Hello, I own a 2021 DS7 Crossback 2.0 Hdi Rivoli with Active Scan Suspension and 50.000 kms. The car is bouncing around every bump, and skipping when driving over small cracks on the road or sharp uneven surfaces. The car has always been treated very gently, with no errors or warning lights on the dash. I had it scanned and nothing came up related to the suspension. I might be wrong, but it feels this problem arose after a battery change, no difference in driving modes (Sport, Normal or Comfort). I live in Argentina, and my car is not very popular here, the official Peugeot/CitroĂŤn dealership has no idea whatsoever. However, my father in law drives the same car, same year and spec, same milage also. Comparing the two, it is very clear his car has much better driving dynamics, stability is night and day, and bumps are absorbed by the suspension. Could anyone with experience on this issue help me out? I bought the car used with 40.000 kms on it, optimal condition, but I am regretting it already. Thank you.
Welcome to the community @Juan_Larranaga !
When did you do a wheel alignment last time?
Iâve had exactly those issues for a long time and a month ago I took in for a wheel alignment and after that the problems are gone.
Hello, Jay. Thank you for your reply. I have never done an alignment on my car yet, it drives straight with no issues, so never felt necessary. But your solution is very welcomed, itâs driving me crazy. I honestly feel unsafe, it is unpleasant, and I avoid driving it. Can you please further elaborate on the alignment? Anything precise or settings to look at? The rears seem to have an aggressive negative camber setting, but I donât see any uneven wear on the tires. Thanks again.
One value is in the wheel alignment, which can be adjusted. This should be done within tolerances but as close to zero as possible to stay on green. The design allows the rest to correct a little itself at the same time.
If you take it to a tire shop, or a regular mechanics garage, they know what to do.
I agree, it is really unpleasant to drive it like that. And even worse if the road conditions are bad as well.
Yes and no. Theyâll set on green but it in the middle, and this suspension works best when itâs as close to zero as possible, but on the green off course.
ok, but a DS/Stellantis mechanic would know that I suppose?
With all due respect, I donât think so, this is the experience of users of this suspension, not PSA technicians.
If they have a specified value of, for example, +0°26Ⲡ¹ 0°10â˛, thatâs what theyâll set. If you tell them to set it to +0°16â˛, they probably wonât do it.
Ok, guys. Thank you for your help. The car is now aligned and feels smoother on the road. I havenât driven it much and will further test it in the next few days. Convergence was set to minimum, in the green. Checked all bushes and joints, very solid all around.
Is there a difference if it doesnât have the active scan suspension?
Then write down what the regulatory data and tolerances are. Maybe it will be useful to someone.
The parameters (not confirmed) I found for the DS7 are:
Total convergence
Front â0°10Ⲡ¹ 0°10Ⲡ(divergence)
Rear +0°26Ⲡ¹ 0°10â˛
There are probably differences depending on the 4x2 or 4x4 version. Active shock absorbers probably not.
Thank you for your call following the diagnostics and inspection on your vehicle. As discussed, we have found additional play and movement within Both rear Longitudinal Suspension arms. These vehicles are known for the rubber bushes on the end of the suspensionâs arms dropping lower than there housing, causing the arms to have more movement and cause the issues which you are experiencing.
Thatâs from a ds dealer here in the UK.
Mine is going in next month.
OK, guys. Big update on this issue. The car still felt wrong after alignment, so I decided to call a proper mechanic, one with experience in sophisticated suspension systems. The official service and everyone else said âall is goodâ. Well, it wasnât. At 54.000kms, my 4 active shock absorbers were completely dead, alongside all of the control arm bushes. After further inspection, they found all the electronic valves from the Active Scan faulty, main reason for not sensing any differences in the drive modes. A total nightmare, and it got even worse after receiving the quote for 4 new original shock absorbers, which needed to be imported, at a whopping $4500usd, plus bushes, rounding $5000usd all around, labor cost excluded. So, I had two options, either change every component or repair the shock absorbers with a specialist. After consideration and advice from my mechanic, who has several DS7 clients with the same issues, I decided to repair and refurbish the shocks, increase the stiffness and maintain the active scan fully operational. All for about 50% or less money. The job was completed in a weekâs time and Iâve done over 1000kms with the new setup. The result was excellent. The car no longer bounces around, it is slightly stiffer - especially the rear, and handles 100% better. The drive modes change the character significantly, and Sport Mode gives you the confidence needed at higher speeds. However, it was noted by the mechanic that the electronic valves on the shock absorbers can break anytime under stress, they seem to be designed for European roads, and a bad bump can leave them open, resulting in insufficient damping, for good. The valves were reinforced, the shock absorbers too, with stronger internals and almost double the load, with a stiffer ride as a result. I feel some relief, but with a bittersweet feeling. How can a car with 54.000kms have these types of issues? Issues that are overly complicated and expensive to fix. The shop that quoted the original replacement shock absorbers was fully aware of the situation, and said they get calls every week from DS7 owners with faulty active scan suspensions. In comparison, my second car is a BMW 5 Series, and my wife drives a VW Suv, never a big issue, only minor things that were mostly covered by the dealership. A big disappointment from DS, and as I stated on my first post, I regret getting myself into this messâŚI should have stayed with the germans.
Suddenly I feel content about that the shop told me last time that I donât have the Active Scan suspension. 
Glad it got solved, though it wouldâve been better if it were just the alignment issue.