MK4 How-to Guides
Pick the job you're doing on your PVS 9 inch MK4 head unit, follow the steps, then get back to driving. Fault finding sits on the Headunits hub.
Wiring Diagram & Manual
Fitting the Unit
1 articleApps & Downloads
3 articles- How to Install an App on an Android Head Unit Set up the Play Store and your Google account, and fix sign-in on an out of date unit.
- How to Pair a Bluetooth OBD2 Adapter to an Android Head Unit Pair the adapter in Settings first, because the app can't find it until you do.
- How to Install and Set Up Torque Pro on an Android Head Unit Get live engine data on the dash: pair the adapter, then set Torque to Bluetooth.
Phone & Connectivity
4 articles- How to Switch Between Apple CarPlay, Android Auto and HiCar Your unit opens in CarPlay mode, and the PVS Link app is where you change it.
- How to Get an Android Head Unit Online Get online three ways, a SIM in the unit, WiFi or Starlink, or a phone hotspot, all from one setting screen.
- How to Run CarPlay at the Same Time as Starlink or a Hotspot Your phone's WiFi radio joins one network at a time, so wired CarPlay frees it for Starlink.
- How to Set Up Hands-Free Calling and Fit the Microphone Pair over Bluetooth, then mount the supplied mic close to the driver, because where you put it decides call quality.
Audio & Amplifiers
4 articles- How to Choose the Right Audio Output on an Android Head Unit Pick the output that suits an amplifier or a processor, and what the 4 volt pre-out gives you.
- How to Connect an External Amplifier to an Android Head Unit Front pre-outs on Harness A, rear pre-outs on Harness C, turn-on lead on the blue wire at A1.
- How to Add a Subwoofer to an Android Head Unit Add a sub on the dedicated A16 output, a pair of green RCAs separate from the four pre-outs.
- How to Connect a DSP Using the Digital Audio Output Pick optical SPDIF on the rear panel or coaxial SPDIF on C6, whichever your DSP has.
Cameras & Vision
2 articles- How to Set Up a Reverse Camera on an Android Head Unit Wire a factory or aftermarket camera, and set the format that fixes a black picture.
- How to Add a Second Camera for a Trailer or a Front View Wire a second camera to the aux video input on A18 and switch to it yourself, because reverse leaves A18 free.
Steering Wheel Controls
1 articleSetup & Maintenance
3 articles- How to Update the Software on an Android Head Unit Format the drive FAT32, and know what you get back after the update's factory reset.
- How to Factory Reset an Android Head Unit and What You Lose Settings, System, Reset wipes your apps, logins, pairings and settings, so prepare before you tap it.
- How to Check Whether a Head Unit Is Draining the Battery Two supplies, permanent and switched, and a current draw test at the fuse tells you in ten minutes.
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