These instructions apply to the Porsche 911 Mk8 (992) 2019-Present.
For other models, please choose your vehicle here.
If the PCM touchscreen in your Porsche 911 (992, 2019–Present) has frozen, gone black, or stopped answering taps, you can force it to restart yourself in under a minute — no dealer visit, no tools, and without losing a single setting.
Which PCM is in your 992
The 992-generation 911 runs PCM 6.0 — Porsche’s Android-based 10.9-inch central touchscreen with the two configurable instrument-cluster displays either side of the analogue rev counter. It is a far slicker system than the PCM 4.0 in older cars, but like any computer it can still lock up: a stalled CarPlay session, a flaky Bluetooth pairing, or a software hiccup can leave the screen frozen or stuck on the Porsche crest. In almost every case it is a software lock, not dead hardware, and a forced reboot clears it.
Soft reset (reboot) the PCM
Do this parked, with the ignition on so the unit keeps its power.
- Find the volume knob directly below the centre touchscreen (it doubles as the on/off control).
- Press and hold the knob — keep pressing straight through the point where the audio mutes.
- After about 10–15 seconds the screen goes black.
- When the Porsche crest appears, release. The system is rebooting.
- Wait 45–90 seconds for the home screen to reload; audio, navigation and paired phones return on their own.
If the touchscreen still responds but the rest of the system is hung, you can reach an engineering reboot menu: press and hold two fingers in the top-right corner of the screen (over and just left of the clock) for a few seconds until the display switches to a service menu, then tap Reboot to normal mode. On PCM 6.0 you confirm with a finger tap — no rotary dial needed.
Will this erase anything? No
The reboot is completely safe. It does not wipe your radio presets, navigation favourites, driver profiles, or paired phones — it simply restarts the head unit’s software, exactly like restarting a phone. Use it whenever the PCM misbehaves.
If the PCM stays frozen
- Hold longer. If 15 seconds did nothing, try again and hold a full 20 seconds before releasing at the crest.
- Let the car sleep. Switch off, lock it with the key, and walk away for 15 minutes so the electronics fully power down; then unlock and restart.
- Don’t select reverse mid-reboot. Engaging R throws the reversing camera onto the screen and can interrupt the restart — let it boot fully first.
- Check for a software update. Porsche has issued several PCM 6.0 builds across the 992 run; a dealer or the over-the-air update can flash the latest if yours freezes repeatedly.
Factory reset (erases data — rarely needed)
A factory reset is separate from the reboot and only worth doing if you are selling the car or chasing a deep, persistent glitch. Tap the Settings (gear) icon, scroll to the bottom and choose Factory reset / Reset to delivery state, then confirm the “erase all personal content” prompt. It erases presets, profiles, paired phones and navigation history, so only do it deliberately.
Frequently Asked Questions
Does the 992 use PCM 6.0 or the older system?
Every 992-generation 911 uses PCM 6.0, the 10.9-inch touchscreen system. The 991-generation cars before it used PCM 4.0; the reboot control (the volume knob below the screen) is in a similar place on both, but the two-finger engineering menu is a PCM 6.0 feature.
Will I lose my radio presets or CarPlay pairing?
No. The volume-knob reboot keeps every preset, navigation favourite, driver profile and paired phone. Only the menu-driven factory reset clears them.
The screen is stuck on the Porsche crest — what now?
A unit looping on the crest usually needs a full power-down. Hold the volume knob 20 seconds; if it still loops, lock the car and leave it 15 minutes, then restart. Persistent boot-loops point to a software update being due.
Is it safe to drive with the PCM frozen?
Yes. The PCM is separate from the engine and driving systems — you only lose audio, navigation and CarPlay. Reboot once you are safely parked.
My CarPlay keeps dropping on the 992 — is that the same fault?
Often, yes. Wireless CarPlay drops are a common PCM 6.0 niggle. Reboot the PCM first; if it persists, delete the phone under Settings → Devices and re-pair it, and make sure the PCM software is on the latest build.
If a warning light or fault message stays on the dash after the reboot, it may have stored a diagnostic trouble code — you can look it up on autodtcs.com.
Independent guide — not affiliated with Porsche. Always follow your official service manual and safety precautions. Read our full disclaimer.