SwedeSpeed - Volvo Performance Forum banner

1 - 15 of 15 Posts

·
Registered
Joined
·
621 Posts
Discussion Starter · #1 ·
I have a XC70 with 4CC - despite the positive comments on the system here, I do not detect ANY difference at all with any of the settings.<p>Am I alone in this? Could it be that it is not working?
 

·
Registered
Joined
·
1,000 Posts
Re: 4CC (rovermark)

No way, you should DEFINITELY notice a difference between the two extremes, Advanced and Comfort. Harder IMO to tell from either extreme to Sport.<p>Find a stretch of road that's a bit bumpy for a while (I find a bridge is great, because often the decks have the little cracks every 30 feet where panels meet) and drive at a constant speed on one setting, then press the button to change. It`s fairly immediate, and the bumps should be way more pronounced and stiff when you go over them in Advanced. I find the little bumps are the ones you feel the most in Advanced.<p>Ooh! Here`s another test I did. I drove on a road where on the center line (or separating two lanes going in one direction) there were the little reflectors that are glued down but stick up like an inch off the road, and intentionally drove on them with the driver`s side tires for a while, while switching modes back and forth, and could totally tell the difference.
 

·
Registered
Joined
·
621 Posts
Discussion Starter · #3 ·
Re: 4CC (Lotus99)

I'll try the experiments you describe, however I have not found any discernable difference. I even asked two other people to sit in the car with me and switched it from Comfort to Advanced - no one could tell the difference.<p>Is this "normal" even if you are not driving over bumpy terrain? Could it be not functioning? To me it seems like one of those dummy buttons you find in an elevator.<p>Has anyone a similar experience where they did not find a difference between the settings? Would it be worthwhile to ask the service advisor to look into it.<br>To me the 4CC - on my car- is pure gimmick.
 

·
Registered
Joined
·
21,340 Posts
Re: 4CC (rovermark)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>rovermark</b> »</i></TD></TR><TR><TD CLASS="quote">I'll try the experiments you describe, however I have not found any discernable difference. I even asked two other people to sit in the car with me and switched it from Comfort to Advanced - no one could tell the difference.<p>Is this "normal" even if you are not driving over bumpy terrain? Could it be not functioning? To me it seems like one of those dummy buttons you find in an elevator.<p>Has anyone a similar experience where they did not find a difference between the settings? Would it be worthwhile to ask the service advisor to look into it.<br>To me the 4CC - on my car- is pure gimmick.</TD></TR></TABLE><p>4C (one C, it stands for Continuously Controlled Chassis Concept) most definitely should feel different mode to mode. Something is wrong with your car. <p>I have never driven an XC70 with 4C, but have driven many R's and a couple of S80's with it. The difference is very noticable.
 

·
Registered
Joined
·
12 Posts
Rovermark, maybe you and your friends are just too skinny? ( I am only half joking) When we got our V70 last year my wife could not notice any difference between Comfort and Advanced. However, 5 months into a pregnancy (and a number of more pounds) she banned moving the 4C off Comfort, as she claimed Sport and Advanced made her new 'jiggly bits' vibrate too much.
 

·
Registered
Joined
·
956 Posts
Saw the steering wheel back and forth in violent movements. You will notice the difference if it is working.<p>Tip: Don't lose control <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0">
 

·
Registered
Joined
·
1,670 Posts
Re: 4CC (rovermark)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>rovermark</b> »</i></TD></TR><TR><TD CLASS="quote">I'll try the experiments you describe, however I have not found any discernable difference. I even asked two other people to sit in the car with me and switched it from Comfort to Advanced - no one could tell the difference.<p><B>Is this "normal" even if you are not driving over bumpy terrain?</B></TD></TR></TABLE><p>Rovermark, 4C affects the amount and type of motion that's induced in the body of the car and its occupants by the motion of wheels over road imperfections such as bumps and ruts. If the road is smooth, there is no up-down motion at the wheels, so you will feel no difference between the settings. You need road imperfections in order to detect the differences in ride characteristics.<p>4C also affects handling characteristics. To detect those differences, you need to do things like hard cornering or quick changes in steering direction.<br>
 

·
Registered
Joined
·
35 Posts
I definitely notice the difference between settings, but as mentioned above you would not notice the difference over very smooth roads. Comfort = body roll, Sport = day to day balance, & Advanced = want to be AMG sport suspension but haven't refined it yet.
 

·
Registered
Joined
·
621 Posts
Discussion Starter · #10 ·
Re: (gregorc08)

I tried putting it in advance and driving with that setting - zero difference. I don't know if it is worth speaking to the dealer as they tend to minimize any problems.
 

·
Registered
Joined
·
35 Posts
Re: (rovermark)

Rovermark,<br>If you can't notice any change then there definitely is an issue. This comment from Lotus 99 earlier in this thread is exactly my experience of 4C <p>" Find a stretch of road that's a bit bumpy for a while (I find a bridge is great, because often the decks have the little cracks every 30 feet where panels meet) and drive at a constant speed on one setting, then press the button to change. It`s fairly immediate, and the bumps should be way more pronounced and stiff when you go over them in Advanced. I find the little bumps are the ones you feel the most in Advanced. <I></I> "<p>I also notice the change almost immediately, there is a stretch of road with double S bends linked Ii drive over to & from the office daily, if I go through the first 2 bends in Comfort then switch to Advanced before the second set of bends the change is really noticeable. The change in attitude of the car happens easily in less than 50 metres of travel.
 

·
Registered
Joined
·
621 Posts
Discussion Starter · #12 ·
Re: (gregorc08)

I'll take it to the dealer and ask them to check it. Is there an objective way to test the system other than by "feel"?
 

·
Registered
Joined
·
1,000 Posts
Re: (rovermark)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>rovermark</b> »</i></TD></TR><TR><TD CLASS="quote">I'll take it to the dealer and ask them to check it. Is there an objective way to test the system other than by "feel"?</TD></TR></TABLE><p>Good luck. I hope they don't give you the line that if there was something wrong with it, there'd be a code in the computer... that's what I got when I had asked them earlier this year to check the AWD system (you may recall my post about not being impressed with the system after being stuck on a snowbank, with the rear wheels on dry pavement and the fronts on a foot of snow, but the car didn't move as it wasn't transferring power to the rears with traction).
 

·
Registered
Joined
·
21,340 Posts
Re: (rovermark)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>rovermark</b> »</i></TD></TR><TR><TD CLASS="quote">I'll take it to the dealer and ask them to check it. Is there an objective way to test the system other than by "feel"?</TD></TR></TABLE><p>Yes, the SUM (suspension control module) and sensors in the shocks and body can be read on the computer.
 

·
Registered
Joined
·
621 Posts
Discussion Starter · #15 ·
Re: (Needsdecaf)

Thanks - I will ask the dealer to do so instead of them saying that they will check it with a "test drive".
 
1 - 15 of 15 Posts
Top