What does this button do?
Instructor
Joined: Apr 2021
Posts: 239
Likes: 93
From: Cumming, GA
Porsche Hill Control (PHC) -
Porsche Hill Control is an assistance system that helps the driver when driving slowly downhill at speeds of between approx. 2 mph (3 km/h) and 20 mph (30 km/h), e.g. on steep slopes or on wintry mountain roads, both when driving forward and reversing.
The system limits the speed by braking on all four wheels. ABS remains active to prevent the wheels from locking.
On vehicles with manual transmission, the system adapts the speed in such a way that the engine is not braked at idle speed.
Like all brakes, the braking ability of Porsche Hill Control is impaired on slippery surfaces (e.g. on icy roads or loose surfaces).
WARNING - Slippery Roads
Reduced braking ability on a slippery surface.
Always adjust your driving style to the driving situation.
Preconditions:
– PHC is on.
– The speed must not exceed approx. 20 mph (30 km/h).
– The gradient must be at least approx. 12 %.
– The driver does not accelerate or brake.
Online User Manual - https://forporsche.com/porsche-cayen...ual-2011-2017/
Porsche Hill Control is an assistance system that helps the driver when driving slowly downhill at speeds of between approx. 2 mph (3 km/h) and 20 mph (30 km/h), e.g. on steep slopes or on wintry mountain roads, both when driving forward and reversing.
The system limits the speed by braking on all four wheels. ABS remains active to prevent the wheels from locking.
On vehicles with manual transmission, the system adapts the speed in such a way that the engine is not braked at idle speed.
Like all brakes, the braking ability of Porsche Hill Control is impaired on slippery surfaces (e.g. on icy roads or loose surfaces).
WARNING - Slippery Roads
Reduced braking ability on a slippery surface.
Always adjust your driving style to the driving situation.
Preconditions:
– PHC is on.
– The speed must not exceed approx. 20 mph (30 km/h).
– The gradient must be at least approx. 12 %.
– The driver does not accelerate or brake.
Online User Manual - https://forporsche.com/porsche-cayen...ual-2011-2017/
Thread Starter
Rennlist Member
Joined: Aug 2002
Posts: 3,772
Likes: 965
From: San Antonio, Texas
Porsche Hill Control (PHC) -
Porsche Hill Control is an assistance system that helps the driver when driving slowly downhill at speeds of between approx. 2 mph (3 km/h) and 20 mph (30 km/h), e.g. on steep slopes or on wintry mountain roads, both when driving forward and reversing.
The system limits the speed by braking on all four wheels. ABS remains active to prevent the wheels from locking.
On vehicles with manual transmission, the system adapts the speed in such a way that the engine is not braked at idle speed.
Like all brakes, the braking ability of Porsche Hill Control is impaired on slippery surfaces (e.g. on icy roads or loose surfaces).
WARNING - Slippery Roads
Reduced braking ability on a slippery surface.
Always adjust your driving style to the driving situation.
Preconditions:
– PHC is on.
– The speed must not exceed approx. 20 mph (30 km/h).
– The gradient must be at least approx. 12 %.
– The driver does not accelerate or brake.
Online User Manual - https://forporsche.com/porsche-cayen...ual-2011-2017/
Porsche Hill Control is an assistance system that helps the driver when driving slowly downhill at speeds of between approx. 2 mph (3 km/h) and 20 mph (30 km/h), e.g. on steep slopes or on wintry mountain roads, both when driving forward and reversing.
The system limits the speed by braking on all four wheels. ABS remains active to prevent the wheels from locking.
On vehicles with manual transmission, the system adapts the speed in such a way that the engine is not braked at idle speed.
Like all brakes, the braking ability of Porsche Hill Control is impaired on slippery surfaces (e.g. on icy roads or loose surfaces).
WARNING - Slippery Roads
Reduced braking ability on a slippery surface.
Always adjust your driving style to the driving situation.
Preconditions:
– PHC is on.
– The speed must not exceed approx. 20 mph (30 km/h).
– The gradient must be at least approx. 12 %.
– The driver does not accelerate or brake.
Online User Manual - https://forporsche.com/porsche-cayen...ual-2011-2017/
Instructor
Joined: Jun 2024
Posts: 131
Likes: 31
I used it this weekend for the first time, coincidentally.
I was disappointed to find out it was simply burning up my pads and rotors. I had until then imagined it was some advanced software downshifting and revving the engine.
I was disappointed to find out it was simply burning up my pads and rotors. I had until then imagined it was some advanced software downshifting and revving the engine.
Racer
Joined: Feb 2025
Posts: 281
Likes: 83
From: Sherwood Oregon
It's a bonus feature at best. I have a proper off-road vehicle and hill descent is low range in 2nd. These are not serious off-road vehicles, don't care what anyone says. It's a tall sports car with 4wd. And that's just fine.
