When should a CitroËn C4 universal joint be replaced? You must change the drive shaft of your C4 (CitroËn) approximately every 80,000 miles. But it must be checked regularly, especially the CV boots. Note that changing the drive shaft requires the correct tools to remove the wheel and braking system, as well as changing the oil in the gearbox. On your right center of the tranny, there should be two big bolts I believe a 17mm one on the bottom left the other top right of the other. The bottom left is the drain plug the top right is where you fill it. If you want to make things easier you can remove the air cleaner and the air cleaner housing then unscrew the sensor on top of the Page 143 I N T E R I O R C O M F O R T CENTRAL CONSOLE SUN BLINDS SUN BLINDS (C4 Picasso) (Grand C4 Picasso) The central console contains : - two cup-holders. Second row Second row - a 12V accessories socket - Pull on the tab A and anchor the - Pull on the tab A and anchor the blind on the hook B. After discovering the different sources of a gearbox or transmission oil leak on your Citroen C4 Picasso, we will try to show you to you what are your options to fix this oil leak. Bear in mind that whatever the case, after having founded a leak, you must go to a mechanic to determine the exact origin of the leak, in any other case your gearbox How to do an oil change on a Citroen DS5 with the 1.6L turbo petrol engine. I believe this will also be similar on the DS3, DS4, Peugeot 3008 and 5008.Requir Q2C4jKZ.