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:

Preparing body flange for fitting
  WARNING Keep bonding surface free of dirt and grease. Do not treat bonding surface with activator immediately after cutting back. Do not prime. Do not treat with cleaning solution. ...

Removing and installing engine speed sender -G28-
Special tools and workshop equipment required     Socket AF 4 mm -T10370- Removing –  Remove noise insulation → General body repair ...

General description of Midtronics -INC 940- battery tester
Batteries in VW vehicles may only be charged with battery chargers approved by VW. In the USA/Canada, it is permitted for the Midtronics -INC 940- battery charger to be used. Midtronics -INC 940- battery charger combines battery charging ...