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

asked by on December 15, 2015

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

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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

P2112 code. Actuator works. Throttle plate moves freely.

Hello. Regardless if the actuator works when you get this code from this vehicle typically the throttle body needs to be replaced. In some cases, the problem may be the accelerator cable or the connection at the throttle body. I...

When putting foot on accelerator, brake, or shifter, car dies

A few different faults can cause the vehicle to go into a limp mode. The ECU puts the car into this mode to prevent damage and will be associated with a Check Engine Light. The most likely causes are a...

Crank no start

There are several possible reasons for a vehicle to crank and not start. A bad fuel pump, clogged fuel filter, faulty injectors, bad ecu, failed ignition coil, or a malfunctioning sensor. It will first be necessary to figure out if...

Related articles

A Buyer’s Guide to the 2012 Toyota Prius
Since Since they introduced the Prius, the very first mass-market hybrid, Toyota has been leading the auto industry in hybrid vehicles, and continues to do so in 2012. For this model year, the Prius saw some exciting new options, including...
A Buyer’s Guide to the 2012 BMW 335d
Of Of all of the BMW 3-Series models available in this model year, the 2012 BMW 335d is one of the most powerful and subtlest on the road. This 4-dour sedan may look mild-mannered enough, but under the hood it’s...
A Buyer’s Guide to the 2012 Audi A5
For For drivers who want a comfortable ride, expert handling and luxurious amenities, the 2012 Audi A5 will certainly fit the bill. Designed for performance and to deliver a gorgeous look, this model offers an array of options and features...