H4 to L4 Crunchy 2014 SR 4x4 AUTO

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H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby mickms on Thu, 23 Apr 2015 1:06 +0000

hey guys,

Iv'e got a new 2014 Sr,

Crunchy Gear noise going from H4 to L4, see posted video,http://youtu.be/z3X78OwyvAI my mechanic has never seen it before.
Toyota thinks im crazy. Bit of attitude from service guy....not my first 4x4 bud..

Its going in for a service on Thursday.

Its got me worried, anyone else with a similar issue, i read on this forum a guy with a 2013 had an similar issue, was it resolved?


http://youtu.be/z3X78OwyvAI

Cheers.
Last edited by mickms on Thu, 23 Apr 2015 2:06 +0000, edited 1 time in total.
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Re: H4 to L4 Crunchy 2014 SR 4x4

Postby dino12 on Thu, 23 Apr 2015 1:37 +0000

Mate the shift between 4h and 4l is a non synchro shift. If you are very expert. like a truck driver using a crash box, you can do it on the move at VERY LOW speeds. I have only done this change on one automatic, an early jeep cherokee. With a manual it is a breeze, just stop vehicle , put foot on clutch and shift lever. In an auto, i suggest 1.Stop vehicle. 2. Place transmission in neutral. 3 move shift lever. If it won't shift, place transfer case in neutral and gearbox in drive for a couple of seconds. This will let the cogs line up in the transfer case. Then move box to neutral again and move transfer case lever again from hi to low. THIS IS THE BIT THEY ALL LEAVE OUT. These lever transfer cases were in use before auto fourbies were in use and as i said anyone who could use a crash box and double declutch as in big trucks, could change on the move at slow speeds. for normal people, stopping and then moving the lever stops the crunch . Just try stopping the vehicle, putting auto trans in neutral and then shifting from 4h to 4l.
cheers. dave
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Re: H4 to L4 Crunchy 2014 SR 4x4

Postby Gipsy on Thu, 23 Apr 2015 1:39 +0000

Manual or auto? In my 2013 SR5 auto I must select N to change h to lo and back else crunch. If vehicle is moving it goes into lo ok but whilst stopped I must select neutral or it crunches. As if you are changing a manual gearbox without using the clutch. :o

X2 dino that's how mine works... but your explanation much more succinct than mine ;)

Cheers G
Cheers Gipsy :D although I'm sure somebody will challenge that :lol: even Einstein wasn't certain of his theories.
My 2013 auto D4D DC SR5, prefilter, 3" exhaust and Chip with egt probe, stock SR5 rims with Toyo Open Country AT2 265/65R/17's
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Re: H4 to L4 Crunchy 2014 SR 4x4

Postby mickms on Thu, 23 Apr 2015 2:06 +0000

its the video i posted working, it shows the issue.
It's an auto
I shift only in Neutral when stationary with brake on.
if transfer is in neutral, how can it be driven if shift is in D? I haven't tried it.
Im not keen on experimenting on 40K of car ... :cry:
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby Gipsy on Thu, 23 Apr 2015 2:22 +0000

I use this: Stop the vehicle, shift transmission into N, wait a few seconds then shift the transfer into lo4, then shift the transmission into D. This allows the gears to slow down and mesh since the transfer case is not syncro. If you are on the fly, (vehicle moving SLOWLY) the change can be made from h2 to h4 if you are smooth and quick, else stop and use the above method. On the fly, you have some ability to 'mesh' the gears like a crash box but stationary you must select transmission N before trying to shift the transfer.

changing from h4 to lo4 requires you to stop and follow the above... that is why you should always select the appropriate gear BEFORE you enter difficult conditions...(unless you are an adrenalin junkie :lol: ) but going from h2 to h4 can be done on the fly.

