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Old 09-01-2019, 06:50 PM   #1
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Brake light confusion

I recently bought an Ď04 SVT. It came with the Brake, ABS, and Traction Control lights on. Parking brake also didnít work. And was having the calipers sticking on me occasionally. I replaced the rear calipers first. Which fixed the parking brake issue. Still had the front sticking on me. So I just replaced the fronts as well. Which I was hoping would at least kill the brake light. Upon start up the light was out. As soon as I hit my brakes it was back on. I found it weird when the calipers were sticking the light would be off. I would take off in the car and knew when the brake were going to bind up because the light would be off. As soon as I would hear the brakes break free the light would be back on. The ABS and TC light I assumed are caused by a possible bad sensor. Was told a rear hub was recently replaced so I figured the sensor was damaged. But the brake light has me confused. Any help would much appreciated!


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Old 09-02-2019, 08:50 AM   #2
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This might sound dumb but did you make sure your brake fluid is full? And no air in the system?
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Old 09-02-2019, 01:41 PM   #3
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Nope,not dumb at all sometimes the simplest things get overlooked. Yes I have completely bleed and topped off the system. I changed the front calipers yesterday and got to drive round a bit today. Now Iím baffled for sure. Started it up this morning no brake light. Go and take off. the car starts sputtering and and gets harder to go forward. The same thing that was happening before. It like the brakes are progressively being applied. But now all new calipers and fluid. So now Iím wondering if itís more of a Traction control issue. I think my next step is going to get a scan to tell me why the ABS and traction control light are on. This all has to be tied in together.


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Old 09-06-2019, 06:15 PM   #4
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I've got an 05 ZXW with the same issue, all 3 lights on. I just replaced my parking brake cable, because the rears were sticking. I was hoping this would solve the brake light.

When I turn on the car, the ABS and TC lights are both on, then as I start moving (at 10mph), the brake light comes on. I am 100% sure now that the e-brake is not applied in the least, so it's a bit confusing that the brake light comes on.

When there is a tone ring/wheel speed sensor issue, does it turn on the brake light at the same time?

As for the OP, have you checked that the e-brake/parking brake cable isn't sticking in any way? It almost sounds like what I had happening. The brakes were staying applied even once I put the parking brake lever down. The cable was so rusted that there was too much resistance for the spring on the brake to pull the cable back through, so it just stayed on.
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Old 09-08-2019, 08:58 AM   #5
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The parking brake was the first issue I addressed with my brakes. In my case it was the parking brake levers on the rear calipers that were seized up. But it does sound weíre having the same light issues. My brake light behaves the same way. But if I start moving and my brake light is of my car will get up to about 2500rpm and it start cutting out , and feels like the brakes are being applied. If I reverse the car and jam the brakes the go forward usually I start going forward the brake light will come on and then the car is fine. Iím leaning towards an issue with the abs system. Need to get a scanner that read abs. Well Charlesthemonkey. Let me know if you make any forward progress with your issue. Iíll do the same.


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Old 09-08-2019, 10:59 AM   #6
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The brake light only turns on due to two things, parking brake or low fluid sensor.

So check the limit switch by the ebrake handle or possibly replace the cap sensor on the fluid cap.

Traction Control & ABS light would turn on if their was a sensor issue. Apparently Forscan can dig into the ABS module and know what wheel is reporting wrong values, there is no PIDS in the ECU for this so a SCT scanner or other scanner can read the TC or ABS codes.
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Old 09-08-2019, 10:59 AM   #7
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Double post.
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Last edited by Magus2727; 09-09-2019 at 05:18 PM.
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Old 09-09-2019, 04:22 PM   #8
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Hmm, My limit switch is fine, it turns the light off on the dash no problem when I lower the parking brake.

I haven't tried anything with the level sensor, need to do that.

I thought I had solved the brake drag issue with the new parking brake cable, but I guess not. Today as I was pulling out of my work parking lot I noticed a bit of drag, and had the same weird engine stutter when I tried to accelerate. I stepped hard on the brake a few times, pulled the e brake cable a few times, then continued on my way, without any noticeable drag. Really a strange issue.

When I got home, I decided to check the hubs, and I can't really tell if there's play in the bearings. Not sure if that'd cause this kind of drag anyway. The right front had a slight clunking noise when I tried wobbling the tire with my hands, but I couldn't tell if it was the bearing or not.
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Old 09-09-2019, 05:18 PM   #9
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@HatchAddict, btw after reading your post I absolutely have the same problem as you. I even was doing the same thing with reverse and slamming on the brakes to loosen up the rears.

Hopefully the two of us can solve this. Just bought an OBD2 bluetooth device, as the one I've got doesn't like to communicate with my Focus. It works on the Miata, weirdly enough.
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Old 09-11-2019, 08:08 PM   #10
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Quote:
Originally Posted by charlesthemonkey View Post
I thought I had solved the brake drag issue with the new parking brake cable, but I guess not. Today as I was pulling out of my work parking lot I noticed a bit of drag, and had the same weird engine stutter when I tried to accelerate. I stepped hard on the brake a few times, pulled the e brake cable a few times, then continued on my way, without any noticeable drag. Really a strange issue.
Rear drums or discs?

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