Okay after investing an insane amount of time and a few bucks to have Sirius Satellite Radio play through my factory Nav unit (just like our US brothers and sisters) I have some
good news and some
bad news.
The bad news first - the MMCS communicates with the satellite tuner via the CAN Bus. This is a very slick communication protocol that has been around since the mid-80's but is just now being adopted en masse by car manufacturers and in fact is mandatory for 2008 and beyond.diagnostic testing. Why is this bad news? Because the tuner itself must be CAN compliant which there are zero, nada, none available with the exception of late model Chrysler vehicles.
So I ordered a Chrysler tuner for an 07 Magnum to see if I could figure out a way to get it to work. My reserach into Chrysler's CAN communication protocol discovered it was not proprietary - GREAT news! (Some manufacturers have opted for proprietary communication protocol on the CAN Bus). CAN communciates by sending digital 1's and 0's over twisted pair wiring - it is very simplistic. There is a tonnes of info available on the net about CAN decoding on Chrysler and in particular SIRIUS decoding!
So I was feeling extremely optimistic at this point that I would be able to get this to work. Got the tuner and antenna all wired up, (already had my CAN Bus activated for Sirius so the option now shows up on my head unit), turn the key on, push MODE button, select SIRIUS and..........
NADA - Antenna Error Detected! WTF?!?!?
Did some more research and discovered the Chrysler signal is actually decoded backwards on the Chrysler CAN Bus. DAMN.
So, the only way to get this to work is to actually get a hold of a Factory SIRIUS tuner, run it through a tool called a "data logger" which will display all the data bits the MMCS uses and then compare them the the Chrylser data. Once this information is known, a software interface could be written to get the data rearranged into a format the MMCS can use.
I am not a programmer and I've taken this as far as I can so if anyone else is interested in pursuing this option, PM me and I can share what I know.
BTW, Chrysler did take back their tuner they so kindly "lent" me for the weekend.
Alright, so what is the good news? The Mitsubishi factory tuner (Part # 8701A103) will be available in July, despite what Mitsubish Canada officially is saying. It is bloody expensive though. The best price I could find is $950 Cdn!!!!!! I also found a supplier in Japan - pricing is 113,000 Yen ($938) so the NA dealer price is pretty good. You will also need to find a "friendly" dealer who will change the option coding on your CAN Bus to recognize SIRIUS.
And for anyone thinking they'll just wait for an aftermarket solution like "SiriusConnect" or what have you, most auto manufacturers that have Sirius agreements also get exclusive rights to manufacture the tuner so looks like we are SOL there as well.
So, in the end if you are looking for a cost effective install solution that looks great, check out BoldyGoingNowhere's very cool installation
here: