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Brake light & TCS light

Was accelerating onto the highway in 3rd gear, high RPMs, brake warning indicator light came on (the one that says "brake"). It went off when I upshifted, and then the

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Old 10-15-2020, 07:25 PM   #1 (permalink)
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Default Brake light & TCS light

Was accelerating onto the highway in 3rd gear, high RPMs, brake warning indicator light came on (the one that says "brake"). It went off when I upshifted, and then the traction control light came on and stayed on.

The e-brake was definitely not engaged. Only recent mod to the Z was new HFCs. This is the second time since the new HFCs went on that the brake warning light lit up at high RPM in 3rd gear, first time the TCS light went on though.

Thoughts, ladieZ?

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Old 10-15-2020, 07:35 PM   #2 (permalink)
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I've had the same issue over the last month or so and just did get it taken care of (mostly because I didn't care).

Check brake fluid and fill above the fill line if it still "good". I recently had my calipers painted and it started right after. Doing this solved my problem.

Also check your brake pads. This wasn't my issue personally, but I've heard brake pads being bad can cause the issue as well.

That's all the advice I've got. Hopefully it helps.
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Old 10-15-2020, 07:55 PM   #3 (permalink)
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Originally Posted by zpwrgirl View Post
I've had the same issue over the last month or so and just did get it taken care of (mostly because I didn't care).

Check brake fluid and fill above the fill line if it still "good". I recently had my calipers painted and it started right after. Doing this solved my problem.

Also check your brake pads. This wasn't my issue personally, but I've heard brake pads being bad can cause the issue as well.

That's all the advice I've got. Hopefully it helps.
Thanks! Brake fluid was changed 2 months ago. I'll check the pads.
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Old 10-15-2020, 08:35 PM   #4 (permalink)
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Check the brake fluid.
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Old 10-15-2020, 09:00 PM   #5 (permalink)
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You've been using those brakes

Make sure the brake fluid reservoir is filled to the MAX line. That will fix the light. Hard acceleration can slosh the fluid and mess with the sensor when the fluid level drops. Check the lines and the pad level to verify the reason for the fluid level dropping.
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Old 10-16-2020, 06:38 PM   #6 (permalink)
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Brake fluid was about at the halfway point. Refilled to the max line. Took the Z out and went into high RPMs, no brake warning light or TCS light. Weird how the code throws but the CEL stays unlit.

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Old 10-16-2020, 06:46 PM   #7 (permalink)
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Quote:
Originally Posted by BettyZ View Post
Brake fluid was about at the halfway point. Refilled to the max line. Took the Z out and went into high RPMs, no brake warning light or TCS light. Weird how the code throws but the CEL stays unlit.

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Check your pads for wear. You have a set getting low. The next you replace the pads. Be careful. Because the fluid you put in. Has to come back out. When you push the pistons back in. It will push fluid out.
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Old 10-17-2020, 02:39 PM   #8 (permalink)
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Check your pads for wear. You have a set getting low. The next you replace the pads. Be careful. Because the fluid you put in. Has to come back out. When you push the pistons back in. It will push fluid out.
Well I am an expert at pushing fluid out
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Old 10-17-2020, 03:30 PM   #9 (permalink)
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Well I am an expert at pushing fluid out in all the wrong holes.
fify
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Old 10-17-2020, 04:53 PM   #10 (permalink)
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Check your pads for wear. You have a set getting low. The next you replace the pads. Be careful. Because the fluid you put in. Has to come back out. When you push the pistons back in. It will push fluid out.
it's not really low on fluid you just have too much in the calipers. The fronts hold a lot when the pads are worn. It will fill itself back up (or overflow) when the pistons are pushed back in.
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Old 10-23-2020, 07:29 PM   #11 (permalink)
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Swapped the posiquiets for stoptech streets today. The posis were not very worn. At all. Still had lots of beef left on the pad.

Makes me wonder if there's a leak in the lines somewhere. I re-torqued all the caliper bleed screws, none were loose. Havent seen any evidence of hydraulic fluid leak on the garage floor.

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Old 10-24-2020, 11:30 AM   #12 (permalink)
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Swapped the posiquiets for stoptech streets today. The posis were not very worn. At all. Still had lots of beef left on the pad.

Makes me wonder if there's a leak in the lines somewhere. I re-torqued all the caliper bleed screws, none were loose. Havent seen any evidence of hydraulic fluid leak on the garage floor.

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Did you have the old pad marcel removed from the rotors? If not the new pads may not perform well.

I notice the StopTech Streets LOVE high carbon blank rotors. TONS of initial bite, which I prefer on the street.
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Old 10-25-2020, 07:40 PM   #13 (permalink)
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I had this issue earlier in the year. Topped off the brake fluid reservoir and haven’t had an issue since.
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