Keyless remote not detected

[Mathieu]

Hi there!
sometimes (about 1 in 6 trips) I get the message: keyless remote not detected. I then have to turn the car off and on again. Then the message disappears. I replaced the battery in the fob, but this did not help. Also tried the spare fob, with the same result. Does this problem sound familiar to any of you?
Thanks for your answer!
Mathieu

[EEEE]

I don't think I've ever seen it. I had the flat fob battery warning once only.

Is the key fob free from anything that might block its signal (EG, not in a bag full of electronics or metal). I'm not sure exactly where in the car the antenna is to pick up the fob, is there anything else fitted in the car that might interfere?

[FDAD]

Do you have anything in the pouch below the front USB/AC/HDMI ports?

[Mathieu]

The fob is in my pocket. Nothing else. It is not a warning that can be found in the manual.
The front USB/AC/HDMI ports ar not in use

[happyV]

Mine is very picky.
If I got my phone too close or in winter I sometimes carry electrical pocket warmers in my coat, I get this warning.
It seems to really want to make sure the key is there, before you drive off. Which I think is good.

[Mathieu]

Just remembered that I have had another iPhone on the 5G network for a few weeks now. Could that 5-G signal be the culprit?
Maybe I should just turn off that 5-G.