Who this is for
Owners of 2024-2026 Hyundai, Kia or Genesis cars with the two-screen ccNC or ccIC dash.
comma fourcomma 3X
sunnypilotMake my car workAdvanced
sunnypilot ccNC branch for two-screen Hyundai and Kia cars
If your 2024-2026 Hyundai or Kia has the wide two-screen dash, this test branch makes it work without dash errors.
This is a live community thread The work is still moving. Read the newest posts before you follow older steps.
You need
- A comma four or comma 3X
- Smart cruise, lane following and lane keeping on the car
- The harness letter listed for your car
In plain words
Why this guide matters
Hyundai and Kia cars with the wide two-screen ccNC dash throw dash faults with normal openpilot. The sunnypilot ccNC branch fixes those faults on cars like the 2025 Tucson, 2024 Sonata and 2025 K4 and adds blind-spot icons. This thread lists the cars, harness letters and how to get an unrecognised car added.
The short version
What the full guide walks you through
Read the disclaimer and check your car is on the branch's list.
Buy the harness letter shown next to your car.
Install the prebuilt branch for stability or the main branch for the latest.
If the car is not recognised, share your device with the developer as described.
Before you start
- Unfinished development software that may break at any time.
- Some cars on the list need the angle-steering branch instead.
The full community thread belongs to sunnypilot. Checked on September 10, 2026. Their last update was August 25, 2026.
Quick answers
Questions people ask
How do I know if my car has ccNC?
Look for the wide two-screen panel across the dash, found on 2024 and newer models like the Sonata, Tucson and K4.
Which harness does a 2025 Kia K4 need?
Hyundai A without HDA2 or Hyundai R with HDA2, per the thread. Confirm by checking the connector first.
Is the ccNC branch stable?
No; it is unfinished development software that may break. The prebuilt version updates less often and is steadier.
Check your car
Cars this guide talks about
Support changes by year and trim. Open your exact car before you buy anything.
Related
More guides like this
All community guidesNot sure this is your path?
Check your exact car first, then choose software and hardware.
Photos: comma.ai. Guide content belongs to sunnypilot. CommaGuide is an independent guide and is not affiliated with comma.ai or sunnypilot.
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