Prius vsc light

2007 Prius. Model: Two. Have change my abs pump unit, according to the dealer that was the problem. Once chance the car has the same exact issues, when I slam on the brakes to see if the antilock brake system is working properly the front wheels lock. The lights on the dashboard abs vsc brake and (!) are on, I try to reset them using the …

Prius vsc light. Once I did the VSC reset through Techstream with the car ACTUALLY level, the brake warning, ABS, AND the VSC light all started flashing where before it would only flash the brake warning and ABS lights. The code it randomy throws a C1247 "Brake pedal stroke sensor", which from what I can find is a faulty logic in the skid control ECU.

Cold weather doesn’t play nice for it at all, as I’m sure folks living in the cold know. If the voltage is low enough the Prius’s computer will have an aneurysm and do things like what’s in the photo. Try getting a jump from someone or use a jumper box to be sure it isn’t the 12v.

The 2023 Toyota Prius is a popular choice among eco-conscious drivers who prioritize fuel efficiency and sustainability. However, beyond its impressive hybrid technology, the Prius...New (used) Prius owner here and this morning had the amber vsc light come on while driving to work. It rained heavil last night and the roads were wet, but I wasn't spinning the tires or skidding out of control.ABS VSC ! and BRAKE Light on. I have a 2004 Prius with 65,000 miles and the other night the VSC/ABS/!/BRAKE lights came on and stayed on. The brakes don't work like they normally do anymore. I have read on here about some people having similar problems and it turning out to be corroded connectors/right (passesnger) rear wheel sensor.The electrical system in an RV is complex, with the ability to operate with either 12-volt or 100-amp service. Inspection of the batteries and converter may help solve the answer o...Check and make sure your abs relays are pushed all the way in. Located under the hood is the fuse box. I just got the car back from Toyota. It is believed that the dying 12v battery caused the problem. Although I replaced it they had to perform Linear Valve Offset Initialization and then the brakes went back to normal.Prius lights VSC and orange brake light coming on . Hi everyone, not sure if this is the right place to post but I have been having trouble with my beloved 2009 Toyota Prius 2 Gen for the last 6 months. ... a yellow/orange brake indicator light as well as a yellow/orange VSC light coming on. After switching the car off and on again, the yellow ...Mar 28, 2012 · A year or so ago I replaced my ABS pump with an ebay module allegedly from a low mile Prius. Ever since then the ABS, VSC, and brake system warning light (exclamation point and circle) have been on continuously. Recently, when driving through heavy rain or through standing water the emergency brake light also comes on and I lose front brakes.

What's Really Going to Light a Fire Under This Market?...QQQ As we begin a new trading week, there's certainly lots to think about. The question is what's important and market-...Apr 14, 2016 · Vehicle: 2007 Prius. Model: Two. Today, I started up my car (2007 Prius, 150,000 miles on it) after driving a good while, and (in that order) the ABS VSC and (!) lights came on. I have not noticed any difference in how the car drives, just a bit less MPG's, and the brake pedal is slightly more stiff. I have put it into diagnostic mode and it ... Hey everyone, 2008 Prius touring w/ 180k miles. Long time lurker,first time poster. I love this place and appreciate all of the help with other issues I’ve had. Anyways have been reading about my problem on here for a few hours and haven’t found an answer. The RTOD, vsc, check engine, and the circle with ! Is on.Jul 27, 2011 · Patrick is a well known Prius DIY Guru so his suggestions are to be followed as well. Second, your 12v battery looks weak so replace it. It should not drop below 12v after resting. the higher voltage 13.6-13.8 is seen when the Prius charging system is active, It says little about the condition of the 12v battery. Unlike the Tesla Model S battery, the Toyota Prius battery is light and easy enough for thieves to steal in 20 minutes. By clicking "TRY IT", I agree to receive newsletters and pro...An available option on Prius, VSC also enhances the steering response to further improve performance." -- Michelle Vadeboncoeur, [email protected] 2001 Aqua Ice Opalescent 2004 Black BC ... I didn't see the VSC light but I wasn't looking at the dash either. There was a voice announcement when I made the sharp turn but the volume …The first step in diagnosing VSC light issues is to perform a visual inspection of the vehicle. Start by examining the exterior of the vehicle for any visible signs of damage or loose connections. Inspect the wheel speed sensors, steering angle sensor, and yaw rate sensor for any physical damage or debris accumulation.Vehicle: 2007 Prius. Model: Two. If you disconnect the 12 volt battery the first time you try to start the car it will throw all those code lights. Its just because all the keep alive 12 volt ecu's went off line when you unplugged the battery. They do not log any codes they just launch all those lights.

