On 82 diesels, the heater valve is inside the passenger compartment to
the left of the glovebox. In 83 and later diesels and waterboxers it is
behind the radiator and normally accessed from below by dropping the
spare tire door. The valve is the same in all cases and costs under $20.
The same one is used in other VW models.

Mark

Bob Stevens wrote:
>
> The "valve" is above the spare. Mine's leaking and I get some heat in
> summer. When I reach up in there and push real hard on the lever that the
> "other" end of the heater cable (PN 251 265 473 A) handle is attached to
> that sticks out of the front of the dash. My valve probably needs replacing.
> The "left of the glovebox" reference may be to the 2nd up from the bottom of
> the 4 levers. That lets outside air in and when the 2nd down from the top
> lever (heater) is open, slid to the right, hot air flows in. Otherwise even
> with the heater cable slid right not much hot air flows in.
> Not sure which of these is the correct valve:
> Heater Valve $116.00 1147412019
> Heater Valve $77.65 1147412037
> Both off the busdepot site.
> Bob
>