Good Morning... This is my second email (no response on the first). Car is vibrating a bit too much. Additionally the Pilot system as well as Parking Assist appear to be non-operational and the Maintenance Light comes on with greater frequency. I will come to 20 Morris Street tomorrow morning (Saturday) to execute the exchange, but would appreciate a confirmation that this has been received an understood. Thank you COL (Ret) Bill Woods User's recommendation: SIXT needs a dedicated phone number for rental over a week as these are likely not vacationers.