Hello , I have a citroen c5 x7 automatic ligts
I had installed a EKIY T7 , ligth switch worked fine , now I have a dudu7 10 inch the car, ligth switch does not work , even the option to shut down all ligths work , just the ligth switch doesn't work

    Arcelm9000
    Setup>HOME>Day/Night>Choose Day/Night Mode: Light Switch
    What you want to express is that when this option is turned on, the device's theme day night mode cannot switch with the lights?
    If that's the case, you need to check if the headlight wires are connected correctly.

    I really don't care for the themes , its more to dimm the screen in the dark , I've changed the canbus decoder , the wiring harness that I'm sure it's good , but nothing .thank you for your reply

      Arcelm9000 Here I can contradict you. The harness that works with a Canbus adapter might not work with another, especially if it's different brand.

      Ok , thank you

      Hello, I have the same car as you, a 2009 Citroen C5 X7, In my case the lights work well for me, but the rest of the options such as exterior and interior temperature do not work, climate control and fans from the screen do not work either, I come from another Junsun screen and these basic options did work, I have changed cambus 3 times without a solution since everyone says that the cambus is to blame, and it is not true. From what I see, the DUDU7 system is too green in my opinion, and it needs many adaptations and updates to make it a standard system, I have seen several msg in the forum of people with Peugeot/Citroën with the same problem and they still have no solution, let's see when they give us a joy, Since in my opinion, if they do not have a system prepared and working for a specific brand, they should not sell it as such, in my case after talking a lot with the mekede salesperson and guaranteeing that it was 100x100 compatible with my x7 c5 Citroen, in the end it has not been, so we have to wait until one day they release an update for our cars in dudu7, since in Junsun they do have them more updated.

      The exterior tenperature works for me , in the navbar options ,interior it says that i need a obd , climate control I never had luck, even the steering weels i could never change ,and the lights just the switch doenst work for the moment I'll try to change the wiring again to see if I get lucky , if is a software problem let's wait to see , in any case the device is really a good machine

        For me, the outside temperature that shows me is the one that the 4G internet connection gives me, but not that of the car's temperature sensor.
        But the climate control has never worked for me, it is a very good machine, I really like it and I am delighted with it, but for me it lacks things that others do have.

        Arcelm9000
        "and the lights just the switch doenst work for the moment"
        Do you want the screen to become darker after turning off the vehicle's headlights?
        If that's the case, you can use this option
        Setup>HOME>Day/Night>Extreme Dark Mode

        Try to check if you have "lamp" enabled in the android settings. There were people that had the same problem as you and it was solved like in the video linked.
        https://photos.app.goo.gl/iuFGZi8USHg3SBno6

          He conseguido que me salga el clima en la pantalla aunque no me funciona la pulsación desde la pantalla, al menos se visualiza, cambiando en los ajustes del cambus, mi C5, por C4 seguiré haciendo pruebas.

          @Arcelm9000 @Verema Why is this going so off-topic? If you want to discuss canbus possibilities/issues, start a new thread please, if necessary spefically for your type(s) of Citroen. The title is about day and night mode.

          MihaiFlorin thank you very much , that was the problem , it works like a charm now , changing harness , canbus, an the problem was only one option .