My GPS shows I am in NY, however, I am in Texas. I went into Mercedes Service and I was told, it might require a software update, however, the software update might crash the command and if it does, I am responsible for the fix. WTF?!!! Anyone ever experienced the same?

I thought it might be an antenna issue, however, I was told differently.

I spoke to my regular dealership back from when I lived in Illinois, the best dealership who I have ever dealt with and was told, if the command crashed as a result, they would contact their rep and have it covered since it would probably be outside of the $3500.00 dealership threshold, however, the dealership here in Arlington, Texas just flat out said, I would be on the hook for there f*ckup for crashing the command.

Thoughts anyone?

Model year and miles on car?

My thoughts are every that dealership can be wildly different, get this done in Illinois and just use your iPhone for GPS until then. No need to trying to make sense of a nonsensical situation, you've done enough due diligence.

It's not adding up. Is it a 2018 as your sig says? If so, it's not MBUX. It would make sense then that they are saying something like, "You probably need a new head unit, but we can try a software fix; however a head unit that old might just crap out trying to be updated. Your choice."

If, on the other hand, it's MBUX you have a much newer car and it should be on warranty, so no way you're responsible for anything.

Get in touch with BenzNinja, they are specialized in this too: https://benzninja.com/mbw/

2018 and just hit 90,000.00

Yeah, my Illinois service advisor said just use my apple carplay since the command sucks and since the dealership by my is not cooperating.

I amended my post. Should have said command, not MBUX. The service advisor kept saying command so it stuck in my head.

Your system is several generations behind now. Not only is it COMAND, but you are also on the end of life mBrace platform. If there's indeed a software update and the system doesn't take it for some reason and ends up bricked, that's not automatically a f*ckup on the dealership's part. It's old software that MB isn't really maintaining anymore. My slightly newer COMAND system has developed an odd software bug after 5 years and there's no update. Dealership re-flashed the same version that was already on it, but it didn't fix it. Then I had BenzNinjia reflash the digital instrument cluster, which also didn't fix anything. Nothing bricked and the bug isn't all that annoying, so I'm living with it for a now. There's little chance of getting a software bug fixed at this point, unless a future map update comes with a new firmware that happens to fix it. I'm not entirely sure your original dealership will get anywhere with the rep to cover a new head unit on a 7 year old car. It's all just talk at this point.

No problem, but it confirms my suspicion that you need a new COMAND (one N) head unit and a software is unlikely to fix anything. It's probably the GPS module, if they've confirmed the antenna is good and the head unit is getting sat signal. That's the price for a new one, unfortunately. I think the dealer was being up front with you, but probably could have explained it better.

I also suspect your problem is head unit hardware. A bug "developing" in installed software is not normally a thing. A hardware failure that looks like software is. What's the bug?

After the car is parked for a while it switches to km from miles and the instrument cluster resets to the Sport layout when I normally have it in Supersport. Somebody suggested that the flash memory could be failing in the instrument cluster, but there's at least one other person with the exact same behavior. For flash memory to fail and affect the exact two settings in two different cars is a quite a coincidence.

It's not that the software hasn't been touched over the years. I get map updates twice a year and some map updates as a understand it come with a firmware update. So a software bug is not out of the question. As a software developer myself, I would agree with you if nothing had been update over the years and suddenly and issue develops, but my system is not running the same software and data anymore that it originally shipped with.

Problem is even if it is hardware, I don't know if it's the cluster or the head unit. The unit of measure setting is only in the head unit, but the cluster reflects it and the design layout can be changed in both the cluster or the head unit settings. Until one of the two clearly fails I'm not inclined to replace either one on a whim. Since I don't drive the car every day, having to fix these two settings every time I drive it hasn't been too annoying to the point where I'm ready to spend a ton of money to try to fix it.

You're talking about the C-class, right? I don't believe it has personalization like the E-class, but both of those settings are captured in profiles. I have had my profile changed by an over-the-air update and had to reset it to mine to fix a few things. I wonder if there is some vestige of the personalization code in the C-class that messes with your profile? But I'd still bet on some non-volatile memory somewhere.

Yes, it has personalization and yes that was one of my suspicions as well. I've recreated the profile multiple times, but I still think there's something messed up with it. The personalization in NTG 5.5 never worked right. They've redone it a couple of times and at one point I read it was getting discontinued, but it's still part of the subscription. I still suspect that something in the personalization data got corrupted along the way. One thing I'm considering is letting my subscription run out this year. It's up for renewal in September, then remove the car and add it back fresh. There are some other oddities I get in the Mercedes app. For example it shows my car as model year 2021 when it is a 2019.

Prob best just to leave it a lone at this point. Going to trade it in soon anyway. Thanks for your input.

Facts! they could have explained it better. Thanks the explanation.

Have you tried creating a new profile and switching to it? It will use new flash memory for the settings. Of course, it will copy them to the block used by the cluster and head unit, so it might not change anything. But it would be worth the experiment, I'd think.

Yes, I have. The guest profile also has the same issue. I've tried creating a new local profile and recreated the online profile. I actually had the personalization services turned off for a while as well and only used a local profile. So yes, unless the settings get copied to the exact same block regardless of what profile is being used, then memory failure is increasingly less likely. My car is also somewhat unique in that I've done European delivery, so it was coded one way while in Europe to support EU maps etc., and then recoded for North America. It has two VINs as well. One for Europe and one for North America. I wonder if somewhere something isn't quite lining up due to that. Interestingly the other person I know of who has the same issue is in the UK, so it could be something with the coding for Europe and I've got potentially some leftover coding in mine. When I feel like hooking up XENTRY one of these days I was planning on poking around and see if there's a region or default setting that I can find that potentially is incorrect. We did actually find a coding discrepancy after reflashing the instrument cluster, but it doesn't seem to make a difference.

^^
All that profile stuff drives me nuts, I have gremlins too and not sure how/why stuff just randomly changes. For example Driver's Dynamic Side Bolsters always turns off on their own. I remember when a new passenger says "You're car just hugged me!" and I thin "It shoulkd be hugging me too" and go turn it back on. I have no idea why it resets, only for driver.

There's more that just changes too. I just gave up and flip it back when something changes.

Oh and this is with MBUX so they haven't really done anything about it

Thank goodness the car is fast.

Laughed so hard I spit coffe on my keyboard....thanks for providing perspective