Why ABS is Dangerous (And How to Disable It)

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SOMETIMES, an idea that’s brilliant in theory is completely rubbish in practice. These ideas can include, but are not limited to, Marxist economics, Prohibition of alcohol in the ’30s, New Coke, the Ford Edsel, filling the Hindenburg with hydrogen, building the city of New Orleans below sea level, the chump who sued McDonalds over its hot coffee, high fructose corn syrup, and countless others truly terrible ideas over the years.

Add to that list anti-lock brakes on cars, commonly known as ABS. First commonly used in the early 1970’s on cars, the idea is brilliant in theory. The automaker installs a little speed sensor on each of the four wheels  – and when one or more wheels suddenly stops moving (indicating that the driver has pressed the brake too hard, causing the wheel to ‘lock up’), the car’s computer will over-ride the driver’s braking and release the brake momentarily, enough for the wheel to re-establish traction. Once the wheel is turning normally again, the computer will reapply the brake, rinsing and repeating until the car stops moving. This results in an odd “chirp-chirp-chip” sound coming from the wheels and a serious shudder that is often transmitted through the steering wheel – that’s the ABS working properly.

The reasons for installing these systems appear obvious – it’s vastly more difficult to control a vehicle when the wheels are locked up.

But is it safer? The answer is both yes and no. In the case of most drivers (assuming that we are talking about lowest common denominator here), the answer is probably yes. Today’s road driving test (as of 2005 when I took mine, at any rate) consisted of about fifteen minutes in a parking lot along with some time on back residential streets with a police officer riding shotgun. They didn’t teach me how to correct understeer, how to properly rock the car out of snow, or what to do when the car begins to skid.

To be fair to the DMV – it is probably on page 129 of the driving manual that you can pick up as a “study aid” before taking the written test. But does everyone actually take this to heart – and go apply it in a safe, empty parking lot so he or she knows how to react in an actual emergency?

The answer to that is, sadly, a decided ‘no’ and thus, in those cases, ABS is better than nothing. When faced with a low traction situation, an inexperienced driver is liable to push on the brakes harder and his bladder empties as he sails into the embankment. ABS corrects this by pumping the brakes for you and allowing someone to maintain a modicum of steering ability while still braking.

Except that stomping on the brakes and leaving your foot there flies in the face of every instruction ever given to you during a driving course or from any experienced driver.

The driver who knows what he’s doing benefits little from ABS. Time spent in an empty parking lot will quickly educate you on what “threshold braking” is – how fully you can press the brakes without locking up the wheels. Knowing your car’s mechanical limits is just as effective as ABS braking – and far safer, since invariably ABS like all mechanical systems fail at some point.

And in cases of limited traction such as snow, ice, and mud – ABS is actually detrimental to your safety, as it significantly (and needlessly) increases stopping distance. In snow or mud, a locked up wheel will dig into the snow – and provide considerable stopping power. If ABS prevents the wheel from locking in this case, almost no braking will occur. Consider the following situation, which happened to yours truly just today.

ABS Fail

The driver is going down a snowy road at 25 MPH (position 1 on my crude Paint drawing). He wants to turn right into Wal-Mart, so he begins getting on the brakes and after a few seconds begins to turn right into the side street. Problem is, his car has ABS (red line, position 2). ABS prevents the wheels from locking up, so they continue to spin freely – and there’s no braking happening.

In about two seconds, yours truly is still doing 25 MPH, and his right-turn isn’t producing the intended result, because the wheels have insufficient traction to turn the car at 25 MPH in the snow. And traction control – the mirror machinery of ABS that prevents wheels from spinning when you floor the gas pedal – prevented me from gunning it, getting traction, and forcing the vehicle to the right. So he sails directly into the embankment. (Position 3, red line). But-for the ABS preventing proper braking, he would have slowed considerably before the critical moment – and could have made the turn (position 3, blue line).

I spent the next ten minutes with a shovel, trying to clear enough snow to give myself a path out.

You could fairly say that I shouldn’t have taken the turn at that speed – and you would probably be correct. But that doesn’t change that I had the ability to correct any error, any spin, and any wheel locking – and that the ability was negated by a “safety” feature.

And that, friends, is unacceptably dangerous. I wouldn’t mind if the car had an “ABS override” or “traction control override” – but increasingly, cars do not have a button on the dashboard to this effect. In fact, Federal law mandated that all cars model year 2012 and later must include ABS and other “safety” features, ostensibly to reduce crashes.

