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Comments
I put it in 4WD a couple of weeks ago for the 1st time this winter, and just noticed from the 'hum'/ vibration, that I believe it's still in 4WD.
Questions:
- with the age of the vehicle, I don't want to spend lots of money on it. Do you believe this problem could likely be fixed for minimal $$$?
- I just had my brakes done (new pads, rotors, etc), would this have affected anything?
- also, my rear antilock brake light has been on for a number of months as well...is this related?....what is the problem here?...
Please help me !
Even worn on one end vs the other?
Try backing up slowly and then slip the transmission into neutral while still moving slowly. If that doesn't work try the same thing forward.
My 92 Jeep starting doing that with new tires on the rear and 20K wear on the fronts, The above procedure solved the problem each time.
Oh, just thought.
The anti-lock indication could be for the same reason, different rotation rates, continually, front vs rear would put the anti-lock ECU out of service.
...but I will give your suggestion a try...will let you know...tks !
The slip yoke requires regular lubing. The thump indicates the slip yoke is not lubed or is otherwise sticking.
Mechanically it doesn't hurt anything except your ears maybe.
The reason it doesn't do it in Neutral is because you are not creating the drive stress on the driveshaft to create enough axle wind up in the first place.
I would also double check your suspension - that a spring or shock bolt is not loose.
Of course it could be something else but that is the absolute most common source of the noise as has been described.
It is very easy to create that thump in any solid rear axle vehicle, new or used. Come to a fast stop and keep your foot on the brake. When you let go of the brake, thump. The wind up is released.
HTH if you're having this problem.
At any rate, you are correct it is often the issue and requires nothing more than a couple squirts of grease in the fitting.
IdahoDoug
it is ok to drive on dry pavement. matter of fact, the manual recommends driving at least 10 miles a month in 4wd no matter where you are to keep the front end lubed up.
Yes, it is safe to leave it in 4WD all the time. In fact, the V8 will not even let you shift into 2WD.
I think I've posted my mode-changing experience here before; it usually takes 3-8 seconds, and I've even been able to do it several times while stopped. I'm with cliffy1 (he always knows a bunch about these things), if the change takes minutes to happen on a flat surface you've got a problem.
1. Brake lightly (press and let go; repeat a few times)...this will engage the 4wd system, OR
2. Shift into Neutral and then back to Drive; repeat if necessary.
This above procedure applies to the center diff lock too (to disable VSC and de-throttle intervention). Once VSC is disabled, you CAN spin your wheels to get out!
It understand that with the AWD you ALWAYS have the benefit of a 4x4. The dealer said the Lexus LX it has a 4x4 mode too but that was when you were "stuck in mud and you are limited to about 15 mph" (seems like this is some sort of low gear mode).
The Sequioa is normally in 2 wheel mode (rear wheel drive - which I am assuming is less safe than the FWD volvo station wagon we will be replacing) and then you switch to 4x4 when you need it.
Please help me understand the net-net pros and cons of a part-time 4x4 vs. an AWD. Given my scenerio of not really going "off-road" is there an obvious advantage? I'm guessing it is cheaper to offer a part-time 4x4 rather than a AWD but not sure why since you could just leave the Sequioa in 4x4 mode all the time? thanks
AS I've said many times, if you wish to manuver around on hard packed snow in a ski parking lots the very best solution is a really good set of tire chains, the easier to install and remove all the better.
I don't ski that much anymore but it would be hard to recount the number of times I have seen road-going (snowcats NOT!) vehicles of all types stuck trying to get up even the slightest incline in these areas.
If you're virtually stopped, no momentum for help, and all four wheels are on a slippery surface, being able to drive all four will be of little help.
Low range only: With the center diff'l locked, the ABS, Anti-skid Braking System, MUST be disabled since it cannot function. Therefore it makes a lot of sense for Toyota to restrict the use of 4WD in this manner.
I would never buy one due to the over-size overweight for my purposes but I would definitely prefer the Sequoia's drive system over the RX.
BTW, how much is APR rates if my credit is 758? My uncle said about 4% but I just want to make sure before I negotiate with my dealer.
I appreciate your help!
Jen
Jen,
For pricing, take a look at all the information here on Edmund's rather than asking one of us to look it up. Sounds grumpy, I know, but still......the entire sight was constructed around pricing information for new and used cars.....
IdahoDoug
Begging your pardon, but I know of no winter tire, absent studs, that will get you up and going on a slight incline in most ski area parking lots with hard packed snow.
If you need videos I can probably arrange that.
Spreading the traction needed to gain forward momentum across four contact surfaces will indeed increase the probability of moving forward, but not if the total traction equation doesn't equal the force applied to move the vehicle.
Steve, Host
(powder week - yee haw! - studs <g>)
I just came back from the dealer and he said he'll sell it to me for $21,500. Destination fee included, I just have to add taxes.
Do you think $21,500 is a good price to pay?
BTW, would you know how much the % APR would be? I have excellent credit. Just want to ask her first so I don't get ripped off.
Jen
In AWD mode engine torque is delivered equally to all four tires provided all four have roughly equal traction, high or low. The problem with open diff'l is that they, you have three in AWD mode, will route ALL engine torque to a single slipping wheel.
That's where Trac is supposed to step and provide "virtual" traction to the slipping wheel/tire.
I would expect that Trac would still be operative in 2WD (RWD) mode to provide "virtual" LSD capability for the otherwise open rear diff'l.
IdahoDoug
AS far as ski parking lots. Had a 84 Front WD honda, never got stuck, never could not go anywhere I wanted to in a ski parking lot. I used to drive 400 miles on the weekends in the winter in montana on hard packed snow at 70mph, along with everyone else, never had a problem there either. If you race an engine, tires spin, go slow and you will go.
-Reed
As for slipping on snow... I live in Colorado so I have a set of chains for my front tires that I have never used, just be smart and keep your momentum stable and you will be just fine, no abrupt moves, and give your self plenty of space. (not as much if you are in a lighter car than my 2 1/2 ton rig)
HiC
HiC
I'm seriously considering the highlander as my next vehicle, although, I'll probably wait for the hybrid version. Anyway, I can't decide if the AWD is worth the extra $ and decrease in mpg. I was thinking this is probably one more thing that could go wrong and/or require regular maintenance. Is this true.
I live in the Washington DC area so I don't do any off-road driving.
I plan to own this vehicle for 8+ years or so.
Thanks in advance!
Jack
As for the 100 series, thanks for clearing that up
The basic Australian Landcruiser is available with a locking front and rear differential as an Option Pack. frequently the diff locaks are fitted after market and tend to be air lockers supplied by ARB or similar. They are extremely effective if you ever need to lock all four wheels to the ground for purposes such as winching a tree down,
http://www.lc100.toyota.com.au/LC100/InDetail/Specifications/1,12- - 89,133---123^81,00.html
Cheers
Graham
Haven't seen any reports of reliability issues with HL AWD. Mileage decrease for AWD seems to be 1-2 mpg on the V6. HL is supposedly available in AWD with the 4-cyl., but haven't seen many that actually have this config. Any 4-cyl. AWD HL folks around that can report on mpg?
Mike
Short of that I don't think you can tow a full time 4wd with two wheels still on the ground let alone all four.
"Notice: Do not tow your vehicle with four wheels on the ground. This may cause serious damage to your vehicle."
I honest have no idea why this is the case. The Runner is not anything like the RAV4 and its 4WD system can be totally disengaged. The RAV4 and most AWD vehicles can't do this. The manual does not make any distinction between the V6 and the V8 in this section so there is something beyond the conventional wisdom going on here. Nor do they make a distinction between 2 and 4WD models.