M-Class (W166) Produced 2012-2015

What to do with Keyless Go keyfob when surfing, diving, exercising?

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Old Jul 9, 2021 | 07:37 AM
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Question What to do with Keyless Go keyfob when surfing, diving, exercising?

Hi all.

Can't seem to find any reliable information on this question? What to do with Keyless GO keyfob when going surfing, diving or exercising.

I have seen suggestions that you can take the blade key with you, lock the car, and leave (or hide) the keyfob in the vehicle and also hide the start stop button, and then come back and use the blade key to enter the vehicle.

When i tried this it seemed to likely work, except for two things;

1. When i open the ML with the blade key the alarm goes off instantly until i retrieve the keyfob and press unlock. Ok, so not a complete deal breaker, but kind of annoying.
2. With the keyfob and start stop button hidden away in the vehicle, if you actually pull a little on the drivers handle, you instantly see the dashboard light up with a message, keyfob not detected. So ok again in itself maybe not such an issue, BUT

... this doesn't happen when you lock the car as per normal and there is no keyfob in the vehicle. Therefore if there is a knowledgable pass-by potential thief, he/she only has to pull on the drivers door handle a little and they will know that the keyfob is in the car somewhere. Then all they have to do is break into the car somehow (smash a window or equivalent) and they know they will be able to drive the car away.

What do others on here do? Is there something i am missing?

Thanks in advance.
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Old Jul 9, 2021 | 08:29 AM
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I carry my keys with me. I do not use the star button either, it is in the house, I put the keyfob in the slot. No question on where to put the keyfob then
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Old Jul 9, 2021 | 09:30 AM
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Thanks. Looking for options for when going swimming or diving or something and carrying keys with you is not an option.
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Old Jul 9, 2021 | 10:10 AM
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You could disable the fob and leave it in the car and use the metal key as you describe.
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Old Jul 9, 2021 | 10:36 AM
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Originally Posted by decorily
You could disable the fob and leave it in the car and use the metal key as you describe.
Normally one presses fob's lock button twice to disable the keyless function. Is that what you mean?
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Old Jul 9, 2021 | 10:42 AM
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Below is a link with a couple of waterproof solutions to keep it on you while surfing and diving. As for exercising, I use a waist pack when going on a bike ride to hold my extra water bottles anyway, so the key, wallet etc. just goes in there. Also works for running. Generally have to bring water anyway. Otherwise my gym has lockers, but I walk to and from my gym, so keys and wallet stays at home. I have keypads to unlock my house and garage.

https://www.theinertia.com/environme...d-controversy/

Last edited by superswiss; Jul 9, 2021 at 10:48 AM.
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Old Jul 9, 2021 | 10:59 AM
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Originally Posted by threeMBs
Normally one presses fob's lock button twice to disable the keyless function. Is that what you mean?
Yes. ..I keep a spare key in my car at all times in case I lose my key while the car is locked and parked away from home.

Last edited by decorily; Jul 9, 2021 at 11:14 AM.
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Old Jul 9, 2021 | 11:20 AM
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Originally Posted by decorily
Yes. ..I keep a spare key in my car at all times in case I loose my key while the car is locked and parked away from home.
So carry a fob A with a metal key inserted and an other metal key (from fob B which is in the car)? Might as well carry both fobs in different pockets.

Once my fob got "bad" (great that it happened at home and the second fob was immediately available) and had to be replaced by the dealer. Happened only once in over two decades of owning multiple MBs with these key fobs (dealer said it does happen). Since then, I carry both key fobs.

BTW I tried the procedure that OP explained in my US MY2015 ML63. It does NOT do any of what OP described:

A. metal key only locks driver door, it does not lock other doors (had to lock other doors individually or via driver door inside car lock button with driver door still open), nor sets alarm ON, nor folds mirrors, so when I opened the driver door with the metal key alarm does not go OFF (since it was never set to be ON). I tried it both with the fob left inside the car and outside and out of range.

B. more to the point, there is no message of any kind displayed when I pulled the driver door handle.

C. The only way to set the alarm ON is to lock the car with the fob with driver door open (press once or twice does not matter). Once driver door is locked with the metal key and then later on it is opened via the same metal key, the alarm does go OFF because it was previously set via the fob.

Last edited by threeMBs; Jul 9, 2021 at 11:30 AM.
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Old Jul 9, 2021 | 11:34 AM
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Originally Posted by threeMBs
So carry a fob A with a metal key inserted and an other metal key (from fob B which is in the car)? Might as well carry both fobs in different pockets.

