5 ms·

Since the original citation was for a Subaru, it made me wonder how Subaru's X-Mode actually works. It says, among other things: X-MODE in Subaru vehicles is

by nkurz 2y ago

Since the original citation was for a Subaru, it made me wonder how Subaru's X-Mode actually works. It says, among other things: X-MODE in Subaru vehicles is specifically engineered to push through tough conditions like snow and mud. By adjusting the throttle response and controlling the transmission, it ensures that power is distributed effectively to the wheels, reducing slip and enhancing grip. https://www.subaru.com/vehicle-info/articles/what-is-subaru-x-mode.html https://www.subaru.com/vehicle-info/articles/what-is-subaru-... Does anyone know what it actually does and how well it does it?

bryanlarsen 2y ago
https://en.wikipedia.org/wiki/Limited-slip_differential https://en.wikipedia.org/wiki/Limited-slip_differential is the general answer, I believe. Interesting reading whether it's the correct answer or not. The section labelled "electronic" is probably more applicable to the Subaru.
rasz 2y ago
On something like Forester snapped CV/Half Shaft Axle means car wont move.
foobarbecue 2y ago
It's so wild how consumer products don't disclose the basics of how they work to their customers any more.
- darby_nine 2y ago
  Yes they do. User manuals just don't make for very good marketing.
  - eigen 2y ago
    >> consumer products don't disclose the basics of how they work to their customers > Yes they do. User manuals just don't make for very good marketing. user manuals tell you how to do something, not how it works. E.G. a motherboard user manual tells you how to enter BIOS Setup, not how secure boot works; where to set USB power output in system power states, not what the power states are and how they transition. https://www.asus.com/us/supportonly/a320m-c/helpdesk_manual/ https://www.asus.com/us/supportonly/a320m-c/helpdesk_manual/
    - shiroiushi 2y ago
      We need to go back to the 1960s/1970s, where Tektronix oscilloscopes and other such equipment came with user manuals that had detailed explanations of how the electronics worked. https://w140.com/tekwiki/wiki/Main_Page https://w140.com/tekwiki/wiki/Main_Page https://bama.edebris.com/manuals/tek https://bama.edebris.com/manuals/tek As an example, check out the user manual (not the repair manual, though that's available on this site too) for the popular Tektronix 465, and scroll down to the "Circuit Description" section: https://bama.edebris.com/download/tek/465/465_v6.pdf https://bama.edebris.com/download/tek/465/465_v6.pdf
- Dalewyn 2y ago
  I'm sympathetic to the reason why: Most people don't read. It's wasted work to write elaborate manuals. Also, many people are busy. Very busy. Even if someone wanted to read, he's way too tired to immerse in new knowledge. Source: Me. I simply have neither the time nor the energy to bother with learning anymore unless there's a very good reason to.
  - red-iron-pine 2y ago
    cars are a comparatively rare purchases, that costs a ton of money, and that has life-ending safety risks. Read the book. If you don't read the microwave's instructions and don't understand how 50% defrost power works chances are it's not going to permanently cripple you, or lead to $10k's in liability and repairs.
    - Dalewyn 2y ago
      >cars are a comparatively rare purchases, that costs a ton of money, and that has life-ending safety risks. Read the book. No. Ain't nobody got the time. Operating a car safely doesn't require reading through a 2 inch thick tome every time you buy a car. I thought I did when I was still a sweet summer child, reading every manual within reach and being told "How do you know that????" by every adult around me. That felt good. I'm an adult now. Ain't nobody got the time. I know nothing; as in the third stage, not the first stage. I will ask the nearest kid "How do you know that????" and save myself the time and energy if I must learn. The very first car you buy? Okay, sure, read through the tome since you have nothing to build on. But second car onwards? Ain't nobody got the time. What? You're trying to tell me I don't know what the fuck Subaru X-Mode is? You're bold to assume I would even use Subaru X-Mode. That button isn't getting pressed for the life of the car ownership; users by and large do not change defaults and hate having dials and buttons to mess with, and I am slowly but surely becoming one of them. Ain't nobody got the time. But at least I don't suffer from a bad case of acne anymore.
      - foobarbecue 2y ago
        You sure do seem like a busy person with no time for frivolous pursuits
kube-system 2y ago
> Often our instinct is to apply more power to the accelerator when we are stuck in ice, snow, or mud. Unfortunately, this can deliver too much torque at once, resulting in the throttle opening up too quickly and creating rapid wheelspin with no traction. With X-MODE activated, the engine will deliver torque gradually Translation: If you punch the throttle and it's slippery, the throttle is going to ignore you just a little bit. > Subaru vehicles improve on the already outstanding AWD system by increasing the front/rear coupling force, splitting power more evenly between the front and rear sets of tires. Translation: limited slip center differential. It'll mechanically send power more-or-less evenly to the front and the back of the car. > With X-MODE in use, the Vehicle Dynamics Control (VDC) system provides enhanced Limited-Slip Differential (LSD) control. This means that braking is applied much faster and only to the wheels that need it most because they are slipping or spinning without traction. Translation: For slippage from left-to-right, the traction control system will brake the wheel that is spinning, thus encouraging the power to be used at the wheel that is gripping the road, rather than being wasted spinning a tire.
SkyPuncher 2y ago
If it’s anything like my Hyundai, it uses brakes to slow loose wheels. It works amazingly well for snow (which is all I’ve tried it in).

