2006 TUNDRA 4X4 AUTO LSD?

Just took possession of a new 2006 Tundra 4x4 standard cab with 8' bed. When
would I want to use the Auto LSD button? It seems to me that under slippery
conditions I should just switch to 4wd?

INDIVIDUAL wrote:[color=blue]
> Just took possession of a new 2006 Tundra 4x4 standard cab with 8' bed. When
> would I want to use the Auto LSD button? It seems to me that under slippery
> conditions I should just switch to 4wd?[/color]

What does the skinny book, in the glove box say?

While that sounds crass, perhaps checking what Toyota's engineers think
before a bunch on anonymous opinions from the Internet might make sense?

If it's FULL TIME 4 wheel drive, there's no option to switch to 4 wheel
drive and it's called 4X4. If there's a neat little button on the dash
to switch to 4 wheel drive, it's called 4X2. The 4 wheel drive button
is designed to get you out of jams, NOT to drive around daily with it
on. This will tear up the transmission, transfer case and differentials
as it's not designed for FULL TIME 4 wheel drive. This button is
designed to get you unstuck, steering straight ahead! If you drive
around turning corners with this on, it WILL tear up your front axle
and you'll hear awful noises coming from the same.
I'm not familiar with the LSD. It sounds like a suspension adjusting
device sensitive to loads in the truck. I'd imagine this is turned on
when hauling or towing stuff.

Barry, the whole idea of this site is for additional opinions. No one
is expected, or recommended, to take anyone's word as law here. Lighten
up, and if this is your opinion, why are you here???

The skinny book in the glove box is rather evasive about it. Yes I read the
manuals that came with the vehicle and checked with the dealership where I
purchased it. Thank you for your sincere efforts to help Barry!!!



"B a r r y" <keep_it_in_the_newsgroup_please@thankyou.com> wrote in message
news:ohDKf.1777$%m4.682@newssvr33.news.prodigy.com...[color=blue]
> INDIVIDUAL wrote:[color=green]
>> Just took possession of a new 2006 Tundra 4x4 standard cab with 8' bed.
>> When would I want to use the Auto LSD button? It seems to me that under
>> slippery conditions I should just switch to 4wd?[/color]
>
> What does the skinny book, in the glove box say?
>
> While that sounds crass, perhaps checking what Toyota's engineers think
> before a bunch on anonymous opinions from the Internet might make sense?[/color]

It is a Limited Slip Differential (rear) (LSD) which is turned on or off
with a dash button. The vehicle is a part time 4wd so I guess I should have
said 4x2. My mistake.In any case I am looking for help on the Auto LSD
button which as you stated you are not familiar with.Thanks for your advice
on 4 wheel drive systems!

"MrFixit469" <MrFixit469@verizon.net> wrote in message
news:1140541074.427652.58220@z14g2000cwz.googlegroups.com...[color=blue]
> If it's FULL TIME 4 wheel drive, there's no option to switch to 4 wheel
> drive and it's called 4X4. If there's a neat little button on the dash
> to switch to 4 wheel drive, it's called 4X2. The 4 wheel drive button
> is designed to get you out of jams, NOT to drive around daily with it
> on. This will tear up the transmission, transfer case and differentials
> as it's not designed for FULL TIME 4 wheel drive. This button is
> designed to get you unstuck, steering straight ahead! If you drive
> around turning corners with this on, it WILL tear up your front axle
> and you'll hear awful noises coming from the same.
> I'm not familiar with the LSD. It sounds like a suspension adjusting
> device sensitive to loads in the truck. I'd imagine this is turned on
> when hauling or towing stuff.
>[/color]

INDIVIDUAL wrote:[color=blue]
> It is a Limited Slip Differential (rear) (LSD) which is turned on or off
> with a dash button.[/color]

Are you sure it's not a LOCKING DIFFERENTIAL?

LSD usually works on it's own.

MrFixit469 wrote:[color=blue]
> Barry, the whole idea of this site is for additional opinions.[/color]

Site?

1.) This is usenet, not a site. 8^)

2.) My Tacoma's manual is quite complete in it's description of LSD,
Locking Diffs, and the use of 4wd high and low. I'd expect the Tundra
to have similar in

Since he's so clueless, a great first place to start is the manual.
Then, when something doesn't make sense, a much better question can be
presented, no?

Even with the "opinions" available here, the manual still has plenty of
terrific information.


Would you rather read the 100th request for how to turn off the "Service
Engine Soon" light? <G>

YES I AM SURE

"B a r r y" <keep_it_in_the_newsgroup_please@thankyou.com> wrote in message
news:ymJKf.15801$NS6.13771@newssvr30.news.prodigy.com...[color=blue]
> INDIVIDUAL wrote:[color=green]
>> It is a Limited Slip Differential (rear) (LSD) which is turned on or off
>> with a dash button.[/color]
>
> Are you sure it's not a LOCKING DIFFERENTIAL?
>
> LSD usually works on it's own.[/color]

It seems as if I have come up with something which you know nothing about
Barry. Thanks for trying. If there is anybody who actually can help it would
be appreciated. Calling me culeless is just a way for someone who knows
nothing to write about it. I'm sure this is a bit over your head so I'll
just let it go.


