mr. Shealy and others instructions - I found the problem exactly where they said it was, fixed it just as they said and have not had any problems with it since. Cost - about $3.00 in materials and half hour of my time - which is about another $3.00.

I have no idea how much money I have saved by reading information on the site.

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post #4 of 7 Old Feb 15th, 2007, 11:26 am
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Hey, at least it wasn't the ABS control unit like they first thought. That would have been expensive!

Does that mean you can go on the summer trip?


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post #5 of 7 Old Feb 15th, 2007, 12:13 pm
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For some reason I pictured you sitting by a pool. Then the stitching just gave up on some fat guy wearing a slingshot for a bathing suit
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post #6 of 7 Old Feb 15th, 2007, 8:42 pm Thread Starter
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Quote:
Originally Posted by JPSpen
Sounds like a first to me..But I've only been around a couple of years..

Did you mod the original yourself ??

Just wondering if you got a trace too hot and the connection failed at that point..

Possibly could have fixed yourself if that was the case...Who knows for sure..

Kudos on the good try though...


Take Care,

John
I had done the "speedo mod" myself, but it had been done for 3 years before the problem arose. I have done several others without any problem.

Only a biker knows why a dog sticks his head out of the car window
Stephen Moore
02 K1200LTC Silver
02 Uni-go (skittles reborn)
1975 R75/6 Black Still running strong
BMWMOA# 122791
AMA# 711312
CCR 02,03,04,05,07,08,

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post #7 of 7 Old Feb 15th, 2007, 9:17 pm
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Quote:
Originally Posted by lnowell
Cost - about $3.00 in materials and half hour of my time - which is about another $3.00.
That much for your time eh?!

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