Question about 2001 Mercury Sable

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Red Brake light ON, Parking brake off and switch tests good, All wheel sensors test good, brake fluid switch, and fluid level good, all fuses are good. The light goes out when I unplug brake fluid level switch.

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It sounds like you have a faulty fluid level switch if you fluid level is ok . you can replace the switch very easy and cheap. if you go to you local salvage yard and cut the switch head of the same make of car and cut the switch of you car and join the wires up they sould be the same colour that should solve the problem very cheap

Posted on Aug 29, 2010

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I have a 2002 Grand Cherokee, and the brake warning light comes on at ignition, and stays on. What could be causing this?


omg what country, and which lamp there is not just one lamp.
"brake indicator used for vehicles manufactured
for the United States consists of the word
"BRAKE" imprinted on a red lens"
and
The Rest-Of-World
(ROW) market version of this indicator has two
International Control and Display Symbol icons
imprinted on the red lens; one is the icon for "Brake
Failure", and the other is the icon for "Parking
Brake".

why not read the manual first, or is guessing how it works fun?

posted it like 300 times now.
again, on one RED BRAKE warning lamp. (not ABS)
WJ jeep 99-04
see brakes chapter 3 covers it all.
the diffr pressure valve sets the red brake light on





26345254-derva1l3mlhtf5qz32ooabpo-5-0.jpg

26345254-derva1l3mlhtf5qz32ooabpo-5-1.jpg and more

"The parking brake switch is in circuit with the red
warning lamp in the dash.
The switch will cause the
lamp to illuminate only when the parking brakes are
applied. If the lamp remains on after parking brake
release, the switch or wires are faulty.
If the red lamp comes on a fault has occurred in
the front or rear brake hydraulic system.
If the red warning lamp and yellow warning lamp
come on, the electronic brake distribution may be at
fault.
In most cases, the actual cause of an improperly
functioning parking brake (too loose/too tight/won't
hold), can be traced to a parking brake component."
so unplug it to see that its not CAUSE.



parting shot, i make sure all red lamp devices are unplugged
1 by 1 to know which one is tripping, the lamp.
then after bleeded, I step on the brake pedal real hard.
100lbs or more
and this will centralize the DIFF VALVE NOW>
if not the brakes have air in the system.
or the DIFF VALVE is seized.
they can stick so, learn the MONSTER FOOT brake test./
use max brake pedal pressure now.

there is a parking lamp too. that glows and will warn of low fluid levels.
are you working on the car with no scan tool?
is yes, then you miss out on all those brake error DTCs
dont you... and work totally blind

26345254-derva1l3mlhtf5qz32ooabpo-5-3.jpg

Nov 07, 2016 | 2002 Jeep Grand Cherokee

1 Answer

I have a 2000 Mercedes E430 base sedan. Last week I replaced the brake light switch because it was out and it solved the problem to the point that I can now put my car into gear and drive it, however, as...


Brake light switch problem may cause the ESP / BAS lights to illuminate.

Common symptoms of a bad
Mercedes brake light switch.
  • Car stuck in Park.
  • ABS ESP ETS lights come on.
  • Can not move the shifter from Park to Drive.
  • Brakes Defective Warning on Instrument Cluster
  • Car won't shift gears. Stuck in 2nd gear, limp mode.
  • Brake lights don't work. (Brake light switch can still be defective even if the brake lights work. Checking the brake light operation is not a good test.)
  • ESP, BAS, ABS lights turn on. Car won't shift properly. Stuck in gear.


TEST: To test your new brake light switch: Turn you car off to reset the ABS light. apply the parking brake. and start the car in neutral or park without using the brake. if the problem is the brake light switch... the light will only come on when you press the brake pedal.

If you replaced the brake light switch and the light is still on you should check a few other things such as:

  • Fuses and Relays
  • ABS pump
  • ABS wheel speed sensor
  • Brake Fluid Level
  • Get an advanced scanner to read trouble codes.


NOTE: ** You may need a MBZ scan tool to reset the error code which was stored in the ECU because of the bad brake light switch.

Feb 25, 2015 | 2000 Mercedes-Benz E-Class

1 Answer

Light abs traction control stays 1998 buick park avenue


PRE-DIAGNOSTIC INSPECTIONBefore diagnosing ABS/TCS, perform a comprehensive visual inspection of system as follows.Check ABS/TCS wiring harness connectors for looseness. Check harness routing; pay particular attention to wheel speed sensor wiring harness routing. Check fuses No. 1D, 5B and 6B in instrument panel fuse block. Check fuses No. 1 and 2 in underhood fuse block. Check brake fluid level in master cylinder reservoir. Check brake fluid level in Pressure Modulator Valve (PMV) assembly reservoir. Ensure parking brake is fully released. Ensure parking brake switch is functioning properly. Always perform ABS/TCS system functional check before using DIAGNOSTIC CODE CHARTSThe EBCM/EBTCM has self-diagnostic capability, which can detect system failures. Fault codes stored by EBCM/EBTCM can be displayed using Tech 1 scan tester. There are no provisions for flash code diagnostics.Begin ABS/TCS diagnosis with PRE-DIAGNOSTIC INSPECTION procedure. If failures are found during pre-diagnostic inspection, perform necessary repairs, and proceed with ABS/TCS FUNCTIONAL CHECK. See Fig. 5 .If no failures are found during pre-diagnostic inspection, go to ABS/TCS FUNCTIONAL CHECK. See Fig. 5 . The ABS/TCS FUNCTIONAL CHECK will either indicate ABS/TCS is functioning properly or direct technician to various diagnostic procedures such as diagnostic charts, symptom diagnosis or BRAKE warning light diagnosis.CHART D - TRACTION OFF WARNING LIGHT ON CONTINUOUSLY & NO DTC SET (BUICK WITH UH8 OR U2A INSTRUMENT CLUSTER)Circuit DescriptionWhen ignition switch is first turned to RUN position, EBTCM goes through a self-test, which lasts 2-4 seconds. During self-test, EBTCM commands TRACTION OFF indicator warning light on. Powertrain Control Module (PCM) can also command EBTCM to set a Code 75 which will illuminate TRACTION OFF indicator.Traction control switch is located either on instrument panel center trim plate or driver's front door trim panel. Switch allows driver to select traction control mode (on/off). When traction control system is turned off, TRACTION OFF warning light comes on.EBTCM monitors transaxle temperature through