May 25, 2020 ... ТОЙОТА ПРИУС 20 | ЗАГОРЕЛСЯ CHECK ENGINE, VSC И КРАСНЫЙ ТРЕУГОЛЬНИК PRIUS 20 | ПРОБЛЕМА И ЗАМЕНА ВВБ. 29K views · 3 years ago KYIV ...more ...2007 Prius abs, vsc and sometimes triangle light!! Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by LUNA95, Aug 15, 2023. LUNA95 Junior Member. Joined: Mar 24, 2013 10 1 0 Vehicle: 2007 Prius Model: II.2006 Prius. Model: N/A. It's a 2006 with 18000kms. Change brake pads and then abs and vsc lights came on. Drove as it is then then red triangle came on. Now the car is not having power and moves very slow. Tried changing relays in the 12v fuse box and did a diagnosis by a 3rd party then the red triangle and engine light went off but abs,vsc …Jan 31, 2021 · In the brake section, there are separate tables for codes from ABS, VSC, and ECB (the (!) light). Some of the blink codes can overlap, so you have to make sure you have found the code in the right table for the light that blinked it. You should re-check the code you wrote as '5' ... the blink codes are all two digits. California. Vehicle: 2009 Prius. Model: Four Touring. The lights for brake, ABS, (!) and VSC light. I've check my 12V bolt (charged at 12V), I've topped all my fluids and I tried using a paperclip in my OBD2 port (top 5th from the right and bottom 4th from the right) + pushing brake 8 times and I cannot seem to clear the warning lights.

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BLACKSBURG, Va., July 21, 2022 /PRNewswire/ -- VPT, Inc. (VPT®), a HEICO company (NYSE:HEI.A) (NYSE:HEI), introduces the VSC Series of commercial ... BLACKSBURG, Va., July 21, 2022...Model: II. It is possible to short pins 3 and 14 on the dlc3 connector (the one under the dash) to clear the skid control ECU, and get blink codes for the errors. Search for "pins 3 14 abs vsc" here and find the many posts relating to this. For example: ABS, VSC Lights... Weird!! | PriusChat.Second opinion] 2007 Prius. Master Warning Light, VSC, Check Engine and Brake System Warning Light came on after loose gas cap. Only brake and VSC lights turned off after we tightened the cap. Recentl … read moreUsed a jumper between the CG (#4) and TC (#13) pins in the OBD II port and read the codes. (!) flashed a 66 and 67, ABS flashed a 42, and VSC flashed a 45. In May, checking these codes and following the 8 depressions of the brake pedal in 5 seconds would temporarily extinguish the lights, now the lights return immediately.

