went to dealership to repair heater core on 2002 a4 1.8T.they now tell me that after they installed the new heater core and bleed the system the watr pump failed and now needs to be replaced oh and by the way may as well replace the timing belt too. vehicule has 115,000K what does the water pump have to do with the heater core. was fine when I brought the car in
the water pump pumps the antifreeze witch flows through your heater core. if the water pump is shot your car would over heat. BUT i have never heard of water pump failer due to a system bleed? did they give you a reson for the timing belt.
The water pump failure sounds fishy to me. I avoid dealerships at all cost. They tend to overcharge , and fix unnecessary stuff.
The timing belt on the other hand should have been done at 100,000 km / 60,000 mi