Ron.s

I tested this with my car for almost 10 minutes and had no issues. Car still running with the Air on. I didn’t lock the car and I took the key fob with me a distance of 80’. I see you left your key in the car.

bad habit

Does the MB remote come with a key? On my current vehicle I would leave the car running and lock it from the outside using my physical key which slides into the remote itself.

GregW / Oregon

Yes, but you have to open a cover on the back of the door handle.

Ron.s

While waiting for my wife shopping I tried with the key inside with the doors unlocked and again with the vehicle locked. Still no shut down.

beth22

I had that happen in my 2018 gle two weeks (ish) ago. They had to order some part because nobody could get it to go off, even with the key turned off and walking away from the vehicle. I don't know what part they got, but it fixed the problem. I could ask what it was ( I threw away the receipt/description).

DMG

Strange, on numerous occasions I would leave my wife in the car with our son because he was napping and I could not for the life of me keep the air running. I think if its in Park and I open and close the drivers door and leave it shuts the car off. I need to figure out my settings or take back to the dealer.

Ron.s

I did that exact thing and mine kept running. With or without the key inside didn’t matter. Opened the door after putting in park and closed the door, also left it open. Mine does an occasional weird thing or two randomly so there may be some software flaws that can be fixed. If enough of these get reported it might speed up a fix but I’m not expecting anything very soon.

Ron.s

Sorry Beth I was responding to a different problem. Didn’t turn mine off-the issue reported was one shutting off for no reason after leaving it running.

beth22

Ah, well, either way, these cars sometimes have a mind of their own!

Ron.s

Our Key Fobs now work less than 50% of the time using the touch to lock. So I went to the dealer and also added the issue that Lane Keep won’t stay turned off but reverts to on after a restart.
1. Active Lane Keep-Service Tech claims that all Mercedes with this function reset when the car is turned off. I thought that other Mercedes models did stay off until turned on again. Can anyone with an older model verify yes or no.
The Tech seemed competent but did not know that the 2020 corrects by braking. He was unaware of a Mercedes that worked that way so I might have a newbie. I can see this being a real safety issue at Freeway speed in the winter. The corrective braking to one wheel increases in intensity as speed increases.
2. The Key Fob misfired 5 times today but worked while at the Dealer. I’m now thinking that walking up the stairs jiggled it back awake. From past experience I think this will be a tough one to get resolved unless Mercedes already has a number of other complaints. I’m going to take some more videos to show the issue so that they can’t come back with a comment that they couldn’t duplicate the issue.

GregW / Oregon

While I know you are searching for answers, I have seen nothing to indicate there is any motion sensitivity built into the SmartKey. Even if the battery check light at the end of the fob flashes when you hit lock or unlock, I might start with replacing the CR2032 battery to eliminate one variable. Also, note the fob can be deactivated by pressing the lock button twice in quick succession. Pressing any button then reactivates it, so that is likely not the answer.

Ron.s

Did the battery and switched Fobs with my wife same results. And it went from occasional once or twice the first month to 5 times yesterday. Shaking the Fob works 100% of the time, I’ve done it more than 50 times....maybe 100. There may be a weak circuit or power connection or even a battery saver mode. Might find out when I take it in on the 23rd. The other thing I’ve noticed is that locking almost always works if I have been walking around. Drive somewhere, get out, won’t lock until I shake the Fob. Happens now more than half the time....yesterday every time! I thought it was crazy when another party posted that the Dealer told them to jump up and down.
Its become irritating enough that I have made videos and have an appointment with the dealer. I hate going to a dealer over a minor issue this early because they won’t have a clue. If no one reports issues then Mercedes won’t get involved with a fix.
My other reason for going is to get acquainted, because I think I’ll be back sooner than later. I continue to have minor random issues...one time each so far-hatch won’t open with the manual button had to use the Fob. Kick wouldn’t work that time either. Opened driver door after the car sat overnight and the Radio came on with the greeting. Another time I shut the car off and opened the door but MBUX screens still lit up. Random notice a window is open when they haven’t been opened or closed. I’m not complaining I knew the risk of ordering so early with a new Gen.

rominl

in my previous cars (including our current GL550), when the battery in the fob is getting low in power, shaking it helps recovers some of the charges. maybe it's worth changing the battery and see. but then again i would imagine the dash to have a warning message about low battery

Ron.s

Thanks, I had already changed the battery but didn’t clean the contacts so I did that this evening. The battery looks like it fits tight but if the contacts are contaminated shaking it might move it just a little. Doubt it will help because it always works in every other way.

bad habit

There could be a gap between the battery and contacts - I had that on my Nissan years ago, used a bit of Aluminum foil to fill.

DaveD9

Item 1. Same issue but here is a twist, my wife has the second fob in her purse. Engine shuts down 100% of the time when I get out of the car. This leads to a "why did you shut the car off? It's hot in here" conversation.

GregW / Oregon

Note that if you press the "A/C REST" button when shutting off the car it will use "residual heat" to condition the cabin for up to 30 minutes.

edofloat

Item 1. Not sure on the other questions, however, I have active lane keep in my current vehicle sans vibration in the steering wheel. I HATE that it uses the brakes to yank the vehicle back into the lane especially when I have Distronic features. This of course isn’t an issue when using the steering pilot with cruise. Why, why, why use the brakes when they could simply nudge the car using the steering? I keep mine turned off and it stays off thankfully.

GLE on order.

Ron.s

Do you have a 2020 or prior year Mercedes? The Service Advisor told me that all Mercedes vehicles reverted to on after a shut down. I find that hard to believe.
I had another unique experience the other day. Driving in the late afternoon the power cables cast a shadow to my right. The car thought they were a solid lane marker and my steering wheel became a vibrator. I changed lanes, I didn’t want it to start the brake correction in heavy traffic.

DMG

Interesting, when my A/C Rest button was not on, the air does not blow cold, so I leave it on. Maybe that's what is causing it? I will have to play around with it this weekend.

bob01

It stays off on my 2016 GLE (same w/ the 2012 GLE prev) - I was never comfortable with it in winter conditions - I'd turn it off until spring - it definitely stays (stayed) off.

Ron.s

I think my key fobs are fixed. I didn’t pay much attention one cleaning the contacts on the first one because I didn’t really think it would help. On the second Fob I noticed a very light tan discoloration so there was something there. Now both Fobs seem to be working correctly but I need a few days to make sure. I’ll probably post a thread with more detail since a couple of others had this same issue. This is apparently a new design and I had some trouble finding a video but it’s detailed in the manual.

edofloat

I have a 2017, it does not revert to a default. If I turn it off it stays off, if I turn it on it stays on. I keep it off and let distronic do the lane correction. I have had several software updates and there hasn’t been a change in three years.

The auto start/stop defaults to on each time, perhaps that is what the tech is thinking?

DMG

I couldn't agree with your wife more on the seats, they kill my lower back after a few hours. (They don't hurt my wife's back at all, just me.) I have played endlessly with the lumbar support and I think at the end of our last trip I've finally found something that might just work for me (although I won't know until the next trip), which is almost fully extended and at the bottom of the seat. Curious if any one else is having the same issue and found a good setting that doesn't involve a pillow.

GregW / Oregon

As I previously reported, my wife finds the Sport seats too hard, at least the back. I don’t like them as well as the ones in our ‘12 ML either. Haven’t taken a trip yet, but will in a couple weeks.