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check cruise control fuse and check the brake lights see if brake light working because the brake light switch will deactivate cruise control when brakes is applied.if brake lights dont work either fuse blowed or switch bad.if all is good have vechicle code scan because cruise control control by PCM and vechicle speed sensor and thottle actuator control motor.
Look at your brake master cylinder, open the top to it, and check your brake fluid. If low, that is why the brake light is on. Or check to see if your emergency brake is pushed in. Check your fuses for the cruise control. Hope this helps, James Booth
Check the bulbs first of all (and fuses), if this is not the problem it is probably the brake light switch. If your car has cruise control, see if pressing the brakes make the cruise control go off. If not, you definitely have a bad brake light switch. If they do go off, though, it doesn't mean the brake light switch is not bad. You really need to take the swich off and test it with a multimeter set to ohms or continuity. If the switch tests bad, you know it has to be replaced, so if you are ambitious and mechanically inclined, you could take it apart and see if you can fix it. I was actually able to take a brake light switch apart, repair it, and put it back in the car on one occasion. It only worked for a few weeks, but it got me by.
TPM THAT MEANS TEMPOMAT CRUISE CONTROL.CHECK TO SEE IF BRAKE LIGHTS WORK.IF NO CHECK BRAKE LIGHT SWITCH FUSE. IF FUSE OKAY BRAKE LIGHT SWITCH FAULTY OR YOU HAVE OPEN WIRE FROM BRAKE SWITCH TO FUSE BOX.SEE YOUR BRAKE SWITCH DEACTIVATES THE CRUISE CONTROL SYSTEM.PROBLEMS WITH BRAKE PEDAL POSITION SWITCH WILL SET OFF CRUISE CONTROL WARNING LIGHT.IF BRAKE SWITCH OKAY.THE DEALERSHIP HAS TO DIAGNOSIS AND FIX PROBLEM.
Your brakes warning light or your actual brake lights? If it is your warning light that can come Monday if you're park break is on or slightly on or the switch that says that it is on is faulty, in which case it may tell your cruise control to turn off. If your brake lights stay on there's something pul to you about your switch by the pedal as your cruise will not work when you hit the bricks and this will be perceived as you hitting the brakes. A break warning light will also, come on if your brake fluid is low.
having the same problem with my 1999 s80 2.9 . replaced the abs module twice and still get the brake failure warning. when the ignition key is turned there is a clicking sound from the center console beneath the shifter, then the brake failure warning, and the car will not start. (also after the last abs module replacement the car sometimes gets stuck in park).
Here's a list of your dash lights and their meanings
1. Door-ajar warning light
2. Oil pressure warning light
3. Check engine warning light
4. Tour or Sport for the ECS
5. Security indicator
Center Warning Lights
1st space down Left: 4-wheel steering oil level warning light Right: Brake warning light
2nd space down: Left: Anti-lock brake warning light Right: Active Exhaust Tour indicator
3rd space down Left: cruise control indicator Right: cruise control ON indicator
4th space down: Left: charging system warning light Right: High-beam indicator
Right Warning Lights
1st down: Not used
2nd down: Seatbelt warning light
3rd down: Washer fluid (2 storage containers)
4th down: Supplemental restraint system (SRS) warning light