MCU (Media Control Unit) is a computer system that controls the infotainment and HVAC system of your Tesla Model S. If the MCU is indeed broken, it will need to be repaired or replaced by an authorized Tesla service center. The cost of the repair will depend on the extent of the damage and whether the unit needs to be repaired or replaced. It's best to contact Tesla customer support or an authorized Tesla service center to get an estimate of the cost of the repair. Keep in mind that Tesla Model S is an older model, and repair cost may be high, in some cases it could be more cost-effective to buy a new car.

The Tesla Gen3 Charger is rated to charge at a maximum of 20A per phase (for a total of 60A across three phases), but it may not always charge at that maximum rate. There are a few reasons why the charger may be charging at a lower rate: (1) The electrical service at your home may not be able to support the full 60A charge rate. Make sure you have the right electrical service to support the charger. (2) The wiring in your home may not be capable of handling the full charge rate. Make sure that the wiring is rated for the full 60A charge rate. (3) The Tesla vehicle may be charging at a lower rate to protect its battery from overheating or overcharging. You can check the charging rate for your Tesla by going to the "Charge" screen on the vehicle's touch screen display. If the charging rate is lower than expected, you can contact Tesla customer support for further assistance. To forget the old charger and use the new one, you can try disconnecting the car from the old charger, clear the charger settings in...

It appears that the issue is with the battery door on the Tesla Nano 120W device. This problem could be caused by a number of factors, such as a damaged or malfunctioning door latch, or a problem with the door's alignment or fit. To fix the issue, it may be necessary to replace the battery door or to perform adjustments to the door or latch to ensure proper function. It's best to contact the manufacturer for instructions or warranty service.