Use this article if…
- You're deciding between a wired SWC adapter and the PVS wireless module before you order.
- Button mapping setup → Setting up button mapping. MK4 → MK4 steering.
Quick answer
LC70, 80, 100 and 200 Series steering wheels all use two-wire resistor-based controls. Your headunit decides which way you go: a wired adapter if it reads them directly, the PVS wireless module if it doesn't. The MK4 reads a factory LC70 wheel directly on pins 6 and 7, and where a headunit has no wired steering control input the wireless module works with any of them.
Problem
- You want to know whether your headunit can connect to the steering wheel directly with a wired adapter, or whether you need the PVS wireless module.
Symptoms
- You're not sure which product to order before you buy.
- Your controls don't work after a wired adapter was installed.
Cause
- LC70, 80, 100 and 200 Series LandCruisers all use resistor-based steering controls: two wires from the column. Whether you can use a wired adapter or need the wireless module depends on your headunit, not the vehicle.
Fix Step-by-step
- Your LC70, 80, 100 or 200 Series steering wheel uses two wires: a signal wire and an earth. Each button press sends a different resistance value, which tells your headunit what you pressed. That's the same across all these models.
- Check whether your headunit has a wired SWC input. Some aftermarket headunits (Alpine, Pioneer, Sony, Kenwood) have a physical SWC port on the back that reads these signals directly with a wired adapter. If yours has one, check the wiring diagram for your brand in the PDF downloads on the support page.
- If your headunit doesn't have a wired SWC port, or the controls still don't work after wiring, use the PVS wireless module. It reads the steering wheel signals and sends them to your headunit wirelessly, so it works with any headunit whatever ports it has.
- PVS MK4 and other Android headunits. If you're keeping the factory LC70 wheel, the MK4 reads it directly. The two key lines are already on the main plug, pins 6 and 7, and the factory clock spring stays in the car. Wire it in, then run the learn sequence. The PVS wireless module is what ships with a PVS steering wheel kit, and it comes pre-paired from the factory, so that one is wire in and learn too.