Jul 12, 2014 | 1998 Buick Park Avenue

1 Answer

I have a 2006 Chevy Trailblazer, the problem I am having is the brake sensor light will not go off and it keeps beeping. I was low on brake fluid and put some in however the light and beeping will not...


{: ) The brake fluid sensor is very important because it will tell you through the warning indicator if the fluid level is critical, specially while you are driving on road. You can try a few steps just to rule out some possibilities. Better if engine is off, but keep ignition on while proceeding with tests. Transmission in Park position,and the parking brake DISENGAGED fully.

Sometimes its not enough to put some, better complete fill to max level. Check again the sensor light..
If same problem, try to remove the brake fluid sensor connector. Check again.
If the connector has two wires, use a thin jumper wire to connect the two ends. Check again.

If Yes progress, then you need to replace the brake fluid sensor.
If still No progress, return the connector to its place. It's possible the parking brake switch is shorted, or the wires shorted to grouind. The system may need to be checked thoroughly.

Jun 05, 2011 | 2006 Chevrolet Trailblazer

2 Answers

Brake light stays on in dash 96 ford thunderbird


Hi, there are 3 things that can cause the light to stay on.
One is the parking brake switch, which may have shorted internally or to chassis ground. The switch is above the parking brake pedal. If the connector is still on the switch remove it. If the light goes out, replace the switch.

The second is the fluid level in the master cylinder reservoir. Check fluid level. If good, check the sensor by taking the cable off. If that puts the light out, replace the sensor.

The third is the pressure differential warning switch. The switch turns on when there is a brake failure. You would probably know if this happened. If not, check all wheels for brake fluid leaks. If you have a leak and need help with repair procedures, please get back to me. If you have completed repairs, please read the procedures below from autozone.com to reset the warning switch.

Please let me know if you have any questions and thanks for using FixYa.


From autozone.com:
A pressure differential warning valve is incorporated in the hydraulic system. The signal from this valve consists of a warning light on the dashboard activated by a differential pressure switch located below the master cylinder. The signal indicates a hydraulic pressure differential between the front and rear brakes of 80-150 psi, and should warn the driver that a hydraulic failure has occurred.
After repairing and bleeding any part of the hydraulic system the warning light may remain on due to the pressure differential valve remaining in the off-center position. To centralize the valve a pressure difference must be created in the opposite branch of the hydraulic system that was repaired or bled last.
Front wheel balancing of cars equipped with disc brakes may also cause a pressure differential in the front branch of the system.


VALVE CENTERING PROCEDURE

  1. Turn the ignition to either the ACC or ON position.
  2. Check the fluid level in the master cylinder reservoirs. Fill to within 1 / 4 in. (6mm) of the top if necessary.
  3. Depress the brake pedal firmly. The valve will centralize itself causing the brake warning light to go out.
  4. Turn the ignition off.
  5. Prior to driving the vehicle, check the operation of the brakes and obtain a firm pedal.

Dec 24, 2010 | Ford Thunderbird Cars & Trucks

1 Answer

Dash brake light on Parking brake is off


If the parking brakes are offf but you are getting an indication of the brake light then checck on
1. Low brake fluid levels, failure of master cylinder/wheel cylinder.
2. failrue of the park brake switch-- shorted or not released.
3. failure of the fluid level sensor.

Check these out before your travel.

Sep 18, 2010 | 2000 Ford Excursion

5 Answers

BRAKE LIGHT ON DASHBOARD ALWAYS ON, ALL BULBS FUNCTIONING PROPERLY..BRAKE LIGHTS, STOP LIGHTS, DIRECTIONAL LIGHTS ETC


Check your brake fluid level in the reservoir; some Toyotas have wheel cylinder sensors; some Toyotas have master cylinder sensors; you also have a sensor on the parking brake and on the brake pedal inside the cab. Check all that.

Feb 14, 2010 | 1993 Toyota Pickup

1 Answer

Console brake light stays on I checked fluid level and it is good. I Pulled parking brake and it is working fine but light does not turn off.


I dont know which brake light is the console light but fluid level needs to be FULL. You might even disconnect the fluid level sensor just to be sure its not lying. Does the brake pedal feel normal? if not, have it looked at. May be the parking brake switch is bad?

Nov 16, 2009 | 2001 Kia Rio

2 Answers

Brake light came on, on my dash.ihave brake fluid


could be a faulty brake fluid level switch ,or parking brake switch, both of the switches supply grond for the light so unplug one at a time to see if light goes out. the brake fliud one is plugged into the master cylinder reservoir the parking brake switch is on top of the p.b. pedal assembly one more option is the brake safety switch, the block under the master with one wire sticking out of it same test pull the wire to see if light goes out

Jun 30, 2009 | 1996 Mercury Grand Marquis

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