Braking causes dashlights to illuminate in W140 - Mercedes-Benz Forum

 
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post #1 of 4 (permalink) Old 04-30-2006, 12:40 PM Thread Starter
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Braking causes dashlights to illuminate in W140

In my 1997 S320, depressing the brake pedal causes the dashlights and the light-bulb-out light to illuminate. I have 140,000 miles on the vehicle. This strange situation just began today. Any thoughts on the cause? Possibly a worn switch at the brake pedal?

PH1958
(Previous) 1997 Smoke Silver S320
(Previous) 2006 Brilliant Silver S430 4-Matic
2002 Champagne Lexus RX300
2007 Brilliant Silver GL450 4-Matic
2005 Brilliant Silver SL500
2010 Sea Mica Lexus LS460L AWD
2012 Crimson Red BMW Z4 iDrive28
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post #2 of 4 (permalink) Old 04-30-2006, 08:01 PM
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Sounds like a possible corrosion in a lamp socket (rear brake light) causing a jumping of the circuit from the brake light portion into the parking light circuit back up into the dash lights. Your parking lights are probably coming on dimly at the same time. Take a look.
Glenn B
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post #3 of 4 (permalink) Old 05-01-2006, 02:32 AM Thread Starter
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Thanks for the suggestion. I will investigate that possibility.

PH1958
(Previous) 1997 Smoke Silver S320
(Previous) 2006 Brilliant Silver S430 4-Matic
2002 Champagne Lexus RX300
2007 Brilliant Silver GL450 4-Matic
2005 Brilliant Silver SL500
2010 Sea Mica Lexus LS460L AWD
2012 Crimson Red BMW Z4 iDrive28
ph1958 is offline  
post #4 of 4 (permalink) Old 05-01-2006, 03:56 PM Thread Starter
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It turns out that I grabbed the wrong bulbs (from my kit). Once I installed the correct bulb, the problem was solved.

Thanks!

PH1958
(Previous) 1997 Smoke Silver S320
(Previous) 2006 Brilliant Silver S430 4-Matic
2002 Champagne Lexus RX300
2007 Brilliant Silver GL450 4-Matic
2005 Brilliant Silver SL500
2010 Sea Mica Lexus LS460L AWD
2012 Crimson Red BMW Z4 iDrive28
ph1958 is offline  
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