The MP3 display doesn't list tracks, no trip display, and the image of the rear of the car when reversing (3 bars at the rear and rear corners) is now non-existant. Sounds like these have not been enabled via Lexia when the replacement happened.
the active cruise control is not really important as the warning. for a lane+warning+radar system : you can always install later a mobileye.com system (or a like).its installation is similar to installing a DVR. the price is not cheap. 500 US$ for such system. "smart" mirrors: there are mirrors you can buy with auto dimming (including Android

6155JA was the original Matrix Part Number which needs configuring and has now been updated with Part: 1613424380 which is the newer model. It costs £450.73 from Citroen as of today inc. VAT. 1606616780 is the part number for the Clips, item (70) (£6.07 inc. VAT).

How to Reset / Calibrate the Tyre Monitor system for a Citroen C4 (11 - 18) The Reset Tyre Monitor / Calibration Info for the Citroen C4 (11 - 18) Resetting of the TPMS Tyre Pressure Monitoring System is not required on vehicles with pressure sensors that are attached to the inner (not visible) part of the valve.

We have just bought a 2017 C4 Picasso Flair. I have tried to get the sat nav to display on the big screen (it works fine on the 7” screen), and using the button on the end of the stalk worked out how I’m supposed to do it but it just shows a black screen with the message “Area not mapped” please can anyone tell me what I’m doing wrong 😁 🤞

After switching from cruisecontrol to regulator and back (with the little wheel on the steeringwheel) it works perfectly again.. But after a bit of rotating of that little wheel to remove any dust or corrosion (as adviced here) for the last 2 weeks the cruisecontrol works perfectly again.. But most anoying is the horn that doesn't work at all

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citroen c4 picasso display not working