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Why is my 4lo light flashing tundra of Technology

2011 Tundra SR5 4x4 Started on Sunday am and had ABS, V.

Metra 70-1761 Radio Wiring Harness For Toyota 87-Up Power 4 Speaker. $5.29. 5Pcs 12V Waterproof Push-Button On-Off Switch, Carbhub 12V Waterproof Push-Button On-Off Switch with 4" Leads For Motorcycle/Auto Car. $9.99. Alpine iLX-W650 Digital Multimedia Receiver with CarPlay and Android Auto Compatibility. $299.95.Since my last comments, car has had 3 more episodes (in less than 100 miles) of dash lights flashing and no 5th gear - either just the 4 Lo flashes or the 4-Lo flashes plus skid, and check engine light all activated. Turning off engine didn't help. Anyway, yesterday, within 1/2 mile of starting car, had above 3 warning lights come on.Following the alternator repair, my check engine light and 4LO came up out of nowhere. Took it to the dealership to check it out and do a brake job, and then they said my catalytic converters are due for replacing but held off. Got my truck back and the check engine and 4LO were no longer illuminated but the traction control still was.Currently summer here in Maine. My problem is!! My shifter has become “sticky” feeling throughout all gears, also 4LO is flashing, but doesn’t seem to be in any of the 4wd modes. Both started at the same time. Shifter normally is smooth as butter. Happened once a year ago, shifted through the 4wd gears, and the light went out.2007 tundra with 5.7v8 lack of acceleration "vsc off" light flashing traction control light on check engine light on. The key of your problem is to know what is the check engine light, there is several codes that send the computer to safe mode diminishing engine output, vsc. If you need further help, I’m available over the phone at https ...Left work and as soon as I turned the truck on these lights were on and the 4LO light was blinking the entire time I drove. I tried turning it off and messing with the 4LO dial/traction control buttons and none of that did anything. The truck drove completely normal except for these lights. The 4LO light blinks the entire time i've driving.Could also be loose or dirty battery connections. Inspect connections. If they have no more adjustment left I would replace them. Also check your negative battery connections on the frame and motor. A loose or dirty frame or motor ground can cause all sorts of weird issues. Troubleshooting and repair of a Second Generation Toyota Sequoia/Tundra with a flashing 4-Hi /4-Lo & Center Differential light error code. *Sorry for the ter...REO Tundra said: Ok, I verified which lights were on and which were blinking. 4hi and 4lo were blinking quickly. VSC was blinking, but slower (I don't think speed matters, but #whatthehey). Traction Control and ABS lights are on solid. According to the Flashy Light Legend (see below), it's the rear speed sensors.1 2 Next mendonsy 5484 posts · Joined 2007 #2 · Apr 22, 2012 (Edited by Moderator) Could be. Maybe this will help? http://www.tundrasolutions.com/forums/tundra/207051-flashing-dash-lights-explained-maybe-not/?highlight=flashing '19 SR5 DC 4x4, 5.7, TRD Toyota SS steps ARE MX cap Toyota bed step Weathertech Vent Visors Ultragauge EM TechstreamEven after reconnecting the MAF the truck only cranks but never runs, with 4lo flashing but no check engine light. Things I have done: -Checked all fuses, even swapped fuel pump & fog lamp fuses. -Tried both keys plus valet key (immobilizer light extinguished once key is in ignition)Check engine light vsc light 4 lo flashing 2 Answers. I have a 2007 toyota tundra 5.7 sr5. Vsc light check engine light 4lo light came on. No back up lights no cruise control and my pnrd lights on my dash are not working. Scanned ecm and the code sai...A small electric motor inside the front differential engages a splined collar that links everything up inside the front differential. Inside this failed A.D.D. unit the final switch that indicated a complete engagement had failed. The 4WD module, not knowing if the A.D.D. was done working, kept waiting for a switch signal that would never come.vlog_052 HOW TO REPAIR CHECK ENGINE LIGHTS ON WITH 4LO LIGHT BLINKING | TOYOTA LAND CRUISER | ALEX VILLOSTASHello guys, bagong kaalaman na naman po ang aki...1) A faulty traction switch. The traction switch on Toyota Tundra is located right behind the wheel. The button has a car and two wavy lines drawn on it. When the switch is faulty, it can lead to the TRAC OFF icon appearing on the dash. The check engine light on the other hand is not something to be overly worried about.07 Toyota Tundra died while at a stop light and won’t start now it’s flashing 4 low 5 Answers. I can’t understand why our 2007 Toyota Tundra was running just fine we pulled up to a stop light and it died . It acts like it wants to start but don’t . And the only light that is flashing is 4 Lo...The 4WD light serves as a visual cue that 4WD mode has been activated by selecting 4H. When the light flashes continuously for longer than 30 seconds, your drivetrain system is having a difficulty and 4WD is not correctly engaged. The 44 light will start to emit a solid color, commonly orange or green, when the 4WD mode has been successfully ...REO Tundra said: Ok, I verified which lights were on and which were blinking. 