Skip the auto shop - Our mechanics make house calls

Q: What is the four-wheel anti-lock brake system?

asked by on

What is the four-wheel anti-lock brake system?

A: You have two braking systems on your car – ...

You have two braking systems on your car – the standard system that kicks in when you press the brake pedal under normal conditions and a four-wheel anti-lock brake system (ABS). The ABS works only under certain conditions. It’s tied to your normal brakes, but not part of the system.

Under certain types of hard braking, the ABS system will kick in. The only thing this system does is to ensure that you don’t lock up a wheel during hard stopping as that can send the car into an uncontrolled spin. The ABS measures wheel speed and will pulse the brakes on a wheel that’s turning faster than the others to ensure safety.

Tips

  • ABS does not shorten stopping distance.
  • ABS does not make driving on wet or slippery surfaces safer.
  • You may hear noise from the ABS pump during operation. This is normal.
  • You may feel the brake pedal pulsate when the ABS activates. This is normal.
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: 2006 Audi brake pedal hard replaced booster with no results

To begin with the booster needs a vacuum source. You said you replaced the line, but there is a check valve in the line, it is probably installed at the booster end of the line. It looks like just an...

Q: Front end vibration and loss of wheel weight on a '96 Ford Explorer

It would if it happens at higher speeds. It wouldn't affect it if you are going 10, 20, 30 mph, but if you are going 50-60 mph and it begins to happen, then yes. Go get it balanced and have...

Q: What should I do to inspect my tires?

Proper tire maintenance is an essential consideration for all drivers. If you don’t take care of your tires, they can blow out and leave you stranded. One of the most basic maintenance steps is conducting a periodic inspection of your...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.