Switching off the proximity key
I posted a while back about battery drain over time (about 3 weeks), and someone helpfully suggested I turn off the proximity function (smart key/keyless entry) on the locks using the switch they pointed me to under the dash.
I did that, and it also turns off keyless go (i.e. you have to put the key in the lock to make the car start). This makes sense, but I just wanted to check that this is expected behaviour: it suggests that that there are two mechanisms which allow the ignition to work - an active one linked to the smart key system (which presumably needs there to be batteries in the keyfob), and a passive one which works when the key is placed in the ignition lock (does this one work with an RFID chip, so doesn't need the battery in keyfob to operate?)