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Suspension problems |
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C6Dave
 
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    Member No: #1
Location: Northumberland |
magicands wrote ... My suspension does not rise with a "blip" of the key, the key has to be in the ignition and the ignition has to be on before it sits up!! Well your the odd one out again as mine rises as soon as you unlock the car...... |
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Trainman
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 Member No: #86
Location: Penwortham |
C6Dave wrote ... magicands wrote ... My suspension does not rise with a "blip" of the key, the key has to be in the ignition and the ignition has to be on before it sits up!! Well your the odd one out again as mine rises as soon as you unlock the car...... Mine does too. |
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Ped
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 Member No: #82
Location: Maidenhead |
Ditto - although mine normally sinks slightly! | ||
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Tjensen
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 Member No: #954
Location: Bergen |
And mine- (checked today)Blip-whirr-slowly a few cm up. DS, CX, XM was faster with the engine running, but of course nothing happened before that. Turning off: a few cm down after some seconds. C5 probably as C6 ? (Had to refill 0,7 liter a few weeks ago, the garage said it was normal: that LDS "disappeared" a little, probably through the steering. |
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speedfix
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  Member No: #1043
Location: south west |
Mine is ok, lifts a little to normal height once the car is unlocked with the mirrors folding back. No suspension issues as yet. The car in general has been outstanding. Trip to portugal soon, taking the lap top lexia and auto data as this seems to work well with probs on PSA, may take the solus as well. IMO multi meter is a must for pinpoint testing. |
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smihaialex
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  Member No: #1031
Location: Bucharest |
Hey @magichands, you are not alone - my car is the same - it sits up when key in ignition and half turned, not when unlocking... Are we sure that this is a fault and not by design?!? Maybe earlier cars were built like this - up on ignition, not on unlock?!? Or maybe there's a setting for this accessible via Lexia/Diagbox only?!? Thanks, Sam |
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cruiserphil
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 Member No: #38
Location: Celbridge |
Well Sam, Both of our cars are 2006 build and both run the suspension pump when you unlock to stabilise height. I always thought this was the idea to get around the delay with older models having to start the engine and wait for the car to rise? With the C6, the car has achieved height by the time you get into it for the quick getaway! Regards, Phil C. |
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dsharples
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  Member No: #119
Location: Woodbridge |
Is there actually two things happening here. (1) When the car is unlocked, the car returns to a standard "reference height", and (2) When the key is turned in the ignition, the car moves to its proper self-leveling operation to "compensate" for the fact you are sitting it it etc. I was told it only lowered when "parked" as a design aesthetic... |
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Tjensen
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Member No: #954
Location: Bergen |
Yes, it is 2 steps. The lowering when locking is aesthetic, but I also heard that it is the right hight for stepping out and unloading. | ||
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smihaialex
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Member No: #1031
Location: Bucharest |
Well, I see your point Phil  However, there could be another logic at work here - it lowers itself when turning off the ignition to help you get out of the car and also to help with unloading your luggage, right?!? So then, wouldn't it make sense to stay down after unlocking to help you load your luggage and get inside the car, and only get back up on ignition, when presumably the luggage has been loaded and the passengers and driver are all aboard?!? I'm not saying that this is right, I'm just thinking out loud...  However, exploring all the possibilities, if it were to be something wrong with my car, what would/could it be?!? Everything works well on demand (pressing the buttons takes the car to the desired height in a timely fashion). When ignition half turned, normal position is reached fast, with no noises or hesitation. Everything seems to be just fine. Are we sure there isn't a Lexia setting on this?!? Set to 'Bank Robber' on your cars, Phil, and to 'Shopping Housewife' on mine Thank you, Sam PS: Mine also lowers when ignition off, not when locked
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cruiserphil
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Member No: #38
Location: Celbridge |
Sam, Points taken and understood. If I can, I will check with Diagbox for options at the weekend and report back. Regards, Phil C. P.S. I've moved up in the world - I have Diagbox now!! |
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smihaialex
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Member No: #1031
Location: Bucharest |
Hey Phill, don't bother - I was wrong - my car does lift up on unlock I just wasn't paying attention. After reading your post, I did pay a bit more attention and found out that it in fact does. However, it is indeed a two (2) step process - it lifts up about half way on unlock and then another bit on contact (inserting the key and turning half way, waiting for the dash to bring up 'oil ok'). I was only noticing the second lift up (it's harder to miss, because I'm actually in the car) So, thank you, as always any chat with you is very informative Cheerios, Sam |
