How to access engineering mode in a Citroën C3 / C3 Aircross

Hold the media button for 6-7 seconds
Enter the code 7503900
Secret menu hidden menu engineering menu maintenance hack

[@Ralletv]

Works fine at me, but what can you do with it ?

[@andrewcandet]

Any idea how to turn off start stop forever?

[@farukgungor9580]

Same question I have

[@wonglamliu9535]

​@@farukgungor9580coding the BSI by computer

[@mihay.]

Do you know how to enter engineering mode on DS7 Crossback and if it possible to activate usb hub on tis car ?

[@0.-.0-054]

It seems same for Opel Corsa F, but what can you do with this?

[@williamtoh850]

Hi is there any solution for unresponsive touch screen ?

[@antonispothitos6502]

Is this for nac Unit or for RCC Unit my friend?

[@angelocandile760]

do you also know how to do a hard reset?

[@GTASkinCentral]

Hold the 📞 button until the unit restarts.

[@angelocandile760]

@@GTASkinCentral I've tried it already but nothing happens. If I keep the 🎵 key pressed, a soft reset happens instead

[@hasank.4064]

This code no open, problem.

[@defundbbc]

Doesn’t work on latest firmware

[@Didovyk]

вы не знаете случайно нового кода? new code?

[@deatpawk]

So do you know new code?

[@eoinm5758]

Yeah but what is spy list

[@goliathdz]

It doesn't work just the system restart the screen

[@anderskjeldsen]

Had the same experience. You have to lift your finger off the button after 6 seconds. Takes a few attempts to get it right.

[@fabiod375]

Buongiorno. Non saprei come fare per accedere all'Engeneering menù della mia Toyota Proace City MY 2021. Chi può darmi il codice? Non riesco ad attivare l'USB Hub. Grazie mille a chi potrà aiutarmi. Un saluto

[@byrrt]

Hai effettuato l'accesso al menu di servizio? Ho una Toyota Proace City e vorrei attivare l'hub USB.