4hi and 4lo were blinking quickly. VSC was blinking, but slower (I don't think speed matters, but #whatthehey). Traction Control and ABS lights are on solid. According to the Flashy Light Legend (see below), it's the rear speed sensors.Feb 23, 2022 · 3. Gender: Female. 2015 White 4Runner SR5. I have had this issue twice now. The 4LO will start blinking first, then the TRAC OFF and Check Engine light will eventually come on. If the car is in drive, the "D" will not show up in the dash. The car will also feel like its taking more gas/power to accelerate and slows down faster when coasting. If it's still flashing, move back to 4hi, drive forward a bit, then stop, put it in neutral, move to 2hi. Drive a little. Then if you still want to be in 4 wheel low, try moving back down to 4hi and then 4lo, moving a little between each change. PS you might have turned the 4 wheel drive knob by accident. Amazon product link:https://amzn.to/3pHz6PxWhat does it mean when TRAC off and check engine light and VSC lights are on in a Toyota? My vehicle is a Gen 2 -...1. start your truck. 2. put it in neutral and make sure your not moving. 3. switch to 4 lo. 4. put in drive and go 10 ft or so until the light stops flashing and 4 lo lights solid. 5. once it does then stop the truck.HELP!! 4Lo/4Hi Blinking. Discussion in ' 2.5 Gen Tundras (2014-2021) ' started by Stoontown, Feb 16, 2022 . I have a 2015 1794 Edition that has gave me little issues until today. I got in the vehicle and my dashboard is going crazy. 4lo/4hi blinking, BSM not working, traction control light on and ABS light on.Apr 13, 2008 · 2uprup · #12 · Dec 19, 2008. You usually need to be going about 5 miles an hour before you hit the 4HI button. Once it engages, the light will stop blinking. Then you can stop put the truck in neutral and then puch the 4LO button. The truck will not go into 4LO without first being in 4HI. Plant cells perform the light and dark reactions of photosynthesis, including the synthesis of the sugar, glucose, in as little as 30 seconds. Even more amazingly, spinach leaves exposed to a flash of light can form stable 3-carbon precurso...May 20, 2011 · Pull the actuator off of the back of the t case. You'l see a rod that comes out of the back of the t case that looks like this. Pull it out until you hear it click once and that is 4wd. Pull it out further until you hear the second click and that is 4lo. Extremely interesting post and bazaar timing here's why. Tomorrow I have my first 6 month/5,000 visit appointment and a week ago while away for the weekend I was fooling around with the 4WD and my low was also flashing a light on my dash. I've been meaning to pull out the manuals. I'll definitely need to tonight in preparation for tomorrow.Dec 17, 2016. #1. Went to go to work and for some reason my 07 tundra limited automatic transmission 5.7 was in 4 wheel low. I havent used the 4wd in over a year. Started it up this morning and 4lo light is flashing, traction control is flashing, engine light lit, and wheels slipping light lit. Truck is in 4wd and had to really drive slow to ...07 Toyota Tundra died while at a stop light and won’t start now it’s flashing 4 low 5 Answers. I can’t understand why our 2007 Toyota Tundra was running just fine we pulled up to a stop light and it died . It acts like it wants to start but don’t . And the only light that is flashing is 4 Lo...A failed transfer case shift motor could trigger the 4LO light to start flashing, potentially due to a damaged wiring harness or a blown fuse. The transfer case shift control module controls the transfer case shift motor, and its failure could result in the same flashing 4LO light. Wiring harness damage or a blown fuse could also be the culprit.A failed transfer case shift motor could trigger the 4LO light to start flashing, potentially due to a damaged wiring harness or a blown fuse. The transfer case shift control module controls the transfer case shift motor, and its failure could result in the same flashing 4LO light. Wiring harness damage or a blown fuse could also be the culprit.4Lo is a four-wheel-drive car setting that lets you use your car’s torque when you need it the most. For example, you can use this setting whenever you are stuck while climbing up a steep hill or on rough terrain like a snowy road. In 4Lo, the differential will send most of the power to the front wheels. This will allow you to climb a steep ...4lo flashing ,vso flashing ,check engine light on all came on at the same time. First you need to take your vehicle to Advanced Auto Parts, O'Reilly, etc. (Toyota may charge you if it comes up with something else) Have them read the code. If the code comes up with an Air Injection Pump code Toyota will repair it for free if your truck