Low brake fluid light stays on after replacing a brake line

2003 BUICK RENDEZVOUS
230,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
AARON PRESLEY
  • MEMBER
  • 1 POST
Replaced the brake line going to the rear of car cannot get low brake fluid light and dinging to go off dash.
Jan 16, 2022 at 11:58 AM
Advertisement
Avatar
SQM
  • ✓ASE Certified Mechanic
  • 6,383 POSTS
  • ASE Certified Mechanic
Hello,

On the side of the master cylinder there is a brake fluid level sensor. When the fluid is low that sensor sends a low fluid message.
If the fluid is at the correct level and you are getting that warning light, it could be due to a faulty sensor.
You also want to make sure that the connector is secured to the sensor and does not have any corrosion.

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.
Images (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Jan 16, 2022 at 12:04 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.