Volkswagen Golf Service & Repair Manual: Smells from heater and air conditioner unit

Possible complaints about refrigerant circuit

  Note The air conditioning system is operating correctly if the air emerging from the vent on the dashboard is at a temperature of 7oC or less. ...

Is the smell coming from evaporator or the heat exchanger?

Fishy smell –  Due to leak in engine's cooling system or in heat exchanger of heater and air conditioner unit.   N ...

Other materials:

Assembly overview - three-point seat belt, 2-door model, with belt tensioner
1 -  Belt inertia reel Removing and installing → Chapter 2 -  Electrical wiring harness 3 -  Bolt If removed due to an accident with seat belt fastened, renew bolt. 40 Nm 4&nbs ...

Charging battery in maintenance mode with battery charger -VAS 5903-
  Note When a battery is being charged in the maintenance mode and an electrical consumer draws current from the battery, the battery charger -VAS 5903- automatically compensates the charge. The maintenance mode can be ...

Detecting leaks in refrigerant circuit using leak detecting system -VAS 6196- or leak detecting system -VAS 6201- or a later model
  Note Small leaks can be detected with, for example, an UV leak detector additive. –  Evacuate refrigerant circuit using an air conditioner service station → Chapter.   Note ...