Electrical module
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Terrific, thank you for the insight. Final question..... is the MB Diagnostic terminal exclusive to dealers only? Or would you find quality indy shops with them?
Last edited by Mike5215; Nov 17, 2015 at 09:39 PM.
Somehow, I don’t think it’ll fix the Nite Vision, and clock issue…… but maybe I’ll be in for a pleasant surprise.
If one device fails, it will cause a cascade of failures in the other devices because the ring is no longer closed. If it's a device you don't use anyway, like Sirius radio for example, you can just bypass it entirely and close the loop.
I would start with a visit to a shop with an MB diagnostic terminal. The car will report which device has failed, then you can decide how best to proceed. It may be the amp but any device in the loop that fails...or blows a fuse...will cause the "device unavailable" error.
If one device fails, it will cause a cascade of failures in the other devices because the ring is no longer closed. If it's a device you don't use anyway, like Sirius radio for example, you can just bypass it entirely and close the loop.
I would start with a visit to a shop with an MB diagnostic terminal. The car will report which device has failed, then you can decide how best to proceed. It may be the amp but any device in the loop that fails...or blows a fuse...will cause the "device unavailable" error.
A221 905 5200 SWITCH BLOCK
A2219055200 - Switch assy lower, w/o aux heating
Wherever you take the car next, ask the service technician to provide you with a screen shot of what the DAS/XENTRY terminal presented as the error codes.
If you are considering trading in your car, I would recommend a 2012 or newer to get more years of warranty, even though, that time line is getting shorter all the time. A 2010, if it has a service date of sometime in 2011 would still have the baseline MB warranty, if the miles were within spec, and 1 year of CPO-based warranty, if you purchased a CPO'ed car with low miles.
Wherever you have your car now or take the car next, ask the service advisor and/or technician to provide you with a screen shot of what the DAS/XENTRY terminal presented as the error codes and the recommended repair procedures - as the DAS/IXENTRY workstation will present that information to the technician. Once you have that, post a pic here and maybe some of the forum members who are technicians may chime in.
Last edited by Nuru; Nov 24, 2015 at 11:59 PM.






