I'll have a dig about, but what I gather so far is that thankfully it's still a RWD oriented car (like X-Drive) and only bringing the front in when required, which I believe has a predictability function involved? I'm guessing it will be predominately a driving aid, much like most which are on cars not designed for proper off-road, however, if it's anything like the X-Drive one in my BMW which very much impressed me and I believe uses the ABS/Braking system to mimic an LSD, then I reckon you could be in for a treat because I was cutting about in snow going up hills and all sorts - in summer tyres! Stupid I know, but it was leaving SUV's in its wake!
It's not just the snow, the Expressway here is quite a fast one and in bad rain it can become quite slippy. I definitely notice a difference when cornering in the bad rain between a RWD and an AWD car. Recovery is also far better.
I was skeptical that your wink meant that it would be difficult to find out, and it is!
There seems to be little out there to reveal it's real capabilities. The closest I could find was that it will distribute 50/50 torque across front and rear (link), but there's no mention of individual wheels. I also came across an article which said there was 18 months of winter testing for the XF AWD, so that's encouraging plus they have LR tech to have called upon.
I'm assuming it will be a similar system to what's in the F-Pace, E-Pace etc and whilst I cannot find any AWD test videos (diagonal and roller tests) I did come across this E-Pace video. Although most of the time I notice that either both front or rear wheel are down before moving, I did spot this moment (I wish they had provided a wider shot) where it looks like a front and a rear wheel is off the ground whilst power is being applied. This would suggest that it is using ABS/braking to send the power to the wheel which isn't slipping.
Probably a little more pad wear but I guess it depends on how it has been setup. I reckon when on the move it will just transfer torque from rear to the front and will still effectively be open diff performance on each axle with perhaps only in extreme cases will the brakes be used, such as extreme slippage where a spin is imminent etc. But if stationary and trying to pull away but not getting anywhere due to a wheel on both axles having no traction I reckon it will then use the braking system to stop that wheel and send the power across the axle but that shouldn't involve very much pad wear, unless you are getting stuck all the time! haha
The fact that it can send up to 50% power to the front axle is a good sign though as it would suggest it isn't some lightweight piece of crap such as what was in the Honda CRV and could pull the car away on gravel never mind anything more serious.
Would love to know for sure and find some technical stuff on it. I could ask Jaguar but from past experience I doubt they'll be very helpful and they are probably not talking to me anyway!
Well here I am at 4:15am on New Year’s Day posting on the site. Why you may ask. Had a lovely New Year’s Eve murder mystery party with good friends and went to leave at 1:30am only we couldn’t leave. My XE would not start. No combination of unlock/lock/start/brake pedal would get the damn thing...
Went to open the XE this morning to go to work at 05:15. Pressed the boot release button on the key, but nothing happened.
Pressed the key to unlock the car, again nothing happened.
Repeated that twice, same result.
Was just about to give up and take the backup car when the boot...
Just a daft one to watch out for, but if your car is standing more than usual, check the tyre valve dust cap threads for corrosion. Thankfully I still have the plastic dust caps on, but the drivers side front on mine was a bit fluffy and needed the gentle application of pliers to remove.
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