Hill Holder Question

[Poster]

Hi,
I'm curious to know. Let's say when I'm at the bottom of a hill, I start my
Forester in 1st gear and of course the hill holder will kick in to hold the
car until I release the clutch. However, when I depress the clutch again to
change to 2nd gear and I'm still climbing the hill, will the hill holder
kick in when depress the clutch?


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[Mike]

No, beacuse you are not using the brakes.

 

[H]

The Hill Holder works by holding the brake-fluid pressure that you applied
in the system as long as the clutch is held in , thereby keeping brakes
engaged. The Hill Holder does not apply the brakes. Once the brake-fluid
pressure is released, either by the Hill Holder valve or by letting the
brake pedal up in normal situation, you must re-pressurize the system with
the brake pedal.

 

[Mark H]

The Hill Holder works by holding the brake-fluid pressure that you applied

in the system as long as the clutch is held in , thereby keeping brakes
engaged. The Hill Holder does not apply the brakes. Once the brake-fluid
pressure is released, either by the Hill Holder valve or by letting the
brake pedal up in normal situation, you must re-pressurize the system with
the brake pedal.

So why doesn't the same apply when you're rolling to a stop?
If I put the clutch in and select neutral when coming down to a set of
lights, apply brakes, and then release the brakes while still holding in the
clutch, why doesn't my car continue to brake? Safety feature?

-mark

 

[Sparky Polastri]

So why doesn't the same apply when you're rolling to a stop?
If I put the clutch in and select neutral when coming down to a set of
lights, apply brakes, and then release the brakes while still holding in
the
clutch, why doesn't my car continue to brake? Safety feature?

-mark

The hill holder is sensitive to inclination of the vehicle.

See archives of this group, a link was posted that covered engineering of
the device in detail. Probably about 2 - 4 weeks ago.

 

[Mike]

Hill holder also need a minimum brake pressure.

So why doesn't the same apply when you're rolling to a stop?
If I put the clutch in and select neutral when coming down to a set of
lights, apply brakes, and then release the brakes while still holding in
the
clutch, why doesn't my car continue to brake? Safety feature?

-mark

 

[Fuzzy Logic]

The hill holder is sensitive to inclination of the vehicle.

See archives of this group, a link was posted that covered engineering of
the device in detail. Probably about 2 - 4 weeks ago.

Here you go:

http://www.drive.subaru.com/Spr03_HillHolder.htm

 

[Wilco van Diest]

I'm just curious, where under the hood can I this this nifty piece of
technologie?
Near the proportion valve or brake-booster or ? (photo ? ;-) )

Wilco

 

[Rob Munach]

So why doesn't the same apply when you're rolling to a stop?
If I put the clutch in and select neutral when coming down to a set of
lights, apply brakes, and then release the brakes while still holding in the
clutch, why doesn't my car continue to brake? Safety feature?

-mark

Try rolling backwards down a hill and then touch and release the brakes.
They will stay engaged. The hill holder requires the nose of the vehicle
to be up.

 

[pheasant]

Hi,
I'm curious to know. Let's say when I'm at the bottom of a hill, I start
my Forester in 1st gear and of course the hill holder will kick in to hold
the car until I release the clutch. However, when I depress the clutch
again to change to 2nd gear and I'm still climbing the hill, will the hill
holder kick in when depress the clutch?

A Studebaker invention from the 50's!!!!

Still amazes me that only Subaru picked up on it. Replaced my 86 GL's last
summer, was leaking, thought about taking it out, but boy; they sure spoil
you when it comes to hills.