• IMMO code must present - for P3 cars it is automatically decoded when CEM PIN is present or successfully decoded.
  • The SCU / SCL unit must be new virgin (blue box), used SCU / SCL from another car can't be used.


  • Ignition must be OFF and car keys out of original SCU.
  • Plug in new SCU / SCL and insert key.
  • Plug in J2534 device and start up Vdash.
  • Connect the car and ignore the warning about the key position.
  • Start the SCU / SCL pairing.


  • Put the battery charger on the car. 
scu scl