[Bobbo756]

I have a question about regenerative braking while driving in snow. I have my eye on a RWD model. My assumption is that regenerative braking only operates on the wheels which have a motor attached to them. Just like pulling the handbrake on a standard car, I would imagine that braking with the rear wheels in the snow would cause the back end to spin out. Does the ID4 have a system to either match the rear braking force with equivalent hydraulic braking in the front? If not, does the driver assist automatically cut out the regen braking when it senses the wheels slipping? Does it have a specific snow and ice driving mode?

 

[mlsstl]

First, you can always use the "D" mode which doesn't do regen unless you intentionally press on the brake pedal. Second, when you do press the brade pedal, regen is initially just a substitute for the brake pads pressing against the rotors. I would not expect the car to behave any differently than a conventional RWD ICE car when the brakes are pressed. I find the integration between regen and the brake pad action very well done. Finally, there are some videos out of an ID4 being driven in the snow and it seems to do quite well.

 

[Spin]

I would definitely use D in slippery conditions and I'm sure the anti-lock brakes will work fine.

 

[dg4prez]

First, you can always use the "D" mode which doesn't do regen unless you intentionally press on the brake pedal. Second, when you do press the brade pedal, regen is initially just a substitute for the brake pads pressing against the rotors. I would not expect the car to behave any differently than a conventional RWD ICE car when the brakes are pressed. I find the integration between regen and the brake pad action very well done. Finally, there are some videos out of an ID4 being driven in the snow and it seems to do quite well.

D absolutely uses regen in some driving modes. I don't know that it does in comfort, but I'm pretty sure eco and sport it does. Just less of it than B.

 

[Fahrer]

Perhaps someone with more knowledge than me on this can comment but I would imagine that the ABS and stability control systems would limit or stop regeneration activity if the rear wheels begin to slip in snow or wet roads with or without the driver applying the brake pedal.

 

[Bobbo756]

Hi All, thanks for the responses. I figured that VW probably had a system in place as to controlling the backend during regen in slippery conditions. I didn't want to take a chance on it without asking first though. Thanks.

 

[VW TECHNICIAN]

ID4 use ZF automated braking system that has couple safety features incorporated in one system and even in B mode it will operate in most extreme conditions......black ice...and onboard motor inverter has capacity to adjust torque and slipping in milliseconds.
That is how powerful EV propulsion units have extreme acceleration without a lot of slipping or tire burning while accelerating. Because they are quicker or on pair with ABS control response. VW RWD is amazing peace of engineering.

 

[mlsstl]

D absolutely uses regen in some driving modes. I don't know that it does in comfort, but I'm pretty sure eco and sport it does. Just less of it than B.

Can't say I've noticed that. When I drive in D and let up on the accelerator, my car simply coasts. Only when I push on the brake pedal do I get any regen, which "feels" just like one was braking lightly.

 

[Tinman]

Can't say I've noticed that. When I drive in D and let up on the accelerator, my car simply coasts.

I hadn't noticed it either. I want to coast when I'm in D, and it's been that way. This was my excuse to go for a drive today.

dg4prez is correct. I didn't finish figuring out which setting does what. It started monsooning and traffic went crazy.

 

[mlsstl]

I did something radical -- I checked the owners manual. It says that in D mode, it only does regeneration if you lift up on the accelerator pedal when the car is set to Eco mode. The Comfort and Sport modes simply coast. Can't say I've ever tried the Eco mode which would explain my experience.

 

[Huey52]

Eco mode has the lowest torque and therefore would be best for snowy driving as you want to avoid spinning the wheels.

 

[JD.4]

Can't say I've noticed that. When I drive in D and let up on the accelerator, my car simply coasts. Only when I push on the brake pedal do I get any regen, which "feels" just like one was braking lightly.

Just FYI/passing on information. The drive mode resets to comfort with each start even though the screen shows your last selection. There's no indication it has reset. I drove around for two weeks thinking I was in sport mode (later found out that sport mode does have light regen when letting off the accelerator but comfort does not)