Body Roll Issues ACE 2010 Range Rover Sport SC L320 - Land Rover Forums : Land Rover and Range Rover Forum
 
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post #1 of 2 (permalink) Old 03-21-2019, 08:21 AM Thread Starter
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Body Roll Issues ACE 2010 Range Rover Sport SC L320

The 2010 supercharged models all came with the active cornering (ACE) system which is great when it's working. Unfortunately I went ahead and added larger tires and went off roading, now I find that when I get on the highway or make a turn at over 30 miles an hour I get a roll error and my dash lights up telling me to pull over. I have a generic viscous fan fault (not on dash but when scanned) that may be related or not. I had the ACE system pressure checked and there wasn't any... unfortunately it doesnt seem to be leaking either (fluid is still full). That points to the only other culprit correct? The actual pump? I did a search and there may also be an air valve system involved as well? Does anyone have experience with this? Could it be due to rubbing on the tires or reduced weight because of rubbing. I have not heard the rubbing at the same time as turning so I believe it is separate. These pumps seem to be rare and super pricey at around 1k plus labor... some people seem to advertise them as AC pumps as well.

I know they make dummy pulley installs but there must be some software involved in that and I am sure we're looking at around the same price in the end of getting the system up and working and never hearing (or feeling) from it again....id rather get it up and working because it seemed to make a real difference on the highway especially with the bigger tires.


Unfortunately my picture is too big to post
Thanks everyone!


Also if anyone has any knowledge of an aftermarket truetrac or detroit locker install front or rear process and cost please PM me.
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post #2 of 2 (permalink) Old 03-22-2019, 08:38 AM
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Originally Posted by Benjamin Davis View Post
Unfortunately I went ahead and added larger tires and went off roading, now I find that when I get on the highway or make a turn at over 30 miles an hour I get a roll error and my dash lights up telling me to pull over. .
How much larger tyres? if they exceed 5% in diameter the system can be mixed up cos it expects a certain VSS(vehicle speed signal) at a certain rpm/gear/torque read on the CAN bus cos it was "calibrated'' from factory for that...as the VSS is altered by the tyre's size it doesnt match the expected values and the system goes to default... i've seen this few times and refitting standard tyres fixed it but i've also seen cases when the tyre size wasn't an issue so you should fit standard dimension tyres for test and if the symptom goes away at least you know it's that, strangely the sensitivity of these systems is not the same on all ... though the best would be to read the stored fault code before that cos it might be something coincidental so at least you know what's about

if you didnt read the owner's manual dowloload this https://www.keepandshare.com/doc3/58...es-pdf-2-3-meg cos it's time to do it to see how important are the tyre dimensions and pressures, if you dont have patience reat at least the last page

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