Question about 2005 Ford Focus

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Wheels lock even though the car has ABS fitted

The ABS light is not on except when the ignition is turned on.
It goes oyut after a few seconds.
There are no unusual noises but when I had to break hard the wheels locked and there was not judder on the pedal like I have felt on other cars fitted with ABS

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  • gordon34 Mar 05, 2009

    Cheers, I will take it to the garage where I bought it next week.

    Thanks for the quick response. :-)

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Sounds like a drive pump issue to me but not understand why no light on unless someone has disconnected it for easier sales? but cars with abs are usually not designed to run without it and could be quite dangerous. it is a costly fix but prob better in garage hand. hope this helps

Posted on Mar 05, 2009

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How too take abs light off after new brakes are fitted


Fitting new brakes wouldn't usually put the abs light on unless you disconnected the abs and then switched on the ignition, made an unfortunate mistake or coincidentally an abs fault occured naturally.

The abs light is supposed to illuminate for a few seconds when the ignition is switched on and then go out signalling there are no faults. If the abs light is on it means a fault has been detected.

Early systems would cancel the light when the fault had been located and rectified but I believe modern systems require the use of diagnostic equipment.

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Anti lock brake system light comes up when there is issue with car brake systems.It can be low brake fluid or faulty ABS fuse or its issue with brake system or assembly.Your vehicles brake system needs inspection.

To troubleshoot these issue,i suggest you to refer the help links provided below.There are direct links with accurate solution,for these specif issue.

Click the link below and follow the procedure:------

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http://howtobyme.blogspot.com/2011/11/abs-and-service-light-comes-on.html

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http://howtobyme.blogspot.com/2011/11/abs-brake-lights-warning-indicator.html

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http://technoanswers.blogspot.com/2011/11/how-anti-lock-brakes-work.html

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http://technoanswers.blogspot.com/2012/01/anti-lock-brake-light-stays-on-all-time.html

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http://repairhelpcenter.blogspot.com/2012/01/abs-light-comes-on-and-car-makes.html

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http://repairhelpcenter.blogspot.com/2011/11/abs-trouble-codes-for-all-1994-00-acura.html
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These details will help.
Thanks.

Nov 24, 2012 | Ford Transit Connect Cars & Trucks

2 Answers

How to turn off yellow break light flashing on dashbord on 1999 audi a8


check the conections on the lomb clean the inside of the bulb holder might be a loose wire or conection if light still on the computer in the car is saying that there is a bulb blown if all else fails disconect the battery for half an hour if its still on pass might need reseting

Aug 24, 2012 | 1999 Audi A8

2 Answers

Anti-lock system light on


Anti-Lock Braking System (ABS)
Purpose Anti-lock brake systems (ABS) - generally also referred to as anti-lock
systems (ALS) - are designed to prevent the vehicle wheels from locking
as a result of the service brake being applied with too much force, especially
on slippery road surfaces.
The idea is to maintain cornering forces on braked wheels to ensure that
the vehicle or vehicle combination retains its driving stability and manoeuvrability
as far as physically possible. The available power transmission
or grip between tyres and carriageway should also be utilised as
far as possible to minimise the braking distance and maximise vehicle
deceleration.
Why ABS? Although today commercial vehicle brakes are designed to a very high
technical standard, braking on slippery roads often results in potentially
dangerous situations. During full or even partial braking on a slippery
road it may no longer be possible to fully transfer the braking force onto
the road due to the low coefficient of friction (friction coefficient (k)) between
the tyres and the carriageway. The braking force is excessive and
the wheels lock up. Locked wheels no longer provide any grip on the
road and are almost incapable of transferring any cornering forces
(steering and tracking forces). This often has dangerous consequences:
- The vehicle becomes unsteerable
- The vehicle breaks away in spite of countersteering, and starts to
swerve.
- The braking distance is significantly increased
- Tractor-trailer combinations or semitrailer trains may break away or
jackknife.
Load sensing valve influence On dry roads today's load sensing valves (ALB) alone are often capable
of preventing the wheels from locking if the vehicle is unladen; they also
help the driver to effectively grade the braking process on wet road surfaces,
but they are unable to prevent locking as such (no slip monitoring).
In addition, they are unable to counteract any overreactions on the
part of the driver, or any variances in frictional or adhesion coefficients
which may apply to different sides of the vehicle, or indeed to its different
axles (?-split road surfaces).
Benefits of ABS: Only the Anti-Lock Brake System (ABS)
- guarantees stable braking characteristics on all road surfaces.
- maintains steerability and generally reduces the braking distance
- prevents vehicle combinations from jackknifing
- reduces tyre wear.
Limits of ABS Although ABS is an effective safety device, it can not suspend the limits
defined by driving physics. Even a vehicle fitted with ABS will become
uncontrollable if driven too fast around a corner.
So ABS is not a licence for a maladjusted style of driving or failure to observe
the correct safety distance.
4
ABS Training Anti-Slip Regulation (ASR)
Anti-Slip Regulation (ASR)
Why ASR? Increasing the engine output (accelerating) on a slippery road surface
can easily lead to the maximum adhesion on one or all powered wheels
being exceeded causing them to spin, especially if the vehicle is unladen
or partially laden.
Spinning wheels when driving off or accelerating represent a safety risk
just like locked wheel do when braking.
Reasons - Wheels that spin transfer just as little cornering force as locked
wheels.
- They also no longer transfer any tractive power onto the road.
Consequences - Vehicles that do not move or get stuck.
- Vehicles that can no longer be steered, jackknife on uphill uphill
gradients, or swerve in corners.
Benefits of ASR ASR prevents the powered wheel from spinning and provides the following
benefits:
- Tractive power and cornering forces are maintained.
- Stable driving behaviour is ensured when moving off, accelerating
and negotiating corners on slippery roads.
- The indicator lamp (if installed) is used to warn the driver of slippery
road conditions.
- Tyre wear is reduced to a minimum, and the motor vehicle's drive
train protected
- The risk of accidents is further reduced.
ASR and ABS: ASR represents a worthwhile addition to an ABS-controlled braking system.
All that is required to turn ABS control into full ABS/ASR control is
an ECU with the additional ASR function and a few additional components
for controlling the differential brake and the engine. This why ASR
is only available in combination with ABS.
Even a differential lock for off-road use and ASR do not exclude but complement
each other.
Limits of ASR The traction capacity of an all-wheel driven commercial vehicle can not
be achieved by a motor vehicle with only one driving axle - not even with
optimal ASR.

