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Parking brake light intermittent
 Moderated by: MaDMaXX, Mike69, NoPower
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 Posted: Thu Dec 7th, 2017 05:19 am
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MaDMaXX

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My parking brake light has started to sporadically not work, though at this point, it seems to be off more than it's on (whilst the parking brake is engaged)


Is this something they do? fail? or is it a contact that needs cleaning inside the cab perhaps?



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 Posted: Thu Dec 7th, 2017 01:48 pm
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mhoward
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I would be looking at the e-brake light switch under the dash. Not sure how it adjusts, but it should be quite obvious. Could be adjustment, failing switch, plug connector loose...



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 Posted: Thu Dec 7th, 2017 02:45 pm
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The parking brake pedal is designed to be self-adjusting for brake wear and cable stretch; the switch itself is strictly pedal position activated and is not independently adjustable. There is a wire w/spade terminal attached to the p-brake assembly that sometimes gets corroded, loose or dirty. Contact surfaces within the assembly supply ground to that wire when the p-brake is applied and these could also be corroded/dirty.

Side note: if the assembly needs to be removed, there are indexing holes that line up at a certain pedal position. A punch, rod or drill bit can be inserted there to take tension off of the cable and ease disassembly/reassembly.
Try Google Images or YouTube for visuals. 



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2003 FX4 Level II, Supercharged 5.0L V8, Headers, Duals, BW4406 manual T/C
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 Posted: Thu Dec 7th, 2017 03:32 pm
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MaDMaXX

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Good info, thanks all. I'll get under there and have a look, the switch sounds like a good candidate based on how i've see it start to fail.



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 Posted: Fri Dec 8th, 2017 04:31 am
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Just to clarify... there is no separate switch. The switch function is incorporated in the parking brake pedal assembly. Non adjustable, not replaceable separately.



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2003 FX4 Level II, Supercharged 5.0L V8, Headers, Duals, BW4406 manual T/C
Aussie Locker, Torsen L/S, 4.10's, Bilstein 7100 rezzies, Cadillac/Mustang rear discs, Duff traction bars
Keypad Entry, Lock LEDs, sway bar discos, Heated seats, Explorer EATC, Trip Computer and consoles

Other rides:
2016 C-MAX Energi (plug-in Hybrid)
2011 Taurus SEL (highway cruiser)
2003 Ranger 2.3L M5ODR1 Regular Cab (drudge)

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 Posted: Fri Dec 8th, 2017 06:13 am
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MaDMaXX

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Yeah, i'm hoping an alignment or cleaning will be possible.



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