Brake light & TCS light

BettyZ · 10-15-2020, 08:25 PM

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?

Sent from my SM-G955U using Tapatalk

zpwrgirl · 10-15-2020, 08:35 PM

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.

BettyZ · 10-15-2020, 08:55 PM

Quote:

Originally Posted by zpwrgirl

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.

Rusty · 10-15-2020, 09:35 PM

Check the brake fluid.

JARblue · 10-15-2020, 10:00 PM

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.

BettyZ · 10-16-2020, 07:38 PM

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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Rusty · 10-16-2020, 07:46 PM

Quote:

Originally Posted by BettyZ

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.

Sent from my SM-G955U using Tapatalk

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.

BettyZ · 10-17-2020, 03:39 PM

Quote:

Originally Posted by Rusty

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

Rusty · 10-17-2020, 04:30 PM

Quote:

Originally Posted by BettyZ

Well I am an expert at pushing fluid out in all the wrong holes.

fify

-ZS-Carpenter · 10-17-2020, 05:53 PM

Quote:

Originally Posted by Rusty

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.

BettyZ · 10-23-2020, 08:29 PM

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.

Sent from my SM-G955U using Tapatalk

Tractionless · 10-24-2020, 12:30 PM

Quote:

Originally Posted by BettyZ

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.

Sent from my SM-G955U using Tapatalk

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.

TacoSport10 · 10-25-2020, 08:40 PM

I had this issue earlier in the year. Topped off the brake fluid reservoir and haven’t had an issue since.

10-15-2020, 08:25 PM	#1 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: Chicagoland Age: 37 Posts: 5,261 Drives: A Garage Queen Rep Power: 2684371	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? Sent from my SM-G955U using Tapatalk __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

10-15-2020, 08:35 PM	#2 (permalink)
zpwrgirl Base Member Join Date: Feb 2020 Location: Ohio Posts: 28 Drives: 19 370z Black Manual Rep Power: 5	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. JARblue and BettyZ like this.

10-15-2020, 09:35 PM	#4 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,183 Drives: 2011 Nismo GM 6M Rep Power: 2684437	Check the brake fluid. BettyZ and zpwrgirl like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

10-15-2020, 10:00 PM	#5 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	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. Rusty, sx moneypit, ZontheRocks and 3 others like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \| Last edited by JARblue; 10-15-2020 at 10:03 PM.

10-16-2020, 07:38 PM	#6 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: Chicagoland Age: 37 Posts: 5,261 Drives: A Garage Queen Rep Power: 2684371	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. Sent from my SM-G955U using Tapatalk JARblue and ZontheRocks like this. __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

10-23-2020, 08:29 PM	#11 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: Chicagoland Age: 37 Posts: 5,261 Drives: A Garage Queen Rep Power: 2684371	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. Sent from my SM-G955U using Tapatalk __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

10-25-2020, 08:40 PM	#13 (permalink)
TacoSport10 Base Member Join Date: Mar 2019 Location: Virginia Posts: 184 Drives: 13 370Z Touring Sprt Rep Power: 197	I had this issue earlier in the year. Topped off the brake fluid reservoir and haven’t had an issue since. BettyZ likes this.

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