Question about 2004 Kia Optima

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ABS and TCS light shows after switching on the car

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Any light that stays on in the dash indicates that the particular system has malfunctioned and is not working. In your cas the anti-lock brakes and the traction control system is out. It is probably a wheel speed sensor that is causing both. A trip to the dealer or local tech with proper diagnostic tools is in order. You may want to try and disconnect the car battery for a few minutes and than open a car door (this will drain any remaining voltage in the system) reconnect battery , test drive. If lights return - get car to shop

Posted on Oct 17, 2009

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1 Answer

How do i reset my traction control


Is your trac light lit ? If so it has a problem an till it is fixed , you can't reset it. Need to have it checked for DTC'S - diagnostic trouble codes .
If the ABS control module detects a malfunction, it will disable TCS and will command the BCM to turn the TRAC LED Off. The driver can also disable TCS, if desired, by depressing the TRAC switch. When the driver depresses the TRAC switch, the ABS control module will disable TCS and will command the BCM to turn the TRAC LED Off.
DTC C0276 TCM Traction Control Not Allowed
DTC C0275 or C0276
The TCM sends a serial data message to the electronic brake control module (EBCM) indicating that torque reduction is temporarily not allowed.
DTC C0550
DTC C0896
The electronic brake control module (EBCM) is required to operate within a specified range of voltage to function properly. During antilock brake system (ABS) and traction control system (TCS) operation, there are current requirements that will cause the voltage to drop. Because of this, voltage is monitored out of ABS/TCS control to indicate a good charging system condition, and also during ABS/TCS control when voltage may drop significantly. The EBCM also monitors for high voltage conditions which could damage the EBCM.

Oct 16, 2015 | 2004 Saturn VUE

1 Answer

ABS light come on when i am towing


the tcs system is detecting the weight and sway of the trailer because the load on the hitch is too much- that's the simple answer.

The ABS and TCS work together - the ABS system is what detects wheel spin and tell the TCS which diverts and/or control power.

Oct 08, 2014 | 2008 Mazda MAZDA6

1 Answer

Light abs traction control stays 1998 buick park avenue


PRE-DIAGNOSTIC INSPECTIONBefore diagnosing ABS/TCS, perform a comprehensive visual inspection of system as follows.Check ABS/TCS wiring harness connectors for looseness. Check harness routing; pay particular attention to wheel speed sensor wiring harness routing. Check fuses No. 1D, 5B and 6B in instrument panel fuse block. Check fuses No. 1 and 2 in underhood fuse block. Check brake fluid level in master cylinder reservoir. Check brake fluid level in Pressure Modulator Valve (PMV) assembly reservoir. Ensure parking brake is fully released. Ensure parking brake switch is functioning properly. Always perform ABS/TCS system functional check before using DIAGNOSTIC CODE CHARTSThe EBCM/EBTCM has self-diagnostic capability, which can detect system failures. Fault codes stored by EBCM/EBTCM can be displayed using Tech 1 scan tester. There are no provisions for flash code diagnostics.Begin ABS/TCS diagnosis with PRE-DIAGNOSTIC INSPECTION procedure. If failures are found during pre-diagnostic inspection, perform necessary repairs, and proceed with ABS/TCS FUNCTIONAL CHECK. See Fig. 5 .If no failures are found during pre-diagnostic inspection, go to ABS/TCS FUNCTIONAL CHECK. See Fig. 5 . The ABS/TCS FUNCTIONAL CHECK will either indicate ABS/TCS is functioning properly or direct technician to various diagnostic procedures such as diagnostic charts, symptom diagnosis or BRAKE warning light diagnosis.CHART D - TRACTION OFF WARNING LIGHT ON CONTINUOUSLY & NO DTC SET (BUICK WITH UH8 OR U2A INSTRUMENT CLUSTER)Circuit DescriptionWhen ignition switch is first turned to RUN position, EBTCM goes through a self-test, which lasts 2-4 seconds. During self-test, EBTCM commands TRACTION OFF indicator warning light on. Powertrain Control Module (PCM) can also command EBTCM to set a Code 75 which will illuminate TRACTION OFF indicator.Traction control switch is located either on instrument panel center trim plate or driver's front door trim panel. Switch allows driver to select traction control mode (on/off). When traction control system is turned off, TRACTION OFF warning light comes on.EBTCM monitors transaxle temperature through

