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Suspension, depollution and parking assistance faults. Please help! |
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nebulem
 
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  Member No: #4619
Location: Kosovo |
So I just bought a 2008 C6, and initially I'd get just the "Suspension faulty" beep, usually at downslopes/worse roads. The suspension system works otherwise from what I can tell (I can move the car position up or down using the buttons near the shift knob, it automatically pulls up once i stick the key in the ignition, and then goes down once i take it out etc). A week later or so, the Suspension faulty message began to be followed by a "Depollution system faulty" beep. Since then, it only shows up right after the Suspension beep whenever it comes up. I had a problem with the exhaust around this time, and took it to the shop where apparently a part had blocked the exhaust - i suspect this might be tied to the depollution system? Anyway, the guy took it out at that time so I can still drive. Haven't had a problem with the exhaust since then but the message still comes up. Finally, last week my front right parking sensor fell inside its hole. I was driving and suddenly the parking assistance started warning me that I was about to hit something to my right. When I stopped to check, I saw that the sensor had fallen inside and considered the bumper (?) to be an object that I'm gonna hit, I guess. I turned the car off for a bit, then when I turned it back on the "Parking assistance faulty" message started showing up as well, and it seems to have deactivated the feed from all sensors since nothing shows up even when I go in reverse. I found a way to access the parking sensor through the fog light above it, popped it back into place, and I turned the car on but it still comes up with the Parking assistance faulty message as soon as I start the car. I don't think the sensor broke, since the cable was in tact. Is there a way to maybe reset the parking system? Please help with any of these problems that you might have info on. This is my first Citroen car and I'm new to cars too, sorry in advance if I gave useless info or missed something! Thank you in advance. |
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Dan595
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 Member No: #299
Location: Wiltshire |
Welcome to the forum, good choice of first car... I think you need have the error codes read by the Citroen diagnostic system ('Diagbox' or 'Lexia'). This will greatly help in identifying the faults. Otherwise we are just guessing. A Citroen specialist will be able to do this, and many owners buy their own Diagbox systems and use with a Windows laptop. On the parking sensors I'd be checking all of them, cleaning them up, unplugging them, cleaning the contacts, plugging them back in. Good luck. |
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nebulem
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Member No: #4619
Location: Kosovo |
I checked around the city with some auto shops, and most of them ask for like, 80 euros and upwards just for reading/clearing errors. Might be way cheaper at a Citroen place, but I'll have to check that soon since the closest one is out of town. Pains of living in a third world country, I guess. A quick look around aliexpress led me to a bluetooth PSA COM device that's supposedly a replacement for the Lexia-3 PP2000, do you think it's a valid solution for diagnosing/error reading? It would be way cheaper if I just bought this and it worked at least semi-well. Thank you for the help! Appreciate it |
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MGmike
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   Member No: #3151
Location: South Queensferry |
Can you put a link to the unit you've found and we can let you know if it provides enough functionality. You can buy a full (Chinese) Lexia for about 120 euros if you have a suitable laptop. It takes a bit to load but once done you'll wonder how you ever thought you could work on a Citroen without it. |
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nebulem
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Member No: #4619
Location: Kosovo |
- Click Here - This one! |
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MGmike
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Member No: #3151
Location: South Queensferry |
for the price it looks okay. Would need to see what the software actually covers when installed to be sure. Looks like a cheap usable alternative to a full lexia if you don't want to spend too much initially. | ||
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cit-rotti
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 Member No: #3753
Location: Bayern |
Hi, I would not buy that because it does not recognize all control units and presumably other necessary functions are not possible either. The full-chip diagbox / LEXIA has proven itself - the stable V07.57 is ideal for the C6. e.g. at - Click Here - The software can be installed on a Windows XP or Win7 32 bit laptop - if possible 3GB RAM and dual processor. This laptop is very cheap used. Greetings Wolfgang |
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nebulem
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Member No: #4619
Location: Kosovo |
Hmm okay, I'll check how much the Citroen specialist charges and then make my decision. Do you guys have any ideas as to what might be causing the Suspension or Depollution System faults? Is there a chance the depollution fault comes from that exhaust part I mentioned? |
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MGmike
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Member No: #3151
Location: South Queensferry |
It could be but I must admit I'm struggling to think what was causing a block and has been removed! Do you have anymore details? Depollution fault is just a generic warning and covers all manner of engine management issues which is why you need a code reader. Suspension is usually very reliable but there could be an issue with one of the height sensors. Again, a Lexia is needed to really see what's going on. If you intend to keep the car a Lexia is a must have to diagnose faults, especially if your local garages don't have one. The dealer will charge you as much for one session as it will cost to buy your own (if you already have an older laptop). |
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nebulem
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Member No: #4619
Location: Kosovo |
After looking online just now, I'm feeling pretty dumb even if that part isn't the reason for the Depollution warning. So the part that got removed apparently was the Diesel particulate filter, after looking at pics of the exhaust system components. The mechanic I had it taken to didn't tell me (probably didn't know himself) that it cleans itself if I just take the car out on a highway and go high rpm. He did tell me that it's illegal to remove in the EU, but definitely not illegal in my country (which makes sense considering 90% of our cars are pre-2000 anyway). Sadly I didn't have the time to look more into it myself that day, as I was hurrying to get to work and just had it fixed quickly. So, could that be it then? And I understand! Sadly I have two laptops, but one is way too old (something like 1gb of ram, maybe?) and one is too new. But yeah, it's definitely a small investment since I intend to keep this car for as long as I can. |
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nebulem
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Member No: #4619
Location: Kosovo |
P.S: Is there a way that the DPF was gone beyond hope at that point? Considering that the times that I did drive it from the day I bought it to the day the exhaust got "blocked" it was barely any city driving, and I did floor the gas some times on the highway cause I loved the new car's power. I'm thinking that would've been enough to regenerate it if the DPF was working correctly, but again I'm completely ignorant when it comes to this so I'm just wondering. | ||
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MGmike
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Member No: #3151
Location: South Queensferry |
wow, removed the DPF! Has he re-programmed the ECU so that it knows the DPF has been deleted? Otherwise it will report an depollution fault. If he has the ability to remove the DPF correctly, he might as well delete and block the EGR valves and reprogram the ECU to get you an extra 20% power and toque. Then you'll have a real flier of a car... I somehow doubt the DPF was blocked or past hope but it is possible. Does the car produce a lot of black smoke now? That would indicate there is something wrong which could have blocked the DPF. Usually a decent highway run of about 50km would be enough for the ECU to run a regen if it's required and a forced regen needs a lexia to run it. |
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SLOGGO
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 Member No: #3562
Location: FRANKSTON AUSTRALIA |
If any one plans on buying this Chinese Lexia, please note that the software will only run on old laptops using Windows 32 bit processor. It will not work on later 64 Bit models. Check the info on sale item. | ||
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