The Volvo XC40 trailer hitch wiring harness requires a software update (31664323), which must be done at the dealership to power trailer lights.

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PRODUCT LINKS:
1. OEM HITCH - Genuine Volvo Towbar Hitch - Towing Hook 31458009
- https://www.ebay.com/itm/195580621598....
2. CONTROL UNIT - Volvo Genuine Accessory Towbar Control Unit XC60 XC40 32386675 - https://www.ebay.com/itm/254289374930....
3. WIRING HARNESS - Volvo 31650468 Cable harness - https://www.ebay.com/itm/294414663333....

2019, 2020, 2021, 2022, 2023, 2024 Volvo XC40 Playlist:    • Volvo XC40 (2019 - 2024): DIY  .

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