Q: Advance Trac dash light comes on and the brakes are applying.

asked by on

My f250 work truck has the advance trac light that comes on. When that happens the brakes engage and I have to pull over. The brake pedal is spongy all the time and when I bleed the brakes, the front do fine but the rear bleeders are bone dry with no fluid at all. I have a bosch computer that tells me all my wheel speed sensors are saying the same thing so I assume the speed sensors are working. I have to unplug the abs sensors on the rear axle and delete the codes and then plug them back up and delete the codes again and wait like 10 to 15 minutes before I can go again. I can fix a lot of things but this one has got me. Please help!

My car has 130000 miles.
My car has an automatic transmission.

Hi there. When the Advanced Trac light comes on and then the brakes are being applied, this means that the traction control system is active. The traction control is designed to apply the brakes to a wheel when the wheel is spinning out of control. Check all of the wheel speed sensors and make sure that they are working properly. Also, check the main controller to the Advance Trac for any loose wiring or damage. If everything is checked out to be functional, then I recommend replacing the Advanced Trac controller. For the bleeder screws not having any fluid coming out of them, either there is a leak in the brake system or the combination valve is stuck shut and there is air in the system. If you need further assistance with a spongy pedal and the traction control coming on, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Advance Trac dash light comes on and the brakes are applying.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 2011 740li say battery charge level low!

It sounds like you may have a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator charges the battery while the engine runs by generating amperage and recharging the battery while the engine turns...

Q: Hello Ben, my oil pressure is came on. Slight oil drip. Mechanic changed oil, replaced sending unit. Light came on after a day.

You need to have the oil pressure checked to see if the oil pressure is within specifications before you condemn the engine internal problem with oil pump or crankshaft and bearings. You may want to get the dealer involved now...

Q: My AC blower motor blows like it's on low no matter what I turn it to. Any ideas?

The blower control switch on the dashboard controls the circuit flow of the blower motor to adjust the voltage from low, to medium, to medium-high, to high. When on high, the circuit bypasses the blower resistor. The blower resistor will...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.