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Re: FIX for water Ingress via Scuttle Panel
The fact that you can hear water sloshing about would point to blocked drains. Adding the extra seal to the pollen filter has only been an attempt to cure the symptom and not the cause. I would recommend you check the drains as ingress of water will seriously affect the efficiency of the pollen filter. Both restrictive air-flow and water ingress ain't good for the heater blower motor.
Whilst I have no direct evidence of a link on any Renault where the ballast resistors on the heater motor have failed I have also seen a very dirty pollen filter plus a poor service history for the pollen filter. Remember the heater motor relies on a good flow of air to keep it cool.
Currently in madnoel10's garage:
Honda Civic 1.4l