Simple

OK, it looks like you have a leakage some where. it could be a faulty component or improperly insulated or touching wires. However, the C8 has a known problem. Rain seems to seep into the fuse box causing leakage and misbehavior of some systems, it is with the fuse box that is under the bonnet (driver side on the right hand drive cars, like UK and Ireland). I don't know if this is your case, but you need to open the fuse box, remove the board and clean it with appropriate cleaner. You may find residue that needs to be brushed and sprayed off. Also ensure that the fuse cluster in the battery bay is also clean and isolated.

Perform a Procedure to Initialize the Citroen BSI (body control units) every time the battery is disconnected and reconnected. 1. Ensure no diagnostics tool is connected. 2. Put the driver's window down and ensure all equipment are switched off. 3. Ensure all doors are closed, remove key from the ignition and wait for 3 minutes. 4. Disconnect the vehicle battery and wait 15 seconds. 5. Reconnect the vehicle battery and wait a further 10 seconds (do not open doors). 6. Switch on the side lights through the driver's window (you will hear a "bong"). 7. Switch on the ignition and check system's functionality. 8. Hold lock button (on key) down for 10 seconds. 9. Remove key, open & close door and test central locking system (above the mirror). 10. Start the engine and complete the system's check and switch lights off. NOTE: Upon reconnection (soft re-boot), if any vehicle function controlled by the BSi, i.e . interior light is switched on, the internal operation of the BSi has the potential to spike or corrupt its configuration and software program...... If the front windows don't close automatically when locking the car after the reset operation, put the ignition on or start the car and open the windows then close them pressing the lever more than one second (if this does not work first time, try it again). By the way, if your battery is old, it may not be holding the charge long enough, especially in cold weather; Eid Mubarak!!

Mine is C8, 2003 HDi Auto Exclusive and it is 4 gears.

Check the harness coming into the tailgate for chaffs. Please notice that the tailgate itself is not metal!!

This sort of message could arise from a number of things: 1- Could really be a partially blocked DPF. Need to run fast around 4000rpm for few minutes, or use a Evolution XS (Lexia) to regenerate. 2- Could be one of the sensors.. Cam, TPS, etc.. 3- Could be the Pressure Regulation Solenoid (2574.16) in the AL4 Gear Box. 4- Could be loose/dirty connector. 5- Could be the battery (weak charge). One more thing, the inlet butterfly actuator casing was rubbed thin by an adjacent pipe that made a very small hole that causing improper sensor readings that contributed to some faults. One thing about French cars, They can take some time to find the faults and fix once and for all. In the mean time, Good luck..

The tailgate handle is electric (at least on my car), try oiling the lock part... Now, the problem may be with the rubber that helps seal the tailgate (back door to the body), it may be allowing movement instead of closing tight.

It is recommended not to install DiagBox on Windows 10, but part of the following may be applicable to other Windows as well. 4 points you need to consider for a successful DiagBox v7.xx on Windows 10 installation are: 1- Windows 10 automatically tries to use GPT, you may need to change to MBR, so that you can use IDE (Legacy) hard disk controller, else you will get the dreaded error 0.. Changing from (AHCI) to IDE may impose speed penalty; depending on your hardware. This is why I prefer using VirtualBox or VMware Player/Workstaion. 2- You need to install .NET 3.5 if you want to install DiagBox v7.66 or above. Consider installing Java (6, 7 or 8), Firefox and 7zip. 3- You (may) wish to plug-in the Lexia interface and install the drivers "ACTIAPnPInstaller.exe" before installing DiagBox v7.01 to ensure the multi-instance driver is installed. 4- You need to run DiagBox either as administrator or in XP compatibility mode for v7.74 and above. Otherwise you will get a message to reactivate If you have a newish notebook that has Windows 7, 8 or 10 (64bit) and you don't wish to downgrade, it better to install VirtualBox or VMware Player then install windows XP or 7 (32bit) as a virtual machine.

