Auto lock








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- To unlock, the key must be close to you on the side of the vehicle you are unlocking. When you touch the INSIDE of the handle, they vehicle will unlock. So if you have the key with you and you are on the driver's side, and person on the passenger side touches the inside of the handle, the vehicle will not unlock. Key must be on the same side.
- To lock the vehicle, the key must be on the same side of the vehicle (and also outside of the vehicle) and you touch the OUTSIDE of the door handle. There is a little indented rectangle. That is the touch sensor to lightly touch.
- Automatic locking, if you unlock the vehicle, but don't open the door, the vehicle will automatically relock within 3 mins (or something like that.)
- With the smart key, the vehicle will not allow you to lock the keys inside the car or the trunk.
Hope that helps!
- To unlock, the key must be close to you on the side of the vehicle you are unlocking. When you touch the INSIDE of the handle, they vehicle will unlock. So if you have the key with you and you are on the driver's side, and person on the passenger side touches the inside of the handle, the vehicle will not unlock. Key must be on the same side.
- To lock the vehicle, the key must be on the same side of the vehicle (and also outside of the vehicle) and you touch the OUTSIDE of the door handle. There is a little indented rectangle. That is the touch sensor to lightly touch.
- Automatic locking, if you unlock the vehicle, but don't open the door, the vehicle will automatically relock within 3 mins (or something like that.)
- With the smart key, the vehicle will not allow you to lock the keys inside the car or the trunk.
Hope that helps!
That auto lock feature is only there so it locks if you accidentally pressed unlock.








If you really want it to auto lock, there are aftermarket solutions. Some German competitors like BMW also have auto lock when walking away when enabled.

My 2020 BMW has this handy feature and I never have any incident of locking the key fob inside. This confuses me quite a bit when walking away from the GLE without locking it, since I get so used to the bimmer smartness.
The technology is very convenient and easy to implement, not sure why the Mercedes engineers think this is not a feature that should be implemented on the brand's vehicles. At this point, it's likely just software programming, since all the hardware is there.



