Parktronic at the C 70

Hello guys, drive a C 70 T 5 now and it has the parking sensors on the back as standard from the equipment Momentum. You can switch them off. According to the instructions for use there should be a switch next to the handbrake, with which you can switch off the parking sensors. But this switch is missing. Maybe someone can tell me if there is another possibility or if someone has the ominous button to deactivate. Thank you already in advance.