Electronic brake booster in the 100?

[ShottsUZJ100]

OK, this is not meant to be an 80 vs 100 thread ( ;p ), but I discovered something today by accident that I felt was pertinent.

My mechanic was greasing my zerks. First up was the 80. During greasing he asked me to get into the car, put it in N and let it coast down his driveway so he could reach the other zerks.
After the first couple a pedal pushes the braking power ceased and the pedal then took a huge amount of force to stop the thing from rolling. This is what I've experienced with EVERY vehicle I have ever owned and thought nothing of it.

Then it was the 100s turn. In N, coasting down the drive I had FULL braking power. THEN, AFTER A FEW PUSHES, we heard a sound, the brake pedal vibrated a tiny bit then stopped. We noticed the braking system automatically re-powering itself even with the motor off. AMAZING!
We then kept coasting it down the hill and had constant brake power as if the motor was running. COOL!

Here's my 1st question: Is this safety feature common in other newer vehicals?

Here's my 2nd question: In an off-road situation, should the motor stall (either going forward or reverse..and it's happened...or, running out of gas even?) a 100-series would still have full braking, therefore safety is greatly enhanced. Does anybody know how long this "auto assist" can continue with the motor off? Ever heard of this?

 

[wob]

The 100 needs it because if the truck were to roll into something while coasting with the engine off, the wife in the passenger seat would spill her red wine, and the driver would be burned by his moccachino. The resulting lawsuit would greatly hurt Toyota's reputation around the country clubs.

 

[ShottsUZJ100]

The 100 needs it because if the truck were to roll into something while coasting with the engine off, the wife in the passenger seat would spill her red wine, and the driver would be burned by his moccachino. The resulting lawsuit would greatly hurt Toyota's reputation around the country clubs.

Hee hee. I notice there is no 100 on your signature.

After this post I drove down a brand new road (construction going on there) at 45MPH, killed the motor and had full brake control until I stopped a minute+ later. I'm amazed by this. I'd guess this is the standard now in higher $$$ cars/trucks? Seriously? That's a huge safety factor. Or is this 100 technology only?

Ignore WOB. He's having brunch with most 100 owner's wives.

Anybody know of another vehicle like this?

 

[NMuzj100]

I'd answer that last 100 bash but my butler just brought my moccachino and I'm late to see my broker.

 

[Jim_Chow]

This is a solution to a problem that wouldn't exist had the 100 been availble w/ manual (esp. a manual diesel) like overseas. So what do you do if your battery dies, then the alternator overheats powering all those accessories?

 

[ShottsUZJ100]

Hee Hee Jim. NMuzj100...I'm jealous. I don't have a butler.

So I appears that nobody has ever heard of this in a vehicle? No sports cars. No Mercedes trucks/SUVs? Is this an exclusive safety feature to the 100?

Anybody out there will and GX470 or V8 4Runner: Try the above scenario and report back?

 

[trw]

Electronic vacuum is common in hot rods and big cam motors for street only rides. Can't use any boost if its going to the track, must have dual manual mc's, which in my opinion is the best setup for any performance or offroad vehicle. Haven't heard of it on any standard vehicle although it is a nice feature to have.

 

[Jim_Chow]

I guess one good thing about the good ol' fashioned booster is, in my 86 4-cyl runner, I was able to greatly increase braking power by swapping in a much larger V6 booster salvaged from a wrecked '91 V6 mini (this was after adding a FJ80 master, braided stainless hoses, slotted brembo rotors, and carbon pads, but still using the stock 4 cyl calipers and rear drums). Another advantage is, the master cylinder is probably more likely to fail over the life of the rig than the booster, so in a 80 or mini, you just pay $130 for a Aisin FJ80 master. With the 100, you have to buy that pump/master from the dealer, so like $1200. That chunk of change could buy f/r OME springs/shocks plus ARB winchbar!

 

[ShottsUZJ100]

With the 100, you have to buy that pump/master from the dealer, so like $1200. That chunk of change could buy f/r OME springs/shocks plus ARB winchbar!

That lift won't help ya if you're dead from no braking power.

OK, seriously....is that the secret on the 100? That huge $1200 MtrCyl? All the techo/electronic boost is in there?

 

[NMuzj100]

For $1200 there should be some kind of magic in there!

 

[ShottsUZJ100]

For $1200 there should be some kind of magic in there!

I'm dying to know if ANY other production vehicle currently offers this same safety technology?

 

[medtro]

This is a solution to a problem that wouldn't exist had the 100 been availble w/ manual (esp. a manual diesel) like overseas.

Why?

 

[Jim_Chow]

Why?

'Cause you'd be in low gear (like 4.8 1st gear w/ the H-series 5spd tranny) letting the engine do the slowing down downhill, and get the vehicle going slow enough so you might be able to actually use the hand brake to come to a final stop. If it were diesel, the higher compression ratio would allow you to go even slower in low gear.

 

[ShottsUZJ100]

Nice try, not the same thing James. Run out of gas and let's see ya stop quickly. Stall it climbing a hill and when it heads backward let's see ya stop it?

 

[mabrodis]

I too was shocked to find a electronic brake dohickie on my sister's '99 Cruiser. I was bleeding the brakes, first one went fine (key off, etc)...2nd tire was getting no pressure, I figured started it would help, she turned the key to on and I heard a sound, she started it and I had her shut it off. Looked around and I had never noticed, no vacuum booster. I'm like wow, that's cool, so just left the key on "ON" and bled all the brakes great.

Kinda a cool setup I think, if it was from any other company I'd be wary of it failing and having bad brakes, but that doesn't seem to fail alot, and if it died, it'd be no worse than a vacuum one having a broken seal or a broken vacuum line, etc.

John, as a good test, do the same road thing you did before, only this time make sure you're going straight (and no cars around) and shut of the key entirely (oh wait did you already do that?), heck even remove the key, I don't think the electronic brake thing works then, so it'd be interesting to see how hard the braking is then.

 

[ELLTEE]

Don't know about production automobiles, but the Gehl turbo diesel heavy forklift I was using last week had the same electronic booster.
LT

 

[cruiserdan]

For $1200 there should be some kind of magic in there!

Guess again fellas...



47050-60042, $1,819.69

 

[mabrodis]

Guess again fellas...
47050-60042, $1,819.69

Yeah, but have you ever had to replace one? (please say no)

That's alot, wow!!

 

[medtro]

'Cause you'd be in low gear (like 4.8 1st gear w/ the H-series 5spd tranny) letting the engine do the slowing down downhill, and get the vehicle going slow enough so you might be able to actually use the hand brake to come to a final stop. If it were diesel, the higher compression ratio would allow you to go even slower in low gear.

None of these help with the greasing drive shafts on driveway situation

So you still need this wonderful brake master if you have a diesel manual tranny and want to grease your drive shafts

 

[medtro]

Yeah, but have you ever had to replace one? (please say no)

That's alot, wow!!

Check this out