100 series v8 landcruiser cruise control probs.

it does not matter if they know or dont know...

its under warranty so tell them to find out how to fix it!!

I have a problem also with my 100 series TD cruise control . If I go up a long hill with my camper trailer in tow and the speed drops to around 80 kph , the engine cuts out - dead as a dodo .
I then have to pull off the road , put it into neutral and start again . I don't know if that is some kind of built in cut out or what .

I am an absolute idiot re things mechanical , so I am no use trying to solve your problem . If you get no answers here , you should go to the toyota club site - it's www.lcool.org - they will definitely be able to help you .

Cheers ,

Willie

It sounds like the same unit as in the LX470.

You can be cruising along around a bend going up hill and it suddenly kicks back a cog, accelerates wildly and if you weren't used to it, could be very dangerous.

On hills it never uses the engine's torque - always drops back a cog, revs its head off, then holds that gear for a prolonged time on the down side of the hill.

I raised this with Lexus and they said that they are just like that.

As a piece of design it is uncomfortable, unsafe, uneconomical, and one of the weakest parts of the whole vehicle.

Interesting guys as my third party electronic Cruise does the same thing with the Surf...
I always drop it into power mode when driving loaded on the highway anyhow so as to not over heat the tranny which in turn will over heat the engine (oil cooler in bottom of radiator).

I found by turning the overdrive OFF before I hit a long hill the cruise will rev, but about 300rpm less, as when the overdrive is off the torque lock is engaged. works for me. Might work on the mighty 100.

But yeah, my cruise doens't muck about either, it has no problems dumping the plastic to the carpet!
Good somtimes, not so much on a windy hilly stretch of road. But if you leave the O/D off in those sections it has no need to kick back.

On the other side though it can engine brake with the auto much better than I can decending long hills, not sure how it does it but it keeps the gearbox engaged instead of letting the revs drop back to idle. I've experimented with it too, if I try the car just idles down the hill picking up speed but the cruise will hold the speed and keep the revs up.

I've been waiting for someone to post on this issue ... I was hopeing that it was'nt just my 2003 120 Prado doing it. It must be the same cruise unit on all late model Toyota's. The first time it did it on me was while towing my van up a long steep incline, scared the bejesus out of me. 2000 revs to 5500 and two gears down certainly gets the motor turning. It ca'nt be good for it. I now do as, switch it off on any steeper hills, and do'nt have any problems holding power. Very strange that Toyota ca'nt find a fix.
Bazza.

Mine's the same. Seems to be a design flaw rather than a defect... be nice if it could be adjusted

Shane

Mine's the same. Seems to be a design flaw rather than a defect... be nice if it could be adjusted

Shane