Depending on the software version you will get, according to the site, you will get 7.61. The procedure goes like this: 1- Install DiagBox 7.01, it will start in 7.01, when you reboot and restart it, it will update itself to 7.02. 2- Install the updates (each may include one or more version jumps), first 7.xx to 7.57, then 7.57 to 7.58, then 7.58 to 7.62 and so on.. Please notice that after applying the updates and when you start DiagBox, it will say after "installing internet updates" even though you are not connected. If you want 7.62 or above, you need to download the first package and if you want 7.77, you need to download the second package. 7.62 is rumored to be the one that works with everything. 7.63, 7.64 and 7.65 have problems with Telecoding. 7.66 is ok but seems to have minor issues. 7.74, 7.76 and 7.77 are very new. For you and I, 5.xx, 6.xx and 7.xx will be fine, but stick with 7.62 initially. Below is some information about various versions: DiagBox v7.02 => Lexia Softwae Version= 500.46 & Lexia Interface Firmware = 4.3.0 DiagBox v7.57 => Lexia Softwae Version= 500.66 & Lexia Interface Firmware = 4.3.2 DiagBox v7.58 => Lexia Softwae Version= 500.66 & Lexia Interface Firmware = 4.3.2 DiagBox v7.62 => Lexia Softwae Version= 500.68 & Lexia Interface Firmware = 4.3.3 DiagBox v7.66 => Lexia Softwae Version= 500.68 & Lexia Interface Firmware = 4.3.3 (.NET 3.5 is needed) DiagBox v7.74 => Lexia Softwae Version= 500.70 & Lexia Interface Firmware = 4.3.3 (.NET 3.5 is needed, if using Windows 10, run as Administrator or XP compatibility) DiagBox v7.76 => Lexia Softwae Version= 500.71 & Lexia Interface Firmware = 4.3.3 (.NET 3.5 is needed, if using Windows 10, run as Administrator or XP compatibility) DiagBox v7.77 => Lexia Softwae Version= 500.71 & Lexia Interface Firmware = 4.3.3 (.NET 3.5 is needed, if using Windows 10, run as Administrator or XP compatibility) p.s. The Lexia Software is included within the DiagBox package, it is used for Diagnosis. The Lexia Interface Firmware is checked and update as necessary by DiagBox each time it is started (USB needs to be connected before stating DiagBox).

I actually took mine apart and jet sprayed it clean for a couple of Euros (at the petrol station). Do you know which size drill bit did they use and how deep? can you ask at the garage?

Review this: http://www.citroen-owners-club.co.uk/citroen/topic/22899-al4-transmission-solenoid-and-firmware-upgrade/ There is also another related problem that took me sometime to trace and fix http://www.citroen-owners-club.co.uk/citroen/topic/22902-hunting-at-idle-and-surging-at-low-speed-fixed/

@grantg, What version of DiagBox software are you using? While it is very unlikely to be the reason behind bad connectivity, you may wish to try newer DiagBox versions. Follow these links: DiagBox v7.02 to v7.76: http://cartechnology.co.uk/showthread.php?tid=10116 DiagBox 7.76 to v7.77: http://cartechnology.co.uk/showthread.php?tid=10120

This looks very similar to mine and it states (in the description) it works with Citroen C5: Lexia 3 Diagnostic Tool Description: 1.It is compatible with Citroen cars including: C1,C2,C3,C4,C5,C6,C8,CCROSSER,NEMO,BERLINGO,JUMPY,JUMPER,AX,SAXO,BX and so on. 2.It is compatible with most Peugeot cars from 1995. 3.Diagnostics is performed via OBD-II connector (which is located near steering wheel) or via manufacturer-specific connector (only older cars, pre-2001). 4.lexia 3 Full Chip Firmware Serial Reference Number: 921815/C http://www.aliexpress.com/item/Factory-Direct-Price-Lexia3-Citroen-Peugeot-Code-Reader-Lexia-3-V48-PP2000-V25-Diagbox-V7-61/32320331216.html?spm=2114.01020208.3.10.2ImzMR&ws_ab_test=201526_2,201527_1_71_72_73_74_75,201409_1 However, I can see in the pictures that: Firmware is 4.2.0, which is very unlikely since they are providing DiagBox v7.61 (which flashes v4.3.2), so they must be old pictures. The 10K resistor is also missing on this one; exactly like mine. The newer versions (possibly this one) may have the 10K installed. In any case, mine works with and without 10K (on the C8 HDi). This is why you can only be sure when you receive it and try it...

what stevestoys says is probably the highest possibility. Follow the harness that carries the current for the headlight. Also check the relays, that is if your new fuse box did not come with working ones in place already.