4. Cascade Falls Hike. Cascade Falls is located in E.B. Jeffress Park about 30 miles from Piney Creek in the town of Idlewild, North Carolina. It is a beautiful scenic …Mar 28, 2012 · A year or so ago I replaced my ABS pump with an ebay module allegedly from a low mile Prius. Ever since then the ABS, VSC, and brake system warning light (exclamation point and circle) have been on continuously. Recently, when driving through heavy rain or through standing water the emergency brake light also comes on and I lose front brakes. New (used) Prius owner here and this morning had the amber vsc light come on while driving to work. It rained heavil last night and the roads were wet, but I wasn't spinning the tires or skidding out of control.Some common check engine light codes for the Toyota Prius include: P0A80: Hybrid/EV Battery Pack Deterioration. P0420: Catalyst System Efficiency Below Threshold (Bank 1) P3191: Engine Does Not Start or Engine Runs Rough. P3125: Hybrid Battery Voltage System Isolation Fault.So, I got the dreaded check engine, (!), red triangle, VSC light etc lights up on the dashboard yesterday. If I disconnect the 12V battery for 30 seconds and reconnect, the lights go away and after about 10 mins of …Used a jumper between the CG (#4) and TC (#13) pins in the OBD II port and read the codes. (!) flashed a 66 and 67, ABS flashed a 42, and VSC flashed a 45. In May, checking these codes and following the 8 depressions of the brake pedal in 5 seconds would temporarily extinguish the lights, now the lights return immediately.Jun 30, 2021 · You should check if your inverter pump is working. Open the inverter coolant reservoir and see if the coolant is moving rapidly when your car is "READY". You can also read the codes to determine what the car is reporting. Coolant is moving rapidly when the car is ready and the code I have is the p3000. #4 2007priuslol, Jul 2, 2021. TRAC or VSC Fault - both Slip and VSC lights on At the same time, the DTCs (Diagnostic Trouble Codes) are stored in the memory. The DTCs can be read by connecting SST (09843-18040) between the Tc and CG terminals of the DLC3, and observing the blinking of the ABS warning light and VSC warning light, or by connecting a hand-held tester.A bad accelerator pedal, faulty throttle body, faulty ABS sensors, or a faulty mass airflow sensor are the most typical reasons of a VSC light. The quickest way to determine what set off your VSC light is to use a diagnostic scanner to read the issue code memory.2006 Prius - Red Triangle, VSC and exclamation light on. Hey all, My 06 Prius has 234k miles on it and I bought a refurbished hybrid battery at 207k miles from a company in NJ. I bought this car used at 172k and that was the only major repair it has needed so far. Anyhow, here is what's going on:

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Hello all, Just installed a new clockspring on a 2009 Prius base model because half the buttons on the steering wheel weren't working and the airbag warning light was lit up all the time. I took a guess on the airbag light being caused by the clockspring since the buttons were dead on the steering wheel and the cruise control was usually …What does the Prius’ VSC light signify? What could activate the VSC light? How much does a VSC repair cost? Why did my check engine and traction control lights illuminate? …VSC is short for ‘Vehicle Stability Control,’ which is the stability control system that Toyota uses in their vehicles. When this light is on in your. Toyota Camry. , it generally means that the system is working. However, if the light remains on after you’ve disabled the system, it could be a sign of a computer issue or VSC malfunction.Common Fixes. The most common fix for an ABS light that is on is to repair a wheel speed sensor, followed closely by low brake fluid. A code scanner can help speed the diagnosis along, but there is some anecdotal evidence you can use: Brake warning light on: The brake fluid reservoir may be low.Watch this video to see how to get the most flattering light out of your bathroom light fixture by changing the bulbs or inverting the light fixture. Expert Advice On Improving You...We would like to show you a description here but the site won’t allow us.Vehicle: 2007 Prius. Model: Two. If you disconnect the 12 volt battery the first time you try to start the car it will throw all those code lights. Its just because all the keep alive 12 volt ecu's went off line when you unplugged the battery. They do not log any codes they just launch all those lights.NorCal. Vehicle: 2013 Prius. Model: N/A. So my wive jumped into her 2006 Prius with 160k miles on it today after not driving it for 5 days and the RED triangle !, (!), VCS, and check engine lights came on. I ran basic and ABS code diagnostics on it and the only code that displayed was the P0a80 replace hyrbid battery code and then in the ABS ...Check and make sure your abs relays are pushed all the way in. Located under the hood is the fuse box. I just got the car back from Toyota. It is believed that the dying 12v battery caused the problem. Although I replaced it they had to perform Linear Valve Offset Initialization and then the brakes went back to normal.