Which leads me to the final premise of this article – how does the minority of drivers who are actually educated on how to drive in emergency situations defeat these “safety” features that just invariably get us into trouble?

In seven years of driving, I’ve owned three cars – the first lacked ABS, it was broken from day one in the second car, and only the third has functioning ABS. Which I will be disabling as soon as possible. I’ve had many, many close calls with other cars in that seven years – and I successfully avoided them all without the help of ABS. This system will get me into more trouble than it’s worth.

The most effective method (and the crudest) is simply to pull the corresponding fuse. Most cars have their fuse box under the glove box on the front passenger’s side, although this can vary. All fuse boxes will come with an accompanying diagram that illustrates which fuse serves which device on the vehicle. Consider this sample fuse box, taken from a Volkswagen Beetle.

NewBeetleFuseCard To disable ABS in the Beetle, just pull fuse #9 and you’re good to go. The ABS light will likely light up on your dashboard. Ignore it. If it bothers you, then I’ll gladly sell you some electrical tape to cover it up. Now take that car to an empty parking lot and educate yourself on what it can (and cannot) do.

Happy Motoring.

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97 Responses to Why ABS is Dangerous (And How to Disable It)

  1. Paul Kasanda says:

    “Mechanic”:
    I love your example of seat belts and air bags. Passive restraint seat belt resulted in numerous decapitations. The industry was lobbying to make them mandatory despite the deaths. Consumer outcry and lawsuits thankfully resulted in the eradication of passive restraint seat belts. Your advice to the families of decapitated vehicle occupants would be — “check your owners manuals”?

    Air bags! Another excellent example. They too resulted in numerous decapitations, mostly of children. In one cases this happened at less than 4 mph in a grocery store parking lot. If I recall correctly, airbags were already mandatory at the time of these deaths. The industry was forced to re-engineer airbags to sense the weight of occupants. Again, it was consumer outrage and law suits that brought this change. The advice to accept a technology just because its in the owners manual is not supported by history.

    While I cannot find the video online, it was either W5 or The Fifth Estate that reported the deaths of two state troopers when their car slid off the road into a ravine. They were unable to slow down in advance of a sharp curve. The vehicle that they were in pursuit of did not have ABS and had no difficulty navigating the same curve just moments in advance. The cause of the accident was deemed to be the ABS braking system. The original air date was between 1998 and 200x.

    Many Police departments subsequently disconnected ABS on all cruisers. Today, police interceptors sold by GM, Ford and others are sold with what is called “Police Calibrated ABS”. I believe one difference is that these systems do not operate below 8 MPH but there may be other differences including allowing for substantial wheel lock. ABS on cars sold in Australia is calibrated differently to allow wheels to lock on loose gravel surfaces. With out this calibration. numerous Auzzies complained that they had no brakes most of the time. ABS brakes are disconnected on every Rally race car. The disconnection is voluntary but every driver does it becasue it is the only way to survive a rally race. ABS brakes have been banned on formula one cars since 1990.

    Outside of police departments, Australians, and race car drivers, car drivers have been compelled to drive vehicles that are considered unsafe by the aforementioned.

  2. Gerald Ulmer says:

    I have had problems with every cars braking system with ABS. They are a sever safety hazard to all drivers except ‘Blue haired old ladies who most likely shouldn’t be driving anyway.”

  3. Julie Garcia says:

    To the author. Do some research on the elderly woman that sued McDonald’s for hot coffee. She was severly burned and suffered third-degree Burns and disfigured in the genitalia area. She was only asking for $20,000 to cover her medical expenses and loss of income. Here’s a story you can read https://www.caoc.org/?pg=facts

    • Dave says:

      To Julie, I’m guessing the elderly lady spilled her coffee because her ABS kicked in and she couldn’t stop her car. 🙂 Seriously – ABS is not good. Go ahead and hit a pothole on a clear summer day with totally clear roads and jump on your brakes because something or someone is right in front of your car, let your ABS kick in and, depending on your speed, it will take anywhere from 5 – 25 feet longer to stop than if you didn’t have ABS. I know, because it has happened to me. If ABS is so good, how come it’s not on race cars that are driven by professional drivers? People who drive around race tracks at 200mph know that their lives are on the line at every second, if ABS was good, they’d all use it – but they don’t. Hmmmm.

      • Carlos says:

        Even though I agree with you in the pothole example (been through the same situation but corrected it by braking harder), ABS is not allowed on formula cars because it makes it easier for the drivers. Just like traction control and automatic transmission.

