Brake Light circuit won't work

Edward Barton
0

Asked by Edward Sep 24, 2012 at 09:19 PM about the 2000 Mercury Sable LS Wagon

Question type: Maintenance & Repair

My brake circuit is broken.  The brake lights don't turn on, and the shifter doesn't let me out of park.
The shifter issue can be bypassed with the key in the "off" position.
The brake switch has 9V going to it, as measured across the pins.
When pressing the brake pedal, the switch goes from open to short.
Where should I look next?

3 Answers

Chris McGee
3,595

Replace the switch, the switch gives signal to the lamps and to the shift lever to relaese the pin inside to be able to shift.

Edward Barton
0

Maybe you didn't fully read my question. The switch works (resistance goes from infinite to 0 when pedal is pressed), and is getting power. It's not the switch. I know it's something else that affects both the shift interlock and the lights, but I don't know what else is there.

retro
30

Recall Date: MAR 02, 2004 Model Affected: 2000 Mercury Sable Summary: CERTAIN PASSENGER VEHICLES ARE BEING RECALLED TO CORRECT A PROBLEM WITH A MALFUNCTIONING STOP LAMP SWITCH AND/OR ASSOCIATED WIRING. THIS MALFUNCTIONING COULD RENDER THE STOP LAMPS INOPERABLE OR CAUSE THEM TO STAY ON ALL THE TIME. THIS COULD CAUSE CONFUSION TO A FOLLOWING DRIVER, WHICH COULD LEAD TO A CRASH. Consequences: IN ADDITION, IF THE SWITCH AND/OR ASSOCIATED WIRING FAIL IN THE OPEN POSITION, THE BRAKE LIGHTS WILL NOT ACTUATE AND THE DRIVER WILL NOT BE ABLE TO SHIFT THE VEHICLE OUT OF "PARK" IF THEY FAIL IN THE CLOSED POSITION, THE BRAKE LIGHTS WILL REMAIN ON, WHICH WILL NOT ALLOW THE SPEED CONTROL TO BE ACTIVATED. THIS COULD ALSO CAUSE THE BATTERY TO DISCHARGE. Remedy: DEALERS WILL REMOVE THE STOP LAMP SWITCH AND ASSOCIATED WIRING ASSEMBLY AND INSTALL A NEWLY DESIGNED STOP LAMP SWITCH AND WIRE ASSEMBLY. OWNER NOTIFICATION IS EXPECTED TO BEGIN ON APRIL 5, 2004. OWNERS SHOULD CONTACT FORD AT 1-800-392-3673. Potential Units Affected: 938789 Notes: FORD MOTOR COMPANY

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions

Sable
Looking for a Used Sable in your area?
CarGurus has 1,599 nationwide Sable listings starting at $1,250.
ZIP:

Search Mercury Sable Questions

Mercury Sable Experts

#1 Tom Demyan
Tom Demyan
Reputation 140
#2 tennisshoes
tennisshoes
Reputation 130
#3 Mike Bonnell
Mike Bonnell
Reputation 120
View All

Related Models For Sale

Used Ford Taurus"
600 Great Deals out of 19,030 listings starting at $1,600
Used Mercury Grand Marquis"
104 Great Deals out of 3,305 listings starting at $1,500
Used Chevrolet Impala"
1,872 Great Deals out of 65,043 listings starting at $990
Used Toyota Camry"
1,344 Great Deals out of 73,151 listings starting at $1,490
Used Nissan Altima"
1,509 Great Deals out of 85,532 listings starting at $1,000
Used Toyota Avalon"
315 Great Deals out of 15,370 listings starting at $1,285
Used Ford Mustang"
916 Great Deals out of 27,356 listings starting at $1,500
Used Chevrolet Malibu"
1,415 Great Deals out of 79,180 listings starting at $950
Used Lincoln LS"
47 Great Deals out of 1,100 listings starting at $1,500
Used Chrysler Town & Country"
1,267 Great Deals out of 42,424 listings starting at $649

Used Cars For Sale

2005 Mercury Sable LS Wagon For Sale
4 listings starting at $3,598
2004 Mercury Sable LS Wagon For Sale
8 listings starting at $4,400