Is Brake Line Failure a Maintenance Issue?

Among the most dangerous mechanical problems facing a vehicle owner is sudden brake failure due to ruptured brake lines. Brake hoses rely on hydraulic pressure to operate. The driver risks an accident -- and potentially serious injuries -- when his brakes fail.

Background

Brake lines are composed of steel, and are located on the underside of the vehicle. Pressing down on the brake pedal delivers brake fluid through the lines. Hydraulic pressure is applied to the brakes at each wheel.

Corrosion

Brake lines are exposed to road salt and other corrosive materials. This exposure causes leaks and a loss of pressure, typically leading to an inability to brake. Brake lines are difficult to inspect on a regular basis, due to their location. Replacing brake lines as part of a preventative maintenance program -- common with other car parts -- is not cost efficient or practical. New brake lines can cost $1,000, as of 2011.

Considerations

In April 2010, the National Highway Traffic Safety Administration began an investigation into brake failure problems involving about 6 million Chevrolet and GMC pickup trucks. This followed complaints from drivers about sudden brake-line failure as a result of corrosion.

References

• "Los Angeles Times"; U.S. looking into brake failure possibility in 6 million older GM trucks; Jerry Hirsch; April, 2010.
• All Car Advice: Sudden Brake Line Failure;
• Mobil1: Do-It-Yourself Projects