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New 240D - Brake Lights On All The Time?
OK, am usually the one with the answers, but this has me stumped so far.
Had the mast cyl off, was to rebuild, but just ended up cleaning, replacing the rear seal and reassembling. Also did both side brake pads and sensors on one side. Now, when ignition is on, the brake lights are on. Continuously. Brake pedal is fine (bled brakes, no air that is noticeable, stiff pedal, brakes work fine, etc.) no wiring that I messed with to speak of. Anyone else had this? Maybe just coincidental that the brake light switch went bad at the same time? Lucas components snuck in un-noticed?
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1984 300D Turbo - 4-speed manual conversion, mid-level resto 1983 300D - parts car 1979 300TD Auto - Parts car. 1985 300D Auto - Wrecked/Parts. ========================= "If you don't know where you are going, any road will get you there". Lewis Carrol |
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My brake light switch loosed up on me and the lights stayed on. …Just a thought
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#3
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BTW, for others, I'm talking about the actual rear brake lights, NOT the "Brake" indicator light in the instrument panel.
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1984 300D Turbo - 4-speed manual conversion, mid-level resto 1983 300D - parts car 1979 300TD Auto - Parts car. 1985 300D Auto - Wrecked/Parts. ========================= "If you don't know where you are going, any road will get you there". Lewis Carrol |
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TomJ,
Seems like it would have to be the switch or the mounting of the switch or a pinched wire. Look in the vicinty of the brake pedal under the dash. When somethin like this happens, it is almost always caused by the previous repair you did. P E H |
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The only thing that could have happened other than accidentally crunching the switch while messing about doing something else is to have changed the length of the pushrod while working on the master cylinder.
Probably just need to adjust the brake light switch. The chief engineer from Lucas once told my father Lucas would never use alternators because they were too unreliable and not "self actuating" -- Pop designed the control system for a set of alternator stator winders for Chrysler and the guy from Lucas stopped in to take a look. This was early 70's, just before Lucas finallly started making alternators. I guess they were the folks that though English cars shouldn't have fuses, too. Peter Peter
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1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs! |
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When I dropped the kick panel and D/C'd the cruise, the brake lights went out. They worked with the pedal, but when the cruise computer was re-conn'td, the lights came on again. Took the unit apart and found a few traces that were jumped with solder. Fixed those, re-soldered the rest of the joints, re-assy'd to car and voila', all better. Cruise now works and so do the lights...., when they're SUPPOSED to!
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1984 300D Turbo - 4-speed manual conversion, mid-level resto 1983 300D - parts car 1979 300TD Auto - Parts car. 1985 300D Auto - Wrecked/Parts. ========================= "If you don't know where you are going, any road will get you there". Lewis Carrol |
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TomJ,
Great detective work. I wonder how you doing the brake work caused the short to happen. Did you R&R the cruise control box when you did the R&R the brake master cylinder? P E H |
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Quote:
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1984 300D Turbo - 4-speed manual conversion, mid-level resto 1983 300D - parts car 1979 300TD Auto - Parts car. 1985 300D Auto - Wrecked/Parts. ========================= "If you don't know where you are going, any road will get you there". Lewis Carrol |
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