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02-23-2013, 12:47 PM
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#10
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Drives: 08 328i
Join Date: Aug 2011
Location: United States
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Quote:
Originally Posted by VTECaddict
The sensor works by wearing out fine wires to increase resistance. More resistance means its more worn.
The car expects minimal resistance (new sensor) when you reset it. If it detects a worn sensor when you reset, it will throw out the red service warnings.
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Nicely explained!
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