Upgrading "run flat indicators" to true TPMS in 2015 ML350 BT
This ML just has (as I'm told by the dealer) a rudimentary system that detects a flat or reduced pressure by the increased number of tire rotations as a tire that is lower in pressure, hence slightly smaller, will spin faster than the rest. The system doesn't even tell which tire, just that one (or more?) has a lower pressure/is flat.
I understand there is a full MB TPMS system available that reads individual pressures, etc. but that would have to be an upgrade to my current system. Can this be done after the fact?




Thanks for your reply.

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Reminds me of the time that I wanted to install fog lights in my R500 Saks Edition. Dealer said that I need a new harness, quoted list for all of the parts and a significant charge for programming to make them work, coming to over $1k. After a bit of searching on the R class forum, I bought a used headlight switch with fog button and two lights on eBay, discovered that the harness was all there right up to the bumper, and had a local guy program the car to see that the car now had fogs. All in all it cost about $275 and while I did not need fog lights, I considered it a diverting project for an afternoon. The point is that you don't know until you search the various forums and ask questions. Certainly not up to me to decide whose wants are valid or what questions are "asinine," but what do I know about how to behave in public?
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Diabolus, why should you give a crap what anyone wants to put on their vehicle? If answering a legitimate question responsibly is not in your realm of understanding then perhaps silence would serve us all better. To paraphrase your reply, "If you have a deflated brain and can't tell simply by the way you think, you've got bigger problems and should probably surrender your pen."

Sure, if you have the time, knowledge, tools (including Vediamo), parts and are willing to void your vehicle warranty in the process (and did I mention money to burn?), then yes, you may be able to retrofit it or pay someone else to do it for you, but for those of us that just need a reliable car to drive instead of a "project" or to simply satisfy a curiosity and /or a desire to learn, attempting to install a factory TPMS retrofit to a current model ML is still an asinine idea.
Sure, if you have the time, knowledge, tools (including Vediamo), parts and are willing to void your vehicle warranty in the process (and did I mention money to burn?), then yes, you may be able to retrofit it or pay someone else to do it for you, but for those of us that just need a reliable car to drive instead of a "project" or to simply satisfy a curiosity and /or a desire to learn, attempting to install a factory TPMS retrofit to a current model ML is still an asinine idea.
There are numerous threads that detail retrofitting distronic plus and other collision avoidance tech on w166 and x166 models that require coding at the dealers.
Some dealers are hesitant. Others are more than willing to work with you.
If you want to get the tpms. Go for it.
https://mbworld.org/forums/m-class-w...-lighting.html
P.S. Allow me to reference a key post (#81 - five or so back from the latest one) by the OP in the thread you linked:
https://mbworld.org/forums/m-class-w...ml#post7490928
This only proves that even a "shady" dealer in Spain that is willing to tinker with a customer vehicle can't add SCN coding that wasn't present on that particular vehicle VIN. Again - please show me ONE post that shows anyone doing this successfully without hacking it with Vediamo (which would by definition void any manufacturer warranty).
Last edited by Diabolis; Sep 27, 2018 at 09:41 AM.


