Hi, I want to share my journey to activating DLA on a MY17 Tiguan (Highline).

Some of my observations:

  • MY17 Tiguans have Mid LED headlights which are capable of DLA.
  • GLW Sliding Light Width Control (Gleitende LeuchtWeitenregelung) and MDF Masked Long Distance Light (Maskiertes Dauerfernlich) are components of DLA.
  • GLW was enabled on module 55. DLA is 'enabled' showing no errors.
  • I wasn't able to activate MDF. Coding rejected (31).
  • After GLW was enabled, the headlights do a different dance. Similar to YouTube but not the same.


I will need to sort out the following:
  • Why is the coding for MDF rejected? I think possibly parameter containing MDF data will need to be flashed on module 55 to resolve this.
  • How does DLA work with only GLW enabled?
  • Does full functionality of DLA require both GLW and MDF to be enabled?