The button functions for a Care Key are the same as for a regular key. When the administrator user profile has set a speed limit, this will be activated when the vehicle is used with a Care Key. If no speed limit has been set, the vehicle and the key work as normal.
The speed limit that can be set with a Care Key is intended to give the vehicle owner increased peace of mind when handing over the vehicle to a young or inexperienced driver, a valet, a workshop, etc.
When a speed limit is active, this will be indicated by a symbol in the instrument panel and a message.