2004 Volkswagen Passat Q&A
2004 Volkswagen Passat Question: How can i replace the brake fluid Reservoir?
There should be a fine strainer just under the filler car could it be restricted? It should not be as there should be no debris in the brake system hydraulics. If the fluid needs to be topped up either the brake pads are worn or there is a leak which in either case needs to be investigated. - patrick mannion