I have just bought a C Class 200 CDI and I found out that when it rains the drivers well fills with water coming from under the dash board on the side by the door. can anyone help me to stop this. Stewart

 

Don't drive in the rain?

OK, do you have a sunroof? At each corner on the opened sunroof, you'll see a hole. That hole connects to a drain hose, that runs through the front window and rear window pillars. I am guessing your hose has a crack in it.

The only other thing would be a leaking front windshield gasket, but I would also guess that this would create a lot of cabin noise at speed.

 

Hi waybomb Thanks for that, I do not have a sunroof and I have also had the windscreen inspected by autoglass and they found nothing. any other ideas, I have checked the drainage areas and cleared them with no luck, this is starting to do my head in I need to wear wellingtons to drive.

 

I would pull the cluster out, pull off as much dash cladding off as possible, the kick panels, etc, move or remove as much of the sound insulation so you can see the firewall, etc, then start with a garden hose on the hood and look for the leak with a flashlight. Have a helper man the hose and slowly work your way up to the roof line. If it's rain coming in, it should come in with a hose running on the leak.

Good Luck

Let us know what you find.

 

not sure of the year of your C class but if you have a 202 chassis a common place for leaking is the passenger side(right side) cowl gets clogged and water pours into the blower motor and onto the passenger floor.

the water catcher is under the windshield cowl and the cowl needs to be removed to inspect the drain. just a few screws and some clips. you dont have to fully remove it to see the water drain. you can remove the right side wheel well liner and you can see the bottom of the water drain and the hose that carries the water out of the car. unhook to hose from the drain and check it to see if its clogged.

 

Off-topic here, I notice your location is Oban. As in Scotch?

 

Hi Chassis221 the cars year is 2003 I do not know a lot about cars, but the water seems to be dripping out of the cladding under the dash board on the driver’s side which as I am in Scotland will be the opposite side to you. Any more help would be really apprisated.

 

Thats correct approximately 1.5 miles from the distillery

 

Lucky dog you! I am an Oban fan.


Anyway, what the other guy said. I suspect the air inlet drain is on the passenger side, no matter what side the steering wheel is on, but am not certain. Open the hood, and you'll see the inlet. You'll see the drain he is talking about. If that's blocked up, water could go where it should not.

Good Luck.

 

Hi Waybomb, I do not even like whisky. Thanks for the explanation of what to look for, I will have a go tomorrow and I will let you know how I get on.

P.S. I need the good luck.

Stewart