Cheers G ;)
Cheers Gipsy :D although I'm sure somebody will challenge that :lol: even Einstein wasn't certain of his theories.
My 2013 auto D4D DC SR5, prefilter, 3" exhaust and Chip with egt probe, stock SR5 rims with Toyo Open Country AT2 265/65R/17's
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby aandy on Thu, 23 Apr 2015 2:38 +0000

I just watched your video, I can confirm my 2011 SR5 d4D does not do this, it clicks in and out with no noise and no crunches when stopped.
Time to make some noise at toyota service.
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby Gipsy on Thu, 23 Apr 2015 2:44 +0000

I just watched it too... and mine does this also. I suggest this is just the gears meshing and probably as the gearbox is still tight, there is some rotation. Just a thought.
Cheers Gipsy :D although I'm sure somebody will challenge that :lol: even Einstein wasn't certain of his theories.
My 2013 auto D4D DC SR5, prefilter, 3" exhaust and Chip with egt probe, stock SR5 rims with Toyo Open Country AT2 265/65R/17's
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby mickms on Thu, 23 Apr 2015 3:17 +0000

Gipsy wrote:I just watched it too... and mine does this also. I suggest this is just the gears meshing and probably as the gearbox is still tight, there is some rotation. Just a thought.


Gears meshing dont sound like that.
Toyota is chargig me $190 PH to diagnose...
Lets see what happens on thursday, i intend on showing the toyota guy the issue in the lot, then taking it from there.
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby alexisdmtr on Thu, 23 Apr 2015 4:54 +0000

What do you mean Toyota charges 190 for the diagnosis?isnt it still under warranty?they have to do it.i had the same issue as urs (13 auto 3l) and as it was my first auto 4x4 i tried engage the l4 while i was in D....gearbox didnt like it all.when i put it on N everything went good no noises no nothing.i have 40k on it too and everything works great.for the h4 you can do it easily with speeds up to 60...for the l4 i always stop the vehicle completely
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby mickms on Thu, 23 Apr 2015 7:20 +0000

yes its still under warranty i dont intend on paying a cent to get it fixed.

Yes i am stationary for the gear changes.
Any advice on dealing with toyota service?
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby DeadlyBeast on Thu, 23 Apr 2015 7:57 +0000

Couple of threads here mate
Toyota master tech says its normal... you may not have much luck with your local dealer
http://www.newhilux.net/phpbb/viewtopic.php?f=12&t=20851
2 new 2014 Auto D4D's , one grinds very bad but the other one doesnt - luck of the draw perhaps
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby Qwerty on Thu, 23 Apr 2015 10:09 +0000

I find if you're slow or limp with the transfer into 4l from 4h it will bite every time even when stationary.

Be fast n firm with it , no time to bite, in she goes.

I usually stop completely , auto into n and Change but lately have going I can do so around 10kmh (still drop to N but still rolling) and she drops in/ out no worries. Again
Tho , fast n firm slam her in.
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby alexisdmtr on Fri, 24 Apr 2015 12:41 +0000

Qwerty wrote:I find if you're slow or limp with the transfer into 4l from 4h it will bite every time even when stationary.

Be fast n firm with it , no time to bite, in she goes.

I usually stop completely , auto into n and Change but lately have going I can do so around 10kmh (still drop to N but still rolling) and she drops in/ out no worries. Again
Tho , fast n firm slam her in.

Yea thats how it works most of times...[emoji12]
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby Gipsy on Fri, 24 Apr 2015 8:23 +0000

Yep looks like a combination of luck of the draw and slow gearchange.

After scratching my head all night I came up with this: If you disagree please feel free to fill your boots and wade in with your answers.

Thesis: the auto is virtually the same as the manual system, with the one major difference; when you disengage the clutch in a manual, you disconnect the transmission from the flywheel. In an auto box the torque convertor still turns and the internals (layshaft etc.) continue to turn albeit with little or no output torque.

