Adjustable Interior Temp. Setting (22°C) for Auxiliary Heater?

Hello,

What options do I have (using VAG-Com) to change the 22°C interior temperature that is preset by the Climatronic in "Auto" mode, specifically when using the auxiliary heating system?

The fact is that every time the heated seat becomes warm enough and starts preheating the interior, it automatically targets 22°C (regardless of what I had previously set in automatic mode!!). However, the heat required for this interior preheating is diverted from the engine preheating, which is why I've previously been "forced" to run back to the car 5-10 minutes after turning it on to manually adjust the interior temperature to, for example, 16/18°C, in order to achieve a warmer engine.

(This valve 279 (?) is not activated by VW, so the poor engine preheating cannot be due to this.)

Is there no way to change this "mandatory recommendation" regarding the SH (Schlüssel-Halter) operation through VAG (presumably a system or organization)?

(Passat 3C Sedan, 125 kW TDI, Year: 09/2006)