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VSC ABS and ! lights plus red (!) for no particular reason temprementally the above lights started appearing upon starting the car (2004 prius). The brakes do not seem to work either while these on. if I drive few meters the lights disappear and the brakes start working properly. After this everything works fine until the next power cycle.3 posts · Joined 2023. #4 · Mar 30, 2023. Brake, ABS,VSC, (!) warning lights. 2014 Prius V with 200000 miles on it changed the brakes and had the mentioned lights come on. Resseted with techstream and a few drive later lights would come on. The brake pedal would bottom out and had to pump it to stop the car.Blinked on the ABS light: 42: note you have codes on the ECB light. Blinked on the VSC light: 43: note you have codes on the ABS light. 45: note you have codes on the ECB light. Blinked on the ECB light— ( (!)) or BRAKE depending on sales region: 36: note you have codes on the ABS light. #13 ChapmanF, Aug 25, 2021.Aug 17, 2023 · Turn on your Prius and make sure the parking brake is engaged. Find the “TRAC Off” and “VSC Off” buttons beneath the dashboard. While the car is in “Park” or “Neutral,” press and hold both buttons simultaneously for 3-5 seconds. Watch for the indicators to light up, indicating successful deactivation. Release the buttons. 2005 Prius. Every time you disconnect the 12V battery, it erases the diagnostic codes stored in the HV ECU, ECM, etc. The fact that you can disconnect the 12V battery and the car restarts without VSC and Brake warning lights means that the problem is likely within the hybrid system, rather than with the brake system.Many Prius drivers have reported the most common cause for a red triangle of death light is an issue with their battery. Typically, the codes that come up after a diagnostic are P0A80 and P3000. The P300 code refers to the Prius’ battery control system. When this code appears, the problem is typically caused by several sources, but it means ...There are times when the anti-lock brake warning light may come on on your car's dashboard when the brakes are in good condition. It may even happen after you have recently had the...Vehicle: 2007 Prius. Model: Two. Today, I started up my car (2007 Prius, 150,000 miles on it) after driving a good while, and (in that order) the ABS VSC and (!) lights came on. I have not noticed any difference in how the car drives, just a bit less MPG's, and the brake pedal is slightly more stiff. I have put it into diagnostic mode and it ...The M-24 Chaffee Light Tank retained the speed and agility of the M-3 Stuart while adding needed firepower. Climb into the hatch of the M-24 Chaffee. Advertisement The M-24 Chaffee...Vehicle: 2008 Prius. Model: N/A. Edit: The check engine light is from a bad oxygen sensor. I have the part ordered, but am waiting on shipping. Also when the car was let sit for 2 hours the brake and vsc light were off when restarted, but the red master warning light stayed on. After about 15 min of driving the brakes and vsc lights came back on.Aug 20, 2022 · California. Vehicle: 2009 Prius. Model: Four Touring. The lights for brake, ABS, (!) and VSC light. I've check my 12V bolt (charged at 12V), I've topped all my fluids and I tried using a paperclip in my OBD2 port (top 5th from the right and bottom 4th from the right) + pushing brake 8 times and I cannot seem to clear the warning lights. ….

