1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Locking Diff Question

Discussion in '2nd Gen. Tacomas' started by jtacoma1, Mar 9, 2011.

  1. Mar 9, 2011 at 9:50 PM
    #1
    jtacoma1

    jtacoma1 [OP] Member

    Joined:
    Mar 9, 2011
    Member:
    #52722
    Messages:
    18
    Gender:
    Male
    First Name:
    J
    South Orange County, CA
    Vehicle:
    '11 Tacoma DC 4x4
    I'm new to this forum and new 4x4 owner. Second Tacoma.

    Just purchased 2011 Tacoma DC 4x4. Before I drove the car off the lot there was an indicator light on which the salesman said was the 4x4 light. We cycled between 2H and 4H and the light persisted. He then instructed me to accelerate above 25mph to disengage the 4x4.

    Quick jump to the end - the light wasn't 4x4 it was the Locking Diff engaged indicator.

    My question: Is it possible that anything could have been damaged driving with the LD engaged on pavement and accelerating to greater than 25? Is there anything to look for?


    Thanks for your help.
     
  2. Mar 9, 2011 at 9:52 PM
    #2
    whippersnapper02

    whippersnapper02 Well-Known Member

    Joined:
    Dec 20, 2009
    Member:
    #27905
    Messages:
    35,266
    Gender:
    Male
    First Name:
    Christian
    Yorba Linda, CA
    Vehicle:
    10 MGM TRD OR 4wd Auto DCSB
    Banks Monster Exhaust, Pop n Lock tailgate lock, Hook-Ups tie down brackets, USA Spec Ipod adaptor, WO seat covers, color matched grill with Grillcraft insert, Tuffy locking bed box
    It is fine. For future reference red is locker and green is 4wd.
     
  3. Mar 9, 2011 at 9:56 PM
    #3
    toyotatacomaTRD

    toyotatacomaTRD Senior Member

    Joined:
    Sep 16, 2010
    Member:
    #43379
    Messages:
    1,179
    Gender:
    Male
    First Name:
    Rob
    Pacific Northwest
    Vehicle:
    4x4 DC TRD Off Road
    11 Color Matched Grille, Pro comp 7089s, 265/70/17 Wrangler Duratracs, Black Running Boards, Tinted Windows, Bed mat, Weathertech Floorliners
    What Christian said.

    Here is what it looks like engaged.

    [​IMG]
     
  4. Mar 10, 2011 at 9:14 AM
    #4
    David K

    David K Well-Known Member

    Joined:
    Jun 27, 2009
    Member:
    #18969
    Messages:
    8,827
    Gender:
    Male
    San Marcos, Alta California
    Vehicle:
    2010 4WD Off Road DC
    Differential Breather Mod Light Bar: 2 Hella 4000 HID, 1 Kragen HID, 1 Cibie Halogen.
    Welcome to TW... This very same issues and same salesman lack of knowledge promted me to post the following... see the bottom image for what happened to you (remember, if it is blinking, it isn't engaged... the rear locker only works in L4, but the light blinks anytime you push the RR Locker Button):

    Recently some have posted that the truck was 'stuck' in '4WD' because the light was on or blinking... only to later learn it was just the differential lock switch pushed in! That light is below the 4WD light...

    The lights are different... So, I just took some photos so we all can see. Let's go through the levels of traction activation and see what it all looks like:

    [​IMG]

    Normal dial position for paved roads or where traction assistance of 4WD (four wheel drive) is not needed.

    [​IMG]

    The lower switch, next to mirror controls (car with skid lines below) is the VSC OFF switch. This also activates AUTO LSD when in 2WD with a quick push. Auto LSD is traction control without the engine output regulated.

    [​IMG]

    This is what comes on with AUTO LSD active. The VSC OFF light goes out above 30 mph.

    [​IMG]

    If you stop the truck and hold down the VSC OFF switch for 3+ seconds, VSC and TRAC both turn off for open differential(s) in H2 or H4.

    [​IMG]

    Go into H4 (4WD High Range) from 0-60 mph if you need more traction because of poor conditions or off highway needs.

    [​IMG]

    This is the 4WD High Range indicator light... two differentials and 4 tires. TRAC in H4 has no engine regulation, the same as AUTO LSD in H2.

    [​IMG]

    For more torque to power through deep snow or mud or to climb up or down steep grades, stop truck, put tranny into N (Neutral, not Park), and rotate dial to L4.

    [​IMG]

    Low Range 4WD indicator light. VSC goes off in L4 and both differentails are open.

    [​IMG]

    If your 4WD Tacoma is an '09 + Off Road TRD, you have 'Active Traction Control' (A-TRAC) that provides the 'brake-locking' of any non-traction (spinning) tires front or rear for tractor like crawling/ climbing. Gives traction control while in low range. Push this switch just once when in L4 and A-TRAC will activate when-ever needed to keep moving while in L4.

    [​IMG]

    A-TRAC activated light.

    REAR LOCKER:

    [​IMG]

    As Toyota states, use only as a last resort and turn off when out of trouble.