has less ...07 Toyota Tundra died while at a stop light and won’t start now it’s flashing 4 low 5 Answers. I can’t understand why our 2007 Toyota Tundra was running just fine we pulled up to a stop light and it died . It acts like it wants to start but don’t . And the only light that is flashing is 4 Lo...Jun 2, 2021 · 2012 Tundra will not start. Discussion in ' 2nd Gen Tundras (2007-2013) ' started by hall69882, Jun 2, 2021 . Truck will not start 4lo light is blinking and traction control light stays on when key is on. Have checked fuses all were good. To complicate it, these lights come on together at the same time but a lot less frequently: 4Lo (flashing) and Check Engine (solid). If the first set of lights have come on 50 times in the last two months, the 4Lo and Check Engine have only come on 5 times total.2012 Toyota Sequoia, DTC P2442, 4LO light is blinking, TRAC OFF light is ON. There is a TSB for P2442. As per the TSB, ECM/PCM needs to be recalibrated. My question is, "Is the blinking 4LO light, and … read more1 2 Next mendonsy 5484 posts · Joined 2007 #2 · Apr 22, 2012 (Edited by Moderator) Could be. Maybe this will help? http://www.tundrasolutions.com/forums/tundra/207051-flashing-dash-lights-explained-maybe-not/?highlight=flashing '19 SR5 DC 4x4, 5.7, TRD Toyota SS steps ARE MX cap Toyota bed step Weathertech Vent Visors Ultragauge EM TechstreamYesterday, I got in the truck and the following lights are lit up: 1) check engine. 2) the VSC light is on (pushing the button does nothing) 3) 4LO is blinking. Based on what I've read, I did the following: 1) checked all of the wiring at each wheel sensor. I also disconnected and reconnected the wire at the (forgive my ignorance as I don't ...REO Tundra said: Ok, I verified which lights were on and which were blinking. 4hi and 4lo were blinking quickly. VSC was blinking, but slower (I don't think speed matters, but #whatthehey). Traction Control and ABS lights are on solid. According to the Flashy Light Legend (see below), it's the rear speed sensors.Apr 15, 2018 · Extremely interesting post and bazaar timing here's why. Tomorrow I have my first 6 month/5,000 visit appointment and a week ago while away for the weekend I was fooling around with the 4WD and my low was also flashing a light on my dash. I've been meaning to pull out the manuals. I'll definitely need to tonight in preparation for tomorrow. The flashing check engine light means a misfire has been detected. The traction control light on can be a faulty reading wheel speed sensor. The vehicle stuck in low is going to be a shift actuator faulty, faulty position switch, ECU failure.Step 2 – Check your actuator. The actuator is what signals the light to turn on or off. A faulty actuator not only signals your 4WD system to engage and disengage, it also serves to turn the 4WD light on and off. To test your actuator and see if it is the cause of the problem, use an ohmmeter to test resistance.Could also be loose or dirty battery connections. Inspect connections. If they have no more adjustment left I would replace them. Also check your negative battery connections on the frame and motor. A loose or dirty frame or motor ground can cause all sorts of weird issues. 4lo 4hi flashing, ABS, BRAKE solid, traction light solid, and collision warning light flashing on my 2019 Tundra TRD Pro. ... 25 satisfied customers. I replaced all 4 shocks on a 2014 Tundra and now the 4hi-4lo. I replaced all 4 shocks on a 2014 Tundra and now the 4hi-4lo light is blinking and the ABS & traction Control lights are on.Even after reconnecting the MAF the truck only cranks but never runs, with 4lo flashing but no check engine light. Things I have done: -Checked all fuses, even swapped fuel pump & fog lamp fuses. -Tried both keys plus valet key (immobilizer light extinguished once key is in ignition)3. Gender: Female. 2015 White 4Runner SR5. I have had this issue twice now. The 4LO will start blinking first, then the TRAC OFF and Check Engine light will eventually come on. If the car is in drive, the "D" will not show up in the dash. The car will also feel like its taking more gas/power to accelerate and slows down faster when coasting.#1 · Dec 9, 2010 2007 5.7 double cab 57,000 miles blinking 4 lo and vsc off lights, check engine and anti skid lights on also. I just did get a wheel alignment a few days ago. I also just had a plow installed. I read that a zero point calibration may be needed after wheel alignment?Apr 3, 2014 · QAA is Compatible with 2016-2020 Toyota Tacoma 6 Piece Stainless Body Molding Insert Trim Kit, 1.5" Width MI16172. $150.49. CPW LED Tail Light Compatible With 2005-2015 Toyota Tacoma Pickup Sequential Turn Signal Light Rear Brake Lamp Driver and Passenger Side Tail Light Replacement Assembly Smoke Lens. Left work and as soon as I turned the truck Robertk323. 1,335 satisfied customers. TurnAfter I left church, I returned to my vehicle and the 4Lo an

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Left work and as soon as I turned the truck on these ligh.