When the “VSC light” or “check VSC system” message appears on the dashboard, there’s a traction-related problem present in the vehicle. Anytime the light is illuminated, there’s also an issue with either the VSC or the ABS system. Your vehicle stability control (VSC) system is most likely operating properly if your Toyota VSC light ...Triangle Light on, brake system light, vsc light, car won't start. Discussion in 'Gen 2 Prius Main Forum' started by Fedejunin, Jun 27, 2017. Tags: brake system warning light; car won't move; ... You can also read the Prius ABS codes with a short length of wire by counting light blinks; this can be handy if the warning lights come on when you ...Almost home when 4 warning lights (Brake, (!), ABS, VSC) came on Friday after driving about 45 minutes from work (around 13-15 miles). 2006 Prius with 133K miles. Brakes working. Found this forum and took car to garage next day. 12 volt battery replaced (garage owner said it was a Toyota brand, could have been the original).2005 Prius VSC light and (!) on. Discussion in 'Newbie Forum' started by MichaelH1313, Dec 28, 2020. MichaelH1313 New Member. Joined: Dec 28, 2020 2 0 0 Location: Indiana Vehicle: 2005 Prius Model: Four. I’m new to Prius and had our 05 Prius for 8 months with 170k miles. Vsc light and (!) came on before.You should check if your inverter pump is working. Open the inverter coolant reservoir and see if the coolant is moving rapidly when your car is "READY". You can also read the codes to determine what the car is reporting. Coolant is moving rapidly when the car is ready and the code I have is the p3000. #4 2007priuslol, Jul 2, 2021.The M-24 Chaffee Light Tank retained the speed and agility of the M-3 Stuart while adding needed firepower. Climb into the hatch of the M-24 Chaffee. Advertisement The M-24 Chaffee...Blinked on the ABS light: 42: note you have codes on the ECB light. Blinked on the VSC light: 43: note you have codes on the ABS light. 45: note you have codes on the ECB light. Blinked on the ECB light— ( (!)) or BRAKE depending on sales region: 36: note you have codes on the ABS light. #13 ChapmanF, Aug 25, 2021.Some common check engine light codes for the Toyota Prius include: P0A80: Hybrid/EV Battery Pack Deterioration. P0420: Catalyst System Efficiency Below Threshold (Bank 1) P3191: Engine Does Not Start or Engine Runs Rough. P3125: Hybrid Battery Voltage System Isolation Fault. Prius vsc light, The Prius is a conservative vehicle based on the suspension design, tuning, and tires. If you change the vehicle characteristics, such as tires, you can get into VSC when you may not necessarily think you need it. This is a continuing issue with chassis controls, be they ABS, TCS, or now VSC., Jun 8, 2007 · Let's focus on the blink codes from the (!) light, as the blink codes from the ABS and VSC lights appear to be undocumented. 11 means "open circuit in main relay 1" and the suspect areas include the ABS #1 relay, the skid control ECU, or the associated wiring harness. 43 means "capacitor malfunction" and the suspect areas include the brake control power supply, ABS #1 fuse, ABS #2 fuse, ABS #3 ... , So, I got the dreaded check engine, (!), red triangle, VSC light etc lights up on the dashboard yesterday. If I disconnect the 12V battery for 30 seconds and reconnect, the lights go away and after about 10 mins of …, Dec 16, 2019 ... As the title suggests, this is how to clear Lexus/Toyota VSC and VSC OFF warning lights, on a Mk 2 Lexus GS at least., The first step in diagnosing VSC light issues is to perform a visual inspection of the vehicle. Start by examining the exterior of the vehicle for any visible signs of damage or loose connections. Inspect the wheel speed sensors, steering angle sensor, and yaw rate sensor for any physical damage or debris accumulation., Tire pressure light was on and was told by seller it was a faulty TPMS. Drove it on the highway a few days later and when I had driven around 60mph for a period the ABS, VSC and ! came on. Once off the highway and doing around 45mph it went off. Since the Prius had three makes of tires I decided to get them Changed as well as the “faulty” TPMS., May 5, 2024 - Entire home for $125. Our late 1800's farmhouse is located just 0.8 miles from New River State Park Kings Creek Access. Bring your kayaks, canoes, and tubes, or …, The C1201 code is the one that tells the vehicle to turn on the check engine light and disable the traction and VSC. Basically, when the other two codes pop up, this one is in charge of letting you know there’s a problem. Fixing the other codes should also fix this one since they’re the ones that caused it., 2007 Prius. Model: Two. Have change my abs pump unit, according to the dealer that was the problem. Once chance the car has the same exact issues, when I slam on the brakes to see if the antilock brake system is working properly the front wheels lock. The lights on the dashboard abs vsc brake and (!) are on, I try to reset them using the …, Prius lights VSC and orange brake light coming on . Hi everyone, not sure if this is the right place to post but I have been having trouble with my beloved 2009 Toyota Prius 2 Gen for the last 6 months. ... a yellow/orange brake indicator light as well as a yellow/orange VSC light coming on. After switching the car off and on again, the yellow ..., The M-24 Chaffee Light Tank retained the speed and agility of the M-3 Stuart while adding needed firepower. Climb into the hatch of the M-24 Chaffee. Advertisement The M-24 Chaffee..., Warning lights. On a Prius, when the check engine light comes on it indicates a malfunction in the powertrain control system. You need to have the car scanned for codes to see where the fault lies. The red triangle lights because the check engine light