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Old 03-16-2010, 02:37 AM
emerydc8 emerydc8 is offline
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Join Date: May 2007
Location: Arizona
Posts: 760
According to page 17 of the above pdf, the pressure switch (A7/1s1) is located inside the ASR unit. Have you been able to locate the switch?
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1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles
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