there's a valve on the side of the rear heater core. It's in the Van's
Owners Manual.

'forward' is 'on.'
recommended by me is always have it on 'some' yearround.

Many a heater core as rotted out and I think having coolant just sit in
it for years  is a bad practice.

Circulating hopefully fairly fresh coolant is much better for it.

There are quite a lot of vanagon drivers that don't know about that
hidden heater valve control. I was surprised when I got my first vanagon
over 20 yrs ago ...I've never seen any car with a heater valve control
under a rear seat.

check to see if it's been disconnected from the cooling system ..many are.

On 9/4/2015 8:10 AM, Neil2 wrote:
> The rear heater air isn't warm at all.  Is there a second control on the
> dash required to control the temp of the rear blower air?  (1990 Westy)
>
> Please/thanks!
>
> --
> Neil2
> '82 Diesel Westfalia (Ducky)
> '86 Vanagon/Westfalia Wannabe (SaVannah)
> '08 170" 2500 Mega Roof Dodge Sprinter (Moby)
> '90 Westfalia Subagon
> Fulltiming since August 2008
> Nunquam Pendite Divendium
>