Question about 2004 Toyota Tundra

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My vsc engages all the time what could it be. I hit my brakes one day and now at random times my traction controll engages. Any way to find out why without spending alot.

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Ck all fuses
Ck brake fluid level
Ck base of brake pedal for wiring pinched /loose
Are red or yellow brake lights (dash) on = mechanic

Posted on Jul 28, 2010

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1 Answer

WHY DOES VSC & CHECK ENGINE LIGHT STAYON


diagnostic reader and or workshop time required to
to fix both VSC and engine light faults /codes


VSC is brake /traction related ..... this is one explanation

It would appear that system braking, traction control, and possibly some anti rollover control is dis abled if this warning light is on. So it is both fuel in efficient and possibly dangerous to drive with this light on.

engine light

there are stored fault codes in the engine computer module pointing to faulty sensors on the car needing to be checked or replaced




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Jul 06, 2014 | 2006 Toyota Highlander V6

1 Answer

Trac Off, ABS, and VSC indicator lights are on...I was involved in a front end fender bender but nothing major just the fender and bumper damage. but these lights would not go off. 2010 Toyota Sienna LE...


It is very common for all of these lights to come on all at the same time. They are all related to your Antilock Brake and Traction control system. ABS = Antilock Brake System, TRAC OFF = the traction control system is disabled - either because there is a malfunction in the ABS system or you have turned off the traction control button. VSC = Vehicle Skid Control. - (which uses the ABS and the Traction Control to function.)

The most common cause of these lights coming on is one or more defective wheel speed sensors. Although there are many other possible causes as well. Your ABS and Traction Control system must be scanned for fault codes to diagnose the problem. If you had damage to your wheels/axles during your "fender bender" this may have something to do with it. Otherwise it may just be coincidence that part of these systems failed right after your accident.

Apr 17, 2011 | Toyota Sienna Cars & Trucks

1 Answer

Vsc, engine and track off light are on the dash board, what could this indicate?


VSC is for "Variable Slip Control" and TRAC is for "Traction Control". Your car is equipped with an antilock brake control system that is also equipped with VSC and TRAC. If these lights are staying on all the time, it is an indication that there is a malfunction in the system and your car will not function properly in the event that you get into a situation where evasive maneuvers are needed and/or slippery conditions could cause you to lose control of your vehicle.

SYSTEM OUTLINE

The vehicle could be in an extreme over steering or under steering tendency due to unexpected accidents, road conditions, vehicle speed, or by other external factors. In such a case, this system automatically controls the engine output and the braking to each wheel, to decrease the extreme over steering and under steering.

  • To decrease extreme over steering tendency When the system determines that the over steering tendency is large, the system applies brakes to the outer wheels according to the degree of over steering, and creates a moment towards the outer side of the vehicle, to decrease the tendency of over steering. Also, when the brakes are applied, the vehicle speed decreases while the stability increases.
  • To decrease extreme under steering tendency When the system determines that the under steering tendency is large, the system applies brakes to the front or rear wheels according to the degree of under steering, to decrease the tendency of under steering.
  • VSC OFF SW The SW to send the VSC system into OFF mode. When the SW is pushed after starting the engine, the system will be in OFF mode, and the VSC off indicator light will turn on. When the SW is pushed again, the system will be in standby mode. When the engine is stopped and re-started, regardless of the VSC OFF SW, the system will be in standby mode.
Information to the driver
The VSC system informs the driver when the tire grip is about to exceed its grip capacity, by blinking the slip indicator light and turning on the buzzer. Accordingly, the driver is informed to drive more gently.

**************************************************************************************************************************
Diagnosis of this problem needs to begin with a scan of your VSC and Traction Control and ABS control modules to retrieve fault codes. It could be anything as simple and painless as a malfunctioning Wheel Speed Sensor, or something as expensive as a damaged Hydraulic Control Unit.

Nov 23, 2010 | 2003 Toyota Avalon

1 Answer

03 toyota 4 runner vsc trac and trac off light are on, what´s the problem with?


