Question about 2008 Toyota Tacoma

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H4 button not working in hdj81

H4 button on the dash not working...but got it fixed by a local mechanic...so the mechanic simply said he engaged it permanently...but i couldn't understand what he really did..felt a power loss on the highway then..

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+1 In addition to tire wear, having the truck locked into 4wd all the time will increase wear on the driveline, and turns on pavement will result in binding and "popping" as the front and rear axles turn at different rates.

Did the "mechanic" lock the system into 4H because your switch had malfunctioned, or because there was a problem with the actuator on the transfer case and front diff? If it was simply a matter of a bad switch, that is a $60 part from the dealer at full retail.

Posted on Apr 13, 2014

  • shiyazer
    shiyazer Apr 13, 2014

    Thanks, seems like i have bad actuator. Because i took the vehicle to an Auto electrician and the confirmed the switch is working fine. I do not want to take my vehicle to a different workshop untill i get a diagram showing what are the parts included and how the actuator engages. I am living in india and this vehicle is really rare so the experts too. Thanks for your help.

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Don't drive around with H4 engaged all the time. You will feel power loss on the highway and wear out the tires prematurely. Find another mechanic! Get it fixed right.

Posted on Apr 12, 2014

Testimonial: "Thanks,"

  • CB91710 Apr 13, 2014

    +1 In addition to tire wear, having the truck locked into 4wd all the time will increase wear on the driveline, and turns on pavement will result in binding and "popping" as the front and rear axles turn at different rates.

  • shiyazer
    shiyazer Apr 13, 2014

    Thanks for CB and Ron, It looks like the mechanic did a quick solution. He solved my problem giving me another.

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