To keep your doors from freezing in the cold weather, Route 3 Car Wash recommends that you spray or smear silicone every fall and spring on all the gaskets between the door and the car’s body. If there is a gasket on each, then coat both. Additionally, it’s helpful to treat the gaskets on the trunk or hatch to prevent them from freezing
Stopping in regularly at Valley Car Wash is a great way to keep salt and grime off your vehicle in the winter, but washing your vehicle when it’s very cold outside can cause the door lock mechanisms to get wet, which may cause your locks to freeze. To prevent this from happening, it’s a great idea to spray graphite in the key slot or have a keyless entry system installed in your car. If you decide to spray graphite in your key slot, make sure to work your key into it several times to get the graphite deep in the slot.
Also, it can be helpful to keep a container of lock thawing chemicals handy in case the lock still freezes. The chemicals usually wash out the lubricant from the lock mechanism, so shoot more graphite into the lock after you get it open.