C4 - DS4 Owners : Forum / threads http://c4owners.org/ The Citroen C4, C-Cactus and DS4 - everything you need to know about owning a Citroen C4 be it a Coupe, Hatch, By Loeb , C4 Picasso, Grand Picasso (all years) or DS4 Fri, 10 Apr 2026 20:04:07 +0000 http://backend.userland.com/rss092 C4 1.4 hard to start and keep going Hi there,my trusty C4 Coupe has developed an issue over the last few weeks.It’s hard to start when cold but will eventually start after 3 of 4 goes of the key davidmalone95@nospam.com (Inna) http://c4owners.org/plugins/forum/forum_viewtopic.php?248754 RT4 unit is stuck on a "upgrade CD request" after faulty upgrade Hi everyone,Sorry if this topic has been covered before.My Magneti Marelli RT4 (GSM version) unit is stuck on a "upgrade CD request" after a faulty upgdade atte tonny@nospam.com (tkieding) http://c4owners.org/plugins/forum/forum_viewtopic.php?248750 EOLYS and FAP Hi, My car has now done 118000miles and by and large I heve serviced it myself since 20000 miles. I have an orange SERVICE light and I dont really know why but wglees@nospam.com (wrootrhino) http://c4owners.org/plugins/forum/forum_viewtopic.php?248746 UREA light on - but no fault codes After all these trouble-free years of driving my C4GP 2014 the UREA tank once again is causing issues. I had my tank changed under warranty back in 2017 and sin kman9980@nospam.com (Duck999) http://c4owners.org/plugins/forum/forum_viewtopic.php?248726 Drivers Door Locking Issue Hi all!I’ve got a bit of a long winded one here…When I lock the car using any method everything locks. When I unlock the car all the doors unlock apart from Danielbradd@nospam.com (D-Monk) http://c4owners.org/plugins/forum/forum_viewtopic.php?248725 Original Bluetooth Mic Hi,I hope I am in the correct place for this question.I am in the process of installing an Android Head Unit to my 2013 Citroen C4.Is there anyway that I can co arlenemagill@nospam.com (Azza) http://c4owners.org/plugins/forum/forum_viewtopic.php?248723 Parking-assist and blind spot detection failure Failure is indicated asU1F22-87: Fault: no communication with parking assistance ECU.B1229-11: Parking assistance sensors supply fault-short circuit to earth.On stian.skjelstad@nospam.com (mywave82) http://c4owners.org/plugins/forum/forum_viewtopic.php?248718 2022 Spacetourer Central Locking Good morning all,I’m a new Citroen owner and new to the forum.I have just purchased a 2022 C4 Spacetourer, but the central locking isn’t working. When using Sthatcher@nospam.com (ScottT) http://c4owners.org/plugins/forum/forum_viewtopic.php?248717 Citroen Grand C4 Picasso 2014 (New Zealand) NZ car is effectively the British model I believe and I bought it new in 2014.It's just turned 195,000Km on its clock this week. (~121,000miles)I stopped gettin seoras68@nospam.com (seoras) http://c4owners.org/plugins/forum/forum_viewtopic.php?248714