# ABS + Brake light on + Spedo not working

**URL:** https://forums.speedlife.net/t/abs-brake-light-on-spedo-not-working/32034
**Category:** NYSpeed Automotive
**Created:** [July 8, 2007, 7:57am UTC](https://forums.speedlife.net/t/abs-brake-light-on-spedo-not-working/32034 "2007-07-08T07:57:32Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![JayS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jays/32/15375_2.png) [@JayS](https://forums.speedlife.net/u/JayS)
#### Post date: [July 8, 2007, 12:51pm UTC](https://forums.speedlife.net/t/abs-brake-light-on-spedo-not-working/32034/5 "2007-07-08T12:51:22Z")

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Rear axle speed sensor.

ABS needs to know exactly how fast you’re going to work. It can’t figure that out because your speed sensor is broken/disconnected. That’s why the ABS light is on and the speedometer isn’t working.

I didn’t think that would cause the brake light to come on though. That’s normally low fluid.

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