Steering mode

[fredgroves]

Yes, the amount of input effort vs turning achieved is shown there - ie at slow speeds it turns quicker.

The document doesn't mention the extra set of maps gained by the performance profiles in a performance golf though - those are over and above the speed based profiles - probably a different set of speed profiles.

[wooders2]

Its not hydraulic like the previous Golfs, its electrically assisted, I'd assume that means your rotational input is translated into mechanical effort by an electric motor, which allows for different steering rates vs input. Yes, the steering column is attached to something, but not directly acting on the rack. The feedback weight is controlled by the electrical motor.

Ah, looking at P16 of that PDF it looks like the steering column is still connected directly to the rack, but there's a second pinion that adds the assistance.  They say on that page:

The steering pinion transfers the steering force applied by the driver and the drive pinion transfers the assisting force from the electro-mechanical power steering motor via a worm gear.

I'm quite relieved by that.. not sure I'm ready to trust a full drive-by-wire quite yet!

[mkviken]

If the column is connected to the same driven part as the the motor then I can’t see the ratio of the rack changing

It does feel that more lock was required in comfort though at times

[cossiegaz82]

There's no way the steering can be drive by wire for safety reasons, if the car was to suffer total power failure for example, you'd be up s**t creek without a paddle. The motor is built into the rack which the steering column is attached to just like a conventional rack and pinion system.

[maxie]

There's no way the steering can be drive by wire for safety reasons, if the car was to suffer total power failure for example, you'd be up s**t creek without a paddle. The motor is built into the rack which the steering column is attached to just like a conventional rack and pinion system.

well i cant move my wheel when the engines off while stopped, not sure what would happen whilest moving though. must admit it has had me thinking what would happen before now

[wooders2]

well i cant move my wheel when the engines off while stopped, not sure what would happen whilest moving though. must admit it has had me thinking what would happen before now

Steering lock?  I think that's automatic (i.e. doesn't require a jiggle of the steering wheel to engage) judging by the icon on the dash?

[maxie]

well i cant move my wheel when the engines off while stopped, not sure what would happen whilest moving though. must admit it has had me thinking what would happen before now

Steering lock?  I think that's automatic (i.e. doesn't require a jiggle of the steering wheel to engage) judging by the icon on the dash?

i mean when the stop start system kicks in (sorry) sometime it kicks in while still moving and the  steering wheel is still solid

[fredgroves]

Yes without any power assistance, with big fat tyres,  with gearing not designed to be used without power assistance and stationary... its going to be hard work.

I drove a car without power steering a while back and had forgotten just how hard turning at slow speeds is!

[cossiegaz82]

It is pretty stiff but when on the move the resistance decreases so not as bad. Still stiff though.

When towing VW's with electric power steering, with the ignition on the power steering comes on.

[golfdave]

Besides the self study book 317 which was linked to you need to read number 521 "The Golf GTI/GTD 2013".

This explains why the GTI/GTD/R steering rack is different to the one described in the book 317...

Basically the steering rack has two sets of grooved/teeth strips on the rack..one for each pinion...the steering pinon section on the "progressive" rack (GTI/GTD/R)  has standard straight teeth on the straight ahead section in the middle, but then either side it has angled teeth....which means the rack covers a greater distance for the same input...

So standard for 60deg either side of dead ahead....then basically you input turn 360deg either side from dead ahead & get full lock ..where as on standard rack you have to input 540deg either side to get full lock...

You also get a more powerful electric motor ...& on all MK7 it is a synchronous...not asynchronous...