Skip the auto shop - Our mechanics make house calls

Q: ABS and brake lights flashing

asked by on

I was a little freaked out today when my ABS Light came on and the brake light started flashing while I was driving. What causes these lights to come on?

A: This indicates there is a problem in the an...

This indicates there is a problem in the anti-lock braking (ABS) system. In this system, the ABS control module monitors wheel speed via sensors. If, from the sensor signals, the module determines wheel lockup is about to take place, it will issue commands to the modulator. The modulator will regulate fluid pressure to pulse the brakes and prevent wheel lock up.

The illuminated brake and ABS lights could indicate anything from a failed wheel speed sensor to a faulty ABS control module. Unfortunately, vehicles like yours are well known for ABS control module failures, so that would be my bet.

I suggest you have a trained professional, such as one from YourMechanic, properly diagnose the ABS Light and recommend the best path to repair for your vehicle.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Speedometer is not functioning properly

One thing that can cause a problem with the speedometer is the output shaft speed sensor. The sensor and wiring should be inspected as this item can send an erroneous readings to the engine computer. If there are no issues...

Q: Had a Low Engine Pressure light and now the car won't start.

The low pressure light is your oil pressure for the engine and if you loose the oil pressure to all the internal bearings can cause major engine damage. You will need to have your engine checked to see if this...

Q: Replaced rt.& Left Rotors and brake pads. Also Rt. hub. the problem is ABS & brake light still come on. Does this have be reset ? 2004 Buick Ranier

Hello - the short answer is "Yes", the ABS problem code needs to be cleared with an appropriate Scan/Reset tool. This also begs the question "Was the ABS specific code read when the ABS light first came on, so that...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.