Question about 2007 Toyota Tundra

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I have a 2007 Toyota Tundra and the 4wd does not work, when I turn the button lights 2h to 4h to 4l light and makes a beep and the light pulses

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  • sorry, q sensor could be? And if that is the only way to see which sensor is only with the computer? will explain step by step, every time I turn the engine lights 4H and 4L are pounding and when I turn the button of 2H to 4H begins to sound an alarm 4L and the light begins to throb, my mechanic is an revised and not an found nothing wrong and my other question is whether there is any procedure to enable or repair the 4WD because my vehicle is repaired by an accident, you agradesco much for your time.

  • " thank you very much sir, this OBDII only Toyota has agency? my computer is a SNAP-ON MODIS 8.2, but I diagnotica no bad sensor on my 4WD, it only appears airbags, air sensor in the tires, if neither diagnosed tranfer (4WD), you had no this happened before? and if so q was or what happened to this, is to get an idea of the problem and I'm from HONDURAS and not easy access to a good computer or the agency since that does not get vehicles from other countries like the tundra 2007, again thank you very much for your understanding and time. "

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Computer test get codes to repair, possible sensor bad

Posted on Feb 04, 2010

Testimonial: "thank you very much sir, this OBDII only Toyota has agency? my computer is a SNAP-ON MODIS 8.2, but I diagnotica no bad sensor on my 4WD, it only appears airbags, air sensor in the tires, if neither diagnosed tranfer (4WD), you had no this happened before? and if so q was or what happened to this, is to get an idea of the problem and I'm from HONDURAS and not easy access to a good computer or the agency since that does not get vehicles from other countries like the tundra 2007, again thank you very much for your understanding and time."

  • tim mcgrath Feb 06, 2010

    Yes sir you can plug into computer system with an OBDII Tester and retrieve the codes so can lead to to right place to repair without guessing and wasting money on non-needed parts replacement

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just found this worked a trick..mine stuck for two weeks in 2wd

A mere 2,400km into the life of my 07 Rodeo TD 4WD, I used 4L for about 2km of medium-steep/slippery track. After stopping and selecting 2WD the 'Check 4WD' light appeared, meaning I was stuck in 2WD for the rest of that trip. Luckily I was able to complete the trip in 2WD without incident.

The dealer blamed me for 'not following the instructions in the manual' (utter codswallop), 'fixed' it, and very reluctantly gave me a scribbled set of instructions on resetting the system, which I've included below.

When I suggested that these instructions should be included in the manual, the response was 'not necessary if owners use the system correctly'. More cods.

Here's how to reset it:

1. Ignition off, hold all 3 buttons (2H, 4H & 4L) in together

2. Switch ignition on to 'reds' position (last position before start)

3. Hold in this state for 30 seconds

Hope this may be of use !!

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Mitsubishi delicia 2.6 td (shogun engine). fails to release from 4wd so two front wheel lights flashing on dash. Its an auto but have tried usual things like re-engage then disengage and straight line...


Check the super select solenoids. I had the same problem with my pajero/montero io, when I released 4WD from 4H to 2H the two front wheels lights started flashing. They stopped flashing and was solid on when I re-engaged the 4WD (2H to 4H).

My problem was a failure in the 2H solenoid, it was not producing enough vacuum. The problem was intermitent at the begining and then was permanent.

I checked the solenoids in this way:
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2) The solenoid that receives the vacuum in the top is for 4H
3) Both solenoids operate in the same way, they only change in the way they transfering vacuum from top/botton to the exit pipe (2H or 4H). The difference is that one has the vacuum input on the top and the another one in the botton.
4) The default position when you disconnect the electronics is 4WD
5) Try disconnecting the electronics and switching the output pipe between the solenoids. This will put the solenoids on 4WD position and you changed the pipes, so the 4WD should disengage.

4WD should disengage if your 4H solenoid is OK, the ligths should now flash when you change from 2H to 4H because 4WD cannot engage because the pipes are switched. You can also check the vacuum of each solenoid with your finger on each one.

If this doesn't work, try to bypass the solenoids and connect the input vacuum hose to the 2H output pipe. If the lights doesn't turn off in 2H mode it's posible that you have different problem.

Also check this address: http://4wd.blogeasy.com/article.view.run?articleID=318776

Good luck.

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