The Brake assist and traction control light is on, and brake is to the floor and does not work well. What could be the problem?


Asked by gbennettjr Oct 19, 2013 at 02:18 PM about the 2006 Buick Lucerne CXL V8

Question type: Maintenance & Repair

4 Answers


Sounds like you have a brake fluid leak. Remove the top of the master cylinder and check the fluid level. Both chambers should be 1/4" from the top of the resivoure. If one chamber is low or empty there's the problem. Get it fixed ASAP!! Faulty brakes are nothing to fool with!! HTH. -Jim

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Best Answer

I have the same issue, but the lights come and go. I have good brakes, transmission seems to be functioning well, etc... Only issues being that the brake assis and traction control lights are coming on...

18 out of 18 people think this is helpful.

All fluids are good. Interestingly, before this began to occur, there is a whirring should, that resembles when we used to have non-resister plugs and you had the radio turned on...

2 out of 2 people think this is helpful.

The clamp was made in china so it rusted out the break line and caused a leak. It has a 50k mile warranty so I got it done fast and only had to pay for the tax which was 20.00. Normally would be a 500 or so fix.

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