Have a 2005 Dodge Grand Caravan. Occasionally, and usually when it is cold, my dashboard brake indicator light will come on and then go out after a few seconds. It will happen when I am driving and not necessarily when I am stepping on the brakes. The fluid is full. What does this mean?
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The cable tightness is loose therefore causing the light to come on while driving, tighten or replace the eb cable hope that helps or you need to push in the button on it hold the button and pull it back as far as you can. let go then push button pull back farther and release, this should tighten the tension.
if its a low brake fluid situation that is turning on the light then make sure the fluid level is correct. if its full then the proportioning valve may have to be centred if it move too far in one direction. to do this you bleed the brakes to move the valve to the centre position. if this won`t work then tap the valve while bleeding it should unstick the valve. check the e-brake as it could have moved just enough to turn on the brake light indicating the e-brake is on, as there is a switch for this on the e-brake pedal, make sure its in the full off position(pedal is up all the way).
I have the same year car, first check the brake fluid level, (under the hood driverside in the back behind the coolant resivoir). If it is full check the E-brake because since it is a foot brake you can strech the wire and when you stop and go, the wire moves now and light is triggerd...
The first thing to check is the brake fluid level. If it is low than top it off with brake fluid only!!!! The light should go out. The next thing to do if this is the case is check the brakes. Low brake fluid is a good indicator of either the brakes getting worn out or a leak in the brake system.
If the fluid is full make sure the emergency brake is not on. This will also cause the brake light to come on.
Check the brake fluid. It may be just low enough to occasionally turn the light on as you hit bumps and it sloshes a little. Add a little brake fluid to the reservoir and check the brake pads all around.
Sound's like their is a problem with the right hand rear light cluster.The reason it only happen's going down a hill is you applying the brake. The only place the brake and indicator light's come together is the rear clusted. To check this apply the hand brake gently with the button held in instead of useing the foot brake. This may not be the fault but it is worth a try as it seems the most likely problem.
I would check the brake fluid level in the master cylinder, if the level is too low it will lower the float in the master cylinder and turn on the brake light on the dashboard, especially if it is an occassional occurance. Hope this helps