Robertk323. 1,335 satisfied customers. Turned on 4lo not in neutral now 4lo flashing light as well. turned on 4lo not in neutral now 4lo flashing light as well as check engine light and traction control light. code for check …A failed transfer case shift motor could trigger the 4LO light to start flashing, potentially due to a damaged wiring harness or a blown fuse. The transfer case shift control module controls the transfer case shift motor, and its failure could result in the same flashing 4LO light. Wiring harness damage or a blown fuse could also be the culprit.1. Wheel Speed Sensor. A typical wheel speed sensor. A bad wheel speed sensor is the most common reason the ABS light comes on. There is a wheel speed sensor on each of your Toyota Tundra’s hubs. Wheel speed sensors monitor the rotational speed of each wheel and send it back to the ABS module. If one of the wheels is moving slower than the ...Jul 11, 2006 · 1547 posts · Joined 2006. #18 · Mar 26, 2009. Well I have the "4 Lo and 4wd" lights flashing problem. I had it in 4wd and then switched to 2wd. As soon as I switched it over to 2wd, both of those lights started flashing and have been ever since. Truck is going into the dealership to get it looked at on friday. DS18 PRO-ST 1.9" Replacement Upgrade Bullet Compression Tweeters with Crossovers- Car OEM Tweeter Upgrade Kit for Many Subaru/Toyota Models - Replacement for H631SFJ101 and H631SFJ100 (Pair) $79.95. TOYOTA Genuine 2019 & Newer Tacoma Short Wheelbase Tailgate Lock (PK3B6-35JS0) $159.44.Apr 1, 2017 · NEED HELP: Check engine light on, slip indicator light on, and 4Lo flashing. My Tundra is a 2011 Crewmax 4x4 with just under 139,000 miles. I don't do any towing or offroading. Mostly stays on the asphalt and the occasional trip to the beach. So about 3 days ago, my check engine light came on and I took it to Autozone to check the code. SOURCE: 4wd 4HI and 4LO not working. Check the fuse to the 4x4, if the fuse is good then check the 4x4 electric motor actuator on the transfer case. You should hear it work from 2wd, 4hi to 4low and back to 2wd with the push of the switch. if you don't hear it working then check the wire harness at the actuator motor, look for any damages …Your VSC light staying on means that the Toyota Tundra’s VSC system has been deactivated. It is not as safe to drive without it on, but it should still drive fine. Good luck determining what is causing the problem. Remember, a good code scanner can save a ton of time. The VSC (Vehicle Stability Control) system is a traction/stability control ...If the indicator light is not on, it means that the 4 low transfer case is not engaged. If your Tacoma is beeping in 4 low, you can try the following quick fixes: Make sure that the 4 low transfer case switch is fully engaged. Push the switch all the way into the 4 low position. Try engaging 4 low while the truck is at a complete stop.T. Tundra706 Discussion starter. 1 post · Joined 2011. #1 · Dec 13, 2011. I have a 2008 Toyota Tundra double cab 5.7L . I have nothing but great luck with the truck and put about 70k a year on it. I now have 220k on the the truck. Anyhow, other day while driving on dry roads in a straight line at 20 mph, my VSC OFF light and 4lo light began ...Sep 14, 2021 · My 4lo light is flashing on my 2006 Toyota Sequoia and my my 4lo light is flashing on my 2006 Toyota Sequoia and my vehicle will not go into***** disconnecting the battery in the past has helped but it is not heling now. the problem is very intermittant. whe … Occasionally when I start the vehicle, the 4lo light is flashing accompanied by a beeping alert, the transmission releases into a neutral position and the shift selector becomes essentially useless (you can toggle from Park through each setting including drive and the transmission will not engage).Apr 13, 2008 · 2uprup · #12 · Dec 19, 2008. You usually need to be going about 5 miles an hour before you hit the 4HI button. Once it engages, the light will stop blinking. Then you can stop put the truck in neutral and then puch the 4LO button. The truck will not go into 4LO without first being in 4HI. Asked by 07ToyTun19 Jan 06, 2019 at 07:14 AM about the 2007 Toyota Tundra Limited 5.7L Crew Max 4WD. Question type: Maintenance & Repair. 2 seperate times 2 weeks apart i was driving and. the check engine light started flashing and the. truck started vibrating throughout the cab. Gauges. all looked normal.