VSC stands for vehicle stability control and trac is traction control they are incorporated into the ABS system all receive signals from the wheel sensors you must use a digital ohms meter to find the one reading different and replace it in some cases you might find bad connections at the plugs.in any case your brakes will work fine you just wont have ABS braking or traction control

Nov 13, 2010 | 2003 Toyota 4Runner

1 Answer

2009 Vibe - Traction control & engine lights on, VSC off flashing


The exact same thing has just happened to my 2009 Vibe. It has 44,000 kms on it. We'll be getting it looked at in a few days. Did you ever get this resolved?

Mar 07, 2010 | 2009 Pontiac Vibe

3 Answers

Skid control randomly engages without turning or braking on toyota sequoia. The car is forced to slow down by the vsc system and then it releases with the vsc off and trac off warning lights showing up on...


I had the same problem. the jerking breaking and pulling to one side, but if u are going over 70 miles and that happens to you, you better start praying cause it will **** so hard that its hard to control. the yaw rate sensor (prox $400 on line) needs to be replace and adjustment (i beleave only the dealer can adjust). What I did to solve the problem is to eliminate the sensor ($0 cost). now my SUV drives and handle just like a regular truck without traction control. Toyota is not helping on this matter and dealers just dont care. I will not put my family thru the same scarry ride. My solution eliminate the sensor, the light is on @ all time but in return a smooth ride. Im not telling you to do what I did, but Im telling you it is the Yaw Rate Sensor. Good luck.

Aug 24, 2009 | 2001 Toyota Sequoia

1 Answer

Transmission Traction "Off" light stays lit with Traction button


The traction control system is controlled through the Anti-lock brake system. The way it works is if one of your wheels starts spinning the ABS applys the brake to that wheel to transfer power to the oppsite wheel that is getting traction. If your ABS is bad then your Traction control won't work. To check it I would find a parking lot on a wet day. In an open space mash in the gas. if you hear the ABS system kick in and you don't squall the tires then your good. My guess is you won't. What I would be worried about is will my ABS work. When checking the traction control is a good time to check the ABS. Acclerate to around 15 mph, then mash the brake as your live depended on it. If you hear a motor run and feel a vibration or grind in the brake peddal, then it works.

Jan 09, 2009 | 1997 Buick LeSabre

1 Answer

2003 Ford Windstar Traction Control engaging while driving


If it happens alot I would replace your traction control mechanism. Otherwise it may have just been one of those fluke car things

Jan 08, 2009 | 1998 Ford Windstar

1 Answer

TRACTION CONTROL.


that is what it is desgined to do - reduce acceleration and apply the brakes intermittently when the wheels spin. You have a switch you cn push to disable it. You need to disable each time you start car. See owner manual.

06-10: Traction Control 1996 Contour, Mystique Workshop Manual
DESCRIPTION AND OPERATION Traction Control System The optional traction control system is designed to control wheel spin when accelerating on slippery or loose surfaces. Traction control system is available only with anti-lock brakes. The traction control system includes the following components:
  • Hydraulic control unit.
  • Throttle control actuator (9N825).
  • Traction control switch.
  • Traction control warning indicator.
  • Front brake anti-lock sensor (2C204).
  • Rear brake anti-lock sensor (2C190).
The traction control system operates as follows:
  • System functions by transferring torque from the spinning wheel to the wheel with the most traction.
  • This is achieved by applying the brake at the spinning wheel through the hydraulic control unit or reducing the throttle opening.
  • Traction control braking and throttle control occur at vehicle speeds up to 50 km/h (30 mph).
  • At vehicle speeds above 50 km/h (30 mph), only throttle limiting control is used.
  • If speed control is operating when traction control system engages the traction control system will disengage speed control through the use of a speed control relay. This action is the same as applying the brake pedal with speed control engaged.
1996 contour
Traction Control Switch The traction control switch is located on the instrument panel, left of the steering column.

Oct 22, 2008 | 1995 Ford Contour

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