anti-lock-system-light-vi1ay411tmzjz03ru4fkmxgj-5-0.jpg

anti-lock-system-light-vi1ay411tmzjz03ru4fkmxgj-5-2.jpg

Feb 28, 2012 | 1994 Cadillac DeVille

1 Answer

How can I stop my ABS brakes from occasionally activating even when I come to a gentle stop. I coast to a stop, hit the brake, and the front end feels like it's gonna fall off. The sound it makes is...


You can unplug the ABS, and it will be disabled. Doesn't sound like that's the problem, though. Have your front end checked, brakes, suspension, wheels, CV axles, everything. Before it cripples you on the road.

Oct 13, 2011 | 2001 Daewoo Leganza

2 Answers

My abs warrning light is showing on my bmw 316 and does not go out..


On vehicles equipped with antilock brakes (ABS), a second warning light is provided to warn if a problem occurs within the ABS system. The ABS lamp comes on when the ignition is turned on for a bulb check, then goes out after the engine starts. If the ABS warning light remains on or comes on while driving, it indicates a fault has occurred in the ABS system.

What happens next depends on the nature of the fault. On most applications, the ABS system disables itself if the ABS warning light comes on and remains on. This should have no effect on normal braking. Even so, ABS will NOT be available in an emergency situation or when braking on a wet or slick surface.

CAUTION: If the brake warning light also comes on and remains on while the ABS warning light it on, it signals a serious problem. Your vehicle may not be safe to drive. The brakes and ABS system should be inspected immediately to determine the nature of the problem!

If the ABS light comes on momentarily then goes out, the nature of the problem is usually minor and the ABS system usually remains fully operational. Some vehicle manufacturers call this kind of fault a "nonlatching" fault (meaning it isn't serious enough to disable the ABS system).

Regardless of the type of fault that occurred to trigger the ABS warning lamp, a special "code" is recorded in the ABS module's memory to aid in diagnosing the problem. On some vehicles this code can be retrieved by putting the ABS system into a special diagnostic mode. The code is then flashed out through the ABS warning lamp. The code number refers to a diagnostic chart in a service manual that must be followed to pinpoint the faulty component. On other applications, a special "scan tool" must be plugged into the vehicle's diagnostic connector to read out the fault code.

Jun 07, 2011 | 1995 BMW 3 Series

1 Answer

The ABS light comes on, and sure enough on slipery road conditions, there's no ABS. BUT when it's icy, the ABS light on the dashboard goes out, and checking to see if I have ABS, sure enough I do. It's...


the abs warning light also works with the electronic traction control, (or traction control,same system,different names) and when icy, stops the wheels from spinning,above about 15 mph.(the abs dont work under 5mph) so if im right regarding your question,your car is doing what its supposed to,stopping the driving wheels from spinning/locking up.the warning light comes on when one or the other is doing its job.(working).the trick is to drive so that the warning light doesnt come on..... boring.

Jan 28, 2011 | 2000 Volkswagen Beetle

1 Answer

Service vehical soon anti lock and trac off comes


The computer system reset every time you turn key off. The system then does a 3 second bulb check to verify all is functioning correctly. If all is well stays off. The reason why it only turns on when moving is because the abs sensors are either not picking up any vehicle speed from one of the wheels or there is a faulty connection in wiring at one of the wheels. Need to have vehicle scanned by a good shop and verify which wheel is causing the problem. If light is on ABS and traction control systems are disabled.

Jul 21, 2010 | 1998 Oldsmobile Intrigue

1 Answer

Brake peddle is hard and bled all four wheels and no fluid comes from the back wheels


If you have ABS fitted - it could be that it has detected a leak (yes - you bled them) - but in this case it has sealed off the (defective) rear wheels, and is just giving pressure to the front.

If you turn your ignition on - and it comes up ABS light, then I'm afraid you need a scanner to reset the ABS system as it has now probably locked up in this position.

Just another way for dealers to grab your wallet. Sorry.

Sep 26, 2009 | 1996 Cadillac DeVille

1 Answer

Dodge Grand Carivan 1997, directional problems,asbs light, heat


ENSURE THE AIR PRESSURE IN ALL 4 TIRES ARE THE SAME. CHRYSLER UNWITTINGLY HAS A TPMS (Tire Pressure Monitor System) by having an ABS light.
When 1 tire turns slower (or faster) than the other 3, the ABS lamp illuminates when it thinks the wheels aren't turning the same speed, (they aren't). When properly inflated, (or all 4 at least at the same pressure, the ABS Lamp will go out soon, (not immediately). Maybe on the next drive cycle.

May 16, 2009 | 1999 Dodge Grand Caravan

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