# 1 Stoontown [OP] New Member Joined: Feb 16, 2022 Member: #74694 Messages: 5 Gender: Male I have a 2015 1794 Edition that has gave me little issues until today. I got in the vehicle and my dashboard is going crazy. 4lo/4hi blinking, BSM not working, traction control light on and ABS light on.Tom says: December 4, 2009 at 7:52 pm. I brought 2010 Tundra on November 17. The check engine light came on with 362 miles on December 1st. The dealship said it code p0022. The changed the oil and the filter. Then the light came on again on December 4th with 462 milages. They cleaned the DTC.Why Is My Toyota Tundra 4LO / 4HI Light Flashing? The following are the most common reasons why the 4LO / 4HI light on a Toyota Tundra is flashing: Damaged Actuator. The actuator is the component that enables the user to engage the four-wheel drive system.Aug 9, 2017 · Oct 25, 2020. #31. Lewis said: If you run across a 2008 Toyota Tundra (3UR-FE) and have a no start, no ECM communication condition and there is no "Check Engine Light" bulb illuminated during the function check, disconnect the secondary air valves.These have a tendency to short the 5 volt reference line and stop all ECM communication. 2005 sequoia limited 4LO flashing. I drove my sequoia to a buddy's place without any hiccup. Parked, hang out than when I hop in the sequoia and started it to come back home the 4LO was flashing. There is no other …1) A faulty traction switch. The traction switch on Toyota Tundra is located right behind the wheel. The button has a car and two wavy lines drawn on it. When the switch is faulty, it can lead to the TRAC OFF icon appearing on the dash. The check engine light on the other hand is not something to be overly worried about.Apr 22, 2012 · I experience the same problem since end Oct 2013 - service engine, Trac Off and 4 Low Blinking. When the warning lights are on the vehicle does not switch between H4 and L4. Summer temperatures, above 25 degrees C South African conditions. Dealer replaced egr valve and ECU, problem still recurs at random. 2012 Toyota Sequoia, DTC P2442, 4LO light is blinking, TRAC OFF light is ON. There is a TSB for P2442. As per the TSB, ECM/PCM needs to be recalibrated. My question is, "Is the blinking 4LO light, and … read moreNov 6, 2010 · MICHTundra said: Same thing happening here. 4HI/4LO lights flashing, Traction Control light is on (indicating traction control is off) and ABS light is on. Won't shift into 4wd, traction control is clearly not working and neither is the ABS system. All lights came on at the same time. 2011 Tundra 5.7L. Reply. I should clarify; that 4LO button is non-functional aOnce you are pulled over, you can run th

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Jan 13, 2013 · Does not turn off and still running. Dash has blinking 4LO, check engine light is on, vsc light on and wont go but 5mph. Towed it to toyota, and they plugged in and said it had something to do with the throttle body. Drove about 7000 miles, then at another stop light it does the same thing. Since then, it has not stopped flashing no matter the position of the switch. I have done all the "tricks" to get it to engage or disengage, drive straight, neutral with and without brake on, tight turns on soft material, tight turns on hard material, broad sweeping turns, etc, in all positions of the know, with no changes.Oct 25, 2020. #31. Lewis said: If you run across a 2008 Toyota Tundra (3UR-FE) and have a no start, no ECM communication condition and there is no "Check Engine Light" bulb illuminated during the function check, disconnect the secondary air valves.These have a tendency to short the 5 volt reference line and stop all ECM communication.To clear codes, turn ignition off and remove wire from connector. Turn key back on, then off. Re insert wire and turn key back on. Immediately press brake pedal 8 or more times within 5 seconds. All the lights should b begin to flash a steady …That code is the secondary air injection valve stuck open bank 1. 