Hi..there thanks for getting back.. Ok..Im not sure what steps you have taken already via your manual as you dont say or what steps you have done upto to date..But yes it is correct that doors/boot should close once the vehicle has exceeded above or over 6mph roughly so you shouldn't be able to open the doors at all when this features activated when and above that speed - there is a way it can Citroen C4 Grand Picasso - Rear air suspension failure - again - jonimaka : My C4GP Exclusive has a rear air suspension fault (every morning the car greets me with the rear suspension dropped), the mechanic told me that he can observe the defective air-bag frothing and thus an air leak. Yes Tuesday, September 8th, 2020 AT 5:41 AM 1 Reply KASEKENNY MECHANIC 18,907 POSTS Unfortunately we don't have a manual on this vehicle however, in general the sensor is part of the switch. Basically it is a sensor that is in the switch that determines the position of the switch. I can remotely unlock the car from 30 feet away but the door mirrors wont fold out and the car wont start on the button the car will unlock on the central locking but the mirrors wont fold out and the boot wont open on the power assist but will open manually. once in the car the ignition wont come live the stearing loc The A/C wont work without the fan. If you take the heater resistor out you can tell at a glance if its burned out if it is change it otherwise you`ll have to look deeper. The heater resistor will cost about £35/£40 I think. My last car a MG ZR went through about one a year, I could change it in about 5 min. Barrie. Can't find the additional fuse box allocated BHF3 in the passenger compartment. Info I have is from car-box.info. Looking for the boot switch fuse. Seems to be one here as F9 or F20. Two fuse panels inside the glove box but no idea where the 3rd is. Boot won't open but figured check the fuse before taking any panels off. Open the passenger door, and look at the side of the dash board. There should be a triangular panel. Pull the panel off to reveal a small set of fuses (see the back of the panel for the fuse map). To power down the central locking you need to remove the Dome Light fuse, this is located top left. 53uaGq.