.
No.....if I lose the fob I can open the car (not M class) online and reactivate fob to start car.
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Old Jul 9, 2021 | 11:48 AM
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Originally Posted by decorily
No.....if I lose the fob I can open the car (not M class) online and reactivate fob to start car.
Even better - carry no fobs. Unfortunately remote door opening not possible with ML (I think this possibility for W166 started with '17 GLE). But if doors can be opened remotely then why not start car remotely as well, which of course you can via Mercedes Me? Or will the car shut down if attempted to drive without a fob hence why you leave fob inside?
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Old Jul 9, 2021 | 12:07 PM
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Originally Posted by threeMBs
Even better - carry no fobs. Unfortunately remote door opening not possible with ML (I think this possibility for W166 started with '17 GLE). But if doors can be opened remotely then why not start car remotely as well, which of course you can via Mercedes Me? Or will the car shut down if attempted to drive without a fob hence why you leave fob inside?
I believe if the car is started remotely it will shut off when the door is opened and must be restarted
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Old Jul 9, 2021 | 12:10 PM
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Originally Posted by decorily
I believe if the car is started remotely it will shut off when the door is opened and must be restarted
Makes sense.

Edit, taking it a bit further. (I do not use remote anything and have no clue, so forgive me). Once the vehicle is remotely unlocked (but not started), then once inside can you remotely start it and will the vehicle shift out of park? If yes, then one does not need a fob in the car at all (yes it should be there just in case, but what I am saying is that it may not be required).

Last edited by threeMBs; Jul 9, 2021 at 01:03 PM.
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Old Jul 9, 2021 | 01:25 PM
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Originally Posted by threeMBs
Makes sense.

Edit, taking it a bit further. (I do not use remote anything and have no clue, so forgive me). Once the vehicle is remotely unlocked (but not started), then once inside can you remotely start it and will the vehicle shift out of park? If yes, then one does not need a fob in the car at all (yes it should be there just in case, but what I am saying is that it may not be required).
I have no clue either! !

Have used the app on one occasion to open the doors when I got tired shopping before my wife and headed back to the car to discover she had the keys in her purse.

Pretty much like most of the other high tech stuff in the car.....rarely if ever used! !
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Old Jul 9, 2021 | 01:46 PM
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Originally Posted by threeMBs
Makes sense.

Edit, taking it a bit further. (I do not use remote anything and have no clue, so forgive me). Once the vehicle is remotely unlocked (but not started), then once inside can you remotely start it and will the vehicle shift out of park? If yes, then one does not need a fob in the car at all (yes it should be there just in case, but what I am saying is that it may not be required).
No, you can't drive the car when started remotely. Remote start only works if the car is locked and is only intended to cool or heat the interior in advance. As soon as the car is unlocked the engine stops and it can't be remote started unless the car is locked again first. Also, the engine only runs for 10 minutes if you remote start it and then automatically shuts off. In order to drive the car you need an authorized fob. This is partly for security, so nobody can hack the system essentially and drive off with your car. American cars work a little different. They allow you to remote start the car, and don't shut the engine off when you unlock and/or open the door, but you can't drive off unless you have the fob on you and you have to press the start engine button again before you can shift it out of park. The only remote start solutions that I think actually let you drive the car are aftermarket solutions which require you to scarifies one of the key fobs. Basically the remote starter becomes your second key fob and therefore is fully functional, but that also means if somebody hacks it they can drive off with your car.
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Old Jul 9, 2021 | 02:12 PM
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Originally Posted by superswiss
No, you can't drive the car when started remotely. Remote start only works if the car is locked and is only intended to cool or heat the interior in advance. As soon as the car is unlocked the engine stops and it can't be remote started unless the car is locked again first. Also, the engine only runs for 10 minutes if you remote start it and then automatically shuts off.
Great info, thanks.

Now if only I can find out what ID my car was "paired" to (and by whom). Bought my '19 GLE two years ago, brand new, never connected to Mercedes Me nor created an ID. Just now downloaded App, created ID and when tried to pair to the car, App says car is already "connected/paired" to an ID (obviously not the one I just created) and that it can be "associated" with only one ID.
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Old Jul 9, 2021 | 03:59 PM
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Originally Posted by threeMBs
Great info, thanks.

Now if only I can find out what ID my car was "paired" to (and by whom). Bought my '19 GLE two years ago, brand new, never connected to Mercedes Me nor created an ID. Just now downloaded App, created ID and when tried to pair to the car, App says car is already "connected/paired" to an ID (obviously not the one I just created) and that it can be "associated" with only one ID.
As far as I know, you have to stop by a dealership to transfer the car to your account. You can't do that yourself as proof of ownership is required. They have to activate the services for you and once it's past the initial complementary 3-years then you have to purchase a subscription.
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Old Jul 9, 2021 | 04:57 PM
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^^^Thanks!
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Old Jul 10, 2021 | 09:28 AM
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Speedo key pocket

My Speedo swim trunks (not the bikini style) have a waterproof pocket.
I take them with me if there's a chance of doing watersports.
I can handle that level of tech.
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