2008 Toyota Tundra engine light on, vsc off, 4lo, slip indicator lights came on - what is the problem? I currently have the same issue on my 2008 Tundra. I have noticed that one of the 12v acces plugs don't work. The problem is intermittent and started when the air was damp or ...After a shift to AUTO, 4WD, 2HI, 4HI, or 4LO is made, the transfer case shift control module will flash that indicator lamp until the transfer case shift control module receives a high voltage signal on CKT 1695 from the front axle switch. A solid state circuit located inside the switch supplies ignition voltage to the lamps.I just bought my second tundra 10 days ago, and when I turned the key this morning my dashboard lit up like a Christmas Tree. I got the VSC OFF light flashing in conjunction with the traction control light (the car symbol with the tracks behind it), the check engine light, and a flashing 4 lo light.Jul 16, 2021 · Currently summer here in Maine. My problem is!! My shifter has become “sticky” feeling throughout all gears, also 4LO is flashing, but doesn’t seem to be in any of the 4wd modes. Both started at the same time. Shifter normally is smooth as butter. Happened once a year ago, shifted through the 4wd gears, and the light went out. The diagnostic scan indicates 3 items related to the Check Engine and 4WD blinking. P2240 and P2241 are faults with the O2 sensors and these results in the Check Engine Light coming on. These are usually due to faulty …The amount needed to repair a Toyota Tundra with a blinking air conditioning light may vary depending on the reasons why the light is flashing. So, a good diagnosis will be necessary. The majority of repair companies will charge the time spent in labor diagnosing your car's issue. This will normally cost somewhere between $75 and …1547 posts · Joined 2006. #18 · Mar 26, 2009. Well I have the "4 Lo and 4wd" lights flashing problem. I had it in 4wd and then switched to 2wd. As soon as I switched it over to 2wd, both of those lights started flashing and have been ever since. Truck is going into the dealership to get it looked at on friday.The most common reason for your TRAC light to come on is a temporary loss of traction. Whether you’re driving in heavy rain, snow, or even on loose gravel, your TRAC light is meant to come on to indicate your Tundra’s TRAC system is functioning properly. As your TRAC system engages and disengages, you will likely see the TRAC light flashing ...Noticed as I backed up a little the 4HI flashing went away, may have been because I trying switching in 4WD the night before. So back to the original CEL with VSC and 4LO flashing. Dealer just called and confirmed they were changing the AIP's. They didn't need to claim on my Platinum warranty, told me it was covered under warranty …The transfer case is what splits the power between the front and rear axles. If it overheats, it may no longer be able to operate according to spec, causing the 4WD light to flash. Sometimes, the flashing light signifies that the system itself has deactivated until it can cool down. It’s a good idea to check your owner’s manual to find out ...Apr 10, 2011 · Tinesta · #14 · Feb 2, 2013. I have a 2012 Tundra Rock Warrior that was stuck in 4wheel low with check engine lite and traction control lite on when I started it up yesterday morning, The dealer found code P2440, and REFLASHED THE COMPUTER to fix the problem. Im concerned because I see that this is an ongoing problem since at least 2007. Aug 6, 2018 · It happens as soon as the truck is cranked. It’s acting like it’s in 4lo and then I switch the gear to neutral and move the switch to 4lo then 4hi then 2wd! It normally just goes right through them but it’s like something is causing it to see it’s in 4lo when it’s cranked. 1) A faulty traction switch. The traction switch on Toyota Tundra is located right behind the wheel. The button has a car and two wavy lines drawn on it. When the switch is faulty, it can lead to the TRAC OFF icon appearing on the dash. The check engine light on the other hand is not something to be overly worried about.Jan 31, 2011 · While that does not appear to be true, the light patterns do seem to be consistent when a failure occurs so they have some value. If you have a problem that results in these light patterns please post a link to the thread discussing the problem here. 1) Insure that you list exactly what lights were displayed. 2013 Crewmax Rock Warrior - 450 miles. Just heading out to our farm to play with Tundra a bit. Made it half way there (I-80 West) and noticed 4 LO flashing and TRAC OFF/CHECK ENGINE light on. Headed over to Toyota dealer that truck was purchased from - they reviewed codes and said it was showing a "lean" code. Asked me if I put E85 in it (nope). Yesterday, I got in the truck and the following lights are