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#1
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SAS - steering angle sensor fix: $0
Since we have three cars and two drivers, I decided to take the sensor off before buying a new one, and maybe take it apart to see what was wrong. Well, the wipers on the triple-track potentiometer were completely borked. So I cut apart several Bourns 3299 trimpots and harvested the wipers from them. Then cut the remains of the old wipers from the SAS housing's springy tabs and clumsily soldered the new wipers in place. They're ugly in this picture, but I trimmed away some of the side ones and measured to be sure they tracked in the right spots. The way this works is the sensor checks resistance between the tracks at 90 degrees apart. The center of the three tracks has contact to both wipers, and the inner and outer tracks connect to the outermost and innermost wipers. This gives a continuously variable resistance since the steering moves over 1200 degrees lock to lock. A quick clean of the potentiometer surfaces with some control cleaner followed by a few drops of De-Oxit and I put it all back together and in the car. Plugged in the Foxwell NT510 to see if it worked. Success: https://www.youtube.com/watch?v=AzUi...ature=youtu.be Drove it around a bunch today, and no 4x4 light. The repair was free since I had a box of the potentiometers kicking around. If you had to buy them, they're about a buck each.
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'04 X5 3.0 5AT with 300,000+km - Black '08 535xi 6AT with 290,000+km - Titanium Silver |
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#2
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Excellent contribution! Thanks!
AM.
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E70 2010 3.0 M57 AT Titanium Silver with Black Leather E53 2004 3.0 M54 AT Toledo Blue with Gray Leather E83 2008 3.0 N52 AT Silver Gray Metallic with Black Vinyl E46 1999 2.8 M52TU 5MT Black with Tan Leather 250K+ miles (Sold, but not forgotten) |
#3
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Is pretty awesome and amazingly simple... for BMW
Nice work!! |
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