Sensitivity of emergency brake at low speeds?

[Nick72]

In for a shock last night. Reversed up our sloping curved drive and the brake warning flashed up then it anchored on by itself.

Nothing behind the car and still 3m from the wall of the house.

Only thing I can think of was we have some tall willowy grasses and the sensor detected a few strands blowing about.

Anyone got any experience?

What's the system called that does this and is there a way to make it less sensitive?

Thanks

[Cyker]

PCS/Pre-Collision-system, and if you have proximity sensors it can be very paranoid at low speeds.

Mine screams at me on the A406 when I'm in stationary traffic sometimes as there's some tall grass that sometimes blows in front of it, tripping the sensors  

If I'm moving they are too narrow and brush past too fast for it to notice thankfully.

It makes parking in tight spaces much harder than in my old cars, as I have to move super slow (The speedo literally reads 0mph  ) to not spook the sensors - If I move faster it'll slam on the anchors thinking I'm going to crash!

[Nick72]

42 minutes ago, Cyker said:

PCS/Pre-Collision-system, and if you have proximity sensors it can be very paranoid at low speeds.

Mine screams at me on the A406 when I'm in stationary traffic sometimes as there's some tall grass that sometimes blows in front of it, tripping the sensors  

If I'm moving they are too narrow and brush past too fast for it to notice thankfully.

It makes parking in tight spaces much harder than in my old cars, as I have to move super slow (The speedo literally reads 0mph  ) to not spook the sensors - If I move faster it'll slam on the anchors thinking I'm going to crash!

Damn. 

I wonder if there's an option to deliver sensitise it or just turn it off.

[Nick72]

46 minutes ago, Cyker said:

PCS/Pre-Collision-system, and if you have proximity sensors it can be very paranoid at low speeds.

Mine screams at me on the A406 when I'm in stationary traffic sometimes as there's some tall grass that sometimes blows in front of it, tripping the sensors  

If I'm moving they are too narrow and brush past too fast for it to notice thankfully.

It makes parking in tight spaces much harder than in my old cars, as I have to move super slow (The speedo literally reads 0mph  ) to not spook the sensors - If I move faster it'll slam on the anchors thinking I'm going to crash!

Looked up PCS.

Seems there's two systems.

PCS and PKSB Parking Support Brake System.

You can desensitise the PCS although it sounds like it's just telling you later.

You can switch off the PKSB. Which is what I'll be doing as that ain't going to work out well driving past the overhanging grass, ferns, and over the long grass around the mountains.