@grantg, They all look like what you have posted, open it and compare against the pictures above, you will know then if you have a full chip or not... Some C8 are CAN-BUS (you will notice that in the DiagBox software when you click on C8). So, you could try soldering a 10K resistor where I pointed if yours is missing and see the result.. Please feed back having tried. @stevestoys, I think you need to take a chance, because the pictures they display do not sometimes match the description. If it is a full chip it is likely to work. p.s. Every device has two boards (sandwiched), the 4 pictures above show the front and back sides of the two boards.

I am not sure what do you mean by "B" I hope you don't mean the 921815/C. Being 2015, it very unlikely. However, Except for the different oscillator (not relevant) it is identical to mine (see attached).. If such, then it should work with the Citroen C8 HDi 2003+.. You will notice that I have pointed a missing resistor which was not included in some production, this is a pull-up resistor which affected cars with CAN-BUS. All in all, if it is not DOA (dead on arrival or faulty) it should work....

Hello, I have noticed that my turbo is sounding rather loud at the start of a drive (above 2K RPM) then the noise goes away. This phenomenon started after the last oil change when I used Mobil 1 ESP 5W/30, ACEA C2 & C3 which is supposed to be excellent alternative. Previously I used Castrol Magnetic and was happy with it.... Any body with experience in this area so I prepare myself for what's coming???

They look beautiful and like if they are factory fitted, Well done..

Where are these lights to be placed? on top of the car, inside the car or on the grill? are you talking about fog lights? You can buy LED lights to replace the current bulbs,

you wrote "I'm useless pm very detailed explanation" PM means private message which is a facility this site offers!!!

Yes, it should..

try downloading this: RTA - CITROËN C8 - PEUGEOT 807 2.0 et 2.2 HDi depuis 06-2002 - FIAT Ulysse et LANCIA Phedra 2.0 et 2.2 JTD depuis 09-2002.pdf It is in French!! If you are lucky and don't have any damage, you should be able to fix in 3-4 hours...

The link below claims it is the new "A.1281 Z" and if you scroll down it claims "3. Supported C-ziro / Ion / all hybrid \ 's support Peugeot 307 and Citroen C5!". Now if you look at the PCB (printed circuit board), you will find it was made in January 2015 (mine was late 2014). The surprising part is that, except for the sticker showing three brands and the "A.1281 Z" model #, it is identical to mine with all the chips names and numbers including the chip oscillator, it is even missing the same 10k resistance mine was missing!!! I am glad I tried to help you, I now know that mine is quite a decent one, but it seems to have gone a lot more expensive because of the rebranding?? I don't know hoe genuine this "A.1281 Z", but I am sure you will find it a lot cheaper with older sticker.. http://www.aliexpress.com/item/Lexia-3-PP2000-Full-Chip-921815C-Lexia3-V48-V25-For-Citroen-Peugeot-Diagnostic-Tool-Auto-Code/32358638102.html?spm=2114.031010208.3.1.JSmQ2C&ws_ab_test=201526_1,201527_1_3_2_1_5_4,201409_1

Don't worry, we have all been there at some stage... check this link: http://www.qbittorrent.org and download the "qbittorrent" software, it is free and one of the best. Install it and run it, it is quite intuitive. After that, copy the link I sent you all of it including the word magnet:..... a one bulk, then on qbittorrent menu bar, click on the first icon (link with a small plus), you will get a dialogue box, stick all the text in there and leave it perform its magic.... Simple..

Check your PM!!

@stevestoys, Yes, they would work on all 32 bit Windows (including Windows 10, which officially it should not be installed on). please review this link: http://cartechnology.co.uk/showthread.php?tid=9779 @skycamvideo, You need to confirm both facts (Full Chip & C5) and being "A.1281 Z" not "9780.Z5". PSA has released DiagBox v8.xx (the software that uses the Lexia hardware) and it is a different design, releasing the new hardware may be more than a co-incidence. Please review: http://cartechnology.co.uk/showthread.php?tid=9983 Few years back, PSA released an automatic firmware upgrade causing clones to be blocked. Hence the need for Full Chip with 921815/C firmware. I have the "9780.Z5" and it was working fine on my 2003 C8. Yesterday, reviewing the circuit board, I discovered that it was missing a 10K resistance that may prevent it from working properly on some systems. I fixed it buy soldering the 10K resistance, and in my case, it is still working and I don't notice a difference. If you have no interest in upgrading; any working version should be fine.