    [​IMG]

    While in L4 (for 4WD Tacomas), press the RR DIFF LOCK switch. (I engaged it twice today while stopped)

    [​IMG]

    The Rear Differential Lock indicator is the x'ed rear differential image. If it doesn't engage, or if it is pressed while in H4 or H2 (for 4WD Tacomas) it will BLINK! Remember, when locked there is no differential action to allow the tires to rotate at different speeds, as needed when turning.
     
  5. Mar 10, 2011 at 9:22 AM
    #5
    tiresmokintacoma

    tiresmokintacoma Bean&Cheese Taco

    Joined:
    Jul 7, 2009
    Member:
    #19408
    Messages:
    424
    Gender:
    Male
    First Name:
    VIC
    Texas
    Vehicle:
    Lexus LX450
    No lift tucking 35s with sliders
    @David K. Very very nice!! I just learned something :) :)
     
  6. Mar 10, 2011 at 9:27 AM
    #6
    David K

    David K Well-Known Member

    Joined:
    Jun 27, 2009
    Member:
    #18969
    Messages:
    8,827
    Gender:
    Male
    San Marcos, Alta California
    Vehicle:
    2010 4WD Off Road DC
    Differential Breather Mod Light Bar: 2 Hella 4000 HID, 1 Kragen HID, 1 Cibie Halogen.
    Thank you.. happy to help... See my link below for more details on the traction options... the truck is awesome!:D
     
  7. Mar 10, 2011 at 9:35 AM
    #7
    tiresmokintacoma

    tiresmokintacoma Bean&Cheese Taco

    Joined:
    Jul 7, 2009
    Member:
    #19408
    Messages:
    424
    Gender:
    Male
    First Name:
    VIC
    Texas
    Vehicle:
    Lexus LX450
    No lift tucking 35s with sliders
    I have a 2wd... :( but soon soon I will be getting me a new trd or 4x4 taco. Then I will really need all this information! But I do have a question for the RR on a 01 taco trd. Does it have to be in neutral to engage it also. Its my father in laws and he can't get it to work. It just blinks. Anything else it could be?
     
  8. Mar 10, 2011 at 9:39 AM
    #8
    whippersnapper02

    whippersnapper02 Well-Known Member

    Joined:
    Dec 20, 2009
    Member:
    #27905
    Messages:
    35,266
    Gender:
    Male
    First Name:
    Christian
    Yorba Linda, CA
    Vehicle:
    10 MGM TRD OR 4wd Auto DCSB
    Banks Monster Exhaust, Pop n Lock tailgate lock, Hook-Ups tie down brackets, USA Spec Ipod adaptor, WO seat covers, color matched grill with Grillcraft insert, Tuffy locking bed box
    For a 2wd just push it and go. Sometimes you have to turn the wheel left to right while moving to get it to lock.
     
  9. Mar 10, 2011 at 9:41 AM
    #9
    GetBarelled

    GetBarelled New to these parts...

    Joined:
    Jan 26, 2011
    Member:
    #50009
    Messages:
    46
    Gender:
    Male
    First Name:
    Ry
    Los Angeles
    Vehicle:
    05 TRD Off Road 6-spd
    Billy 5100's all around, diff-drop kit, Magnaflow exhuast, URD TSK, Comp Clutch Stage II, URD short-throw kit, bolt-on bull bar, Anzo headlights, iPhone aux jack
    David K +1 rep. Thanks for taking the time.
     
  10. Mar 10, 2011 at 9:47 AM
    #10
    tiresmokintacoma

    tiresmokintacoma Bean&Cheese Taco

    Joined:
    Jul 7, 2009
    Member:
    #19408
    Messages:
    424
    Gender:
    Male
    First Name:
    VIC
    Texas
    Vehicle:
    Lexus LX450
    No lift tucking 35s with sliders
    And if it still doesn't lock what could it be? Its an 01 trd OR with only 62,xxx miles. It just blinks and blinks.
     
  11. Mar 10, 2011 at 9:50 AM
    #11
    BryWi

    BryWi Psalm 109:8

    Joined:
    Dec 5, 2010
    Member:
    #47177
    Messages:
    1,777
    Gender:
    Male
    Earth
    Vehicle:
    2011 TRD off-road DC SB w/JBL
    5100s, black valance
    I was just going to search this topic.

    I was driving to work THIS MORNING (2 am) and there was some fog, so I decided to fire up the fog lights.

    I was playing with the radio and I look up and see the red flashing 4-wheel thingy.

    I say, WTF. Why is my 4WD on? I push the overhead light and see that I had pushed in the RR diff lock by mistake.

    Then I'm thinking "did I F something up?"

    Of course we know the answer. Off -road newbs. Sheesh... :facepalm:
     
  12. Mar 10, 2011 at 10:10 AM
    #12
    whippersnapper02

    whippersnapper02 Well-Known Member

    Joined:
    Dec 20, 2009
    Member:
    #27905
    Messages:
    35,266
    Gender:
    Male
    First Name:
    Christian
    Yorba Linda, CA
    Vehicle:
    10 MGM TRD OR 4wd Auto DCSB
    Banks Monster Exhaust, Pop n Lock tailgate lock, Hook-Ups tie down brackets, USA Spec Ipod adaptor, WO seat covers, color matched grill with Grillcraft insert, Tuffy locking bed box
    Sounds like a issue with the unit.
     