Think of the transfer case as a manual gearbox on the end of an auto slushbox, and the Neutral position the remnants of the old PTO (power take off). If you stop in the N position this allows the gears to rotate ever so lightly and then you get a crunch when moving into a gear (lo4 or h4). The same applies to most manual gearboxes in most vehicles: change up or down and if you hesitate in Neutral on the way, you'll probably get a crunch unless you double-de-clutch (double-shuffle if you prefer). In the V8 supercars the shift up and down is INSTANT, no neutral, with a momentary cut to engine power, (kind of like a double declutch) and they have a 'crash box'(no syncro). Sometimes they miss a gear and get into all kinds of strife.

You can test this theory with a manual box if you try to change h4 to lo4 with the transmission in NEUTRAL and the clutch engaged...(as opposed to in-gear clutch disengaged) goes something like this: gearbox shaft turns, transfer case gears turn.... crunch! ESPECIALLY if you stop in the neutral transfer case position on the way through.

I agree with qwerty, "fast and firm" else you will always crunch the transfer. ;)

'nuff said, Cheers G
Cheers Gipsy :D although I'm sure somebody will challenge that :lol: even Einstein wasn't certain of his theories.
My 2013 auto D4D DC SR5, prefilter, 3" exhaust and Chip with egt probe, stock SR5 rims with Toyo Open Country AT2 265/65R/17's
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby Qwerty on Fri, 24 Apr 2015 8:50 +0000

I remember when i first got the lux and wasn't awre of the fast n firm need ... i was full of sauce one night n the beach and trying to move her to get bed level (technically pissy driving, sue me...)... needed low range as was progressively bogging myself... and it just kept biting and grating as I was being super gentle with it.

being completely off chops I was trying even more gently, eventually something got upset and the was an auto warning light on the dash (shift to park light i think its called).

Next morning realised error my ways.

Not that I'd ever read a manual (!) but i wonder if it says anything in there about being fast n firm.
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby Mircea Dobre on Fri, 24 Apr 2015 9:39 +0000

Hey, mine was doing the same but now shift it to P and then change to Low. No more problems but I will also try in N.
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby Gipsy on Fri, 24 Apr 2015 10:50 +0000

Read it last night... nothing about fast and firm, well actually nothing about anything! The manuals for the lux are not even for dummies let alone someone who wants to know stuff :evil:

I had to resort to many hours of lost sleep and 45 years of aircraft engineering theory... yes I even dug deep about helicopter theory and how the transmission in a helicopter has similar function to an auto box. Imagine trying to start a helicopter and get those giant blades rotating? Similar to the lux's transfer case only no double-de-clutch there :lol: As in an auto box, a helicopter does not have a direct coupling to the power plant, just a slippery friction drive and lots of high-tech engineering :lol:

Yes mircea dobre, I thought of offering that advice but thought I would be howelled off the forum... P does lock up the transmission and, whilst allowing the old PTO to rotate, you need to select a gear in the transmission to operate the PTO with full power. I guess I'm just old school because most would not know about PTO :(

Cheers G
Cheers Gipsy :D although I'm sure somebody will challenge that :lol: even Einstein wasn't certain of his theories.
My 2013 auto D4D DC SR5, prefilter, 3" exhaust and Chip with egt probe, stock SR5 rims with Toyo Open Country AT2 265/65R/17's
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby LUBR90 on Wed, 23 Dec 2015 12:13 +0000

Good to see mine is a late 2014 auto sr5 and i can confirm mine does this too, has 10 000kms on it.
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby hiluxruss on Wed, 23 Dec 2015 5:33 +0000

my 14' auto does it in park trying to put into l4 goes into h4 no worries ..as the others said l4 engages fine in neutral
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Re: H4 to L4 Crunchy 2014 SR 4x4 AUTO

Postby Richolux150 on Wed, 23 Dec 2015 5:47 +0000

Fortunately my 2012 manual doesn't do this........you can actually split the box on the go....L4 to H4....
I haven't been successful trying it the other way round just yet......H4 to L4......may just have to grind a few sharp edges off....... :shock: :shock: :shock:
Cheers Richo
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