1) Handbrake faulty. 2) ESP/ASR fault (which I presume is linked to the handbrake issue) Both of these correct themselves if I turn off the ignition and start the car again but return, sometimes very quickly sometimes I can drive for quite a while before they return. 3) RF unit for the remote locking seems to be dead. If the handbrake warning light on your Citroen Grand C4 Picasso comes on and starts flash, then there is a good chance that ABS sensors of your wheels have a problem. As a reminder, the role of the system is to regulate the brake pressure when you press the brake pedal, to prevent the wheels of your Citroen Grand C4 Picasso are locking, causing I left it a minute and then restarted it and had no problem with anything, the engine and handbrake were working fine, and have been ever since. I rang my local Citroen dealer and they booked it in. However they now say that unless the fault is visible there is nothing they can do! Surely they could have carried out a diagnostic test or something. My C4GP developed a similar fault, which resulted in the automatic function of the handbrake being lost ie no hill start or automatic application or release on pull away. Luckily I could still apply and release the parking brake manually. I had a three light warning on the display, 'No ABS' , 'No ESP ' and 'No Automatic brake ' showing and the About the C4 Picasso. The Citroen C4 Picasso was first launched in 2006 and enjoyed a production run that has just ended in 2022. It’s important to get the exact naming correct, however, because the C4 Picasso had a number of different names and badges depending on the exact variant, and the model year in which one was buying it. I hear 3 beeps, get a message of FAULTY HANDBRAKE, FAULTY ESP /ASR SYSTEM, and the yellow warning lights for ESP, AUTO P OFF and SERVICE are permanently on. In practice the automatic handbrake does not work when I stop or start, and the Hill assistance is also always off. The handbrake works manually though. I have a very similar problem on 2014 Grand picasso Exclusive plus. ESP/ASR system ABS braking system parking brake tyre under inflation fault Anti roll back failed All alarms come on when engine is started. Codes displayed on OBD scanner = P1445 additive adding U1213 Intersystems CAN. Anyone have any idea where i start? Citroen c4 grand picasso mk2 2014, 2015, 2016, 2017, 2018, 2019 rear brake pads and rotor discs replacement/change.Without using diagnostic tool.Disclaimer: .

citroen c4 grand picasso handbrake fault