Our 240d doesn’t seem to always want to shut off when the weather gets cold. This last week the temp dropped to the teens & twenty’s. More often then not turning the key would not shut down the car & would have to use the manual shut off under the hood. When the weather gets warmer such as today it shuts off. I’ve already looked over the vacuum lines and haven’t noticed any that are disconnected. Any ideas what else to check?

Thanks