- E 9 - Fresh air fan switch
- F 54 - Coolant fan thermal switch
- G 112 - potentiometer - central flap servomotor
- G 135 - potentiometer in the servomotor of the blower flap
- J 8 - parking heater relay
- J 214 - Thermotronic on-board computer control unit
- j 248 - control unit of the direct injection device of diesel
- N 24 - additional resistance of fresh air fan
- T 10 o - plug connection, 10-pin, brown color, connecting clamp for water tank E-Box
- V 2 - fresh air fan
- V 70 - central flap servomotor
- V 107 - servomotor of the blower flap
- V 154 - Fresh air/recirculated air flap servomotor
- 135 - connection to the body ("ground") "2", in the instrument cluster wiring harness
* - cars with parking heating
** - cars with 1.9 l TDI engine
*** - cars with 2.5 l TDI engine