is on. The VSC is disabled when the check engine light is on and that light comes on., The first step in diagnosing VSC light issues is to perform a visual inspection of the vehicle. Start by examining the exterior of the vehicle for any visible signs of damage or loose connections. Inspect the wheel speed sensors, steering angle sensor, and yaw rate sensor for any physical damage or debris accumulation., C1310 is logged by the Skid Control ECU when the HV ECU has logged some problem with traction control. When this, or C1259, is logged, Enhanced VSC operation is prohibited. The service manual says to diagnose it by getting codes from the HV ECU. You should take it to a Toyota dealer, as they should have the correct equipment to read those codes ..., > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > Attachments are working again! Check out this thread for more details and to report any other bugs. ... Thank you! I should mention that the VSC light never has come back on; just the initial time. When I restarted the car, it went out …, 2005 Prius ABS, VSC, and ( (!)) lights on and not sure what to do. Here is a link to images. Got these warnings on the car yesterday. Power brakes don't seem to work and steer seems a little bit looser. I've had the Inverter Coolant Pump changed (from recall), might that be related somehow?, 2008 Prius. Model: N/A. Hi all, I have a 2008 Toyota Prius. I was coming home yesterday and right as I turned into my apartment the VSC light came on along with the big red triangle. I drove slowly and parked. When I tried to turn on the car today it turned on, windows go up and down, overhead light turns on, and all these lights (see subject ..., TRAC or VSC Fault - both Slip and VSC lights on At the same time, the DTCs (Diagnostic Trouble Codes) are stored in the memory. The DTCs can be read by connecting SST (09843-18040) between the Tc and CG terminals of the DLC3, and observing the blinking of the ABS warning light and VSC warning light, or by connecting a hand-held …, I slammed a curb and broke both driver side rims/tires and bent the front strut. After replacing all of that the VSC,ABS,TPMS lights all on. Also the cruise control stopped working and when I brake, the regenerative braking system only moves up 1 or 2 bars...not the full line like before. The front wheel sensor wiring was also frayed thru so I ..., 2005 Prius ABS, VSC, and ( (!)) lights on and not sure what to do. Here is a link to images. Got these warnings on the car yesterday. Power brakes don't seem to work and steer seems a little bit looser. I've had the Inverter Coolant Pump changed (from recall), might that be related somehow?, US Lighting Group News: This is the News-site for the company US Lighting Group on Markets Insider Indices Commodities Currencies Stocks, The M-24 Chaffee Light Tank retained the speed and agility of the M-3 Stuart while adding needed firepower. Climb into the hatch of the M-24 Chaffee. Advertisement The M-24 Chaffee..., Hello all, Just installed a new clockspring on a 2009 Prius base model because half the buttons on the steering wheel weren't working and the airbag warning light was lit up all the time. I took a guess on the airbag light being caused by the clockspring since the buttons were dead on the steering wheel and the cruise control was usually …, 2007 Prius. Model: II. Go to parts store (O'Reilleys, Autozone, etc.) and borrow their scanner. Plug it into the port underneath the steering column on right side. Enter vehicle information and read the ABS codes. It will tell you what the problem is. When I had exact same codes it was a rear right speed sensor., 2008 Prius. Model: II. A hybrid battery failure usually has more lights than the triangle and check engine light. I would suspect maybe you just have a less expensive problem on your hands (like a inverter pump failure). To easily check that, open the cap to the inverter pump reservoir (the pink fluid that's slightly to the right center when ..., DTC C1310/VSC light on!!!! Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by nickerin79, Jun 9, 2009. nickerin79 New Member. Joined: Nov 21, 2008 6 0 0 Location: San …, Jan 31, 2021 · In the brake section, there are separate tables for codes from ABS, VSC, and ECB (the (!) light). Some of the blink codes can overlap, so you have to make sure you have found the code in the right table for the light that blinked it. You should re-check the code you wrote as '5' ... the blink codes are all two digits. , 2009 with the following light on: ((!)) + ABS + VSC Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by jziegler , Feb 26, 2020 . jziegler New Member, Just get it this way: Blink (a/k/a Flash) Codes – How to. | PriusChat. Sadly, that way doesn't work for the trouble codes behind the triangle light. And it's possible the only VSC code will be 51 (which only means "go pay attention to the codes behind the triangle light"), but even then you'll know more than you did., Common Fixes. The most common fix for an ABS light that is on is to repair a wheel speed sensor, followed closely by low brake fluid. A code scanner can help speed the diagnosis along, but there is some anecdotal evidence you can use: Brake warning light on: The brake fluid reservoir may be low., Apr 30, 2024 - Entire home for $284. Country Elegance, May 27, 2023 ... How to find out why a Toyota Trac Off, Check Engine light, and VSC light is on at the same time. Amazon Link Low Cost OBDII Scan Tool: ..., Common Fixes. The most common fix for an ABS light that is on is to repair a wheel speed sensor, followed closely by low brake fluid. A code scanner can help speed the diagnosis along, but there is some anecdotal evidence you can use: Brake warning light on: The brake fluid reservoir may be low.