Brake light on dash while boosting

macaddict111 · 05-16-2012, 12:32 PM

Are you sure you're not losing vacuum? If the brake vacuum reservoir is getting all the vacuum bled out of it I could see that turning the light on... Have you tried barely pushing the brake pedal when the light comes on like that? If you had a stiff pedal that would be a good indicator...

MaDMaXX · 05-16-2012, 03:45 PM

It's brake fluid level.....

That light is, by design, supposed to come on when it thinks your brake fluid level is too low.

370Z Purist · 05-24-2012, 05:52 PM

increased pressure in the system plus expanding brake lines would "compress" enough fluid or fill up the increased volume in the lines to make the sensor think the fluid level is low when it's just preoccupied in some other condition...

SS brake lines + more fluid/better fluid = solution!

05-16-2012, 03:45 PM	#17 (permalink)
MaDMaXX Enthusiast Member Join Date: Jan 2012 Location: Oregon from England Posts: 292 Drives: 350z Rep Power: 13	It's brake fluid level..... That light is, by design, supposed to come on when it thinks your brake fluid level is too low. __________________ '04.5 350Z - Very Motordyne.

05-24-2012, 05:52 PM	#18 (permalink)
370Z Purist A True Z Fanatic Join Date: Jun 2009 Location: Zion, Illinois Posts: 1,873 Drives: '09 370Z-T BS M6 Rep Power: 18	increased pressure in the system plus expanding brake lines would "compress" enough fluid or fill up the increased volume in the lines to make the sensor think the fluid level is low when it's just preoccupied in some other condition... SS brake lines + more fluid/better fluid = solution! __________________ -Phil "Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

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05-16-2012, 12:32 PM	#16 (permalink)
macaddict111 Base Member Join Date: Apr 2012 Location: Tacoma, WA Posts: 33 Drives: '09 370z White Auto Rep Power: 13	Are you sure you're not losing vacuum? If the brake vacuum reservoir is getting all the vacuum bled out of it I could see that turning the light on... Have you tried barely pushing the brake pedal when the light comes on like that? If you had a stiff pedal that would be a good indicator...