Roman ACS

CDR will NOT work. It has no fiber-optic.

Roman ACS

Diamond button is lost from the steering controls.
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Larson E. Rapp

Wait, what? You lose the diamond button when the Mr12Volt module is installed, even if it's programmed for something unrelated to audio?

Roman ACS

The multifunction button does not operate with mr12volt. Not related to other car functions.
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Larson E. Rapp

I goitcha. So it can still be programmed to return to the gauge display in the multifunction cluster, then, just not to skip tracks or pause/resume or whatever.

Steph718

Just so I have this all straight, this is basically an auxilary addition to the car that needs to be selected and load? This isn't just get in the car and boom all set up ready to go?

zagamuffin

Hi Roman /lads

ive just fitted another Mr12v as it was a game changer in the Cayenne.my 2016 PORSCHE SPYDER has pcm3.1 on sound package plus.i didn’t realise it didn’t have most bus feed but found a video showing how to chain from HU to Mr12v blue box.Everything now working bar the following issues so if anyone can help maybe pinpoint the first area to check please.

Headunit resets on its own
video lost appeared briefly on driving cluster if sat nav screen live.
sound stops and restarts only if I switch to radio etc and then back
OEM rev cam doesn’t show on Mr12v screen, setting to one.works on std pcm modes

cheers

Roman ACS

I'll use my vehicle as an example. I have android. I set my phone to recognize the mr12volt and pcm as "safe" and so I don't have to unlock them.

In this setup, but I the android auto is booted and music is playing before I finish buckling my seat belt.

The system remembers your last use (Navi, Pandora, waze etc) so you boot right in.
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Roman ACS

Most often when pcm's reset on their own they are having a "bootloop" and issue. Often the failure is the hard drive. I'd hope pcm bootloop.
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