by nkurz 2y ago

bryanlarsen 2y ago

https://en.wikipedia.org/wiki/Limited-slip_differential https://en.wikipedia.org/wiki/Limited-slip_differential is the general answer, I believe. Interesting reading whether it's the correct answer or not. The section labelled "electronic" is probably more applicable to the Subaru.

rasz 2y ago

On something like Forester snapped CV/Half Shaft Axle means car wont move.

foobarbecue 2y ago

It's so wild how consumer products don't disclose the basics of how they work to their customers any more.

darby_nine 2y ago
Yes they do. User manuals just don't make for very good marketing.
- eigen 2y ago
  >> consumer products don't disclose the basics of how they work to their customers > Yes they do. User manuals just don't make for very good marketing. user manuals tell you how to do something, not how it works. E.G. a motherboard user manual tells you how to enter BIOS Setup, not how secure boot works; where to set USB power output in system power states, not what the power states are and how they transition. https://www.asus.com/us/supportonly/a320m-c/helpdesk_manual/ https://www.asus.com/us/supportonly/a320m-c/helpdesk_manual/
  - shiroiushi 2y ago
    We need to go back to the 1960s/1970s, where Tektronix oscilloscopes and other such equipment came with user manuals that had detailed explanations of how the electronics worked. https://w140.com/tekwiki/wiki/Main_Page https://w140.com/tekwiki/wiki/Main_Page https://bama.edebris.com/manuals/tek https://bama.edebris.com/manuals/tek As an example, check out the user manual (not the repair manual, though that's available on this site too) for the popular Tektronix 465, and scroll down to the "Circuit Description" section: https://bama.edebris.com/download/tek/465/465_v6.pdf https://bama.edebris.com/download/tek/465/465_v6.pdf
Dalewyn 2y ago
I'm sympathetic to the reason why: Most people don't read. It's wasted work to write elaborate manuals. Also, many people are busy. Very busy. Even if someone wanted to read, he's way too tired to immerse in new knowledge. Source: Me. I simply have neither the time nor the energy to bother with learning anymore unless there's a very good reason to.
- red-iron-pine 2y ago
  cars are a comparatively rare purchases, that costs a ton of money, and that has life-ending safety risks. Read the book. If you don't read the microwave's instructions and don't understand how 50% defrost power works chances are it's not going to permanently cripple you, or lead to $10k's in liability and repairs.
  - Dalewyn 2y ago
    >cars are a comparatively rare purchases, that costs a ton of money, and that has life-ending safety risks. Read the book. No. Ain't nobody got the time. Operating a car safely doesn't require reading through a 2 inch thick tome every time you buy a car. I thought I did when I was still a sweet summer child, reading every manual within reach and being told "How do you know that????" by every adult around me. That felt good. I'm an adult now. Ain't nobody got the time. I know nothing; as in the third stage, not the first stage. I will ask the nearest kid "How do you know that????" and save myself the time and energy if I must learn. The very first car you buy? Okay, sure, read through the tome since you have nothing to build on. But second car onwards? Ain't nobody got the time. What? You're trying to tell me I don't know what the fuck Subaru X-Mode is? You're bold to assume I would even use Subaru X-Mode. That button isn't getting pressed for the life of the car ownership; users by and large do not change defaults and hate having dials and buttons to mess with, and I am slowly but surely becoming one of them. Ain't nobody got the time. But at least I don't suffer from a bad case of acne anymore.
    - foobarbecue 2y ago
      You sure do seem like a busy person with no time for frivolous pursuits

kube-system 2y ago

> Often our instinct is to apply more power to the accelerator when we are stuck in ice, snow, or mud. Unfortunately, this can deliver too much torque at once, resulting in the throttle opening up too quickly and creating rapid wheelspin with no traction. With X-MODE activated, the engine will deliver torque gradually Translation: If you punch the throttle and it's slippery, the throttle is going to ignore you just a little bit. > Subaru vehicles improve on the already outstanding AWD system by increasing the front/rear coupling force, splitting power more evenly between the front and rear sets of tires. Translation: limited slip center differential. It'll mechanically send power more-or-less evenly to the front and the back of the car. > With X-MODE in use, the Vehicle Dynamics Control (VDC) system provides enhanced Limited-Slip Differential (LSD) control. This means that braking is applied much faster and only to the wheels that need it most because they are slipping or spinning without traction. Translation: For slippage from left-to-right, the traction control system will brake the wheel that is spinning, thus encouraging the power to be used at the wheel that is gripping the road, rather than being wasted spinning a tire.

SkyPuncher 2y ago

If it’s anything like my Hyundai, it uses brakes to slow loose wheels. It works amazingly well for snow (which is all I’ve tried it in).