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Brake & Front End Babcox
Brake & Front End Babcox
SAE J2534, Part II: How Much Money Are You Losing By Not Doing Vehicle Reflashing?

by Donny Seyfer

Viewpoint: Replacement Auto Part Standards And Regulations

by Andrew Markel

The Ins And Outs Of The SAE J2534 Vehicle Communication Interface

by Donny Seyfer

Stick To The Facts: Dealer Stickers Should Be Banned

by Andrew Markel

There Is No Trough: Looking For The Sweet Spot In The Aftermarket

by Andrew Markel

Honesty And Education: Is Giving Hope Your Crutch Behind The Service Counter?

by Andrew Markel

The Art Of Setting Goals For Your Business: Continuous Improvement Helps Pinpoint Opportunities For Growth

by David Rogers

Four Creative Ways To Improve Employee Morale

by Brake and Front End Staff

Reprogramming And Service Information Common Ground

by Andrew Markel

Rental Car Evolution Presents Service Opportunities & Can Extend Your Shop’s Car Count

by Donny Seyfer

Opinion/Automatic Braking System
8 months ago

Blame Game: Will Automatic Braking Systems Be The Answer Or A Problem?

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Andrew Markel

Andrew Markel,Editor, Brake & Front End Magazine

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Andrew Markel is the editor of Brake & Front End magazine. He has been with Babcox Media for 15 years. He is a technician and former service writer and holds several automotive certifications from ASE and ­aftermarket manufacturers. He can be reached at [email protected]

RETRO 1974: Refilling Catalytic Converters At The Shop

VIDEO: How Rust And Corrosion Affect Wheel Speed Sensors

VIEWPOINT: Auto Shows And The Battle Between Electric And Internal Combustion Engines (ICE)

VIDEO: Applying Preload To Bearings

VIDEO: Spalling Effects On Wheel Bearings

VIDEO: Spalling Effects On Wheel Bearings

Ball Joint Inspection And Service

Wheel Bearings And Wheel Speed Sensors

Brake Job: 2006-2014 Honda Ridgeline

2007-2011 Ford Expedition And Navigator Air Suspension


There has been a lot of talk about automatic emergency braking systems (AEB). Starting September 1, 2022, these systems will be mandatory for cars and trucks under 8,000 lbs. The National Highway Traffic Safety Administration (NHTSA) estimates that AEB will prevent 28,000 crashes and 12,000 injuries by 2025. This is great for the new car buyer, but what about the car owner who needs to maintain the vehicle five or 10 years from now?

As sophisticated as AEB, ABS and ESC systems can be, they still require 60-year-old disc brake technology to work. This technology works great when the car rolls off the production line. But in the field, when the car is on its second or third pad slap with bargain parts, it is unclear how the AEB will perform.

Brake Failure
Brake failure is easy to spot with the naked eye in the form of leaking brake fluid, glazed brake pads and a pedal that goes to the floor. What is difficult to identify by a technician, driver or crash investigator is a brake system that is compromised due to mechanical problems or low-quality parts.

Mechanical problems like worn friction material, seized guide pins or rotors below specifications won’t cause the vehicle to stop working and a driver might be able to nurse the brakes along until their next paycheck. But, during that one moment where they need the brakes to perform during a human or autonomous panic stop, it may take longer to brake. Even if the vehicle has ABS and AEB, the systems can’t compensate for bad brakes.

When a crash occurs, compromised brakes are hardly ever investigated. The condition of the brakes (outside of the parts being there) and the hydraulic system having integrity is never taken into account. Ninety-nine percent of the time a crash is usually chalked up to driver’s error if the vehicle slams into the back of another car.

But what about the AEB system? No AEB system can diagnose the condition of the pads, rotors and calipers.

It is difficult to test caliper clamping force, friction levels and even the operation of the ABS system on a vehicle. Even finding baselines distances for a vehicle of the result from a government test is impossible.

Driver error is easy to prove. It has always been a driver’s responsibility to operate their vehicle safely. This includes knowing how their brakes will perform and how much pressure should be applied to bring the car to a safe stop. In most traffic courts, it is the driver who is accountable, not the vehicle. This is kind of scary to technicians because most drivers have no idea how their brakes work much less an AEB system.

A distracted driver can add seconds to reaction times and feet to stopping distances. Even if the driver is not distracted or is automatic, if the brakes are not functioning as engineered, a crash can occur. But who is to blame? The car? The driver? AEB systems? Or the pads you just installed?

AEB can save lives, but we are already starting to see its weaknesses when the system is serviced in the field. We have seen cases where bumper covers that are too thick or thin and windshields with the wrong coatings. When the first fatal AEB crash happens to a vehicle with 125,000 miles it will make the Tesla problems look small by comparison.

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