1998 Mercedes C230 92,000 miles. When it rains or when I go thru a car wash, water enters the car on the passenger side under the dash board. Sometimes, there is so much water, I've had to use a wet/dry vac to remove it. Any idea how the water is entering the car and how to stop it?
Most of those cars has a sunroof. Forst check for drain blockage. Then go outside the car and check to see the plastic panel that covers the electrical componets in on place properly. Lastly, have you had a windshield replced?