In engine control unit: Entwicklungen (Development data) ->F3 Password : flexecu ->F3 Steuergerate – Anpassungen (Control unit adaption) ->F3 Steuergerate-Anpassungen (Variantencoderierung) ->F3 VCD_Transporter->F3 a Pop-up tells you : “Mindest eine Codiereinstellung ist ungultig” confirm -> OK
Here you will find the option settings write down the line that is blue. For example : NSG or NAG_Klima_Wasserstandschalter
Now we search for the string that contains the same options + Tempomat and Begrenzer So that will look like : NSG or NAG_Tempomat_v-Begrenzer_Klima_Wasserstandschalter Once you find it , click it and confirm with ->F3 “Soll die Codierung in Steuergerat ubertragen werden ?”->F3 JA or YES->F2 to proceed
Now we log out the engine ecu and go to the : Instrument Cluster ( Kombi instrument) (Magnetti Marelli)
Steuergerate-Anpassungen (Variantencoderierung) ->F3 Variantencoderierung Algemeine Daten->F3 Scroll down untill you see “Limiter” set to Ja or Yes ->F3 F2 -> F1 -> F1 Ansteuerungen -> Gesamstliste aller Ansteuerungen -> Scroll down untill you see the line : Steuergeraet Resetten (PowerON-Modus) (FN_Reset_SG_Power_ON) Press F3 and confirm again with F3 Now you will see the “Kombiinstrument” reboots
Cruise control coding is added succesfully to your W639 now