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#1
09-24-2002, 10:48 PM
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Speedo Madness @ International Border
This is the weirdest thing... whenever I cross the border from US to Mex or Mex to US... while waiting in line close to the actual crossing, my speedometer goes haywire!! It flips up to 140 mph, and back down, and back up, and back down... it's crazy... Why is this happening!? Some sort of interference or what!?
THanks for any information!
__________________
2006 E350 w/ 155k miles (Daily Driver) Previous: 1993 300E 3.2L Sedan w/ close to about 300k miles 2003 E500 Brilliant Silver (Had 217k miles when totalled!) 1989 300E with 289,000 miles (had for <1 yr while in HI) 03 CLK 500 cabrio (Mom's) 2006 C230k (Dad's) 1999 S420 (Mom's/Dad's) 2000 C230k Sport sedans 2001 CLK320 Cabrio (Mom's) 1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!) 
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#2
09-25-2002, 01:56 AM
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cool!
Don't you believe in UFO's?
 I think they check for radioactive material at border crossings now -- some have these huge machines that the rigs drive thru. I'd bet that's what's causing the speedo mayhem.
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-Paul- '01 E430, Sport 72,000 mi '98 C280, 126,500 mi
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#3
09-25-2002, 04:05 PM
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Probably a radiated imunity problem. Emissions in the spectrum somewhere is causing common mode voltages to occur that causes the instrument cluster to do wierd things. Maybe from a radar of some sort.
I heard of a case the other day where Ford had to buy back a customer vehicle (Navigator) this month because the cluster would totally reset on her way to work. Only on a certain side street and only when going a particular direction. I think this was in Texas somewhere.
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Michael LaFleur '05 E320 CDI - 86,000 miles '86 300SDL - 360,000 miles '85 300SD - 150,000 miles (sold) '89 190D - 120,000 miles (sold) '85 300SD - 317,000 miles (sold) '98 ML320 - 270,000 miles (sold) '75 300D - 170,000 miles (sold) '83 Harley Davidson FLTC (Broken again) :-( '61 Plymouth Valiant - 60k mikes 2004 Papillon (Oliver) 2005 Tzitzu (Griffon) 2009 Welsh Corgi (Buba) 
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#4
09-25-2002, 06:08 PM
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I doubt it's radiation detection devices... they're passive and don't emit anything.
Radar was my first thought, also. Next time you're there, the way to check for radar is to turn on your radio and listen for a short, harsh buzz that repeats itself every 10 secs or so. I used to hear it when I worked at Alameda NAS. Never been to S. California. Is there a base nearby at the border?
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95 E320 Cabriolet, 169K
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#5
09-25-2002, 06:31 PM
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Camp Pendelon is near there, and San Diago has a Navy base. Maybe they're using a truck sized MRI. Or maybe its the Mexicans doing electronic evesdropping.
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#6
09-26-2002, 07:42 AM
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I doesn't have to be speed radar. The case in Texas was a doppler weather radar.
__________________
Michael LaFleur '05 E320 CDI - 86,000 miles '86 300SDL - 360,000 miles '85 300SD - 150,000 miles (sold) '89 190D - 120,000 miles (sold) '85 300SD - 317,000 miles (sold) '98 ML320 - 270,000 miles (sold) '75 300D - 170,000 miles (sold) '83 Harley Davidson FLTC (Broken again) :-( '61 Plymouth Valiant - 60k mikes 2004 Papillon (Oliver) 2005 Tzitzu (Griffon) 2009 Welsh Corgi (Buba)
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