Can someone tell me what part number for headlight

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Feb 8, 2026 | 12:45 PM
  #1  
My right headlight is cloudy and the aiming is messed up (it is constantly moving up and down cycling) and I can't turn on the the auto highbeams.

I want to replace the whole assembly but online there are like 10 different part numbers. My copy of EPC quit working on me.

The car is a 2010 S65 with VIN WDDNG7KB1AA320969

Thanks for any help.
Reply 0
Feb 8, 2026 | 05:10 PM
  #2  
Quote: My right headlight is cloudy and the aiming is messed up (it is constantly moving up and down cycling) and I can't turn on the the auto highbeams.

I want to replace the whole assembly but online there are like 10 different part numbers. My copy of EPC quit working on me.

The car is a 2010 S65 with VIN WDDNG7KB1AA320969

Thanks for any help.
If you can read the label on the unit, that will be definitive.😉
Reply 0
Feb 8, 2026 | 08:13 PM
  #3  
Based on your VIN, your car has Active Curve Illumination headlights (code 614). The correct part number for the complete right-side (passenger side) assembly is A222 820 13 91.

This is the superceded number for the current, updated unit. Be prepared it's very expensive. The left side is A222 820 14 91.

The cycling movement you describe is a classic failure of the leveling motor or sensor. Before buying a whole unit, a specialist with STAR could diagnose the specific failed component, which might save you a lot of money. The auto highbeam issue is separate, related to the windshield sensor (A8).
Reply 1
Feb 8, 2026 | 10:42 PM
  #4  
Quote: Based on your VIN, your car has Active Curve Illumination headlights (code 614). The correct part number for the complete right-side (passenger side) assembly is A222 820 13 91.

This is the superceded number for the current, updated unit. Be prepared it's very expensive. The left side is A222 820 14 91.

The cycling movement you describe is a classic failure of the leveling motor or sensor. Before buying a whole unit, a specialist with STAR could diagnose the specific failed component, which might save you a lot of money. The auto highbeam issue is separate, related to the windshield sensor (A8).
Thanks. I need to replace the lens anyway as it is cloudy. I can't find that part number online anywhere though.
Reply 0
Feb 8, 2026 | 10:44 PM
  #5  
Quote: If you can read the label on the unit, that will be definitive.😉
The label is not on there any more.
Reply 0
Feb 9, 2026 | 02:44 AM
  #6  
Quote: The label is not on there any more.
Fair enough. I only mentioned it because it is supposed to be visible without removing anything for bulb identification purposes.

Be careful with the part numbers as they are LHD/RHD specific.

The lenses are no longer available from MB but Hella may well still carry them.
Reply 0
Feb 9, 2026 | 04:18 AM
  #7  
create a heat box, cook with a hair dryer for 30 mins peel off the lens check the fault - never got any but years back a guy made a batch of metal link rods (for omegas) to replace the plastic ones that snapped after a few years

as for the cloudy UV damaged lens cover - if bad start with 1200 wet and dry, then 1500 finish with 2000 and then polish with headlamp restore -
there is a spray coating that seals the lamp better and you don't need to polish them as much
Amazon Amazon
what do we guess on an OEM headlamp no longer in stock $2795



Reply 0
Feb 9, 2026 | 10:47 AM
  #8  
Not available new is not the same as not available...

https://usedparts.mercedes-benz.de/startseite/
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