      • bn880 says:

        Actually it was not allowed on F1 cars as it was making it “easier” yes, but also it was making it automated and boring removing competition between drivers and moving it into technology. Plus drivers lost some control of the vehicle by a pre determined automatic system. Additionally, the systems in F1 were not exactly the same as you get in road cars, and nobody really dug deep into the issue of ABS in unrecoverable spins and loss of directional control. (AFAIK) ABS was not on the cars for too long.

      • Paul K says:

        How many F1 circuits have pot holes, ice, sand, gravel, or snow? None. Therefore, any 1994 determination by the F1 circuit on ABS is irrelevant to modern-day concerns about ABS safety when ABS brakes cause drivers to overshoot icy intersections, find themselves unable to slow down prior to an icy curve, loose all brakes over pot holes, and to experience only a fraction of potential braking power on wet surfaces.

        The relevance of ABS on F1 circuits to the relevance of ABS in city traffic reminds me of the original mid 90’s studies on ABS safety.

        The studies that included adverse road conditions (like gravel and snow) found that accidents on ABS equipped vehicles was higher. The only studies that arrived at a more neutral conclusion were rigged. The method of rigging the data was by excluding adverse conditions and also by excluding the most popular three models of vehicles. I’m referring to the US government NTSA studies. The official rational for the model exclusion was that these three highest selling volume models somehow attracted bad drivers. That of course makes no sense because some of those models were ABS equipped and some were not.

        If indeed bad drives gravitated towards certain models then their accident rates should have been split equally between ABS and Non-ABS. The obvious conclusion is that the “scientists” were cherry picking the data to find some combination of cars that would allow them to arrive at the conclusion that ABS equipped vehicle accident rates were just a little higher, but not significantly higher. So they eliminated the three models that did have significantly higher accident rates for ABS but they never published just how significant. Potentially, the most popular vehicles may have had 20 or 30 percent higher accident rates and those numbers were withheld.

        Remember that a first set of NTSHA studies did find significantly higher ABS accident rates and that this finding caused the NTSHA to reverse its decision to make ABS mandatory on US vehicles. A second round of studies that cherry picked the data was not able to find ABS brakes were safer. Instead, the cherry picking technique was used to arrive at the conclusion that ABS accident rates were higher, just not significantly higher. And even though the obvious conclusion of this study was that mandatory ABS brakes would not decrease accident rates, ABS still became mandatory.

        ABS became mandatory as a result of industry lobbying. Typically that involves campaign contributions (AKA) bribes. The fact that the scientists tried so hard to cherry pic the data to arrive at a less negative conclusion suggests that their findings were primarily a representation of the conclusion that they were told to arrive at.

      • Dave says:

        Beautifully stated. Bottom line is always the almighty dollar. Somebody in power was making money by enforcing ABS be put on cars.

      • bn880 says:

        I don’t think it’s just business, it’s that for bad drivers ABS is on average better than no ABS. And most people on the roads are terrible drivers in terms of car control skill.

      • Paul K says:

        Every driver is a bad driver when they are headed towards an icy intersection or a stopped vehicle with no brakes. The idea that bad drivers are better off with little or no ability to brake is just silly.

        Bad drivers have poor attention, they drive too fast, and they underestimate stopping distance. What do you think happens when depending on the road surface the ABS braking distance increases 20% to 100% compared to conventional brakes. These bad drivers have more accidents when their braking power is curtailed.

        Most accidents are intersection collisions and rear-end collisions. Whether a driver is good or bad, ABS makes these collisions more likely, and more sever.

        The only drivers who might avoid an accident via ABS interventions are those who would stand on the brake pedal on a slippery surface with no effort to modulate the brake force.
        Is it not outrageous that this is exactly what ABS brakes teach drivers to do. The ABS industry has succeeded in denying the majority of drivers the opportunity to learn the critical collision avoidance skills of emergency braking and threshold braking (two different skills). They have turned every driver into an under skilled driver. They have made every new car less capable of stopping in time to avoid a collision.

        The new generation of drivers has no idea what they are missing. If you drove in the 70’s and 80’s, then you may know how bad ABS brakes are. The industry is erasing the knowledge and skill to differentiate. The next generation of drivers lacks the knowledge to recognize that vast numbers of collisions, injuries and deaths would not be happening if ABS had never been invented or if ABS was removed.

  4. shahzad says:

    my abs is leaking break oil. whats the solution.

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