Use this article if…
- General (any vehicle), your steering buttons are dead after a wheel or radio upgrade.
- MK4 only → MK4 steering not responding. Learn the basics → SWC pairing.
Quick answer
Check you've got power at the wheel first. On a wireless kit the transmitter behind the wheel runs off the horn circuit, so if your horn's dead, the buttons are dead too. If the wheel buttons light up with the parkers on and you see the receiver solid red, the fault's at the headunit end: re-enable SWC in its settings, then re-learn the map.
Problem
- Your steering controls are dead after a wheel or headunit upgrade.
Symptoms
- You get no response from the volume, track or voice buttons on your upgraded wheel or headunit.
- You turn the parkers on and the wheel buttons don't light up.
- It worked once, then nothing after you ran a firmware update or disconnected the battery.
- Only some buttons are dead, the horn still works.
Cause
- No power at the wheel. On a wireless kit the horn circuit powers the transmitter behind the wheel. If your horn doesn't work, or the module's power lead isn't on the horn feed, the buttons stay dead no matter what the headunit does. That's the most common cause on a wireless kit. If you see the receiver flashing, that doesn't rule it out, because the receiver runs off the headunit's own supply.
- Headunit SWC input disabled in settings, the most common cause on a wired setup.
- Button map not learned, or cleared when you disconnected the battery or ran a firmware update. This doesn't apply to the Alpine variant of a PVS kit, which has no learning step.
- Pinched or unplugged SWC wire somewhere between the steering column and the headunit.
Fix Step-by-step
- Start with two checks that tell you where the fault is in a minute. With the ignition on, is the receiver module behind the headunit lit solid red? With the ignition and the parkers on, do the buttons on the wheel light up? If the wheel buttons stay dark, you've got no power at the wheel: confirm the horn works, then confirm the module's power lead sits on the horn feed shown in your wiring diagram.
- If the wheel end is alive, open your headunit settings and check that steering wheel controls are enabled. On Pioneer and Sony units a factory reset can turn this off. Turn it on, then save.
- Run the learn sequence from scratch: clear any old map, then re-learn with the engine running. See Setting up button mapping for step-by-step instructions. PVS modules ship pre-paired, so you've got nothing to pair between the two modules, and the Alpine variant needs no learning at all: it works as soon as you plug it in.
- Check the wiring connections: make sure the SWC wire from the module is plugged into the headunit's SWC input, and that nothing got pinched behind the dash while you were fitting it. Fitting a PVS wheel to a 70 Series, you don't reuse the factory brown plug at the column: unplug it and use the harness on the new wheel. If you're left with factory connectors and nothing to plug them into, that's normal, not a missed step.
- If you've done all of that and it's still dead, email us with your headunit brand and model, your vehicle year, and photos of both ends with every lead in shot.
Notes
Horn booster install video
Your wireless transmitter runs off the horn circuit, so this video shows you how the horn booster and the original horn wire connect at the back of the horn pad.