On January 14, it was reported that because the warm air conditioning system (HVAC) has potential safety hazards when working in cold weather climates, Tesla Model 3 and Model Y are currently under the "problem assessment investigation" conducted by Transport Canada.
Currently, Transport Canada has received 16 complaints from car owners about Tesla's Model 3 and Model Y heating and air conditioning systems, involving the performance of the two models' HVAC systems in cold weather conditions.
The complaint led the Ministry of Transport to launch a "problem assessment investigation", it is reported that the investigation is not a recall of the relevant vehicles, but concerns about the potential difficulties involving vehicles in windshield defogging and defrosting, which in turn affects the visibility of drivers.
Local authorities have contacted Tesla and expect a solution to this soon.
In addition, it is worth noting that before, there were also Canadian car owners who broke the news that Tesla Model Y and Model 3 are prone to heat pump failure in cold climate environments, and Tesla has issued a statement that it has solved the problem through OTA.
But now, north American car owners said that they encountered such failures again, in a very low temperature environment, after opening the heat pump system, the vehicle will issue an alarm, there is no heat in the car at all, if you do not know in advance, you may be trapped in a low-temperature remote area, there is a certain safety hazard.
Tesla said that the cause of the failure may only be because the condensed ice blocked the forward air outlet near the windshield, resulting in an error in the sensor of the heat pump system, so it is recommended to use the preheating function to thaw or manually remove the ice from the air intake.
It is understood that in order to enhance the heating performance of the vehicle, Tesla is equipped with an electric heat pump system, compared with direct resistance heating, the heat pump heating efficiency is more efficient.
Moreover, the heat pump does not generate heat, but instead transports hot air to a specific area through the system. The compressor uses electricity to deliver refrigerant throughout the system and captures heat externally, which is then delivered to the interior of the vehicle.
At the same time, this heat pump can produce 3kw of heat energy with only 1kw of electrical energy, and the heating efficiency is very efficient. Compared with direct heating of PTC resistors, heat pumps produce heat better and do not consume too much of the vehicle's battery power.
