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You must take the battery neg and pos off. Comp[letely take off the dash, steering wheel and knee guard just under the dash. There are 4 screws two on either end of the dash. Then go to the engine bay and right below the heater core hoses there are two nuts that are on the fire wall remove these. go back into the vehicle and give the dash a slight tug. make sure when disconnecting wires from anywhere mark the on each side of the plug or you will have a nightmare of wires that could go anywhere. Remome all the heater hoses that may be in the way and in the middle of your console on the dash ther lies your heater core wrapped in a box take the 2 screws off the top and pull out the core. Replace and put your car back together.
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2003 vw passat and you have no heat?
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