Parking Brake Light stays on - Ford Truck Enthusiasts Forums



1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Parking Brake Light stays on

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 08-09-2012, 10:18 AM
mr.fordneck's Avatar
mr.fordneck mr.fordneck is offline
Senior User
Thread Starter
 
Join Date: Oct 2010
Posts: 439
mr.fordneck is starting off with a positive reputation.
Parking Brake Light stays on

So here's a recap of events. Yesterday, I painted my trucks frame, gas tanks, and rusty floor pans with POR15. I did paint the bracket next to the frame where the parking brake cable connects to. I also had the passenger rear tire off for a brake inspection but did not mess with the parking brake. I didn't see any electrical connection for the light anywhere near where I was painting. Now the light stays on whether I have the brake engaged or not. The brake is working fine. Ideas? Thanks. The light worked before yesterday
Reply With Quote
  #2  
Old 08-09-2012, 11:05 AM
dixie460's Avatar
dixie460 dixie460 is offline
Postmaster
 
Join Date: Nov 2011
Location: SW Florida
Posts: 3,369
dixie460 has a good reputation on FTE.dixie460 has a good reputation on FTE.dixie460 has a good reputation on FTE.
Brake warning can come from 2 places. There's a limit switch at the parkin brake pedal and a level switch at the master cylinder reservoir. Disconnect the plugs on both of these, and the light should be out. Now connect one of them, if the light is on you found the problem.

Light on with just the brake reservoir switch connected = low brake fluid or switch is stuck.

Light on with just the switch at the park brake connected = park brake not released fully or switch is stuck.
Reply With Quote
  #3  
Old 08-09-2012, 02:02 PM
GLOCKREAPER's Avatar
GLOCKREAPER GLOCKREAPER is offline
Senior User
 
Join Date: Feb 2012
Posts: 114
GLOCKREAPER is starting off with a positive reputation.
The switch is stuck. Spray some lube on it.

It happened to mine too.
Reply With Quote
  #4  
Old 08-09-2012, 05:44 PM
tjc transport's Avatar
tjc transport tjc transport is offline
i ain't rite
 
Join Date: Mar 2005
Location: ElephantIsland Antarctica
Posts: 44,099
tjc transport has a superb reputationtjc transport has a superb reputationtjc transport has a superb reputationtjc transport has a superb reputationtjc transport has a superb reputationtjc transport has a superb reputationtjc transport has a superb reputationtjc transport has a superb reputationtjc transport has a superb reputationtjc transport has a superb reputationtjc transport has a superb reputation
on my trucks, the springs on the pedal would weaken a bit. put a new spring on and it pulled the pedal up enough to turn the light out.
Reply With Quote
  #5  
Old 08-09-2012, 07:14 PM
niner niner is offline
Junior User
 
Join Date: Sep 2006
Location: Auburn Hills
Posts: 52
niner is starting off with a positive reputation.
Also, the switch that is on the parking brake works by grounding out the line. If that line got trapped anywhere and grounded out, that would result in a false reading.

I just pulled my switch and cleaned the surfaces last week - I had the opposite problem. My brake light wouldn't light when the parking brakes were set and unlike my smaller newer cars, the truck can overpower the rear brakes.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Park brake warning light Bluey Zedoff 1948 - 1956 F1, F100 & Larger F-Series Trucks 2 01-29-2016 05:14 AM
No park lights or plate light. htownoag 1987 - 1996 F150 & Larger F-Series Trucks 0 12-19-2015 04:58 PM
lights problem?????? JayzDaddy 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 26 06-03-2013 11:38 PM
strange brake symtoms OldWoodsDiesel 1994.5 - 1997 7.3L Power Stroke Diesel 10 01-07-2013 08:00 AM
Parking brake blessedby6 Bronco II 3 09-26-2002 01:23 AM


Go Back   Ford Truck Enthusiasts Forums >

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 10:01 PM.