Jul 12, 2014 | 1998 Buick Park Avenue

1 Answer

How to shut off abs light


TCS light will be on to notify you when it is on/off..ABS light should not stay on while driving...if this occurs, there is a problem with your ABS system

Apr 05, 2014 | 2006 Kia Magentis 2.5

1 Answer

Abs light stays on and the esc indicator light also but when you start it it shows it off


the operators guide shows what these mean and what to do.
lost that>? i have one, and 08 JK.
pages 105 to 116
it resets each drive. the opr guide says that, and does.
its a very complex system, you should RTM.

ill quote your missing pages.
ABS:
If the light remains on after start-up or comes on and
stays on at road speeds, it may indicate that the ABS has
detected a malfunction or has become inoperative. The
system reverts to standard non-anti-lock brakes.
ESP:/TCS
The ESP/TCS Indicator Light (located in the instrument
cluster), starts to flash as soon as the tires lose traction
and the ESP system becomes active. The ESP/TCS Indicator
Light also flashes when TCS is active. If the
ESP/TCS Indicator Light begins to flash during acceleration,
ease up on the accelerator and apply as little throttle
as possible. Be sure to adapt your speed and driving to
the prevailing road conditions


is this clear? if not ask more, questions , more specific and we can peel the onion deep as you want.
also wiki this topic, to understand it ...

Mar 08, 2014 | 2007 Jeep Wrangler Unlimited Rubicon 2...

1 Answer

TCS light and Brake light stay on.


The main reason the TCS light is on is because there is a problem with the main brake system. The traction control system uses the hydraulic brakes to help keep the car on the road in a skid or other event.
If the main brake system is faulty, the TCS can't do its job.
The hydraulic brake system may be working fine in your case, but the TCS does not know that.
I wonder if that low fluid switch can be bought separately ??

Jul 26, 2012 | 2003 Honda Accord

1 Answer

Abs & TCS-off dash lights both stay on. Pushing the TCS off switch does not help. "seem" to stop fine. Emergency brake seems to be fully off, not dragging. My wife encountered a patch of ice...


Hello: If there is a problem in the ABS it will bring on the tcs light as well. To determine what is causing the problem you need to have the ABS checked with a scanner to get the code. Then trouble shoot the components that the code leads you to. Normal braking is available with the light on but TCS is not as it relies on ABS for functioning the TCS.

Mar 04, 2011 | 2008 Saturn VUE

1 Answer

How do you reset the ABS and TCS lights on a 2002 Mazda 626?


these reset each time the key is turned on to start the car, if they remain on there is a problem in the system, the ABS and TCS are run by the same system control module, have it tested to see what fault code shows up to indicate what part has failed.

Aug 23, 2010 | 2002 Mazda 626

1 Answer

About a week ago, having switched on and set off, all the brake warning lights stayed on, that is the ABS, TCS, TCS OFF and Brake System Warning lights. The brakes continued to work OK with no extra travel...


abs=anti-lock brake system/ tcs=traction control system ==sounds like you have a problem with ur abs possible bad sensor or a wiring connection problem when abs shuts down [trouble light] your brakes will work normal but if u stomp or brake hard the brakes will lock up skid and the tcs doesnt affect brakes but if u accelerate hard tires will spin lose traction check the wiring and connections to the sensors sometimes debris hits the wire and loosens the connection if looks ok and light is on have car scanned for the trouble code most auto stores such as auto zone/advanced auto offer this service for free the code will what and where the problem is so repair can be made

Jul 18, 2010 | 2000 Mazda 626

1 Answer

I have a 97 STS. I just changed the rear brakes -


i have similar problem on my 97 SLS only current codes are TCS C 1235 and MSM B2120

Aug 02, 2009 | 1997 Cadillac Seville

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