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Old 06-13-2019, 04:23 PM   #11
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Default Re: Programable Special Module ( PSM )

For the new ones, MB seems to want everything extra (buildouts, aftermarket, alarms) to be run through the psm. The keeps the OEM system intact and an easier way to triage issues later. High idle can also be enabled though the psm.

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Old 06-15-2019, 02:03 AM   #12
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Default Re: Programable Special Module ( PSM )

I would not buy a sprinter without the PSM. Far too handy for a build out.

MB usually touts that the PSM is too expensive to add - on. I am glad to see that some people have successfully done it.
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Old 06-15-2019, 02:57 AM   #13
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Default Re: Programable Special Module ( PSM )

Quote:
Originally Posted by GaryFromWork View Post
I'm curious about this as well. I'm building my van and trying to determine if this is something I might need. It seems to only be required for turning on circuits given certain actions (door opening, etc).
I was afraid of the Sprinter electrical system so only had one connection to the vehicle. The only connection to the Sprinter electrical was the vehicle powered inverter. That was installed by copying the wiring that the Sprinter used to power the optional aux. battery. Instead of powering the aux. battery it powered the pure sine inverter.

Did not even ground the house battery to the chassis for the house electrical system. Since I was not charging the house battery by directly connecting it to the vehicle battery, the house system could be independent from the vehicle. System worked well for over 10 years without any issues. Transit conversion is 4 years old and also has the house system isolated from the vehicle system and have not had any issues with that design.

Maybe someone who is knowledgeable about the PSM module should explain how it can be used.
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Old 06-15-2019, 05:52 PM   #14
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Default Re: Programable Special Module ( PSM )

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Originally Posted by Graphite Dave View Post
Maybe someone who is knowledgeable about the PSM module should explain how it can be used.
There's this long thread: https://sprinter-source.com/forum/sh...ad.php?t=24538

(and this shorter one: https://sprinter-source.com/forum/showthread.php?t=866 )

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Old Today, 03:52 AM   #15
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Default Re: Programable Special Module ( PSM )

Quote:
Originally Posted by Graphite Dave View Post
My sold 08 was ordered with the PSM module. Built a full conversion and never used the PSM.

What functions of the module do you need?
I was thinking of using it to control the step on the pedestrian door of a mobile home, flash turn indicators and side markers when reversing. I am going to try to convert the park brake to electric, maybe use it to control brake???(MB would not fit one to a 4.5 tonne cab chassis when purchased), my unit will weigh less than 3.5 tonne when completed. I could also use it to incorporate the central locking to control the pedestrian door lock.
These units also have logic functions that can be used in conjunction with any CAN BUS signal to perform almost any switching combination anyone can think of.
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