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smihaialex
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Member No: #1031
Location: Bucharest |
Wow! The strangest thing happened... I'm beginning to feel that my car is sentient and, sensing that I was badmouthing it on our forum, it decided to give me a lesson... You know how I was saying that everything was fine and dandy?!? Well, as it turns out, everything isn't nice and dandy... Today, the screen just brought up "Suspension faulty: Max. speed 90 Km/h" as well as the SERVICE light... The issue happened just moments after passing over some bumps in the road with my left hand side, at very low speed (just starting from a traffic light), causing the whole car to wobble side to side, like a small row boat on a lateral wave ripple. It did not happen instantly however - passed over the bumps with my left hand side, and 2-300 meters later, up pops the message... Now, I have done extensive reading on our forum on anything suspension related, and on the one hand I must thank you all for the awesome contribution, especially Phil who has done a heck of a job documenting his past issues and some fine DIY solutions, but on the other hand, I feel I'm getting a bit of a headache because there's so much information that I don't know where to start. And the feeling that it's a bit too much for me to tackle by myself, but also that I just can't trust my Citroën Service with any of this isn't helping either. So, if possible, could you guide me through what would be the next steps. Besides the "Suspension faulty: Max speed 90 Km/h" message and the SERVICE light, symptoms are as follows: - up and down suspension buttons do not work, clicking on down does nothing, clicking on up brings up: "Command disallowed" with the sketch of the car's profile crossed off, just like when pressing on down while the car is moving or on up when the speed is above the limit for the requested height setting. - the car's rear does NOT drop while driving - I do find my car on its lowest height setting occasionally while parked - sometimes when raising the suspension or better yet when lowering, it seems that one side is lowering faster than the other, especially at the front (can't remember which side faster - left or right) - ride is better since CSS software update, but still bellow my expectations from the world's most advanced suspension system - it's crashy and loud on poor road surfaces, but soft and pitching front to back and side to side when the road surface is good, but wavy or in corners, especially the front seems very bouncy up and down - feels like a small row boat tackling some wave ripple head on - I've always had a feeling that there's something wrong with the suspension but never got the chance to drive another C6 for more extended periods, so that I can see what it's like at motorway speeds, what it's like at low speeds, what it's like on poor roads etc - Sport mode is working (or was working before the message appeared) - I did sense a difference between sport engaged and sport disengaged - sport engaged, the car felt more like a traditional suspension car - stiffer, could feel every crack in the road, but it would still bounce (especially at the nose) if road was wavy and it did still lean into corners tackled somewhat more aggressively (at higher speeds), also the sound it made was louder in sport mode, especially when jumping off a ridge (like you know how some bridges feature a ridge in the asphalt between the portion of the bridge that's ascending and the portion of the bridge that's flat, which if you tackle with more speed gives the impression that for a second the car is airborne, like in the movies - well, whenever I would hit such a ridge with higher speeds, as soon as the front wheels drop behind it, there's a loud thump like sound from the suspension - that sound would be louder in sport mode). So, bottom-line: what next? Thank you, Sam |
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drummond
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 Member No: #238
Location: Aldeburgh |
All hydropneumatic suspension systems fall over when one gets to a hump back bridge or similar. I wonder if the small size of the C6's spheres allied to the weight of the car may be to blame for the crashing,(just a thought). I've driven three C6's, and of the two 2.7's that I drove (one for two weeks) both shivered like a dog getting out of water on occasions. My 2.2 doesn't, as it has simpler suspension. The CSS should help, but I think that you have a problem which we all have. I said two years ago that the suspension system ís less good than the DS that I have, and I reiterate that. Quite a lot more complicated, as well. Much quieter, though! The current version of Lexia should tell you about the message. Regards Tim |
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gmerry
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 Member No: #21
Location: Scotland |
Hi Smih' , how old are your spheres. Have you checked the pressures? My first port of call on any major loss of ride comfort/control would be to check out the front suspension spheres. For the 2.7 Hdi, these are charged to 50 bar (front corners) and 70 bar (front stiffness regulator) which is a very high pressure for such a small volume (385cc) to be contained by a flexible diaphragm. In my opinion, anyone servicing the C6 needs a sphere removal wrench and a sphere pressure tester: the good news is that it is a fairly simple job to depressurise the suspension and remove the front spheres. Regards G |
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