  13. Mar 10, 2011 at 12:33 PM
    #13
    David K

    David K Well-Known Member

    Joined:
    Jun 27, 2009
    Member:
    #18969
    Messages:
    8,827
    Gender:
    Male
    San Marcos, Alta California
    Vehicle:
    2010 4WD Off Road DC
    Differential Breather Mod Light Bar: 2 Hella 4000 HID, 1 Kragen HID, 1 Cibie Halogen.
    My first Taco was an '01 with the locker... but all three of mine seemed to often take several attempts to lock the rear.

    The key seems to be to have no spinning of tires, and to have no load on the tires... what I mean by load is engine torque...

    In order for the locking gear to slide into the differential gear, both axles must be still or moving at the same rate (usually slowly)... Foot off the brake so if the locking gear needs to nudge the drive gears, it can.

    When I went into the snow a couple weeks ago, the rear locker engaged easily at the first attempt each time I used it. When I went to the desert last weekend, it took me 6 tries to get it to engage... So, go figure!:rolleyes:

    A-TRAC is sweet, it never needs coaxing to work!
     
  14. Mar 10, 2011 at 3:30 PM
    #14
    jtacoma1

    jtacoma1 [OP] Member

    Joined:
    Mar 9, 2011
    Member:
    #52722
    Messages:
    18
    Gender:
    Male
    First Name:
    J
    South Orange County, CA
    Vehicle:
    '11 Tacoma DC 4x4
    Thanks for the help. Learned a lot.
     
  15. Mar 10, 2011 at 4:12 PM
    #15
    muddog321

    muddog321 Member

    Joined:
    Dec 22, 2009
    Member:
    #27973
    Messages:
    13
    Gender:
    Male
    fl
    Vehicle:
    09 tacoma doublecab 4wd trd w/e locker
    After reading all the posts- electric rear diff lock ONLY works in 4LO so per your initial question you could never get it to lock in 2HI or 4HI so no way to damage it.
     
  16. Apr 23, 2011 at 9:14 AM
    #16
    David K

    David K Well-Known Member

    Joined:
    Jun 27, 2009
    Member:
    #18969
    Messages:
    8,827
    Gender:
    Male
    San Marcos, Alta California
    Vehicle:
    2010 4WD Off Road DC
    Differential Breather Mod Light Bar: 2 Hella 4000 HID, 1 Kragen HID, 1 Cibie Halogen.
    Correct... the light for thr rear locker BLINKS if you pushed the button (and doesn't engage)... no matter when you push the button.

    The only time it will engage (and the light goes from blinking to solid) is when you are already in L4 (on 4WD Off Road Tacos).
     
  17. Apr 23, 2011 at 1:21 PM
    #17
    slidellkid

    slidellkid Member

    Joined:
    Apr 23, 2011
    Member:
    #55399
    Messages:
    12
    Gender:
    Male
    I doubt seriously there is a salesman out there that can explain this stuff to you. It's really pretty sad how little they know. Thanks for the explanation
     
  18. Apr 23, 2011 at 7:51 PM
    #18
    DocD

    DocD Well-Known Member

    Joined:
    Aug 5, 2009
    Member:
    #20716
    Messages:
    388
    Gender:
    Male
    Mn.
    Vehicle:
    09 access cab
    Thanks as I have been confused, should be made a sticky
     
  19. Apr 23, 2011 at 7:52 PM
    #19
    David K

    David K Well-Known Member

    Joined:
    Jun 27, 2009
    Member:
    #18969
    Messages:
    8,827
    Gender:
    Male
    San Marcos, Alta California
    Vehicle:
    2010 4WD Off Road DC
    Differential Breather Mod Light Bar: 2 Hella 4000 HID, 1 Kragen HID, 1 Cibie Halogen.
    I probably helps that I love my truck and can't use it off road enough! Christian did say it well when he blames the customer for not knowing more when they go shopping for a truck. I do think that a salesman with some energy could provide some wow factor if he did explain that the system Toyota uses provides the traaction previously requiring expensive add ons for.
     
  20. May 11, 2011 at 1:28 PM
    #20
    Manchu

    Manchu Member

    Joined:
    Apr 7, 2011
    Member:
    #54546
    Messages:
    10
    Gender:
    Male
    First Name:
    Steve
    Eugene Or.
    Vehicle:
    SR5
    Old man Emu lift Cbi Moab 2.0 front bumper Goodyear Duratrac Warn M8000 All-Pro pack rack CVT Mt. Shasta
    Well after read though the treads I think mine is different. My 07 toco will go into 4hi but when I try to go into 4lo (going slow or stopped) all that it does is beep and the 4LO light blinks.
     
To Top