JLegitt
Hello, thank you for choosing our product and providing detailed feedback!
Regarding the issue with your steering wheel controls not working — you’ve already checked the wiring and tried different CAN types, but the problem persists. Please follow the steps below to further troubleshoot:
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1. Check if the CAN protocol matches your vehicle
In the “CAN Type” settings, please try selecting all available Nissan Altima options. The 2014 Altima may use different CAN protocols depending on the trim level. After changing the setting, be sure to restart the unit to apply the changes.
2. Try manual steering wheel key learning (for non-CAN vehicles)
If your Altima doesn’t use CAN signals for steering wheel controls, try going to Settings > Steering Wheel Learning (SWC). Tap a function on the screen, then press the corresponding button on your steering wheel to see if the system detects it.
3. Check the CAN decoder box model
If your unit uses an external CAN decoder box, make sure it is compatible with your vehicle. You can send us a clear photo of the CAN box and wiring labels, and we’ll help confirm.
4. Verify the steering wheel key signal wire connection
Some vehicles don’t use CAN for steering wheel control but instead rely on KEY1 / KEY2 wires. Please check if your vehicle has a steering wheel control wire and whether KEY1 or KEY2 is properly connected to the head unit wiring.
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Important Note:
There are two types of OEM radios for the 2014 Nissan Altima — one with steering wheel control wiring and one without:
If your OEM system does not have steering wheel control wires, you should use the harness without a CAN decoder box.
If your OEM system does have control wires, then a CAN decoder box is required, and the correct CAN protocol must be selected in the settings for it to work properly.
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If the issue is still unresolved, please provide the following information so we can assist further:
Clear photos of your CAN decoder box and wiring harness
The CAN type you selected in the settings
Whether your vehicle originally came with steering wheel controls (some base trims may not have this feature)
We’ll do our best to help you solve the issue quickly. Thank you again for your support!