"B a r r y" <keep_it_in_the_newsgroup_please@thankyou.com> wrote in message
news:ymJKf.15801$NS6.13771@newssvr30.news.prodigy.com...[color=blue]
> INDIVIDUAL wrote:[color=green]
>> It is a Limited Slip Differential (rear) (LSD) which is turned on or off
>> with a dash button.[/color]
>
> Are you sure it's not a LOCKING DIFFERENTIAL?
>
> LSD usually works on it's own.[/color]

The Auto LSD is not a real LSD but part of the Vehicle Stability Control
system. The Auto LSD achieves the equivalent functions of an LSD (Limited
Slip Differential) through the use of a traction control system. When the
driver presses the Auto LSD switch, this system achieves the LSD effect by
regulating the hydraulic pressure that acts on the drive wheels and
controlling the engine output in accordance with the amount of pedal effort
applied on the accelerator. Auto LSD tends to enhance the acceleration
effort somewhat, in order to apply greater drive torque to the wheel that is
making contact with the ground. Thus, this function enables the vehicle to
get unstuck if a wheel loses its grip, and enhances the vehicle's startoff
performance on high-resistance surface conditions such as gravel roads


"INDIVIDUAL" <NOT@NOT.COM> wrote in message
news:43fb5962$0$5694$9a6e19ea@unlimited.newshosting.com...[color=blue]
> It is a Limited Slip Differential (rear) (LSD) which is turned on or off
> with a dash button. The vehicle is a part time 4wd so I guess I should
> have said 4x2. My mistake.In any case I am looking for help on the Auto
> LSD button which as you stated you are not familiar with.Thanks for your
> advice on 4 wheel drive systems!
>
> "MrFixit469" <MrFixit469@verizon.net> wrote in message
> news:1140541074.427652.58220@z14g2000cwz.googlegroups.com...[color=green]
>> If it's FULL TIME 4 wheel drive, there's no option to switch to 4 wheel
>> drive and it's called 4X4. If there's a neat little button on the dash
>> to switch to 4 wheel drive, it's called 4X2. The 4 wheel drive button
>> is designed to get you out of jams, NOT to drive around daily with it
>> on. This will tear up the transmission, transfer case and differentials
>> as it's not designed for FULL TIME 4 wheel drive. This button is
>> designed to get you unstuck, steering straight ahead! If you drive
>> around turning corners with this on, it WILL tear up your front axle
>> and you'll hear awful noises coming from the same.
>> I'm not familiar with the LSD. It sounds like a suspension adjusting
>> device sensitive to loads in the truck. I'd imagine this is turned on
>> when hauling or towing stuff.
>>[/color]
>
>[/color]

INDIVIDUAL wrote:[color=blue]
> It seems as if I have come up with something which you know nothing about
> Barry.[/color]

Absolutely! As another poster mentioned, it's not really a limited slip
differential at all. I tend to avoid electronic traction control on
4x4's. My off-road use often involves airing down tires, which usually
confuses the heck out of them. These devices usually use the brakes to
grab the spinning wheel, mechanically forcing the torque to the wheel
with more traction, which the differential now thinks is the wheel with
LESS traction. Another poster mentioned "hydraulic pressure", that's
brakes. In a vehicle with ABS, the wheel speed sensor is already there,
so adding computerized traction control is cheap and easy. Even the
cheesy Chevy Cavalier had a version of this.


Here's some background on how a differential works, which will make the
computerized brake application make sense:

<http://en.wikipedia.org/wiki/Differential_%28mechanics%29>

Limited slip and locking differentials are frequently confused, and
Toyota does offer an electric locker, hence my request for clarification.

<http://en.wikipedia.org/wiki/Limited_slip_differential>
<http://en.wikipedia.org/wiki/Locking_differential>

A real LSD works ALL the time and won't be damaged by high-traction
surfaces. A locker mechanically locks both axle halves together,
defeating the operation of the differential altogether. This can have
an effect so extreme as to push you straight ahead with the wheels
turned on low traction surfaces.

The other "opinion" that questioned my referring you to the manual even
confused the LSD button with the 4WD selector and air suspension. <G>

FWIW, running the truck in 4WD for a few miles on a regular basis is
usually a good idea. Do this on rainy days, and not in areas where
tight turns are required, like parking lots. This actuates all the
parts, spins the shafts, and distributes lubricants.

Good luck with your brush guard...

INDIVIDUAL wrote:[color=blue]
> It seems as if I have come up with something which you know nothing
> about Barry. Thanks for trying. If there is anybody who actually can
> help it would be appreciated. Calling me culeless is just a way for
> someone who knows nothing to write about it. I'm sure this is a bit
> over your head so I'll just let it go.
>[/color]

There you go, that's the way to get help. Don't bother to read your manual,
then when you post a question and someone asks something to define it and
make sure they understand, you attack them and flame them with your personal
opinions. Once you get an answer, be like a lot of others and don't bother
to come back until you need something again, there'll be a whole bunch of
people just waiting to help you.
davidj92